Call Admission Control(RAN14.0_04)

Call Admission Control RAN14.0

Feature Parameter Description

Issue 04

Date 2013-06-20

HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2013. All rights reserved.

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WCDMA RAN

Call Admission Control Contents

Issue 04 (2013-06-20) Huawei Proprietary and Confidential

Copyright © Huawei Technologies Co., Ltd

i

Contents

1 Introduction ................................................................................................................................ 1-1

1.1 Scope ............................................................................................................................................ 1-1

1.2 Intended Audience......................................................................................................................... 1-1

1.3 Change History .............................................................................................................................. 1-1

2 Overview of Call Admission Control ................................................................................... 2-1

2.1 CAC Policy .................................................................................................................................... 2-1

2.2 CAC Procedure ............................................................................................................................. 2-1

3 CAC Based on NodeB Credit Resources ........................................................................... 3-1

3.1 NodeB Credit Resources .............................................................................................................. 3-1

3.2 Admission on RNC ........................................................................................................................ 3-1

3.2.1 Calculation of the Remaining NodeB Credit Resources on the RNC Side .......................... 3-1

3.2.2 Admission Decisions on RRC Connection Setup Requests ................................................. 3-2

3.2.3 Admission Decisions on Other Resource Requests ............................................................. 3-2

3.3 Admission on NodeB ..................................................................................................................... 3-2

4 CAC Based on Iub Resources ............................................................................................... 4-1

5 CAC Based on Code Resources ........................................................................................... 5-1

6 CAC Based on the Number of HSPA Users ....................................................................... 6-1

6.1 CAC for HSDPA Users .................................................................................................................. 6-1

6.2 CAC for HSUPA Users .................................................................................................................. 6-1

7 CAC Based on Power Resources ......................................................................................... 7-1

7.1 Overview ....................................................................................................................................... 7-1

7.2 Power-based Admission Control on RRC Connection Setup Requests ....................................... 7-2

7.3 Power-based Admission Algorithm 1 for RAB Setup .................................................................... 7-3

7.4 Power-based Admission Algorithm 2 for RAB Setup .................................................................. 7-11

7.5 Power-based Admission Algorithm 3 for RAB Setup .................................................................. 7-15

7.6 Uplink Power-Based Admission Algorithm 4 for RAB Setup ....................................................... 7-15

8 Common Channel Admission ................................................................................................ 8-1

8.1 CAC on Traditional Common Channels ........................................................................................ 8-1

8.2 CAC on the E-FACH or E-RACH .................................................................................................. 8-2

9 Feature Deployment ................................................................................................................. 9-1

9.1 WRFD-020101 Admission Control ................................................................................................ 9-1

9.1.1 Prerequisites ......................................................................................................................... 9-1

9.1.2 Activation Procedure ............................................................................................................. 9-1

9.1.3 Verification Procedure .......................................................................................................... 9-2

9.1.4 Deactivation Procedure ........................................................................................................ 9-2

9.1.5 Example ................................................................................................................................ 9-3

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9.2 WRFD-01061202 HSUPA Admission Control ............................................................................... 9-3

9.2.1 Prerequisites ......................................................................................................................... 9-3




9.2.5 Example ................................................................................................................................ 9-5

9.3 WRFD-01061003 HSDPA Admission Control ............................................................................... 9-6

9.3.1 Prerequisites ......................................................................................................................... 9-6




9.3.5 Example ................................................................................................................................ 9-8

10 Parameters ............................................................................................................................. 10-1

11 Counters .................................................................................................................................. 11-1

12 Glossary .................................................................................................................................. 12-1

13 Reference Documents ......................................................................................................... 13-1

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Call Admission Control 1 Introduction



1-1

1 Introduction

1.1 Scope

This document describes the call admission control function which includes the following features:

WRFD-020101 Admission Control

WRFD-01061003 HSDPA Admission Control

WRFD-01061202 HSUPA Admission Control

It describes how services are granted the network access and provides the parameters associated with this feature.

1.2 Intended Audience

This document is intended for:

Personnel who are familiar with WCDMA basics

Personnel who need to understand Call Admission Control (CAC)

Personnel who work with Huawei products

1.3 Change History

This section provides information about the changes in different document versions.

There are two types of changes, which are defined as follows:

Feature change: refers to a change in the CAC feature of a specific product version.

Editorial change: refers to a change in wording or the addition of information that was not described in the earlier version.

Document Issues

The document issue is as follows:

04 (2013-06-20)

03 (2012-11-30)

02 (2012-07-20)

01 (2012-04-30)

Draft A (2012-02-15)

04 (2013-06-20)

Change Type Change Description Parameter Change

Feature change None None

Editorial change Added 3.3 Admission on NodeB in 3 CAC Based on NodeB Credit Resources.

None

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1-2

03 (2012-11-30)

This is the third commercial release of RAN14.0.

Compared with issue 02 (2012-07-20) of RAN14.0, this issue incorporates the changes described in the following table:



Editorial change Added section 8 "Common Channel Admission." None

02 (2012-07-20)

This is the second commercial release of RAN14.0.

Compared with issue 01 (2012-04-30) of RAN14.0, this issue incorporates the changes described in the following table:


Feature change The relative orders of admission decision based on the different resources are changed. Thus, the description in 2.2 "CAC Procedure" is modified and the orders of 3 -7 are also modified accordingly.

None

Editorial change The network impact about uplink power-based admission algorithm 4 is added. For details, see section 7.6 "Uplink Power-Based Admission Algorithm 4 for RAB Setup."

Added the information about how to deploy the features of WRFD-020101 Admission Control, WRFD-01061202 HSUPA Admission Control, and WRFD-01061003 HSDPA Admission Control. For details, see 9 "Feature Deployment."

None

01 (2012-04-30)

This is the first commercial release of RAN14.0.

Compared with issue Draft A (2012-02-15) of RAN14.0, this issue incorporates the changes described in the following table:



Editorial change The description about uplink power-based admission algorithm 4 is updated. For details, see section 7.6 "Uplink Power-Based Admission Algorithm 4 for RAB Setup."

None

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1-3

Draft A (2012-02-15)

This is the first draft of the document for RAN14.0.

Compared with issue 04 (2011-12-30) of RAN13.0, this issue incorporates the changes described in the following table.

Change Type

Change Description Parameter Change

Feature change

Added the descriptions about the uplink power-based admission algorithm 4 for RAB setup. For details, see section 7.6 "Uplink Power-Based Admission Algorithm 4 for RAB Setup."

The following parameter is modified:

NBMUlCacAlgoSelSwitch

Added the descriptions about DC-HSUPA admission control.

None

Replaced some existing parameters with new parameters. The added parameters are listed as follows:

RRCCeCodeCacChoice

DlRRCCeCodeResvSf

CSRABCacOptSwitch

RTRRCCacThdOffset

NRTRRCCacThdOffset

OtherRRCCacThdOffset

UlRRCCeResvSf

CSRABCacOptSwitch

Editorial change

None None

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Call Admission Control 2 Overview of Call Admission Control



2-1

2 Overview of Call Admission Control

2.1 CAC Policy

Call Admission Control (CAC) is used to determine whether the system resources in a cell are sufficient to accept a resource request. If the system resources are sufficient, the resource request is accepted; otherwise, the resource request is rejected.

A radio link sends a resource request to the CAC functional module when additional resources are required, in cases such as radio resource control (RRC) connection setup, new service setup, change of existing services, soft handover, and cell change. Upon receiving a resource request, the CAC functional module determines whether the request can be accepted by measuring the cell load and the requested resources. For details about measuring the cell load, see the Load Control Feature Parameter Description.

The admission decision performed using CAC is based on the following resources: NodeB credit resources, Iub resources, code resources, and power resources. In the case of an HSPA resource request, the admission decision is also based on the number of HSPA users. The admission succeeds only when the resources on which CAC is based are available.

With CAC, an overloaded cell can accept resource requests for an RRC connection setup only in the case of emergency calls, detachments, or registrations. This is because the priority of such requests is high. This helps maintain system stability when cells are overloaded. In addition, admitting or rejecting users over FACH or enhanced FACH channels (HS-DSCH) in an overloaded cell can be specified by setting FACH_UU_ADCTRL of the NBMCacAlgoSwitch parameter.

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2.2 CAC Procedure

A radio link sends a resource request to the CAC functional module when additional resources are required. On receipt of the resource request, the CAC functional module performs the admission decision based on the following resources:

1. NodeB credit resources, which are used to measure the channel demodulation capability of NodeBs

2. Available Iub transmission bandwidth

3. Available cell code resources

4. Number of HSPA users:

Number of HSDPA users (only for HSDPA services)

Number of HSUPA users (only for HSUPA services)

5. Available cell power resources

A call can be admitted only when all of these resources are available.

Code resource-based and Iub resource-based admission control are mandatory and cannot be disabled. For HSDPA/HSUPA services, admission control based on the number of HSUPA/HSDPA users is also mandatory. Other admission control policies are enabled or disabled by running the MOD UCELLALGOSWITCH or SET UCACALGOSWITCH command.

Figure 2-1 shows the basic procedure for a resource-based admission decision.

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2-2

Figure 2-1 Basic procedure for a resource-based admission decision

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Call Admission Control 3 CAC Based on NodeB Credit Resources



3-1

3 CAC Based on NodeB Credit Resources

NodeB credit resource-based CAC applies to R99, HSDPA, and HSUPA services in the uplink and downlink.

3.1 NodeB Credit Resources

The NodeB credit resource is an RNC-related concept. It is referred to as the channel element (CE) on the NodeB side, indicating the channel demodulation capability of a NodeB.

New services can be admitted only when there are sufficient NodeB credit resources on the RNC side and sufficient CE resources on the NodeB side.

CEs are classified into uplink and downlink CEs:

An uplink 12.2 kbit/s voice service (SF = 64) plus 3.4 kbit/s signaling traffic consume one uplink CE.

A downlink 12.2 kbit/s voice service (SF = 128) plus 3.4 kbit/s signaling traffic consume one downlink CE.

If only 3.4 kbit/s signaling traffic is carried on a DCH or HSPA channel, one CE is still needed. CEs have been reserved for common and HSDPA-related channels. For details about CEs and CE consumption of different types of service, see the CE Resource Management Feature Parameter Description.

3.2 Admission on RNC

3.2.1 Calculation of the Remaining NodeB Credit Resources on the RNC Side

CE Capability Reporting

NodeB credit resource-based admission is implemented at NodeB level, local cell group (LCG) level (if any), and local cell (LC) level. Cells in an LCG share the CEs of the LCG in the uplink. The NodeB sends the RNC an audit response message, reporting the CE capability of the three levels. The NodeB considers physical and licensed CEs when reporting the CE capability to the RNC.

The NodeB-level CEs are the licensed CEs supported by the NodeB.

In the uplink, the number of LCG-level CEs are the smaller one between the number of LCG-level physical CEs and the number of NodeB-level licensed CEs. In the downlink, the number of LCG-level CEs are the sum of downlink CEs on all boards of the LCG.

In the uplink, the LC-level CEs are the physical CEs of the uplink resource group to which the cell belongs. In the downlink, the LC-level CEs are the physical CEs of the baseband processing board to which the cell belongs.

Relationship between NodeB Credit Resources and CEs

The relationship between NodeB credit resources and CEs is as follows:

In the uplink, the quantity of NodeB credit resources is twice that of CEs.

In the downlink, the quantity of NodeB credit resources equals that of CEs.

Remaining NodeB Credit Resources

The RNC calculates the remaining NodeB credit resources based on the reported CE capability, relationship between NodeB credit resources and CEs, and the CE consumption rule.

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3-2

The RNC implements NodeB credit resource-based admission control based on the calculation result. Uplink and downlink CEs are independent from each other. Therefore, NodeB credit resource-based admission is implemented separately in the uplink and downlink.

3.2.2 Admission Decisions on RRC Connection Setup Requests

For an RRC connection setup request, NodeB credit resource-based admission is implemented as follows:

If the RRCCeCodeCacChoice parameter is set to LOOSE_CAC, NodeB credit resource-based admission succeeds if the available credit resources of the local cell, local cell group (if any), and NodeB are sufficient for setting up an RRC connection.

If the RRCCeCodeCacChoice parameter is set to STRICT_CAC, the RNC implements NodeB credit resource-based admission based on the cause carried in the RRC connection setup request:

− If the cause is "Emergency Call" or "Detach", NodeB credit resource-based admission succeeds if the available credit resources are sufficient.

− For any other cause, the RNC must ensure that the available credit resources of the local cell, local cell group (if any), and NodeB exceed the reserved credit resources upon admitting an RRC connection setup request. The reserved credit resources are calculated using SF which is specified by the parameter DlRRCCeCodeResvSf (for the downlink) or UlRRCCeResvSf (for the uplink).

3.2.3 Admission Decisions on Other Resource Requests

Handover Service Requests

For a handover service request, NodeB credit resource-based admission succeeds if the available credit resources of the local cell, local cell group (if any), and NodeB are sufficient for the service to be admitted.

PS Service/CS Service (Non-AMR Service) Requests

For PS or CS service (non-AMR service) requests, the RNC must ensure that the available credit resources of the local cell, local cell group (if any), and NodeB exceed the reserved credit resources upon admitting a new service.

The reserved credit resources are calculated using SF which is specified by the UlHoCeResvSf (for the uplink) or DlHoCeCodeResvSf (for the downlink) parameter.

AMR Service Requests

For AMR service requests,

If the CSRABCacOptSwitch parameter is set to ON, the credit resource-based admission is successful if the current available credit resources of the local cell, local cell group (if any) and NodeB are sufficient for the service.

If the CSRABCacOptSwitch parameter is set to OFF, the RNC has to ensure that the current available credit of the local cell, local cell group (if any) and NodeB exceeds the reserved credit after admitting a new service. The reserved credit is calculated through SF which is determined by the UlHoCeResvSf (for the uplink) or DlHoCeCodeResvSf (for the downlink) parameter.

3.3 Admission on NodeB

NodeB credit resource-based CAC on the NodeB side is not switch controlled and it admits new services at the following levels:





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NodeB

New services are admitted only when the amount of CEs required by all the UEs on the NodeB is less than or equal to the amount of licensed CEs of the NodeB.

LCG

New services are admitted only when the amount of CEs required by all the UEs in an LCG is less than or equal to the amount of physical CEs of the LCG.

In the uplink, the LCG-level CEs are the smaller one between the LCG-level physical CEs and the NodeB-level licensed CEs.

In the downlink, the LCG-level CEs are the sum of downlink CEs on all the boards of the LCG.

LC

New services are admitted only when the amount of CEs required by all the UEs in an LC is less than or equal to the amount of physical CEs of the LC. In the uplink, the LC-level CEs are the physical CEs of the uplink resource group to which the LC belongs. In the downlink, the LC-level CEs are the physical CEs of the baseband processing board to which the LC belongs.

Board

New services are admitted only when the amount of CEs required by all the UEs on a board is less than or equal to the amount of physical CEs of the board. New services cannot be admitted at the board level when no board can accommodate the new services.

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Call Admission Control 4 CAC Based on Iub Resources



4-1

4 CAC Based on Iub Resources

Iub resource-based admission control is mandatory when a new service attempts to access the network.

For details about resource-based admission at the transport layer over the Iub interface, see the Transmission Resource Management Feature Parameter Description.

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Call Admission Control 5 CAC Based on Code Resources



5-1

5 CAC Based on Code Resources

Code resource-based admission is mandatory when a non-HSDPA service attempts to access the network.

The reserved code resources are shared by all HSDPA services and therefore code resource-based admission control for HSDPA services is not required. For details about code allocation for HSDPA services, see the HSDPA Feature Parameter Description.

In code resource-based admission, the admission criteria vary with the service request.

RRC Connection Setup Requests

For an RRC connection setup request, code resource-based admission is implemented as follows:

If the RRCCeCodeCacChoice parameter is set to LOOSE_CAC, code resource-based admission succeeds if the remaining code resources are sufficient for setting up an RRC connection.

If the RRCCeCodeCacChoice parameter is set to STRICT_CAC, the RNC implements code resource-based admission based on the cause carried in the RRC connection setup request:

− If the cause is "Emergency Call" or "Detach", code resource-based admission succeeds if the current remaining code resources are sufficient.

− For any other cause, the RNC must ensure that the current remaining code resources are greater than the reserved code resource and the code resource for the RRC connection. The reserved code resource is specified by the DlRRCCeCodeResvSf parameter.

Handover Service Requests

For handover service requests, code resource-based admission succeeds if the current remaining code resources are sufficient for the service to be admitted.

PS Service/CS Service (Non-AMR Service) Requests

For PS services/CS service (non-AMR service) requests, the RNC must ensure that the current remaining code resources are greater than the reserved resource plus the resource for the new service. The reserved resource is specified by the DlHoCeCodeResvSf parameter.

AMR Service Requests

For AMR service requests,

If the CSRABCacOptSwitch parameter is set to OFF, the RNC must ensure that the current remaining code resources are greater than the reserved resource plus the resource for the new service. The reserved resource is specified by the DlHoCeCodeResvSf parameter.

If the CSRABCacOptSwitch parameter is set to ON, code resource-based admission succeeds if the current remaining code resources are sufficient for the service to be admitted.

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Call Admission Control 6 CAC Based on the Number of HSPA Users



6-1

6 CAC Based on the Number of HSPA Users

6.1 CAC for HSDPA Users

HSDPA admission control is based on the number of HSDPA users.

When a new HSDPA service attempts to access the network, the admission based on the number of HSPA users succeeds if the following conditions are met:

The number of HSDPA users in the cell does not exceed the maximum value specified by the MaxHsdpaUserNum parameter upon admitting the new service.

The number of HSDPA users in the cell does not exceed the licensed number of users upon admitting the new service.

The number of HSDPA users in NodeB does not exceed the maximum value specified by the NodeBHsdpaMaxUserNum parameter upon admitting the new service.

Otherwise, the HSDPA service performs Directed Retry Decision (DRD) to access one of the cells that support blind handovers. If none of these cells can be accessed, the HSDPA service is degraded to an R99 service and then attempts to access a cell. For details about DRD, see the Directed Retry Decision Feature Parameter Description.

6.2 CAC for HSUPA Users

HSUPA admission control is based on the number of HSUPA users.

When a new HSUPA service attempts to access the network, the algorithm admits the service if the following conditions are met:

The number of HSUPA users in the cell does not exceed the maximum value specified by the MaxHsupaUserNum parameter upon admitting the new service.

The number of HSUPA users in the cell does not exceed the licensed number of users upon admitting the new service.

The number of HSUPA users in NodeB does not exceed the maximum value specified by the NodeBHsupaMaxUserNum parameter upon admitting the new service.

Otherwise, the HSUPA service performs Directed Retry Decision (DRD) to access one of the cells that support blind handovers. If none of these cells can be accessed, the HSUPA service is degraded to an R99 service and then attempts to access a cell. For details about DRD, see the Directed Retry Decision Feature Parameter Description.

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Call Admission Control 7 CAC Based on Power Resources



7-1

7 CAC Based on Power Resources

7.1 Overview

The power-based admission algorithm is optional for admission control. The power-based admission algorithm is enabled or disabled by the NBMUlCacAlgoSelSwitch/NBMDlCacAlgoSelSwitch parameter.

To enable power-based admission control for HSDPA or HSUPA services, select HSDPA_UU_ADCTRL or HSUPA_UU_ADCTRL under the NBMCacAlgoSwitch parameter. This switch does not work when the uplink is over

HSUPA channels and the downlink is over HSDPA channels.

CAC based on power resources is performed by using one of the following four algorithms:

Algorithm 1 (ALGORITHM_FIRST): admission control based on the cell power load and the expected load increase caused by a new service

Depending on the current cell power load, the RNC determines whether the cell load will exceed the threshold upon admitting the new service. If the cell load exceeds the threshold, the RNC rejects the access request. Otherwise, the RNC admits the service.

Algorithm 2 (ALGORITHM_SECOND): admission control based on the equivalent number of users (ENU)

Depending on the current ENU load and the access request, the RNC determines whether the ENU will exceed the threshold upon admitting the new service. If the ENU exceeds the threshold, the RNC rejects the access request. Otherwise, the RNC admits the service.

Algorithm 3 (ALGORITHM_THIRD): admission control without considering load increase caused by a new service

This algorithm assumes that the load increase caused by the new service is 0. Based on the current cell power load, the RNC determines whether the cell load will exceed the threshold. If the cell load exceeds the threshold, the RNC rejects the access request. Otherwise, the RNC admits the service.

Algorithm 4 (ALGORITHM_FOURTH): admission control based on the uplink actual power load and the expected load increase caused by a new service.

Depending on the current uplink actual power load, the RNC determines whether the cell load will exceed the threshold after admitting the new service. If the cell load exceeds the threshold, the RNC rejects the access request. Otherwise, the RNC accepts the service.

Algorithm 1, 2, and 3 apply to admission control in the uplink and downlink. Algorithm 4 applies only to admission control in the uplink.

Figure 7-1 shows the basic procedure for a power-based admission decision.


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7-2

Figure 7-1 Basic procedure for a power-based admission decision

The basic principles for a power-based admission decision are as follows:

For an intra-frequency handover request, only a downlink admission decision is required.

For a non-intra-frequency handover request, both uplink and downlink decisions are required.

If there is a rate downsizing request, the RNC accepts it directly. For a rate upsizing request, both uplink and downlink admission control are required.

7.2 Power-based Admission Control on RRC Connection Setup Requests

The RNC performs loose or strict admission control on RRC connection setup requests. The RRCCacChoice parameter specifies whether to use loose or strict admission control.

Admission control is performed on RRC connection setup requests the same way as it is performed on RAB setup requests, except that the admission thresholds are different. This section only describes the admission thresholds for RRC connection setup requests in loose and strict admission control. For details about admission control for RAB setup, see section 7.3 "Power-based Admission Algorithm 1 for RAB Setup."

If load increase is considered when the RNC performs admission control on an RRC connection setup request, the RNC calculates the load increase based on the signaling radio bearer (SRB) rate of the RRC connection setup request. The SRB rate of an RRC connection setup request is set by running the SET URRCESTCAUSE command.

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Loose Admission Control

If an RRC connection setup request comes from emergency calls, detachments, or registrations, the RRC connection is set up directly.

If an RRC connection setup request comes from other services, admission control is performed as follows:

When UL_UU_OLC or DL_UU_OLC under the NBMLdcAlgoSwitch parameter is set to 1,

− If the cell is overloaded, the RRC connection setup request is rejected.

− If the cell is not overloaded, the uplink or downlink OLC triggering threshold (UlOlcTrigThd or DlOlcTrigThd) is used for admission control.

When UL_UU_OLC or DL_UU_OLC is set to 0, the uplink or downlink OLC triggering threshold (UlOlcTrigThd or DlOlcTrigThd) is used for admission control.

For details about the state of an overloaded cell and overload control (OLC), see the Load Control Feature Parameter Description.

Strict Admission Control

If an RRC connection setup request comes from emergency calls or detachments, the RRC connection is set up directly.

If an RRC connection setup request comes from other services, the RNC determines the admission threshold based on one of the following request causes:

RRC connection setup requests of real-time services

RRC connection setup requests of non-real-time services

RRC connection setup requests of other services (excluding real-time services, non-real-time services, emergency calls, and detachments)

The RNC determines the admission threshold using the following formulas:

Admission threshold for RRC of real-time services = Admission threshold offset for RRC of real-time services (RTRRCCacThdOffset) + UlNonCtrlThdForAMR (for the uplink) or DlConvAMRThd (for the downlink)

Admission threshold for RRC of non-real-time services = Admission threshold offset for RRC of non-real-time services (NRTRRCCacThdOffset) + UlNonCtrlThdForOther (for the uplink) or DlOtherThd (for the downlink)

Admission threshold for RRC of other services = Admission threshold offset for RRC of other services (OtherRRCCacThdOffset) + UlOlcTrigThd (for the uplink) or DlOlcTrigThd (for the downlink)

7.3 Power-based Admission Algorithm 1 for RAB Setup

There are two types of power-based admission decisions based on algorithm 1: uplink and downlink.

The RNC performs admission control on services based on cell load. The measurement quantities relevant to cell load are processed and reported by the load measurement module of the RNC. For details about how measurement quantities relevant to cell load are measured and reported, see the section of load measurements in the Load Control Feature Parameter Description.

Uplink Power-based Admission Decisions for R99 Cells Based on Algorithm 1

In an R99 cell, uplink power-based admission decisions are made according to the RTWP-based total

uplink load. The RTWP-based total uplink load is calculated in real time by the load measurement

module of the RNC. It is represented by ηUL,R99-Total and calculated using the following formula:

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ηUL,R99-Total = 1 - PN/RTWP + ηUL,CCH

Where

PN is the received uplink background noise. It is set by the BackgroundNoise parameter. If the

auto-adaptive background noise update algorithm is enabled, PN is updated in real time. For details

about the auto-adaptive background noise update algorithm, see the Load Control Feature Parameter

Description.

RTWP is the received total wideband power in the uplink. It is measured by the NodeB and reported to

the RNC periodically.

ηUL,CCH is the reserved load on the uplink common channels. It is set by the UlCCHLoadFactor

parameter.

Upon receiving a service access request, the RNC makes the uplink power-based admission decision

for an R99 service. The procedure is as follows:

1. The RNC calculates the uplink load increase (ΔηUL) based on the initial admission rate of the service.

For details about the initial admission rate, see the Load Control Feature Parameter Description.

2. If the sum of the RTWP-based total uplink load (ηUL,R99-Total) and the load increase caused by the new

service (ΔηUL) is lower than or equal to the corresponding admission threshold

(UlNonCtrlThdForAMR, UlNonCtrlThdForNonAMR, UlNonCtrlThdForOther, or

UlNonCtrlThdForHo), the RNC admits the service. Otherwise, the RNC performs the next step.

If the CSRABCacOptSwitch parameter is set to ON, the RNC uses the following admission threshold for AMR service

setup, reconfiguration, or handover requests to increase the access success rate of AMR services:

When the OLC algorithm switch (UL_UU_OLC under the NBMLdcAlgoSwitch parameter) is turned on, the uplink OLC triggering threshold (UlOlcTrigThd) is used as the admission threshold.

When the OLC algorithm switch (UL_UU_OLC under the NBMLdcAlgoSwitch parameter) is turned off, the admission

threshold is 100%.

3. The RNC checks whether the control RTWP anti-interference function switch (RTWP_RESIST_DISTURB under the NBMCacAlgoSwitch parameter) is turned on. If it is turned on, the RNC checks whether the total uplink load of ENU on the cell is lower than CellUlEquNumCapacity. If it is lower than CellUlEquNumCapacity, the RNC admits the service. Otherwise, the RNC rejects the access request. For details about the total uplink load of ENU on the cell, see section 7.4 "Power-based Admission Algorithm 2 for RAB Setup."

Uplink Power-based Admission Decisions for HSPA Cells Based on Algorithm 1

In an HSPA cell, uplink power-based admission decisions are made based on the following load

measurements:

The RTWP-based total uplink load, which is calculated in real time by the load measurement module

of the RNC. It is represented by ηUL,HSUPA-Total and calculated using the following formula:

ηUL,HSUPA-Total = 1 - PN/RTWP + ηUL,CCH + ηHS-DPCCH

Where ηHS-DPCCH is the reserved load for the uplink HS-DPCCH. It is set by the

UlHsDpcchRsvdFactor parameter. The other variables are defined the same way as for an R99 cell

in "Uplink Power-based Admission Decisions for R99 Cells Based on Algorithm 1."

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The uncontrollable uplink load, which is the load factor for the receive power of a cell excluding the

receive power used for scheduling services. It is represented by ηUL,NonCtrl and calculated using the

following formula:

ηUL,NonCtrl = ηUL,HSUPA-Total - ηUL,Ctrl

Where ηUL,Ctrl is the controllable uplink load and equals the received scheduled E-DCH power share

(RSEPS). RSEPS is the ratio of the receive power of all scheduled users to RTWP in the current cell.

RSEPS is measured by the NodeB and periodically reported to the RNC.

The total uplink load for preferential admission of R99 services, which is represented by ηUL,R99Prefer-Total.

When the guaranteed bit rate (GBR) for HSUPA services is too high, the RTWP-based total uplink load

may also be too high, and therefore R99 service admission is difficult. In this case, ηUL,R99Prefer-Total

ensures that R99 services are preferentially admitted. It is calculated using the following formula:

ηUL,R99Prefer-Total = ηUL,NonCtrl + ThdHSUPAMaxGBP + ηUL,CCH + ηHS-DPCCH

Where ThdHSUPAMaxGBP is the maximum guaranteed load threshold for HSUPA services when the RNC

makes an admission decision on an R99 service. It is set by the HsupaMaxGBPThd parameter.

If the periodic measurement switch of the total receive power used for scheduling services on the E-DCH is turned off

(HSUPA_EDCH_RSEPS_MEAS under the NBMCacAlgoSwitch parameter is set to 0), the RNC performs admission

control for the cell based on ENU. For details about ENU-based admission control, see section 7.4 "Power-based Admission Algorithm 2 for RAB Setup."

Upon receiving a service access request, the RNC performs the uplink power-based admission decision. The procedure is as follows:


2. The RNC determines whether to admit the service. If service admission succeeds, the RNC admits the service. If service admission fails, the RNC performs the next step. Note that the admission criteria vary with the bearer type in an HSPA cell, which is described in follow-up sections.

3. The RNC checks whether the control RTWP anti-interference function switch (RTWP_RESIST_DISTURB under the NBMCacAlgoSwitch parameter) is turned on. If it is turned on, the RNC checks whether the total uplink load of ENU on the cell is lower than CellUlEquNumCapacity. If it is lower than CellUlEquNumCapacity, the RNC admits the service. Otherwise, the RNC rejects the access request. For details about the total uplink load of ENU on the cell, see section 7.4 "Power-based Admission Algorithm 2 for RAB Setup."

The admission criteria for different bearer types in an HSPA cell are as follows:

For the DCH RAB

If the bearer type is the DCH RAB, a service is admitted only when the following criteria are both met:

The sum of the uncontrollable uplink load (ηUL,NonCtrl) and the load increase caused by the new service

(ΔηUL) is lower than or equal to the corresponding admission threshold (UlNonCtrlThdForAMR,

UlNonCtrlThdForNonAMR, UlNonCtrlThdForOther, or UlNonCtrlThdForHo).

The sum of the RTWP-based total uplink load (ηUL,HSUPA-Total) and the load increase caused by the new

service (ΔηUL), or the sum of the total uplink load for preferential admission of R99 services

(ηUL,R99Prefer-Total) and the load increase caused by the new service (ΔηUL), is lower than or equal to

UlCellTotalThd.

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threshold is 100%.

For the HSUPA RAB

If the bearer type is the HSUPA RAB, the CAC algorithm combines the PBR-based admission decision with the load-based admission decision. The RNC admits an HSUPA service if either PBR-based admission or load-based admission succeeds.

IMS signaling services carried on HSUPA RABs are admitted directly.

PBR-based admission decisions

The uplink provided bit rate (PBR) is the effective uplink throughput on all UEs corresponding to a scheduling priority indicator (SPI) successfully received by the NodeB. PBR is reported by the NodeB to the RNC periodically.

The RNC performs PBR-based admission control only when the HSUPA PBR measurement switch is turned on (HSUPA_PBR_MEAS under the NBMCacAlgoSwitch parameter is set to 1). If the sum of PBRs of some UEs is larger than the sum of their GBRs multiplied by a certain factor, the RNC decides that the QoS requirements of the cell are met. In this case, the RNC can admit new services. PBR-based service admission succeeds if any of the following criteria are met:

−

−

−

Where

− ThdL is the PBR threshold (HsupaLowPriorityUserPBRThd) for all HSUPA users whose scheduling priorities are lower than the priority of users to be admitted.

− ThdE is the PBR threshold (HsupaEqualPriorityUserPBRThd) for all HSUPA users whose scheduling priorities are equal to the priority of users to be admitted.

− ThdGE is the PBR threshold (HsupaHighPriorityUserPBRThd) for all HSUPA users whose scheduling priorities are higher than the priority of users to be admitted.

Load-based admission decisions

For HSUPA scheduling services, if the sum of the RTWP-based total uplink load (ηUL,HSUPA-Total) and

the load increase caused by the new service (ΔηUL) is lower than or equal to UlCellTotalThd,

load-based service admission succeeds. Otherwise, load-based service admission fails.

For HSUPA non-scheduling services, load-based service admission succeeds only when both of the

following criteria are met:

− The sum of the RTWP-based total uplink load (ηUL,HSUPA-Total) and the load increase caused by the

new service (ΔηUL) is lower than or equal to UlCellTotalThd.






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− The sum of the uncontrollable uplink load (ηUL,NonCtrl) and the load increase caused by the new

service (ΔηUL) is lower than or equal to the corresponding admission threshold

(UlNonCtrlThdForAMR, UlNonCtrlThdForNonAMR, UlNonCtrlThdForOther, or

UlNonCtrlThdForHo).

Otherwise, load-based service admission fails.





threshold is 100%.

For the DC-HSUPA RAB

Only load-based admission decisions are made for DC-HSUPA RABs.

For DC-HSUPA non-scheduling services, load-based admission decisions are made only on the primary carrier. The admission method is the same as that for common HSUPA non-scheduling services.

A DC-HSUPA scheduling service is admitted if the load-based admission decision is successful on the primary or secondary carrier. The admission decision method is the same as that for a common HSUPA scheduling service. That is, the sum of the RTWP-based total uplink load (ηUL,HSUPA-Total) and the load increase after admitting the DC-HSUPA scheduling service (ΔηUL) is lower than or equal to UlCellTotalThd on the primary or secondary carrier.

Downlink Power-based Admission Decisions for R99 Cells Based on Algorithm 1

In an R99 cell, downlink power-based admission decisions are made according to the TCP-based total

downlink load, which is calculated in real time by the load measurement module of the RNC. It is

represented by ηDL,R99-Total and calculated using the following formula:

ηDL,R99-Total = ηTCP + ηDL,CCH

Where

ηTCP is equal to the transmitted carrier power (TCP), which is the ratio of the total transmitted power on

one downlink carrier to the maximum transmission power (set by the MaxTxPower parameter).

ηDL,CCH is the reserved load on the downlink common channels. It is set by the DlCCHLoadRsrvCoeff

parameter.

Upon receiving a service access request, the RNC makes the downlink power-based admission decision

for an R99 service. The procedure is as follows:

1. The RNC calculates the downlink load increase (ΔηDL) based on the initial admission rate of the

service and the pilot signal quality the user receives.

2. If the TCP-based total downlink load (ηDL,R99-Total) is lower than or equal to the corresponding

admission threshold (DlConvAMRThd, DlConvNonAMRThd, DlOtherThd, or DlHOThd), the RNC

admits the service. Otherwise, the RNC rejects the service.










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When the OLC algorithm switch (DL_UU_OLC under the NBMLdcAlgoSwitch parameter) is turned on, the downlink OLC triggering threshold (DlOlcTrigThd) is used as the admission threshold.

When the OLC algorithm switch (DL_UU_OLC under the NBMLdcAlgoSwitch parameter) is turned off, the admission

threshold is 100%.

Downlink Power-based Admission Decisions for HSPA Cells Based on Algorithm 1

In an HSPA cell, downlink power-based admission decisions are made based on the following load

measurements:

TCP-based total downlink load, which is represented by ηDL,HSDPA-Total and calculated using the

following formula:

ηDL,HSDPA-Total = ηTCP + ηDL,CCH + ηDL,HSUPARes

Where ηDL,HSUPARes is the power load reserved for HSUPA downlink control channels

(E-AGCH/E-RGCH/E-HICH). It is set by the DlHSUPARsvdFactor parameter. The other variables are

defined the same way as for an R99 cell in "Downlink Power-based Admission Decisions for R99 Cells

Based on Algorithm 1."

Downlink non-HSPA power load, which is represented by ηDL,NonHSPA. It is the ratio of the total

transmitted power of the codes not used for HS-PDSCH/HS-SCCH/E-AGCH/E-RGCH/E-HICH

transmission on one downlink carrier to the maximum transmission power (set by the MaxTxPower

parameter). ηDL,NonHSPA is measured by the NodeB and periodically reported to the RNC.

Load of HSDPA power requirement for GBR (HSDPA GBP), which is represented by ηDL,GBP and

calculated based on the GBR of HSDPA users in the cell. The NodeB periodically reports ηDL,GBP to the

RNC.

HSDPA GBP-based total downlink load, which is represented by ηDL,GBP-Total and calculated using the

following formula:

ηDL,GBP-Total = ηDL,NonHSPA + min (ηDL,GBP + ηDL,HSUPARes, ηDL,MaxHSPA) + ηDL,CCH

Where ηDL,MaxHSPA is the threshold for the maximum available HSDPA power. It is calculated based on

the HspaPower parameter.

The total downlink load for preferential admission of R99 services, which is represented by

ηDL,R99Prefer-Total. When the GBR for HSDPA services is too high, the HSDPA GBP-based total downlink

load may also be too high, and therefore R99 service admission is difficult. In this case, ηDL,R99Prefer-Total


ηDL,R99Prefer-Total = ηDL,NonHSPA + ThdHSDPAMaxGBP + ηDL,HSUPARes + ηDL,CCH

Where ThdHSDPAMaxGBP is the maximum guaranteed load threshold for HSDPA services when the RNC

makes an admission decision on an R99 service. It is set by the HsdpaMaxGBPThd parameter.

Upon receiving a service access request, the RNC performs the downlink power-based admission decision. The procedure is as follows:

1. The RNC calculates the downlink load increase (ΔηDL) based on the initial admission rate of the service and the pilot signal quality the user receives.





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2. The RNC determines whether to admit the service. The admission criteria vary with the bearer type in an HSPA cell.

The admission criteria for different bearer types in an HSPA cell are as follows:

For the DCH RAB

If the bearer type is the DCH RAB, a service is admitted only when the following criteria are both met:

1. The sum of the downlink non-HSPA power load (ηDL,NonHSPA) and the load increase caused by the

new service (ΔηDL) is lower than or equal to the corresponding admission threshold

(DlConvAMRThd, DlConvNonAMRThd, DlOtherThd, or DlHOThd).

2. The sum of the TCP-based total downlink load (ηDL,HSDPA-Total) and the load increase caused by the

new service (ΔηDL), the sum of the total downlink load based on the guaranteed power for HSDPA

services (ηDL,GBP-Total) and the load increase caused by the new service (ΔηDL), or the sum of the total

downlink load for preferential admission of R99 services (ηDL,R99Prefer-Total) and the load increase

caused by the new service (ΔηDL) is lower than or equal to the threshold for the total downlink power

of the cell (DlCellTotalThd). Otherwise, the RNC rejects the service.



When the OLC algorithm switch (DL_UU_OLC under the NBMLdcAlgoSwitch parameter) is turned on, the downlink

OLC triggering threshold (DlOlcTrigThd) is used as the admission threshold.


threshold is 100%.

If the current cell supports DC-HSDPA, the current total power of the DC-HSDPA cell group must also be lower than the sum of the total downlink power threshold of the primary cell and that of the secondary cell for DCH RAB admission.

For the HSDPA RAB

If the bearer type is the HSDPA RAB, the CAC algorithm combines the PBR-based admission control with the load-based admission control. The RNC admits an HSDPA service if either PBR-based admission or load-based admission succeeds.

PBR-based admission decisions

The downlink PBR is the effective downlink throughput on all UEs corresponding to an SPI successfully sent by the NodeB. PBR is reported by the NodeB to the RNC periodically.

The RNC performs PBR-based admission control only when the HSDPA PBR measurement switch is turned on (HSDPA_PBR_MEAS under the NBMCacAlgoSwitch parameter is set to 1). If the sum of PBRs of some UEs is larger than the sum of their GBRs multiplied by a certain factor, the RNC decides that the QoS requirements of the cell are met. In this case, the RNC can admit new services. PBR-based service admission succeeds if equation a (for streaming services) or equation b (for BE services) is satisfied:

a.

b.

Where





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− PBRstrm is the provided bit rate of all existing streaming services.

− Thdhsdpa-str is the admission threshold of the PBR-based decision for streaming services

(HsdpaStrmPBRThd).

− PBRbe is the provided bit rate of all existing BE services.

− Thdhsdpa-be is the admission threshold of the PBR-based decision for BE services

(HsdpaBePBRThd).

Load-based admission decisions

Load-based service admission succeeds only when both of the following criteria are met:

− The sum of the HSDPA GBP load (ηDL,GBP) and the load increase caused by the new service (ΔηDL) is

lower than or equal to the threshold for the maximum available HSDPA power, which is equal to 1-10

(-HspaPower/10).

− The sum of the TCP-based total downlink load (ηDL,HSDPA-Total) and the load increase caused by the

new service (ΔηDL), or the sum of the HSDPA GBP-based total downlink load (ηDL,GBP-Total) and the

load increase caused by the new service (ΔηDL) is lower than or equal to the threshold for the total

downlink power of the cell (DlCellTotalThd).

Otherwise, load-based service admission fails.





threshold is 100%.

If the current cell supports DC-HSDPA, the total power of the DC-HSDPA cell group must be lower than the sum of the downlink total power threshold of the primary cell and that of the secondary cell for HSDPA RAB admission.

Conversational services in the PS domain carried on HSPA RABs can be considered as streaming services in admission control.

For the DC-HSDPA RAB

If the bearer type is the DC-HSDPA RAB, admission control is based on the power of the DC-HSDPA cell group because the RAB is set up on both carriers.

The RNC admits DC-HSDPA RABs in the following situations:

PBR-based service admission in the DC-HSDPA cell group succeeds. PBR-based admission control in the DC-HSDPA cell group is similar to that in the SC-HSDPA cell. The difference between them is that users selected during an admission decision are DC-HSDPA users in the DC-HSDPA cell group, not SC-HSDPA users.

Load-based service admission in the DC-HSDPA cell group succeeds. This means that the total downlink load factor of the DC-HSDPA cell group is lower than the sum of the total downlink load threshold of the primary cell and that of the secondary cell.

For HSUPA Control Channels

The power for downlink control channels (E-AGCH/E-RGCH/E-HICH) is specified by the DlHSUPARsvdFactor parameter. Therefore, power-based admission control is not required on these channels.

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For MBMS

For details about MBMS, see the MBMS Feature Parameter Description.


There are two types of power-based admission decisions based on algorithm 2: uplink and downlink.

The ENU of MBMS downlink control channels (MICH and MCCH) is reserved. Therefore, power-based admission is not performed on these channels.

The ENU of HSUPA downlink control channels (E-AGCH, E-RGCH, and E-HICH) is reserved by DlHSUPARsvdFactor. Therefore, power-based admission is not performed on these channels.

Equivalent Number of Users

When the activation factor is 100%, a 12.2 kbit/s AMR service is defined as one ENU. The following aspects are considered when the ENU is calculated:

Cell type (a typical urban cell or a suburban cell)

Traffic QoS, which is the Block Error Rate (BLER)

Target number of retransmissions

The activity factor of the traffic type, which can be set with the SET UADMCTRL command.

Table 7-1 describes the ENU references for some services in typical scenarios. Configurations in typical scenarios are as follows:

The cell is a typical urban cell.

The target BLER of R99 users in the cell is 1%.

Target number of retransmissions:

− 10% for 2 ms TTI HSUPA users

− 1% for 10 ms TTI HSUPA users

Activation factors for different service types:

− Activation factor SRB = 10%

− Activation factor for AMR 12.2 kbit/s services = 50%

− Activation factor for DCH PS services = 10%

− Activation factor HSPA PS services = 100%

Table 7-1 ENU references in the typical scenarios

Service ENU

Uplink for DCH Downlink for DCH HSDPA 2 ms TTI HSUPA

10 ms TTI HSUPA

3.4 kbit/s SIG 0.2847 0.0420 0.0279 0.3107 0.1369

13.6 kbit/s SIG 0.5057 0.1115 0.0738 0.36 0.1655

3.4 kbit/s + 12.2 kbit/s

0.8196 0.5420 - 2.0242 1.0869

3.4 kbit/s + 8 kbit/s (PS)

0.7548 0.1044 0.545 3.5098 1.7611

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Service ENU

Uplink for DCH Downlink for DCH HSDPA 2 ms TTI HSUPA

10 ms TTI HSUPA


0.6500 0.1248 0.8749 3.8713 1.9786


0.6228 0.2187 1.463 4.5856 2.4106


0.7566 0.3252 2.5545 5.9806 3.2625


0.9248 0.5926 4.6851 8.6430 4.9192


1.0305 0.6615 5.2225 9.2279 5.2463


1.4399 1.0489 9.1193 13.1063 7.4698


2.1150 1.5523 13.9332 17.1227 9.8773

In Table 7-1,

HSDPA (3.4 kbit/s SIG or 13.6kbit/s SIG) indicates the ENU when SRB over HSDPA is used.

HSDPA (3.4 kbit/s + n kbit/s) indicates the ENU when SRB over DCH and TRB over HSDPA are used.

HSUPA (3.4 kbit/s SIG or 13.6kbit/s SIG) indicates the ENU when SRB over HSUPA is used.

HSUPA (3.4 kbit/s + n kbit/s) indicates the ENU when SRB over DCH and TRB over HSUPA are used.

Uplink ENU Resource Admission Decisions

In the uplink, ENU-based admission decisions are made based on the following load measurements:

Uplink total ENU load, which is represented by ηUL,ENU and calculated using the following formula:

ηUL,ENU = ENUUL,Total/ENUUL,Max + ηUL,CCH

Where

− ENUUL,Total is the sum of ENUs corresponding to the RABs in a cell.

− ENUUL,Max is the maximum ENU of a cell. It is set by the UlTotalEqUserNum parameter.

− ηUL,CCH is the reserved load on the uplink common channels. It is set by the UlCCHLoadFactor

parameter.

The total uplink load of ENU for preferential admission of R99 services, which is represented by

ηUL,R99Prefer-ENU. When the GBR for HSUPA services is too high, the total uplink load of ENU may also

be too high, and therefore R99 service admission is difficult. In this case, ηUL,R99Prefer-ENU ensures that

R99 services are preferentially admitted. It is calculated using the following formula:

ηUL,R99Prefer-ENU = ηUL,DCH_ENU + Thd HSUPAMaxGBP

Where

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− ηUL,DCH_ENU is the ENU load of all DCH RABs in a cell. It is the ratio of the sum of ENUs for all DCH

RABs to the maximum ENU in a cell (UlTotalEqUserNum).

− Where ThdHSUPAMaxGBP is the maximum guaranteed load threshold for HSUPA services when the

RNC makes an admission decision on an R99 service. It is set by the HsupaMaxGBPThd

parameter.

Upon receiving a service access request, the RNC makes the uplink ENU-based admission decision.

If a cell is in the OLC state triggered by the RTWP:

The system checks whether the uplink total ENU load (ηUL,ENU) of the cell is lower than

CellUlEquNumCapacity if the control RTWP anti-interference function switch

(RTWP_RESIST_DISTURB under the NBMCacAlgoSwitch parameter) is turned on. If it is lower than

CellUlEquNumCapacity, the RNC admits the service. Otherwise, the RNC rejects the access

request.

The RNC rejects the access request if the control RTWP anti-interference function is disabled.

If a cell is not in the OLC state, the RNC makes the uplink ENU-based admission decision. The

procedure is as follows:

1. The RNC estimates the ENU load (ΔηUL,ENU) based on the initial admission rate of the service.

2. The RNC determines whether to admit the service.

− If the bearer type is the DCH RAB, the RNC admits a service when the sum of the uplink total ENU

load (ηUL,ENU) and the ENU load increase caused by the new service (ΔηUL,ENU) is lower than or equal

to the corresponding admission threshold (UlNonCtrlThdForAMR, UlNonCtrlThdForNonAMR,

UlNonCtrlThdForOther, or UlNonCtrlThdForHo), or when the sum of the total uplink ENU load for

preferential admission of R99 services (ηUL,R99Prefer-ENU) and the ENU load increase caused by the

new service (ΔηUL,ENU) is lower than or equal to UlCellTotalThd. Otherwise, the RNC rejects the

access request.

− If the bearer type is the HSUPA RAB, the RNC admits a service only when the sum of the uplink total

ENU load (ηUL,ENU) and the ENU load increase caused by the new service (ΔηUL,ENU) is lower than or

equal to the corresponding admission threshold (UlNonCtrlThdForAMR,

UlNonCtrlThdForNonAMR, UlNonCtrlThdForOther, or UlNonCtrlThdForHo). Otherwise, the

RNC rejects the access request.





threshold is 100%.

For DC-HSUPA RABs

DC-HSUPA RABs are admitted only to the primary carrier. Admission control for DC-HSUPA RABs is the same as that for common HSUPA RABs.

The ENU corresponding to the DC-HSUPA RABs is counted into the ENU load of the primary carrier.

Downlink ENU Resource Admission Decisions

In the downlink, ENU-based admission decisions are made based on the following load measurements:

Downlink total ENU load, which is represented by ηDL,ENU and calculated using the following formula:



















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ηDL,ENU = ENUDL,Total/ENUDL,Max + ηDL,CCH

Where

− ENUDL,Total is the sum of ENUs corresponding to the RABs in a cell.

− ENUDL,Max is the maximum ENU of a cell. It is set by the DlTotalEqUserNum parameter.

− ηDL,CCH is the reserved load on the downlink common channels. It is set by the

DlCCHLoadRsrvCoeff parameter.

The total downlink load for preferential admission of R99 services, which is represented by

ηDL,R99Prefer-ENU. When the GBR for HSDPA services is too high, the HSDPA GBP-based total downlink

load may also be too high, and therefore R99 service admission is difficult. In this case, ηDL,R99Prefer-ENU


ηDL,R99Prefer-ENU = ηDL,DCH_ENU + ThdHSDPAMaxGBP

Where

− ηDL,DCH_ENU is the ENU load of all DCH RABs in a cell. It is the ratio of the sum of ENUs for all DCH

RABs to the maximum ENU in a cell (DlTotalEqUserNum).

− ThdHSDPAMaxGBP is the maximum guaranteed load threshold for HSDPA services when the RNC

makes an admission decision on an R99 service. It is set by the HsdpaMaxGBPThd parameter.

Upon receiving a service access request, the RNC makes the downlink ENU-based admission decision.

For non-DC-HSDPA RABs

The RNC estimates the ENU load (ΔηDL,ENU) of the service based on the initial admission rate, and

then makes the ENU-based admission decision.

− For DCH RABs, if the sum of the downlink total ENU load (ηDL,ENU) and the ENU load increase

caused by the new service (ΔηDL,ENU) is lower than or equal to the corresponding admission threshold

(DlConvAMRThd, DlConvNonAMRThd, DlOtherThd or DlHOThd), or if the sum of the total

downlink load for preferential admission of R99 services (ηDL,R99Prefer-ENU) and the ENU load increase

caused by the new service (ΔηDL,ENU) is lower than or equal to DlCellTotalThd, the RNC admits the

service. Otherwise, the RNC rejects the access request.

− For HSDPA RABs, if the sum of the downlink total ENU load (ηDL,ENU) and the ENU load increase

caused by the new service (ΔηDL,ENU) is lower than or equal to the corresponding admission threshold

(DlConvAMRThd, DlConvNonAMRThd, DlOtherThd or DlHOThd), the RNC admits the service.

Otherwise, the RNC rejects the access request.





threshold is 100%.

For DC-HSDPA RABs

The admission succeeds when the total ENU of the DC-HSDPA cell group divided by the maximum ENU of the DC-HSDPA cell group is lower than the sum of admission thresholds of the primary cell and that of the secondary cell.

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Algorithm 3 is similar to algorithm 1. The only difference is that the estimated load increase in algorithm 3 is always set to 0.

Based on the current cell load, the RNC determines whether the cell load exceeds the threshold, with the estimated load increase set to 0. If the cell load exceeds the threshold, the RNC rejects the access request. If not, the RNC admits the service.

7.6 Uplink Power-Based Admission Algorithm 4 for RAB Setup

Algorithm 4 makes admission decisions based on the total uplink load ηUL, Actual-Total that corresponds to

the actual uplink service load. ηUL, Actual-Total is calculated using the following formula:

ηUL, Actual-Total = ηUL, Actual + ηUL,CCH

Where

ηUL, Actual is the actual uplink service load. It considers RTWP measurement results, the total uplink

service load and the uplink minimum guaranteed load. Here, the total uplink service load includes R99

service load, HSUPA service load, and control channel load. The uplink minimum guaranteed load

includes R99 service load, HSUPA service load required by the HSUPA GBR, and control channel load.

For details, see Load Control Feature Parameter Description.

ηUL,CCH is the reserved load on the uplink common channels. It is set by the UlCCHLoadFactor

parameter.

Measuring the uplink minimum guaranteed load depends on the hardware. For details, see Load Control Feature Parameter Description.

When the feature of independent demodulation of signals from multiple RRUs in one cell is configured, this cell does not support algorithm 4.

If the measurement on the actual uplink service load for a cell is unavailable, for example, when the relevant NodeB boards cannot report the measurement results, the RNC performs admission control for the cell based on ENU. For details about ENU-based admission control, see section 7.4 "Power-based Admission Algorithm 2 for RAB Setup."

Upon receiving a service access request, the RNC makes the admission decision based on the total

uplink load that corresponds to the actual uplink service load. The procedure is as follows:


For details about the initial admission rate, see the Load Control Feature Parameter Description.

2. If the sum of the total uplink load ηUL, Actual-Total that corresponds to the actual uplink service load and

the load increase caused by the new service (ΔηUL) is lower than or equal to the corresponding

access threshold (UlNonCtrlThdForAMR, UlNonCtrlThdForNonAMR, UlNonCtrlThdForOther, or

UlNonCtrlThdForHo), the RNC admits the service. Otherwise, the RNC rejects the access request.





threshold is 100%.

For DC-HSUPA cells, the uplink load introduced by the DC-HSUPA UE is calculated and then apportioned on the primary and secondary carriers based on the UE rate ratio per carrier. The RNC decides whether to admit a DC-HSUPA UE based on the total uplink load and uplink load increment

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introduced by the DC-HSUPA UE on the primary carrier and secondary carriers. The admission decision method is the same with that of SC-HSUPA.

For DC-HSUPA non-scheduling services, admission decisions based on the total uplink load are made only on the primary carrier.

For DC-HSUPA scheduling service is admitted if admission decision based on the total uplink load is successful on the primary or secondary carrier.

Compared with algorithm 1 and algorithm 3, algorithm 4 admits more users and increases the user access success rate when the cell serves few users but the RTWP is large due to high traffic volume. Compared with algorithm 2, algorithm 4 tightens admission control and reduces the number of admitted UEs when the total number of uplink equivalent users (UlTotalEqUserNum) is set to a large value.

Algorithm 4 is the power admission algorithm based on the actual uplink cell load. Calculation of the actual uplink cell load involves the background noise. The value of background noise is updated automatically if the auto-adaptive background noise update algorithm is enabled; otherwise, it is a preset value. If the value of background noise involved in calculation is smaller than the actual value, the calculated uplink cell load is larger than its actual value and the admission success rate decreases. If the value of background noise involved in calculation is larger than the actual value, the admission success rate increases. However, the RTWP increases and the call drop rate is raised after more users have accessed the cell.


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Call Admission Control 8 Common Channel Admission



8-1

8 Common Channel Admission

This section describes CAC for common channels, which are classified in the following manner:

Common channels except the enhanced FACH and enhanced RACH channels

The common channels except the EFACH (E-FACH for short) and ERACH (E-RACH for short) channels are referred to as traditional common channels in the following sections.

E-FACH and E-RACH channels

8.1 CAC on Traditional Common Channels

The amount of consumed resources for traditional common channels keeps a steady level in general. The RNC does not perform admission control on users over traditional common channels except the users over the FACH, on which the RNC will perform admission control by considering the number of online users on the FACH and the cell overload status.

CAC for Users on the FACH

The number of online users on the FACH per cell is limited by RNC. Generally, the maximum number of online users on the FACH is 30. The number can be increased to 60 by turning on FACH_60_USER_SWITCH in the CacSwitch parameter of the SET UCACALGOSWITCH command. The restriction on the number of online users on the FACH can be cancelled by turning on FACH_USER_NUM_NOT_CTRL of the NBMCacAlgoSwitch parameter of the ADD UCELLALGOSWITCH command.

CAUTION

When the FACH_USER_NUM_NOT_CTRL switch is turned on, the number of available radio resources will decrease

and FACHs will possibly become congested if the number of online users on the FACH has reached or exceeded the maximum number specified by FACH_60_USER_SWITCH and the number is still increasing.

If internal RNC specifications are reached, the RNC rejects subsequent service requests on the FACH.

The RNC performs flow control in case of FACH congestion in a cell. For details, see Flow Control Feature Parameter Description.

With CAC, an overloaded cell can accept FACH resource requests only from emergency calls, detachments, and registrations. Admitting or rejecting FACH resource requests from other service types in an overloaded cell is specified by the FACH_UU_ADCTRL switch of the NBMCacAlgoSwitch parameter.

When this switch is turned on, FACH resource requests from other service types in an overloaded cell are rejected.

When this switch is turned off, the RNC decides whether to admit the request according to the number of online users on the FACH per cell.

Reserved Resources for Traditional Common Channels

The reserved resources for traditional common channels are as follows:

NodeB CE resources

The NodeB reserves CE resources for traditional common channels. For details about CE consumption for common channels, see CE Resource Management Feature Parameter Description.

Iub transmission resources

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The RNC reserves Iub transmission bandwidth for traditional common channels. For details about CAC based on Iub transmission resources, see the Transmission Resource Management Feature Parameter Description.

Code resources

Traditional common channels are first set up when a cell is established. Channel code resources have been allocated when channel setup is complete.

Power resources

The RNC reserves some power resources for traditional common channels and the resource reserving thresholds are configurable.

− Reserved power load factor for the uplink common channel: It is set by the UlCCHLoadFactor parameter.

− Reserved power load factor for the downlink common channels: It is set by the DlCCHLoadRsrvCoeff parameter.

− Reserved power load factor for the HSUPA downlink common control channels, including E-AGCH, E-RGCH, and E-HICH channels: It is set by the DlHSUPARsvdFactor parameter.

The reserved power specified by UlCCHLoadFactor/DlCCHLoadRsrvCoeff is mainly used for RACH and FACH. The

power consumed for other types of traditional common channels is fixed and calculated in the total downlink power load of the cell, and therefore does not need to be reserved.

8.2 CAC on the E-FACH or E-RACH

The E-FACH and E-RACH channels are over HSPA channels, which consume more resources than traditional common channels do. Therefore, the RNC implements CAC based on Iub transmission resources, number of users, and power resources in turn.

For details about CAC based on Iub transmission resources, see the Transmission Resource Management Feature Parameter Description.

CAC Based on the Number of E-FACH and E-RACH Users

The admission criteria based on the number of E-FACH and E-RACH users are as follows:

For a resource request on the E-FACH

If the number of E-FACH users in a cell does not exceed the value of MAXEFACHUserNum after the resource request is admitted, the RNC will admit the resource request. Otherwise, the RNC will reject the resource request.

For a resource request on the E-RACH

If the number of E-RACH users in a cell does not exceed the value of MAXERACHUserNum after the resource request is admitted, the RNC will admit the resource request. Otherwise, the RNC will reject the resource request.

CAC Based on Power Resources

The admission policy based on the power resources for resource requests on the E-FACH and E-RACH is similar to that for resource requests on common HSPA channels.

Power-based admission algorithms 1, 3 and 4

When one of algorithms 1, 3 and 4 is selected in NBMUlCacAlgoSelSwitch or NBMDlCacAlgoSelSwitch, the admission policy for resource requests on the E-FACH and E-RACH is basically the same as that for RAB setup requests of the SC-HSDPA/SC-HSUPA services. The only difference is that the estimated load increase of a new E-FACH or E-RACH user is set to 0 because E-FACH and E-RACH activities are low.










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Power-based admission algorithm 2

This algorithm is not implemented for resource requests on the E-FACH and E-RACH.

When algorithm 2 is selected in NBMUlCacAlgoSelSwitch or NBMDlCacAlgoSelSwitch, the power-based admission algorithm does not take effect for resource requests on the E-FACH and E-RACH. In this situation, the RNC implements CAC based only on Iub resources and number of users.

With CAC, an overloaded cell can accept E-FACH resource requests only from emergency calls, detachments, and registrations. Admitting or rejecting E-FACH resource requests from other service types in an overloaded cell is specified by the FACH_UU_ADCTRL switch of the NBMCacAlgoSwitch parameter.

When this switch is turned on, E-FACH resource requests from other service types in an overloaded cell are rejected.

When this switch is turned off, the RNC decides whether to admit the request according to the number of E-FACH users per cell.

The FACH_UU_ADCTRL switch of the NBMCacAlgoSwitch parameter also takes effect for E-RACH users in an overloaded cell. This is because the E-RACH depends on the E-FACH and E-RACH users consume the E-FACH resources in the downlink.





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Call Admission Control 9 Feature Deployment



9-1

9 Feature Deployment

9.1 WRFD-020101 Admission Control

This section describes how to activate, verify, and deactivate the basic feature WRFD-020101 Admission Control.

9.1.1 Prerequisites

Dependencies on Hardware

Uplink power admission algorithm 4 introduced in RAN14.0 is based on the actual service load, which is reported by the NodeB. However, some boards cannot support the measurement of the service load.

− The BTS3812E, BTS3812A and BTS3812AE do not support uplink power admission algorithm 4.

− The DBS3800 does not support uplink power admission algorithm 4.

− If the 3900 series base station is configured with the WBBPa board or the RRU3801C 20W, uplink power admission algorithm 4 is not supported. In other configurations, the algorithm is supported.

Dependencies on Other Features

This feature does not depend on other features.

License

This feature is not under license control.

9.1.2 Activation Procedure

Step 1 Activating code resource admission

Run the RNC MML command MOD UCELLCAC (CME single configuration: UMTS Cell Configuration Express > Cell Parameters > Cell Oriented CAC Algorithm Parameters; CME batch modification center: Modifying UMTS Cell Parameters in Batches) with Dl handover credit and code reserved SF set to an appropriate value.

Step 2 Activating power resource admission

1. Run the RNC MML command MOD UCELLALGOSWITCH (CME single configuration: UMTS Cell Configuration Express > Cell Parameters > Cell Algorithm Switches; CME batch modification center: Modifying UMTS Cell Parameters in Batches). In this step, select associated cell-oriented power admission control algorithms from the Cell CAC algorithm switch drop-down list, and select an appropriate algorithm from both the Uplink CAC algorithm switch and Downlink CAC algorithm switch drop-down lists according to the network plan.

2. Run the RNC MML command MOD UCELLCAC (CME single configuration: UMTS Cell Configuration Express > Cell Parameters > Cell Oriented CAC Algorithm Parameters; CME batch modification center: Modifying UMTS Cell Parameters in Batches) to set power resource admission parameters to appropriate values.

Step 3 Activating NodeB credit resource admission

1. Run the RNC MML command SET UCACALGOSWITCH (CME single configuration: UMTS Radio Global Configuration Express > CAC Algorithm Switch Configuration > CAC Algorithm Switch; CME batch modification center: Modifying RNC Parameters in Batches). In this step, select NODEB_CREDIT_CAC_SWITCH from the CAC algorithm switch drop-down list to turn on the NodeB-level CE admission switch.

2. Run the RNC MML command MOD UCELLALGOSWITCH (CME single configuration: UMTS Cell Configuration Express > Cell Parameters > Cell Algorithm Switches; CME batch modification center:

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Modifying UMTS Cell Parameters in Batches). In this step, select CRD_ADCTRL(Credit Admission Control Algorithm) from the Cell CAC algorithm switch drop-down list to turn on the NodeB-level credit admission switch.

3. Run the RNC MML command MOD UCELLCAC (CME single configuration: UMTS Cell Configuration Express > Cell Parameters > Cell Oriented CAC Algorithm Parameters; CME batch modification center: Modifying UMTS Cell Parameters in Batches). In this step, set UL handover credit reserved SF to an appropriate value.

Step 4 Activating Iub resource admission

This Iub resource admission is automatically activated, and does not need to set parameters.

9.1.3 Verification Procedure

The procedure for verifying downlink admission control on R99 non-real-time PS services based on the number of equivalent subscribers is as follows:

1. Enable a UE in the idle state to camp on the test cell.

2. Set the PS service type to interactive on the HLR.

3. Run the RNC MML command MOD UCELLCAC to set DL total equivalent user number of the test cell to 1.

4. Connect the UE to a laptop through the USB port and initiate a PS service. Expected result: The UE fails to initiate the PS service. In the Iu Interface Trace window, an RANAP_RAB_ASSIGNBMENT_RESP message sent from the RNC to the CN is displayed, containing the cause value no-radio-resources-available-in-target-cell.

5. Run the RNC MML command MOD UCELLCAC to set DL total equivalent user number of the test cell to 80.

6. Connect the UE to a laptop through the USB port and initiate a PS service. Expected result: The data service is set up successfully.

9.1.4 Deactivation Procedure

Step 1 Deactivating code resource admission

The code resource admission does not need to be deactivated.

Step 2 Deactivating power resource admission

Run the RNC MML command MOD UCELLALGOSWITCH (CME single configuration: UMTS Cell Configuration Express > Cell Parameters > Cell Algorithm Switches; CME batch modification center: Modifying UMTS Cell Parameters in Batches). In this step, set Uplink CAC algorithm switch and Downlink CAC algorithm switch to ALGORITHM_OFF.

Step 3 Deactivating NodeB credit resource admission

1. Run the RNC MML command SET UCACALGOSWITCH (CME single configuration: UMTS Radio Global Configuration Express > CAC Algorithm Switch Configuration > CAC Algorithm Switch; CME batch modification center: Modifying RNC Parameters in Batches). In this step, deselect NODEB_CREDIT_CAC_SWITCH from the CAC algorithm switch drop-down list.

2. Run the RNC MML command MOD UCELLALGOSWITCH (CME single configuration: UMTS Cell Configuration Express > Cell Parameters > Cell Algorithm Switches; CME batch modification center: Modifying UMTS Cell Parameters in Batches). In this step, deselect CRD_ADCTRL(Credit Admission Control Algorithm) from the Cell CAC algorithm switch drop-down list.

Step 4 Deactivating Iub resource admission






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This Iub resource admission does not need to be deactivated.

9.1.5 Example

//Activating code resource admission

MOD UCELLCAC: CellId=11, UlNonCtrlThdForAMR=75, UlNonCtrlThdForNonAMR=75, UlNonCtrlThdForOther=60,

DlConvAMRThd=80, DlConvNonAMRThd=80, DlOtherThd=75, UlNonCtrlThdForHo=80, DlHOThd=85, UlCellTotalThd=83,

DlCellTotalThd=90, DlHoCeCodeResvSf=SF32;

//Activating power resource admission

MOD UCELLALGOSWITCH: CellId=11, NBMUlCacAlgoSelSwitch=ALGORITHM_FIRST,

NBMDlCacAlgoSelSwitch=ALGORITHM_SECOND;

MOD UCELLALGOSWITCH: CellId=11, NBMCacAlgoSwitch=HSDPA_UU_ADCTRL-1&HSDPA_GBP_MEAS-1&HSDPA_PBR_MEAS-1;

MOD UCELLCAC: CellId=11, MaxHsdpaUserNum=64, MaxUlTxPowerforConv=24, MaxUlTxPowerforInt=24;

//Activating NodeB credit resource admission

SET UCACALGOSWITCH: CacSwitch=NODEB_CREDIT_CAC_SWITCH-1;

MOD UCELLALGOSWITCH: CellId=11, NBMCacAlgoSwitch=CRD_ADCTRL-1;

MOD UCELLCAC: CellId=11, UlHoCeResvSf=SF16;

//Deactivating power resource admission

MOD UCELLALGOSWITCH: CellId=11, NBMUlCacAlgoSelSwitch=ALGORITHM_OFF,

NBMDlCacAlgoSelSwitch=ALGORITHM_OFF;

//Deactivating NodeB credit resource admission



9.2 WRFD-01061202 HSUPA Admission Control

This section describes how to activate, verify, and deactivate the optional feature WRFD-01061202 HSUPA Admission Control.

9.2.1 Prerequisites


This feature does not depend on the hardware.


The feature WRFD-010612 HSUPA Introduction Package must be configured before this feature is activated.

License

The license "High Speed Uplink Packet Access" on the BSC6900 side and the license "the number of NodeBs with HSUPA function enabled" on the NodeB side have been activated. For details about the license items and how to activate the license, see License Management Feature Parameter Description.


Step 1 Activating power resource admission

1. Run the RNC MML command MOD UCELLALGOSWITCH (CME single configuration: UMTS Cell Configuration Express > Cell Parameters > Cell Algorithm Switches; CME batch modification center: Modifying UMTS Cell Parameters in Batches). In this step, select an uplink Call Admission Control (CAC) algorithm through the parameter Uplink CAC algorithm switch and a downlink CAC algorithm through the parameter Downlink CAC algorithm switch.

2. For HSUPA services, run the RNC MML command MOD UCELLALGOSWITCH (CME single configuration: UMTS Cell Configuration Express > Cell Parameters > Cell Algorithm Switches; CME

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batch modification center: Modifying UMTS Cell Parameters in Batches). In this step, select the corresponding admission algorithm switches from the Cell CAC algorithm switch drop-down list, such as HSUPA_PBR_MEAS(HSUPA PBR Meas Algorithm), HSUPA_EDCH_RSEPS_MEAS(HSUPA EDCH RSEPS Meas Algorithm), and HSUPA_UU_ADCTRL(HSUPA UU Load Admission Control Algorithm).

3. Run the RNC MML command MOD UCELLCAC (CME single configuration: UMTS Cell Configuration Express > Cell Parameters > Cell Oriented CAC Algorithm Parameters; CME batch modification center: Modifying UMTS Cell Parameters in Batches) to set power resource admission parameters.

Step 2 Activating NodeB credit resource admission

1. Run the RNC MML command SET UCACALGOSWITCH (CME single configuration: UMTS Radio Global Configuration Express > CAC Algorithm Switch Configuration > CAC Algorithm Switch; CME batch modification center: Modifying RNC Parameters in Batches). In this step, set CAC algorithm switch to NODEB_CREDIT_CAC_SWITCH(NodeB Credit CAC Switch).

2. Run the RNC MML command MOD UCELLALGOSWITCH (CME single configuration: UMTS Cell Configuration Express > Cell Parameters > Cell Algorithm Switches; CME batch modification center: Modifying UMTS Cell Parameters in Batches). In this step, set Cell CAC algorithm switch to CRD_ADCTRL(Credit Admission Control Algorithm) to turn on the cell-oriented credit resource admission switch.

3. Run the RNC MML command MOD UCELLCAC (CME single configuration: UMTS Cell Configuration Express > Cell Parameters > Cell Oriented CAC Algorithm Parameters; CME batch modification center: Modifying UMTS Cell Parameters in Batches). In this step, set the NodeB credit resource admission parameters Ul handover credit reserved SF and Dl handover credit and code reserved SF to appropriate values.

Step 3 Activating Iub resource admission

The Iub resource admission is unconditionally performed and does not need to be activated.

Run the RNC MML command MOD IPPATH (CME single configuration: NodeB Configuration Express > IUB_RNC > IP

Transport > IP Path; CME batch modification center: not supported) or MOD AAL2PATH (CME single configuration: NodeB Configuration Express > IUB_RNC > ATM Transport > AAL2 Path; CME batch modification center: not supported) to modify the Iub bandwidth.


1. UE1 and UE2 are in idle state and camp on the test cell. The test cell supports HSUPA and has only two users UE1 and UE2.

2. On the HLR, set the PS service type to background or interactive.

3. Run the RNC MML command MOD UCELLCAC to set Maximum HSUPA user number of the test cell to 1.

4. Establish an HSUPA PS service on UE1, and then check the rb-mappinginfo information element in the RRC_RB_SETUP message traced over the Uu interface.

Expected result: The HSUPA PS service is successfully set up on UE1. The value of ul-TrCH-Type is e-dch.

5. Establish an HSUPA PS service on UE2, and then check the rb-mappinginfo information element in the RRC_RB_SETUP message traced over the Uu interface.

Expected result: The HSUPA PS service fails to set up on UE2. The value of rrc-Stateinditator is CELL_DCH.

6. Release all PS services in the test cell.






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7. Run the RNC MML command MOD UCELLCAC to set Maximum HSUPA user number of the test cell to 20.

8. Establish an HSUPA PS service on UE1 and UE2 respectively.

Expected result: An HSUPA PS service is successfully established on UE1 and UE2 respectively.

9. Run the following command to check whether Iub resource admission is activated.

Run the RNC MML command DSP IPPATH or DSP AAL2PATH to check whether any bandwidth is occupied.


Step 1 Deactivating power resource admission

Run the RNC MML command MOD UCELLALGOSWITCH (CME single configuration: UMTS Cell Configuration Express > Cell Parameters > Cell Algorithm Switches; CME batch modification center: Modifying UMTS Cell Parameters in Batches) to set the cell-oriented power resource admission switches (Uplink CAC algorithm switch and Downlink CAC algorithm switch) to ALGORITHM_OFF.

Step 2 Deactivating NodeB credit resource admission

1. Run the RNC MML command SET UCACALGOSWITCH (CME single configuration: UMTS Radio Global Configuration Express > CAC Algorithm Switch Configuration > CAC Algorithm Switch; CME batch modification center: Modifying RNC Parameters in Batches). In this step, deselect the NodeB credit resource admission switch NODEB_CREDIT_CAC_SWITCH(NodeB Credit CAC Switch) from the CAC algorithm switch drop-down list.

2. Run the RNC MML command MOD UCELLALGOSWITCH (CME single configuration: UMTS Cell Configuration Express > Cell Parameters > Cell Algorithm Switches; CME batch modification center: Modifying UMTS Cell Parameters in Batches). In this step, deselect the cell-oriented credit resource admission switch CRD_ADCTRL(Credit Admission Control Algorithm) from the Cell CAC algorithm switch drop-down list.

Step 3 Deactivating Iub resource admission

The Iub resource admission is unconditionally performed and does not need to be deactivated.

9.2.5 Example




MOD UCELLALGOSWITCH: CellId=11,

NBMCacAlgoSwitch=HSUPA_UU_ADCTRL-1&HSUPA_PBR_MEAS-1&HSUPA_EDCH_RSEPS_MEAS-1;

MOD UCELLCAC: CellId=11, MaxUlTxPowerforConv=24, MaxUlTxPowerforInt=24, MaxHsupaUserNum=20;




MOD UCELLCAC: CellId=11, UlHoCeResvSf=SF16, DlHoCeCodeResvSf=SF32;








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9.3 WRFD-01061003 HSDPA Admission Control

This section describes how to activate, verify, and deactivate the optional feature WRFD-01061003 HSDPA Admission Control.

9.3.1 Prerequisites


This feature does not depend on the hardware.


The feature WRFD-010610 HSDPA Introduction Package must be configured before this feature is activated.

License

The licenses "HSDPA RRM package 1" and "HSDPA function" on the NodeB side have been activated. For details about the license items and how to activate the license, see License Management Feature Parameter Description.


Step 1 Activating power resource admission.

1. Run the RNC MML command MOD UCELLALGOSWITCH (CME single configuration: UMTS Cell Configuration Express > Cell Parameters > Cell Algorithm Switches; CME batch modification center: Modifying UMTS Cell Parameters in Batches). In this step, set Uplink CAC algorithm switch and Downlink CAC algorithm switch according to the network planning.

2. For HSDPA services, run the RNC MML command MOD UCELLALGOSWITCH (CME single configuration: UMTS Cell Configuration Express > Cell Parameters > Cell Algorithm Switches; CME batch modification center: Modifying UMTS Cell Parameters in Batches). In this step, select related admission algorithms in the Cell CAC algorithm switch parameter. The available admission algorithms are HSDPA_GBP_MEAS(HSDPA GBP Meas Algorithm), HSDPA_PBR_MEAS(HSDPA PBR Meas Algorithm), and HSDPA_UU_ADCTRL(HSDPA UU Load Admission Control Algorithm).

3. Run the RNC MML command MOD UCELLCAC (CME single configuration: UMTS Cell Configuration Express > Cell Parameters > Cell Oriented CAC Algorithm Parameters; CME batch modification center: Modifying UMTS Cell Parameters in Batches) to set power resource admission related parameters and the maximum number of HSDPA users.

If HSDPA_PBR_MEAS(HSDPA PBR Meas Algorithm) is selected in Cell CAC algorithm switch, set Hsdpa streaming PBR threshold and HSDPA best effort PBR threshold in this step.

Step 2 Activating NodeB credit resource admission.

1. Run the RNC MML command SET UCACALGOSWITCH (CME single configuration: UMTS Radio Global Configuration Express > CAC Algorithm Switch Configuration > CAC Algorithm Switch; CME batch modification center: Modifying RNC Parameters in Batches). In this step, select NODEB_CREDIT_CAC_SWITCH in CAC algorithm switch.

2. Run the RNC MML command MOD UCELLALGOSWITCH (CME single configuration: UMTS Cell Configuration Express > Cell Parameters > Cell Algorithm Switches; CME batch modification center: Modifying UMTS Cell Parameters in Batches). In this step, select CRD_ADCTRL(Credit Admission Control Algorithm) in Cell CAC algorithm switch.








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Step 3 Activating Iub interface resource admission.

The Iub interface resource admission is mandatory and is activated automatically.

Run the RNC MML command MOD IPPATH (CME single configuration: NodeB Configuration Express > IUB_RNC > IP Transport > IP Path; CME batch modification center: not supported) or MOD AAL2PATH (CME single configuration:

NodeB Configuration Express > IUB_RNC > ATM Transport > AAL2 Path; CME batch modification center: not supported) to change the Iub interface bandwidth.


1. Enable two UEs UE1 and UE2 in idle mode to camp on the test cell. The test cell must support HSDPA and has only two users UE1 and UE2.

2. On the HLR, set PS service type to background or interactive.

3. Run the RNC MML command MOD UCELLCAC to set Maximum HSDPA user number of the test cell to 1.

4. Use UE1 to initiate an HSDPA PS service.

Expected result: The service is set up successfully. Check the RRC_RB_SETUP message over the Uu interface. You can view that the new-H-RNTI IE is under the rb-mappinginfo IE, and the value of the dl-TransportChannel-Type IE is hsdsch.

5. Use UE2 to initiate an HSDPA PS service.

Expected result: The service fails to set up. Check the RRC_RB_SETUP message over the Uu interface. You can view that the new-H-RNTI IE is not under the rb-mappinginfo IE, and the value of the dl-TransportChannel-Type IE is dch.

6. Release all the PS services in the test cell.

7. Run the RNC MML command MOD UCELLCAC to set Maximum HSDPA user number of the test cell to 64.

8. Use UE1 and UE2 to initiate an HSDPA PS service.

Expected result: Services are set up successfully on UE1 and UE2.


Step 1 Deactivating power resource admission.

Run the RNC MML command MOD UCELLALGOSWITCH (CME single configuration: UMTS Cell Configuration Express > Cell Parameters > Cell Algorithm Switches; CME batch modification center: Modifying UMTS Cell Parameters in Batches). In this step, set Uplink CAC algorithm switch and Downlink CAC algorithm switch to ALGORITHM_OFF.

Step 2 Deactivating NodeB credit resource admission.

1. Run the RNC MML command SET UCACALGOSWITCH (CME single configuration: UMTS Radio Global Configuration Express > CAC Algorithm Switch Configuration > CAC Algorithm Switch; CME batch modification center: Modifying RNC Parameters in Batches). In this step, deselect NODEB_CREDIT_CAC_SWITCH in Cell CAC algorithm switch.

2. Run the RNC MML command MOD UCELLALGOSWITCH (CME single configuration: UMTS Cell Configuration Express > Cell Parameters > Cell Algorithm Switches; CME batch modification center: Modifying UMTS Cell Parameters in Batches). In this step, select CRD_ADCTRL(Credit Admission Control Algorithm) in Cell CAC algorithm switch.

Step 3 Deactivating Iub interface resource admission.

The Iub interface resource admission is mandatory and does not need to be deactivated.




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9.3.5 Example




MOD UCELLALGOSWITCH: CellId=11,

NBMCacAlgoSwitch=HSDPA_UU_ADCTRL-1&HSDPA_GBP_MEAS-1&HSDPA_PBR_MEAS-1;

MOD UCELLCAC: CellId=11, HsdpaStrmPBRThd=70, HsdpaBePBRThd=30, MaxHsdpaUserNum=64,

MaxUlTxPowerforConv=24, MaxUlTxPowerforInt=24;




MOD UCELLCAC: CellId=11, UlHoCeResvSf=SF16, DlHoCeCodeResvSf=SF32;







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Call Admission Control 10 Parameters



10-1

10 Parameters

Table 10-1 Parameter description

Parameter ID NE MML Command Feature ID Feature Name Description

BackgroundNoise

BSC6900 ADD UCELLCAC

MOD UCELLCAC

WRFD-020101

WRFD-020102

Admission Control

Load Measurement

Meaning:If [Auto-Adaptive Background Noise Update Switch] is set to OFF, it is used to set background noise of the cell. If [Auto-Adaptive Background Noise Update Switch] is set to ON, new background noise is restricted by this parameter and "BgnAbnormalThd". For detailed information of this parameter, refer to the 3GPP TS 25.133.

GUI Value Range:0~621

Actual Value Range:-112~-50

Unit:None

Default Value:61

CacSwitch BSC6900 SET UCACALGOSWITCH


Meaning:1. NODEB_CREDIT_CAC_SWITCH: The system performs CAC based on the usage state of NodeB credit. When the NodeB's credit is not enough, the system rejects new access requests.

2. FACH_60_USER_SWITCH (Switch for Allowing a Maximum of 60 UEs Carried on the FACH): Whether a maximum of 60 or 30 UEs can be carried on the FACH. When this switch is turned on, a maximum of 60 UEs can be carried on the FACH. When this switch is turned off, a maximum of 30 UEs can



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be carried on the FACH.

GUI Value Range:NODEB_CREDIT_CAC_SWITCH(NodeB Credit CAC Switch), FACH_60_USER_SWITCH(FACH Allowed Max 60 Users Switch)

Actual Value Range:NODEB_CREDIT_CAC_SWITCH, FACH_60_USER_SWITCH

Unit:None

Default Value:NODEB_CREDIT_CAC_SWITCH-1&FACH_60_USER_SWITCH-0

CellUlEquNumCapacity


MOD UCELLCAC


Meaning:Used to check whether the uplink load is overlarge in a cell. If the uplink load in the cell is greater than this parameter, the uplink load will be judged as overlarge, Otherwise the uplink load will not be judged as overlarge. If the uplink load is not overlarge, and the switch of RTWP anti-interference algorithm is enabled, the RTWP anti-interference algorithm is validated. Admission requests will be accepted even when the RTWP value is great, and related OLC operations will be cancelled.


Actual Value Range:0~1

Unit:%

Default Value:40





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CSRABCacOptSwitch

BSC6900 ADD UCELLALGOSWITCH

MOD UCELLALGOSWITCH


Meaning:Whether resource allocation is optimized during CS RAB setups. When this parameter is set to ON, the RNC allocates power resources, code resources, channel element (CE) resources during CS RAB setups based on the loose CAC algorithm. This setting increases the CS service setup success rate. When this parameter is set to OFF, the RNC does not allocate resources during CS RAB setups based on the loose CAC algorithm.

GUI Value Range:OFF, ON

Actual Value Range:ON, OFF

Unit:None

Default Value:OFF

DlCCHLoadRsrvCoeff


MOD UCELLCAC


Meaning:Different admission policies are used for dedicated channel and common channel users. For common channel users, resources instead of separate power admission decision are reserved. For dedicated channel users, according to the current load factor and the characteristics of the new call, the CAC algorithm predicts the new TX power with the assumption of admitting the new call, then plus with the premeditated common channel DL load factor to get the predicted DL load factor. Then, compare it with the DL



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admission threshold. If the value is not higher than the threshold, the call is admitted; otherwise, rejected.



Unit:%

Default Value:0

DlCellTotalThd BSC6900 ADD UCELLCAC

MOD UCELLCAC


Meaning:Admission threshold of the total cell downlink power. If the value is too high, too many users will be admitted. However, the throughput of a single user is easy to be limited. If the value is too low, cell capacity will be wasted.



Unit:%

Default Value:90

DlConvAMRThd


MOD UCELLCAC


Meaning:1. The percentage of the conversational AMR service threshold to the 100% downlink load. The parameter is used for controlling the AMR service admission. That is, when an AMR service is accessing, the BSC6900 evaluates the measurement value of the downlink load after the service is accessed. If the DL load of a cell is higher than this threshold after the access of an AMR speech service, this service will be rejected. If the DL load of a cell will not be higher than this threshold, this service will








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be admitted.

2. The DL load factor thresholds include parameters of [DL threshold of Conv AMR service],[DL threshold of Conv non_AMR service], [DL threshold of other services] and [DL handover access threshold]. The four parameters can be used to limit the proportion between the conversational service, handover user and other services in a specific cell, and to guarantee the access priority of the conversational AMR service.



Unit:%

Default Value:80

DlConvNonAMRThd


MOD UCELLCAC


Meaning:1. The percentage of the conversational non-AMR service threshold to the 100% downlink load. The parameter is used for controlling the non-AMR service admission. That is, when a non-AMR service is accessing, the BSC6900 evaluates the measurement value of the downlink load after the service is accessed. If the DL load of a cell is higher than this threshold after the access of a non-AMR speech service, this service will be rejected. If the DL load of a cell will not be higher than this threshold, this service will be admitted.





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2. The DL load factor thresholds include parameters of [DL threshold of Conv AMR service], [DL threshold of Conv non_AMR service], [DL threshold of other services] and [DL handover access threshold]. The four parameters can be used to limit the proportion between the conversational service, handover user and other services in a specific cell, and to guarantee the access priority of the conversational non-AMR service.



Unit:%

Default Value:80

DlHoCeCodeResvSf


MOD UCELLCAC


Meaning:This parameter defines the downlink code resource and credit resource that are reserved for handovers. The code resource and credit resource are indicated by the spreading factor (SF). SFOFF indicates that no resources are reserved. If the SF value corresponding to the remaining resources on the downlink is smaller than this parameter value after a new service is admitted, the service request is rejected.

GUI Value Range:SF4(SF4), SF8(SF8), SF16(SF16), SF32(SF32), SF64(SF64), SF128(SF128),





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SF256(SF256), SFOFF(SFOFF)

Actual Value Range:SF4, SF8, SF16, SF32, SF64, SF128, SF256, SFOFF

Unit:None

Default Value:SF32(SF32)

DlHOThd BSC6900 ADD UCELLCAC

MOD UCELLCAC


Meaning:The percentage of the handover service admission threshold to the 100% downlink load. The parameter is used for controlling the handover admission. That is, when a service is handing over to a cell, the RNC evaluates the measurement value of the downlink load after the service is accessed. If the DL load of a cell is higher than this threshold after the access, this service will be rejected. If the DL load of a cell will not be higher than this threshold, this service will be admitted.



Unit:%

Default Value:85

DlHSUPARsvdFactor


MOD UCELLCAC


Meaning:Reserved DL power factor for HSUPA user. The higher the value is, the more resources reserved for the HSUPA control channel, which leads to resource waste. If the value is too low, HSUPA user quality may be impacted.









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10-8



Unit:%

Default Value:0

DlOlcTrigThd BSC6900 ADD UCELLLDM

MOD UCELLLDM

WRFD-020107 Overload Control

Meaning:If the ratio of DL load of the cell to the downlink capacity is not lower than this threshold, the DL overload and congestion control function of the cell is triggered. The value of the OLC release threshold should not be much lower than or close to the OLC trigger threshold, or the system state will have a ping-pong effect easily. The recommended difference between the OLC release threshold and the OLC trigger threshold is higher than 10%. It is desirable to set the two parameters a bit higher given that the difference between OLC trigger threshold and OLC release threshold is fixed.



Unit:%

Default Value:95

DlOtherThd BSC6900 ADD UCELLCAC

MOD UCELLCAC


Meaning:1. The percentage of other service thresholds to the 100% downlink load.The services refer to other admissions except the conversational AMR service,conversational non-AMR service,and handover scenarios. The parameter is used for controlling other service admissions.That is,when


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a service is accessing,the BSC6900 evaluates the measurement value of the downlink load after the service is accessed.If the DL load of a cell is higher than this threshold after the access of a service, this service will be rejected. If the DL load of a cell will not be higher than this threshold, this service will be admitted.

2. The DL load factor thresholds include parameters of [DL threshold of Conv AMR service],[DL threshold of Conv non_AMR service], [DL threshold of other services] and [DL handover access threshold].The four parameters can be used to limit the proportion between the conversational service,handover user and other services in a specific cell, and to guarantee the access priority of other services.



Unit:%

Default Value:75

DlRRCCeCodeResvSf


MOD UCELLCAC


Meaning:Threshold for RRC admission based on DL credit and code resources. The value SFOFF indicates that credit resources are not reserved for handover. If the remaining DL resources in a cell are lower than this threshold after a new service is set up, the new service is





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rejected.

GUI Value Range:SF4(SF4), SF8(SF8), SF16(SF16), SF32(SF32), SF64(SF64), SF128(SF128), SF256(SF256), SFOFF(SFOFF)


Unit:None


DlTotalEqUserNum


MOD UCELLCAC


Meaning:When the ENU-based admission algorithm is used for downlink admission control, this parameter defines the total number of equivalent users corresponding to the 100% downlink load. Set this parameter to suit the admission control threshold and the network's actual situation.



Unit:None

Default Value:80

HsdpaBePBRThd


MOD UCELLCAC


Meaning:Average throughput admission threshold of the HSDPA best effort traffic. If the sum of PBR of all the accessed HSDPA BE users is lower than the average throughput admission threshold of the HSDPA BE service multiplied by the sum of









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GBR of all the accessed HSDPA BE users, it indicates that the QoS of the accessed users cannot be satisfied and new HSDPA BE services are not allowed. Otherwise, the QoS can be satisfied and new HSDPA BE services are allowed.



Unit:%

Default Value:30

HsdpaMaxGBPThd


MOD UCELLCAC


Meaning:Threshold of the maximum guaranteed power for HSDPA users. This threshold limits the power that can be used by HSDPA users. Thus, some power resources are reserved for DCH users to ensure their network access.



Unit:%

Default Value:100

HsdpaStrmPBRThd


MOD UCELLCAC


Meaning:Average throughput admission threshold of the HSDPA streaming service. If the sum of PBR of all the accessed streaming users is lower than the average throughput admission threshold of the HSDPA streaming service multiplied by the sum of GBR of all the accessed streaming users, it indicates that the QoS of the accessed users cannot be satisfied









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and new HSDPA streaming services are not allowed. Otherwise, the QoS can be satisfied and new HSDPA streaming services are allowed.



Unit:%

Default Value:70

HspaPower BSC6900 ADD UCELLHSDPA

MOD UCELLHSDPA

WRFD-01061004

HSDPA Power Control

Meaning:This parameter specifies the offset between the total HSPA power and the maximum transmission power of a cell. The total HSPA power is the maximum value of HSPA dynamical power can be adjusted. For details about this parameter, refer to 3GPP TS 25.308.

GUI Value Range:-500~0

Actual Value Range:-50~0

Unit:0.1dB

Default Value:0

HsupaEqualPriorityUserPBRThd


MOD UCELLCAC


Meaning:Threshold of all the HSUPA user PBR whose schedule priority is the same as that of users to be admitted.



Unit:%

Default Value:100

HsupaHighPriorityUserPBRThd


MOD UCELLCAC


Meaning:Threshold of all the HSUPA user PBR whose schedule priority is higher than that of


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users to be admitted.



Unit:%

Default Value:100

HsupaLowPriorityUserPBRThd


MOD UCELLCAC


Meaning:Threshold of all the HSUPA user PBR whose schedule priority is lower than that of users to be admitted.



Unit:%

Default Value:100

HsupaMaxGBPThd


MOD UCELLCAC


Meaning:Threshold of the maximum guaranteed power for HSUPA users. This threshold limits the power that can be used by HSUPA users. Thus, some power resources are reserved for DCH users to ensure their network access.



Unit:%

Default Value:100

MAXEFACHUserNum


MOD UCELLCAC


Meaning:The parameter indicates the max user number the E-FACH channel can supports.



Unit:None

Default Value:300














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MaxERACHUserNum


MOD UCELLCAC

None None Meaning:Maximum number of UEs that can access a cell using the E-RACH function.

This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center for technical support.



Unit:None

Default Value:300

MaxHsdpaUserNum


MOD UCELLCAC

WRFD-020101

WRFD-010654

Admission Control

128 HSDPA Users per Cell

Meaning:Maximum number of users supported by the HSDPA channel. The user in this parameter refers to the user with services on the HSDPA channel, regardless of the number of RABs carried on the HSDPA channel. Maximum HSDPA user number cannot exceed the HSDPA capability of the NodeB product, In practice, the value can be set based on the cell type and the richness of the available HSDPA power and code resources.



Unit:None

Default Value:64

MaxHsupaUserNum


MOD UCELLCAC

WRFD-020101

WRFD-010670

Admission Control

128 HSUPA Users per Cell

Meaning:Maximum number of users supported by the HSUPA channel. The user in this parameter refers to the













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user with services on the HSUPA channel, regardless of the number of RABs carried on the HSUPA channel. Maximum HSUPA user number cannot exceed the HSUPA capability of the NodeB product, In practice, the value can be set based on the cell type and the richness of the available HSUPA power and code resources.



Unit:None

Default Value:20

MaxTxPower BSC6900 ADD UCELLSETUP

MOD UCELL

WRFD-020501 Open Loop Power Control

Meaning:Sum of the maximum transmit power of all DL channels in a cell. For detailed information of this parameter, refer to 3GPP TS 25.433.



Unit:0.1dBm

Default Value:430

NBMCacAlgoSwitch


MOD UCELLALGOSWITCH

WRFD-020101

WRFD-020102

WRFD-010202

WRFD-021102

Admission Control

Load Measurement

UE State in Connected Mode (CELL-DCH, CELL-PCH, URA-PCH, CELL-FACH)

Cell Barring

Meaning:Whether to enable the algorithms related to cell service admission. Selecting a switch enables the corresponding algorithm and clearing a switch disables the corresponding algorithm.

1. CRD_ADCTRL: Control Cell Credit admission control algorithm. Only when NODEB_CREDIT_CAC_SWITCH which is set by


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the SET UCACALGOSWITCH command and this switch are on,the Cell Credit admission control algorithm is valid.

2. HSDPA_UU_ADCTRL: Control HSDPA UU Load admission control algorithm.This switch does not work when uplink is beared on HSUPA and downlink is beared on HSDPA.

3. HSUPA_UU_ADCTRL: Control HSUPA UU Load admission control algorithm. This switch does not work when uplink is beared on HSUPA and downlink is beared on HSDPA.

4. MBMS_UU_ADCTRL: Control MBMS UU Load admission control algorithm.

5. HSDPA_GBP_MEAS: Control HSDPA power requirement for GBR (GBP) measurement. The NodeB will report the GBP of HSDPA users to the RNC after the measurement is enabled.

6. HSDPA_PBR_MEAS: Control HSDPA provided bit rate (PBR) measurement. The NodeB will report the PBR of HSDPA users to the RNC after the measurement is enabled.

7. SYS_INFO_UPDATE_FOR_IU_RST: When this switch and the RNC-level SYS_INFO_UPDATE_FOR_IU_RST(SET URRCTRLSWITCH )are

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turned on, the Cell Barring function is available to the Iu interface.

8. HSUPA_PBR_MEAS: Control HSUPA PBR measurement. The NodeB will report the PBR of HSUPA users to the RNC after the measurement is enabled.

9. HSUPA_EDCH_RSEPS_MEAS: Control HSUPA Provided Received Scheduled EDCH Power Share measurement.

10. EMC_UU_ADCTRL: Control power admission for emergency user.

11. RTWP_RESIST_DISTURB: Control algorithm of resisting disturb when RTWP is abnormal.

12. SIGNALING_SHO_UL_AC_SWITCH: Whether to prohibit UEs that have established RRC connections but not start processing any services yet from performing soft handovers. When this switch is turned on, such UEs cannot access target cells by means of soft handover if the OLC procedure is progressing in target cells.

13. FACH_UU_ADCTRL: Admission control switch for the FACH on the Uu interface. This switch determines whether to admit a user in the RRC state on the CELL_FACH. 1) If this switch is enabled: if the

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current cell is congested due to overload, and the users are with RAB connection requests or RRC connection requests(except the cause of ""Detach"", ""Registration"", or ""Emergency Call""), the users will be rejected. Otherwise FACH user admission procedure is initiated. A user can access the cell after the procedure succeeds. 2) If this switch is disabled: FACH user admission procedure is initiated without the consideration of cell state.

14. MIMOCELL_LEGACYHSDPA_ADCTRL: Legacy HSDPA admission control algorithm in MIMO cell.

15. FAST_DORMANCY_ADCTRL: Whether to enable or disable state transition of users in the CELL-DCH state, who are enabled with fast dormancy, to ease FACH congestion in a cell. If this switch is turned off in a cell, state transition of such users is disabled. Note that when this switch is turned off in multiple cells under an BSC6900, signaling storm may occur. As a result, the CPU usage of the BSC6900, NodeB, and SGSN increases greatly, leading to service setup failure.This switch has been removed from RAN13, so that this switch is now invalid.

16.

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FACH_USER_NUM_NOT_CTRL: Whether to allow for FACH UEs without restrictions.

GUI Value Range:CRD_ADCTRL(Credit Admission Control Algorithm), HSDPA_UU_ADCTRL(HSDPA UU Load Admission Control Algorithm), HSUPA_UU_ADCTRL(HSUPA UU Load Admission Control Algorithm), MBMS_UU_ADCTRL(MBMS UU Load Admission Control Algorithm), HSDPA_GBP_MEAS(HSDPA GBP Meas Algorithm), HSDPA_PBR_MEAS(HSDPA PBR Meas Algorithm), SYS_INFO_UPDATE_FOR_IU_RST(System Info Update Switch for Iu Reset), HSUPA_PBR_MEAS(HSUPA PBR Meas Algorithm), HSUPA_EDCH_RSEPS_MEAS(HSUPA EDCH RSEPS Meas Algorithm), EMC_UU_ADCTRL(emergency call power admission), RTWP_RESIST_DISTURB(RTWP Resist Disturb Switch), SIGNALING_SHO_UL_AC_SWITCH(Signaling Sho Ul power cac switch), FACH_UU_ADCTRL(FACH power cac switch), MIMOCELL_LEGACYHSDPA_ADCTRL(Legacy HSDPA Admission Control Algorithm in MIMO Cell ), FAST_DORMANCY_AD

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CTRL(Fast Dormancy User Admission Control Algorithm), FACH_USER_NUM_NOT_CTRL(FACH USER UNLIMITED)

Actual Value Range:CRD_ADCTRL, HSDPA_UU_ADCTRL, HSUPA_UU_ADCTRL, MBMS_UU_ADCTRL, HSDPA_GBP_MEAS, HSDPA_PBR_MEAS, SYS_INFO_UPDATE_FOR_IU_RST, HSUPA_PBR_MEAS, HSUPA_EDCH_RSEPS_MEAS, EMC_UU_ADCTRL, RTWP_RESIST_DISTURB, SIGNALING_SHO_UL_AC_SWITCH, FACH_UU_ADCTRL, MIMOCELL_LEGACYHSDPA_ADCTRL, FAST_DORMANCY_ADCTRL, FACH_USER_NUM_NOT_CTRL

Unit:None

Default Value:CRD_ADCTRL-1&HSDPA_UU_ADCTRL-0&HSUPA_UU_ADCTRL-0&MBMS_UU_ADCTRL-0&HSDPA_GBP_MEAS-0&HSDPA_PBR_MEAS-0&SYS_INFO_UPDATE_FOR_IU_RST-0&HSUPA_PBR_MEAS-0&HSUPA_EDCH_RSEPS_MEAS-0&EMC_UU_ADCTRL-1&RTWP_RESIST_DISTURB-0&SIGNALING_SHO_UL_AC_SWITCH-0&FACH_UU_ADCTRL-0&MIMOCELL_LEGACYHSDPA_ADCTRL-0&FAST_DORMANCY_ADCTRL-1&FACH_USER_NUM_NO

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T_CTRL-0

NBMDlCacAlgoSelSwitch


MOD UCELLALGOSWITCH


Meaning:The following parameter values represent different downlink admission control algorithms:

ALGORITHM_OFF: Downlink admission control algorithm disabled.

ALGORITHM_FIRST: Power-based increment prediction algorithm for downlink admission control.

ALGORITHM_SECOND: ENU-based admission algorithm for downlink admission control.

ALGORITHM_THIRD: Power-based non-increment prediction algorithm for downlink admission control.

GUI Value Range:ALGORITHM_OFF, ALGORITHM_FIRST, ALGORITHM_SECOND, ALGORITHM_THIRD

Actual Value Range:ALGORITHM_OFF, ALGORITHM_FIRST, ALGORITHM_SECOND, ALGORITHM_THIRD

Unit:None

Default Value:None

NBMLdcAlgoSwitch


MOD UCELLALGOSWITCH

WRFD-020106

WRFD-020102

WRFD-020104

WRFD-020105

WRFD-020107

Load Reshuffling

Load Measurement

Intra Frequency Load Balance

Potential User

Meaning:Whether to activate the cell load control algorithm. The following are meanings of different values:

1. The algorithms with the above values represent are as follow:INTRA_FREQUEN

















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WRFD-140217 Control

Overload Control

Inter-Frequency Load Balancing Based on Configurable Load Threshold

CY_LDB: Intra-frequency load balance algorithm. It is also named cell breathing algorithm.Based on the cell load, this algorithm changes the pilot power of the cell to control the load between intra-frequency cells.

2. PUC: Potential user control algorithm. Based on the cell load, this algorithm changes the selection/reselection parameters of a cell to lead the UE to a lighter loaded cell.

3. UL_UU_OLC: Uplink Uu-interface overload congestion control algorithm. When the cell is overloaded in the uplink, this algorithm reduces the uplink cell load by quick transport format (TF) restriction, channel switchover for BE services to common channels, or releasing UEs.

4. DL_UU_OLC: Downlink Uu-interface overload congestion control algorithm. When the cell is overloaded in the downlink, this algorithm reduces the downlink cell load by quick TF restriction, channel switchover for BE services to common channels, or releasing UEs.

5. UL_UU_LDR: UL UU load reshuffling algorithm. When the cell is heavily loaded in UL, this algorithm reduces the cell load in UL by using inter-frequency

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load handover, BE service rate reduction, uncontrollable real-time service QoS renegotiation, CS should be inter-RAT, PS should be inter-RAT handover, CS should not be inter-RAT and, PS should not be inter-RAT handover and AMR service rate reduction.

6. DL_UU_LDR: DL UU load reshuffling algorithm. When the cell is heavily loaded in DL, this algorithm reduces the cell load in DL by using inter-frequency load handover, BE service rate reduction, uncontrollable real-time service QoS renegotiation, CS should be inter-RAT, PS should be inter-RAT handover, CS should not be inter-RAT and, PS should not be inter-RAT handover, AMR service rate reduction and MBMS service power decrease.

7. OLC_EVENTMEAS: Control OLC event measurement. This algorithm starts the OLC event measurement.

8. CELL_CODE_LDR: Code reshuffling algorithm. When the cell CODE is heavily loaded, this algorithm reduces the cell CODE load by using BE service rate reduction and code tree reshuffling.

9. CELL_CREDIT_LDR: Credit reshuffling algorithm. When the cell credit is heavily loaded, this algorithm reduces

WCDMA RAN




10-24


the credit load of the cell by using BE service rate reduction, uncontrollable real-time service QoS renegotiation, CS should be inter-RAT, PS should be inter-RAT handover, CS should not be inter-RAT and PS should not be inter-RAT handover.

10. UL_INTRA_FREQUENCY_ULB: Intra-frequency load balancing algorithm based on RTWP. CPICH power of a cell is adjusted according to RTWP load in the cell, triggering intra-frequency, inter-frequency, or inter-RAT handover of UEs at the edge of the cell. As a result, the call drop rate in the cell is reduced.

11. UL_UU_CLB: Whether to activate the uplink-cell-load-based CLB algorithm. With this algorithm, the RNC determines whether to enable a cell to enter the CLB state based on its uplink cell load. Once the cell enters the CLB state, the RNC periodically initiates measurement-based inter-frequency handovers to balance load across inter-frequency cells.

12. DL_UU_CLB: Whether to activate the downlink-cell-load-based CLB algorithm. With this algorithm, the RNC determines whether to enable a cell to enter the CLB state based on its

WCDMA RAN




10-25


downlink cell load. Once the cell enters the CLB state, the RNC periodically initiates measurement-based inter-frequency handovers to balance load across inter-frequency cells.

13. CELL_CODE_CLB: Whether to activate the cell-code-resource-based CLB algorithm. With this algorithm, the RNC determines whether to enable a cell to enter the CLB state based on the code usage in the cell. Once the cell enters the CLB state, the RNC periodically initiates measurement-based inter-frequency handovers to balance load across inter-frequency cells.

14. CELL_CREDIT_CLB: Whether to activate the cell-credit-resource-based CLB algorithm. With this algorithm, the RNC determines whether to enable a cell to enter the CLB state based on the credit usage in the cell. Once the cell enters the CLB state, the RNC periodically initiates measurement-based inter-frequency handovers to balance load across inter-frequency cells.

15. If INTRA_FREQUENCY_LDB, PUC, ULOLC, DLOLC, ULLDR, UDLLDR, OLC_EVENTMEAS, CELL_CODE_LDR, CELL_CREDIT_LDR,

WCDMA RAN




10-26


UL_INTRA_FREQUENCY_ULB, UL_UU_CLB, DL_UU_CLB, CELL_CODE_CLB and CELL_CREDIT_CLB are selected, the corresponding algorithms will be enabled; otherwise, disabled.

GUI Value Range:INTRA_FREQUENCY_LDB(Intra Frequency LDB Algorithm), PUC(Potential User Control Algorithm), UL_UU_LDR(Uplink UU LDR Algorithm), DL_UU_LDR(Downlink UU LDR Algorithm), UL_UU_OLC(Uplink UU OLC Algorithm), DL_UU_OLC(Downlink UU OLC Algorithm), OLC_EVENTMEAS(OLC Event Meas Algorithm), CELL_CODE_LDR(Code LDR Algorithm), CELL_CREDIT_LDR(Credit LDR Algorithm), UL_INTRA_FREQUENCY_ULB(Intra-Frequency Load Balancing Algorithm Based on RTWP), UL_UU_CLB, DL_UU_CLB, CELL_CODE_CLB, CELL_CREDIT_CLB

Actual Value Range:INTRA_FREQUENCY_LDB, PUC, UL_UU_LDR, DL_UU_LDR, UL_UU_OLC, DL_UU_OLC, OLC_EVENTMEAS, CELL_CODE_LDR, CELL_CREDIT_LDR, UL_INTRA_FREQUENCY_ULB, UL_UU_CLB, DL_UU_CLB, CELL_CODE_CLB,

WCDMA RAN




10-27


CELL_CREDIT_CLB

Unit:None

Default Value:INTRA_FREQUENCY_LDB-0&PUC-0&UL_UU_LDR-0&DL_UU_LDR-0&UL_UU_OLC-0&DL_UU_OLC-0&OLC_EVENTMEAS-0&CELL_CODE_LDR-0&CELL_CREDIT_LDR-0&UL_INTRA_FREQUENCY_ULB-0&UL_UU_CLB-0&DL_UU_CLB-0&CELL_CODE_CLB-0&CELL_CREDIT_CLB-0

NBMUlCacAlgoSelSwitch


MOD UCELLALGOSWITCH


Meaning:The algorithms with the above values represent are as follow:

ALGORITHM_OFF: Uplink power admission control algorithm disabled.

ALGORITHM_FIRST: Power-based increment prediction algorithm for uplink admission control.

ALGORITHM_SECOND: ENU-based admission algorithm for uplink admission control.

ALGORITHM_THIRD: Power-based non-increment prediction algorithm for uplink admission control.

ALGORITHM_FOURTH: Service load-based algorithm for uplink admission control.

GUI Value Range:ALGORITHM_OFF, ALGORITHM_FIRST, ALGORITHM_SECOND, ALGORITHM_THIRD, ALGORITHM_FOURTH









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10-28


Actual Value Range:ALGORITHM_OFF, ALGORITHM_FIRST, ALGORITHM_SECOND, ALGORITHM_THIRD, ALGORITHM_FOURTH

Unit:None

Default Value:None

NodeBHsdpaMaxUserNum

BSC6900 ADD UNODEBALGOPARA

MOD UNODEBALGOPARA

WRFD-01061003

HSDPA Admission Control

Meaning:Maximum number of HSDPA users of the NodeB. If the HSDPA user access is rejected by the NodeB, you can infer that the HSDPA licenses are insufficient. New HSDPA licenses are required.



Unit:None

Default Value:6144

NodeBHsupaMaxUserNum

BSC6900 ADD UNODEBALGOPARA

MOD UNODEBALGOPARA

WRFD-01061202

HSUPA Admission Control

Meaning:Maximum number of HSUPA users of the NodeB. If the HSUPA user access is rejected by the NodeB, you can infer that the HSUPA licenses are insufficient. New HSUPA licenses are required.



Unit:None

Default Value:6144

NRTRRCCacThdOffset


MOD UCELLCAC


Meaning:Power threshold offset for RRC CAC on non-real-time services. With the strict CAC, the uplink power admission threshold equals NRTRRCCacThdOffset



../RNCParaHtml/mbsc/m-mml/add-unodebalgopara.html



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WCDMA RAN




10-29


plus UlNonCtrlThdForOther and the downlink power admission threshold equals NRTRRCCacThdOffset plus DlOtherThd for non-real-time services. The RNC identifies services as non-real-time services if the establishment cause in the RRC CONNECTION REQUEST message is one of the following:

1. Originating Interactive Call.

2. Originating Background Call.

3. Terminating Interactive Call.

4. Terminating Background Call.

5. Originating High Priority Signaling.

6. Terminating High Priority Signaling.

7. Originating Subscribed traffic Call.



Unit:%

Default Value:5

OtherRRCCacThdOffset


MOD UCELLCAC


Meaning:Power threshold offset for RRC call admission control (CAC) on services other than real-time and non-real-time services. With the strict CAC, the uplink power admission threshold equals OtherRRCCacThdOffset plus UlOlcTrigThd and





WCDMA RAN




10-30


the downlink power admission threshold equals OtherRRCCacThdOffset plus DlOlcTrigThd for the other services. The RNC identifies services as the other services if the establishment cause in the RRC CONNECTION REQUEST message is none of the following:

1. Originating Conversational Call.

2. Terminating Conversational Call.

3. Originating Streaming Call.

4. Terminating Streaming Call.

5. Originating Interactive Call.

6. Originating Background Call.

7. Terminating Interactive Call.

8. Terminating Background Call.

9. Originating High Priority Signaling.

10. Terminating High Priority Signaling.

11. Originating Subscribed traffic Call.



Unit:%

Default Value:0

RRCCacChoice

BSC6900 ADD UCELLALGOSWIT


Meaning:RRC connection admission control (CAC) mode.





WCDMA RAN




10-31


CH

MOD UCELLALGOSWITCH

When this parameter is set to LOOSE_CAC, RRC connection admission adopts a loose admission threshold. When this parameter is set to STRICT_CAC, the RRC admission threshold equals the RAB admission threshold plus the RRC admission threshold offset for the corresponding service.

GUI Value Range:LOOSE_CAC, STRICT_CAC

Actual Value Range:LOOSE_CAC, STRICT_CAC

Unit:None

Default Value:LOOSE_CAC

RRCCeCodeCacChoice


MOD UCELLALGOSWITCH


Meaning:RRC connection admission control (CAC) mode. When this parameter is set to LOOSE_CAC, the original RRC admission threshold remains unchanged. When this parameter is set to STRICT_CAC, the RRC admission threshold equals the RAB admission threshold plus the RRC admission threshold offset for the corresponding service.

GUI Value Range:LOOSE_CAC, STRICT_CAC

Actual Value Range:LOOSE_CAC, STRICT_CAC

Unit:None

Default












WCDMA RAN




10-32


Value:LOOSE_CAC

RTRRCCacThdOffset


MOD UCELLCAC


Meaning:Power threshold offset for RRC connection admission control (CAC) on real-time services. With the strict CAC, the uplink power admission threshold equals RTRRCCacThdOffset plus UlNonCtrlThdForAMR and the downlink power admission threshold equals RTRRCCacThdOffset plus DlConvAMRThd for real-time services. The RNC identifies services as real-time services if the establishment cause in the RRC CONNECTION REQUEST message is one of the following:

1. Originating Conversational Call.

2. Terminating Conversational Call.

3. Originating Streaming Call.

4. Terminating Streaming Call.



Unit:%

Default Value:5

UlCCHLoadFactor


MOD UCELLCAC


Meaning:The admission control decision is only for dedicated channels. For common channels, some resources instead of a special admission procedure are reserved.

In the UL, according to









WCDMA RAN




10-33


the current load factor and the characteristics of the new call, the UL CAC algorithm predicts the new traffic channels load factor with the assumption of admitting the new call, then plus with the premeditated common channel UL load factor to get the predicted UL load factor. Then, compare it with the UL admission threshold. If the value is not higher than the threshold, the call is admitted; otherwise, rejected.



Unit:%

Default Value:0

UlCellTotalThd BSC6900 ADD UCELLCAC

MOD UCELLCAC


Meaning:Admission threshold of total cell uplink power. This parameter is related to the target load of the uplink schedule.



Unit:%

Default Value:83

UlHoCeResvSf


MOD UCELLCAC


Meaning:Uplink Credit Reserved by Spread Factor for HandOver. SFOFF means that none of them are reserved for handover.

GUI Value Range:SF4(SF4), SF8(SF8), SF16(SF16), SF32(SF32), SF64(SF64), SF128(SF128), SF256(SF256),








WCDMA RAN




10-34


SFOFF(SFOFF)


Unit:None


UlHsDpcchRsvdFactor


MOD UCELLCAC


Meaning:Load resources reserved for the uplink HS-DPCCH carrying ACK/NACK. For an HSPA-capable cell, the admission control algorithm makes admission decisions by using an estimated load factor. The estimated load factor is the sum of estimated uplink load factor based on service properties, uplink load factor for common channels, and uplink load factor for the HS-DPCCH carrying ACK/NACK.



Unit:%

Default Value:0

UlNonCtrlThdForAMR


MOD UCELLCAC


Meaning:1. The percentage of the conversational AMR service threshold to the 100% uplink load. The parameter is used for controlling the AMR service admission. That is, when an AMR service is accessing, the BSC6900 evaluates the measurement value of the uplink load after the service is accessed. If the UL load of a cell is higher than this threshold after the access of an AMR









WCDMA RAN




10-35


speech service, this service will be rejected. If the UL load of a cell will not be higher than this threshold, this service will be admitted. The UL load factor thresholds include parameters of [UL threshold of Conv AMR service], [UL threshold of Conv non_AMR service], [UL handover access threshold] and [UL threshold of other services]. The four parameters can be used to limit the proportion between the conversational service, handover user and other services in a specific cell, and to guarantee the access priority of the conversational AMR service. If the value is too high the system load after admission may be over large, which impacts system stability and leads to system congestion. If the value is too low, the possibility of user rejects may increase, resulting in waste in idle resources.

2. When the Uplink CAC algorithm switch is set to ALGORITHM_FOURTH, the Recommended Value should be changed to 83.



Unit:%

Default Value:75

UlNonCtrlThdForHo


MOD UCELLCAC


Meaning:1. The percentage of the handover service admission threshold to the 100% uplink load.The parameter is used for





WCDMA RAN




10-36


controlling the handover admission. That is, when a service is handing over to a cell, the RNC evaluates the measurement value of the uplink load after the service is accessed. If the UL load of a cell is higher than this threshold after the access, this service will be rejected. If the UL load of a cell will not be higher than this threshold, this service will be admitted.




Unit:%

Default Value:80

UlNonCtrlThdForNonAMR


MOD UCELLCAC


Meaning:1. The percentage of the conversational non-AMR service threshold to the 100% uplink load. The parameter is used for controlling the non-AMR service admission. That is, when a non-AMR service is accessing, the BSC6900 evaluates the measurement value of the uplink load after the service is accessed. If the UL load of a cell is higher than this threshold after the access of a non-AMR speech service, this service will be rejected. If the UL load of a cell will not be higher than this threshold, this service will be admitted.





WCDMA RAN




10-37


2. The UL load factor thresholds include parameters of [UL threshold of Conv AMR service], [UL threshold of Conv non_AMR service], [UL handover access threshold] and [UL threshold of other services]. The four parameters can be used to limit the proportion between the conversational service, handover user and other services in a specific cell, and to guarantee the access priority of the conversational non-AMR service.




Unit:%

Default Value:75

UlNonCtrlThdForOther


MOD UCELLCAC


Meaning:1. The percentage of other service thresholds to the 100% uplink load. The services refer to other admissions except the conversational AMR service, conversational non-AMR service, and handover scenarios. The parameter is used for controlling other service admissions. That is, when a service is accessing, the BSC6900 evaluates the measurement value of the uplink load after the service is accessed. If the UL load of a cell is higher





WCDMA RAN




10-38


than this threshold after the access of a service, this service will be rejected. If the UL load of a cell will not be higher than this threshold, this service will be admitted.

2. The UL load factor thresholds include parameters of [UL threshold of Conv AMR service], [UL threshold of Conv non_AMR service], [UL handover access threshold] and [UL threshold of other services]. The four parameters can be used to limit the proportion between the conversational service, handover user and other services in a specific cell, and to guarantee the access priority of other services.




Unit:%

Default Value:60

UlOlcTrigThd BSC6900 ADD UCELLLDM

MOD UCELLLDM

WRFD-020107 Overload Control

Meaning:If the ratio of UL load of the cell to the uplink capacity is not lower than this threshold, the UL overload and congestion control function of the cell is triggered. The value of the OLC release threshold should not be much lower than or close to the OLC trigger threshold, or the system


../RNCParaHtml/mbsc/m-mml/add-ucellldm.html

../RNCParaHtml/mbsc/m-mml/mod-ucellldm.html

WCDMA RAN




10-39


state will have a ping-pong effect easily. The recommended difference between the OLC release threshold and the OLC trigger threshold is higher than 10%. It is desirable to set the two parameters a bit higher given that the difference between OLC trigger threshold and OLC release threshold is fixed.



Unit:%

Default Value:95

UlRRCCeResvSf


MOD UCELLCAC


Meaning:Threshold for RRC admission based on UL credit resources. The value SFOFF indicates that credit resources are not reserved for handover. If the remaining UL resources in a cell are lower than this threshold after a new service is set up, the new service is rejected.

GUI Value Range:SF4(SF4), SF8(SF8), SF16(SF16), SF32(SF32), SF64(SF64), SF128(SF128), SF256(SF256), SFOFF(SFOFF)


Unit:None


UlTotalEqUser BSC6900 ADD UCELLCAC WRFD-020101 Admission Meaning:When the







WCDMA RAN




10-40


Num MOD UCELLCAC Control ENU-based admission algorithm is used for uplink admission control, this parameter defines the total number of equivalent users corresponding to the 100% uplink load. Set this parameter to suit the admission control threshold and the network's actual situation.



Unit:None

Default Value:95


WCDMA RAN

Call Admission Control 11 Counters



11-1

11 Counters

Table 11-1 Counter description

Counter ID Counter Name Counter Description NE Feature ID Feature Name

50332555 VS.LC.ULMean.LicenseGroup

Average number of uplink CEs consumed by an operator

NodeB WRFD-020101 Admission Control

50332556 VS.LC.DLMean.LicenseGroup

Average number of downlink CEs consumed by an operator


50332557 VS.LC.DLCreditAvailable.LicenseGroup.Dedicated

Number of DL CEs configured for an operator


50332558 VS.LC.ULCreditAvailable.LicenseGroup.Dedicated

Number of UL CEs configured for an operator


50332559 VS.LC.ULCreditAvailable.Shared

Number of UL CEs configured for a shared group


50332560 VS.LC.DLCreditAvailable.Shared

Number of DL CEs configured for a shared group


50332561 VS.LC.ULMean.LicenseGroup.Shared

Average number of shared UL CEs consumed by an operator


50332562 VS.LC.DLMean.LicenseGroup.Shared

Average number of shared DL CEs consumed by an operator


50332563 VS.HSUPA.LC.ULMean.LicenseGroup

Average number of uplink CEs consumed by HSUPA services of an operator


50332564 VS.HSUPA.LC.ULMean.LicenseGroup.Shared

Average number of shared uplink CEs consumed by HSUPA services of a shared group


../NodeBCounterHtml/nodeb/b-nodeb-perf/Mt-50332555.html










WCDMA RAN




11-2


50332565 VS.HW.DLCreditAvailable

Number of Available Downlink Hardware CEs


50332566 VS.HW.ULCreditAvailable

Number of Available Uplink Hardware CEs


50332573 VS.CE.ULAvailable.UlGroup

The Number of CEs Configured on All Available Boards in an Uplink Resource Group


50332574 VS.CE.ULMean.UlGroup

Mean Number of Uplink CEs Consumed by All Cells in an Uplink Resource Group


50332578 VS.AttRLSETUP.MEAN The average number of RL Setup Request per second


50332579 VS.AttRLADD.MEAN The average number of RL Add Request per second


50332580 VS.AttRLRecfg.MEAN The average number of RL Reconfiguration Preparation Request per second


50332581 VS.DedicMeaRpt.MEAN

The average number of Dedicated Measurement Reporting per second


50332582 VS.CE.DLAvailable.Board

The Number of Downlink CEs Configured on a Baseband Board


50332583 VS.CE.ULAvailable.Board

The Number of Uplink CEs Configured on a Baseband Boar


50332584 VS.CE.DLMean.Board Mean Number of Downlink CEs Consumed by a Baseband Board













WCDMA RAN




11-3


50332585 VS.RlSetup.Reject.License.Cong

Number of radio link setup rejections because of license congestion in terms of the signaling processing capability


50332586 VS.CE.ULMean.Board Mean Number of Uplink CEs Consumed by a Baseband Board


50332587 VS.RadioLink.Recv.Max Maximum number of received radio links per second


50332588 VS.RadioLink.Handle.Max

Maximum number of wireless connection processing times per second


50332589 VS.RlSetup.Reject.CP.Cong

Number of radio link setup rejections because of control plane congestion


50332590 VS.RadioLink.Recv.Mean

Average number of received radio links per second


50341855 VS.HSUPA.LeftPwrLmtUserRatio

Ratio of the number of HSUPA users with limited uplink load to the total number of HSUPA users in a cell

NodeB WRFD-01061202

WRFD-01061402


Enhanced Fast UL Scheduling

50342555 VS.LC.ULMax.LicenseGroup

Maximum number of uplink CEs consumed by an operator


50342556 VS.LC.DLMax.LicenseGroup

Maximum number of downlink CEs consumed by an operator


50342561 VS.LC.ULMax.LicenseGroup.Shared

Maximum number of shared UL CEs consumed by an












WCDMA RAN




11-4


operator

50342562 VS.LC.DLMax.LicenseGroup.Shared

Maximum number of shared DL CEs consumed by an operator


50342563 VS.HSUPA.LC.ULMax.LicenseGroup

Maximum number of uplink CEs consumed by HSUPA services of an operator


50342564 VS.HSUPA.LC.ULMax.LicenseGroup.Shared

Maximum number of shared uplink CEs consumed by HSUPA services of a shared group


50342567 VS.LC.DLMin.LicenseGroup.Shared

Minimum Number of Shared DL CEs Consumed by an Operator


50342568 VS.LC.ULMin.LicenseGroup.Shared

Minimum Number of Shared UL CEs Consumed by an Operator


50342569 VS.HSUPA.LC.ULMin.LicenseGroup.Shared

Minimum Number of Shared uplink CEs Consumed by HSUPA Services of an Operator


50342570 VS.LC.DLMin.LicenseGroup

Minimum number of downlink CEs consumed by an operator


50342571 VS.LC.ULMin.LicenseGroup

Minimum number of uplink CEs consumed by an operator


50342572 VS.HSUPA.LC.ULMin.LicenseGroup

Minimum number of uplink CEs consumed by HSUPA services of an operator


50342574 VS.CE.ULMin.UlGroup Minimum Number of Uplink CEs Consumed












WCDMA RAN




11-5


by All Cells in an Uplink Resource Group

50342575 VS.CE.ULMax.UlGroup Maximum Number of Uplink CEs Consumed by All Cells in an Uplink Resource Group


50342578 VS.AttRLSETUP.MAX The max number of RL Setup Request per second


50342579 VS.AttRLADD.MAX The max number of RL Add Request per second


50342580 VS.AttRLRecfg.MAX The max number of RL Reconfiguration Preparation Requeset per second


50342581 VS.DedicMeaRpt.MAX The max number of Dedicated Measurement Reporting per second


50342584 VS.CE.DLMin.Board Minimum Number of Downlink CEs Consumed by a Baseband Board


50342585 VS.CE.DLMax.Board Maximum Number of Downlink CEs Consumed by a Baseband Board


50342586 VS.CE.ULMin.Board Minimum Number of Uplink CEs Consumed by a Baseband Board


50342587 VS.CE.ULMax.Board Maximum Number of Uplink CEs Consumed by a Baseband Board


67179524 VS.RRC.Rej.Code.Cong

Number of RRC Connection Rejects for Cell (Code Resource Congestion)

BSC6900

WRFD-020101

WRFD-010510

Admission Control

3.4/6.8/13.6/27.2Kbps RRC Connection and










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WCDMA RAN




11-6


Radio Access Bearer Establishment and Release

67179864 VS.RAB.FailEstabCS.Code.Cong

Number of Failed CS RAB Establishments for Cell (Code Congestion)

BSC6900

WRFD-020101

WRFD-010510

Admission Control

3.4/6.8/13.6/27.2Kbps RRC Connection and Radio Access Bearer Establishment and Release

67179967 VS.RAB.FailEstabPS.Code.Cong

Number of Failed PS RAB Establishments for Cell (Code Congestion)

BSC6900

WRFD-020101

WRFD-010510

Admission Control


67181071 VS.RAC.NewCallReq Number of Cell Resource Requests During RAB Establishment for Cell

BSC6900


67181072 VS.RAC.SHOCallReq Number of Cell Resource Requests During SHO for Cell

BSC6900


67181073 VS.RAC.ReconfigCallReq

Number of Cell Resource Requests Due to UE RAB Reconfiguration for Cell

BSC6900


67181074 VS.RAC.HHOCallReq Number of Cell Resource Requests During HHO for Cell

BSC6900


67181075 VS.RAC.TrChSwitchCallReq

Number of Cell Resource Requests During Channel Type Switch for Cell

BSC6900









WCDMA RAN




11-7


67181076 VS.RAC.NewCallAcc Number of Successful Cell Resource Requests During RAB Establishment for Cell

BSC6900


67181077 VS.RAC.SHOCallAcc Number of Successful Cell Resource Requests During SHO for Cell

BSC6900


67181078 VS.RAC.ReconfigCallAcc

Number of Successful Cell Resource Requests Due to UE RAB Reconfiguration for Cell

BSC6900


67181079 VS.RAC.HHOCallAcc Number of Successful Cell Resource Requests During HHO for Cell

BSC6900


67181080 VS.RAC.TrChSwitchCallAcc

Number of Successful Cell Resource Requests During Channel Type Switch for Cell

BSC6900


67189859 VS.RAC.HHO.Fail.Code.Cong

Number of Failed Requests for Code Resources During HHO for Cell

BSC6900


67190404 VS.RRC.Rej.ULCE.Cong

Number of RRC Connection Rejects for Cell (UL CE Resource Congestion)

BSC6900

WRFD-020101

WRFD-010510

Admission Control


67190405 VS.RRC.Rej.DLCE.Cong

Number of RRC Connection Rejects for Cell (DL CE Resource Congestion)

BSC6900

WRFD-020101

WRFD-010510

Admission Control










WCDMA RAN




11-8


67190406 VS.RAB.FailEstabCS.ULCE.Cong

Number of Failed CS RAB Establishments for Cell (UL CE Congestion)

BSC6900

WRFD-020101

WRFD-010510

Admission Control


67190407 VS.RAB.FailEstabCS.DLCE.Cong

Number of Failed CS RAB Establishments for Cell (DL CE Congestion)

BSC6900

WRFD-020101

WRFD-010510

Admission Control


67190408 VS.RAB.FailEstabPS.ULCE.Cong

Number of Failed PS RAB Establishments for Cell (UL CE Congestion)

BSC6900

WRFD-020101

WRFD-010510

Admission Control


67190409 VS.RAB.FailEstabPS.DLCE.Cong

Number of Failed PS RAB Establishments for Cell (DL CE Congestion)

BSC6900

WRFD-020101

WRFD-010510

Admission Control


67191165 VS.LC.ULCreditUsed.Max

Maximum Usage of UL Credit for Cell

BSC6900


67191166 VS.LC.ULCreditUsed.Min

Minimum Usage of UL Credit for Cell

BSC6900


67191167 VS.LC.DLCreditUsed.M Maximum Usage of DL BSC69 WRFD-020101 Admission








WCDMA RAN




11-9


ax Credit for Cell 00 Control

67191168 VS.LC.DLCreditUsed.Min

Minimum Usage of DL Credit for Cell

BSC6900


67191839 VS.RAC.DCCC.Fail.ULCE.Cong

Number of Failed Requests for UL CE Resources During DCCC for Cell

BSC6900


67191840 VS.RAC.DCCC.Fail.DLCE.Cong

Number of Failed Requests for DL CE Resources During DCCC for Cell

BSC6900


67191841 VS.RAC.SHO.Fail.ULCE.Cong

Number of Failed Requests for UL CE Resources During SHO for Cell

BSC6900


67191842 VS.RAC.SHO.Fail.DLCE.Cong

Number of Failed Requests for DL CE Resources During SHO for Cell

BSC6900


67191843 VS.RAC.NewCallReq.Fail.ULCE.Cong

Number of Failed Requests for Uplink CE Resources During RAB Establishment for Cell

BSC6900


67191844 VS.RAC.NewCallReq.Fail.DLCE.Cong

Number of Failed Requests for Downlink CE Resources During RAB Establishment for Cell

BSC6900


67192492 VS.RAC.HHO.Fail.ULCE.Cong

Number of Failed Requests for UL CE Resources During HHO for Cell

BSC6900


67192493 VS.RAC.HHO.Fail.DLCE.Cong

Number of Failed Requests for DL CE Resources During HHO for Cell

BSC6900


67192608 VS.RRC.Rej.ULIUBBand.Cong

Number of RRC Connection Rejects for Cell (UL Iub Bandwidth

BSC6900

WRFD-020101

WRFD-010510

Admission Control

3.4/6.8/13.6/27.2











WCDMA RAN




11-10


Congestion) Kbps RRC Connection and Radio Access Bearer Establishment and Release

67192609 VS.RRC.Rej.DLIUBBand.Cong

Number of RRC Connection Rejects for Cell (DL Iub Bandwidth Congestion)

BSC6900

WRFD-020101

WRFD-010510

Admission Control


67192610 VS.RAB.FailEstabCS.DLIUBBand.Cong

Number of Failed CS RAB Establishments for Cell (DL Iub Bandwidth Congestion)

BSC6900

WRFD-020101

WRFD-010510

Admission Control


67192611 VS.RAB.FailEstabCS.ULIUBBand.Cong

Number of Failed CS RAB Establishments for Cell (UL Iub Bandwidth Congestion)

BSC6900

WRFD-020101

WRFD-010510

Admission Control


67192612 VS.RAB.FailEstabPS.DLIUBBand.Cong

Number of Failed PS RAB Establishments for Cell (DL Iub Bandwidth Congestion)

BSC6900

WRFD-020101

WRFD-010510

Admission Control


67192613 VS.RAB.FailEstabPS.U Number of Failed PS RAB Establishments for

BSC69 WRFD-020101 Admission






WCDMA RAN




11-11


LIUBBand.Cong Cell (UL Iub Bandwidth Congestion)

00 WRFD-010510 Control


67192916 VS.RAC.NewCallReq.Fail.HSDPANum.Cong

Number of Failed Admissions Due to HSDPA User Number Exceeding Threshold During RAB Establishment for Cell

BSC6900

WRFD-01061003


67192917 VS.RAC.NewCallReq.Fail.HSUPANum.Cong

Number of Failed Admissions Due to HSUPA User Number Exceeding Threshold During RAB Establishment for Cell

BSC6900

WRFD-01061202


67192918 VS.RAC.SHO.Fail.Code.Cong

Number of Failed Requests for Code Resources During SHO for Cell

BSC6900


67192919 VS.RAC.SHO.Fail.ULIUBBand.Cong

Number of Failed Requests for UL Iub Transmission Resources During SHO for Cell

BSC6900


67192920 VS.RAC.SHO.Fail.DLIUBBand.Cong

Number of Failed Requests for DL Iub Transmission Resources During SHO for Cell

BSC6900


67192921 VS.RAC.SHO.Fail.HSUPANum.Cong

Number of Failed Admissions Due to HSUPA User Number Exceeding Threshold During SHO for Cell

BSC6900

WRFD-01061202


67192922 VS.RAC.DCCC.Fail.Code.Cong

Number of Failed Requests for DL Code Resources During

BSC6900









WCDMA RAN




11-12


DCCC for Cell

67192923 VS.RAC.TrChSwitch.Fail.ULCE.Cong

Number of Failed Requests for UL CE Resources During Channel Type Switch for Cell

BSC6900


67192924 VS.RAC.TrChSwitch.Fail.DLCE.Cong

Number of Failed Requests for DL CE Resources During Channel Type Switch for Cell

BSC6900


67192925 VS.RAC.TrChSwitch.Fail.Code.Cong

Number of Failed Requests for Code Resources During Channel Type Switch for Cell

BSC6900


67192926 VS.RAC.TrChSwitch.Fail.ULIUBBand.Cong

Number of Failed Requests for UL Iub Transmission Resources During Channel Type Switch for Cell

BSC6900


67192927 VS.RAC.TrChSwitch.Fail.DLIUBBand.Cong

Number of Failed Requests for DL Iub Transmission Resources During Channel Type Switch for Cell

BSC6900


67192928 VS.RAC.TrChSwitch.Fail.HSDPANum.Cong

Number of Failed Admissions Due to HSDPA User Number Exceeding Threshold During Channel Type Switch for Cell

BSC6900

WRFD-01061003


67192929 VS.RAC.TrChSwitch.Fail.HSUPANum.Cong

Number of Failed Admissions Due to HSUPA User Number Exceeding Threshold During Channel Type Switch for Cell

BSC6900

WRFD-01061202


67192930 VS.RAC.HHO.Fail.ULIUBBand.Cong

Number of Failed Requests for UL Iub

BSC6900










WCDMA RAN




11-13


Transmission Resources During HHO for Cell

67192931 VS.RAC.HHO.Fail.DLIUBBand.Cong

Number of Failed Requests for DL Iub Transmission Resources During HHO for Cell

BSC6900


67192932 VS.RAC.HHO.Fail.HSDPANum.Cong

Number of Failed Admissions Due to HSDPA User Number Exceeding Threshold During HHO for Cell

BSC6900

WRFD-01061003


67192933 VS.RAC.HHO.Fail.HSUPANum.Cong

Number of Failed Admissions Due to HSUPA User Number Exceeding Threshold During HHO for Cell

BSC6900

WRFD-01061202


67192939 VS.RAC.SHO.Fail.ULPower.Cong

Number of Failed Requests for UL Power Resources During SHO for Cell

BSC6900


67192940 VS.RAC.SHO.Fail.DLPower.Cong

Number of Failed Requests for DL Power Resources During SHO for Cell

BSC6900


67192941 VS.RAC.HHO.Fail.ULPower.Cong

Number of Failed Requests for UL Power Resources During HHO for Cell

BSC6900


67192942 VS.RAC.HHO.Fail.DLPower.Cong

Number of Failed Requests for DL Power Resources During HHO for Cell

BSC6900


67192943 VS.RAC.DCCC.Fail.ULPower.Cong

Number of Failed Requests for UL Power Resources During DCCC for Cell

BSC6900


67192944 VS.RAC.DCCC.Fail.DLPower.Cong

Number of Failed Requests for DL Power Resources During

BSC6900











WCDMA RAN




11-14


DCCC for Cell

67192945 VS.RAC.TrChSwitch.Fail.ULPower.Cong

Number of Failed Requests for UL Power Resources During Channel Type Switch for Cell

BSC6900


67192946 VS.RAC.TrChSwitch.Fail.DLPower.Cong

Number of Failed Requests for DL Power Resources During Channel Type Switch for Cell

BSC6900


67193609 VS.RRC.Rej.ULPower.Cong

Number of RRC Connection Rejects for Cell (UL Power Congestion)

BSC6900

WRFD-020101

WRFD-010510

Admission Control


67193610 VS.RRC.Rej.DLPower.Cong

Number of RRC Connection Rejects for Cell (DL Power Congestion)

BSC6900

WRFD-020101

WRFD-010510

Admission Control


67193611 VS.RAB.FailEstabCS.ULPower.Cong

Number of Failed CS RAB Establishments for Cell (UL Power Congestion)

BSC6900

WRFD-020101

WRFD-010510

Admission Control


67193612 VS.RAB.FailEstabCS.DLPower.Cong

Number of Failed CS RAB Establishments for Cell (DL Power Congestion)

BSC6900

WRFD-020101

WRFD-010510

Admission Control

3.4/6.8/13.6/27.2Kbps RRC







WCDMA RAN




11-15


Connection and Radio Access Bearer Establishment and Release

67193613 VS.RAB.FailEstabPS.ULPower.Cong

Number of Failed PS RAB Establishments for Cell (UL Power Congestion)

BSC6900

WRFD-020101

WRFD-010510

Admission Control


67193614 VS.RAB.FailEstabPS.DLPower.Cong

Number of Failed PS RAB Establishments for Cell (DL Power Congestion)

BSC6900

WRFD-020101

WRFD-010510

Admission Control


67199663 VS.RAC.UL.EqvUserNum

Mean Number of UL Equivalent Voice UEs in CEL_DCH State for Cell

BSC6900


67199664 VS.RAC.DL.EqvUserNum

Mean Number of DL Equivalent Voice UEs in CEL_DCH State for Cell

BSC6900


67202567 VS.LC.ULCreditUsed.Mean

Mean Usage of UL Credit for Cell

BSC6900


67202570 VS.LC.DLCreditUsed.Mean

Mean Usage of DL Credit for Cell

BSC6900


67202921 VS.CPICH.MeanPwr Average CPICH Power for Cell

BSC6900


73393830 VS.HSDPA.RAB.FailEstab.DLPower.Cong

Number of Failed HSDPA Service Establishments Due to DL Power Insufficiency for Cell

BSC6900

WRFD-01061003










WCDMA RAN




11-16


73393831 VS.HSDPA.RAB.FailEstab.DLIUBBand.Cong

Number of Failed HSDPA Service Establishments Due to DL Iub Bandwidth Insufficiency for Cell

BSC6900

WRFD-01061003


73393961 VS.RAC.NewCallReq.Fail.ULPower.Cong

Number of Failed Requests for Uplink Power Resources in the RAB Setup Procedure for Cell

BSC6900


73393962 VS.RAC.NewCallReq.Fail.DLPower.Cong

Number of Failed Requests for Downlink Power Resources in the RAB Setup Procedure for Cell

BSC6900


73393963 VS.RAC.NewCallReq.Fail.Code.Cong

Number of Failed Requests for Code Resources in the RAB Setup Procedure for Cell

BSC6900


73393964 VS.RAC.NewCallReq.Fail.ULIUBBand.Cong

Number of Failed Requests for Uplink Iub Bandwidth Resources in the RAB Setup Procedure for Cell

BSC6900


73393965 VS.RAC.NewCallReq.Fail.DLIUBBand.Cong

Number of Failed Requests for Downlink Iub Bandwidth Resources in the RAB Setup Procedure for Cell

BSC6900


73403761 VS.HSUPA.UE.Max.Cell

Maximum Number of HSUPA UEs in a Cell

BSC6900

WRFD-01061202

WRFD-020101


Admission Control

73403763 VS.HSDPA.UE.Max.Cell

Maximum Number of HSDPA UEs in a Cell

BSC6900

WRFD-01061003

WRFD-020101


Admission Control









WCDMA RAN




11-17


73423469 VS.HSDPA.UE.Max.Cell.Free

Maximum Number of Free HSDPA Users in a Cell

BSC6900

WRFD-01061003


73423955 VS.RAC.TrChSwitch.Fail.DCCH.Cong.F2D

Counters Related to the Failed Number of F2D Process Triggered by DCCH Congestion

BSC6900


73423956 VS.RAC.TrChSwitch.Fail.DCCH.Cong.D2F

Counters Related to the Failed Number of D2F Process Triggered by DCCH Congestion

BSC6900


73423957 VS.RAC.TrChSwitch.Fail.DSP.Overload.D2F

Counters Related to the Failed Number of D2F Process Triggered by DSP Overload

BSC6900


73441142 VS.HSDPA.UE.Mean.Cell.Free

Average Number of Free HSDPA Users in a Cell

BSC6900

WRFD-01061003







WCDMA RAN

Call Admission Control 12 Glossary



12-1

12 Glossary

For the acronyms, abbreviations, terms, and definitions, see the Glossary.

Glossary.htm

WCDMA RAN

Call Admission Control 13 Reference Documents



13-1

13 Reference Documents

[1] Load Control Feature Parameter Description

[2] HSDPA Feature Parameter Description

[3] Directed Retry Decision Feature Parameter Description

[4] Transmission Resource Management Feature Parameter Description

[5] Radio Bearers Feature Parameter Description

[6] MBMS Feature Parameter Description

[7] License Management Feature Parameter Description

[8] CE Resource Management Feature Parameter Description

Load%20Control.htm

HSDPA.htm



Radio%20Bearers.htm

MBMS.htm



Call Admission Control(RAN14.0_04)

Documents

Transcript of Call Admission Control(RAN14.0_04)