Voice Service Experience Improvement for Weak Reception UEs(RAN15.0_01)

8/19/2019 Voice Service Experience Improvement for Weak Reception UEs(RAN15.0_01)

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WCDMA RAN

Voice Service Experience

Improvement for Weak Reception

UEs Feature Parameter Description

Issue 01

Date 2013-04-28

HUAWEI TECHNOLOGIES CO., LTD.


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Copyright © Huawei Technologies Co., Ltd. 2015. All rights reserved.

No part of this document may be reproduced or transmitted in any form or by any means without prior written

consent of Huawei Technologies Co., Ltd.

Trademarks and Permissions

and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.

All other trademarks and trade names mentioned in this document are the property of their respective holders.

Notice

The purchased products, services and features are stipulated by the contract made between Huawei and the

customer. All or part of the products, services and features described in this document may not be within the

purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information,

and recommendations in this document are provided "AS IS" without warranties, guarantees or representations

of any kind, either express or implied.

The information in this document is subject to change without notice. Every effort has been made in the

preparation of this document to ensure accuracy of the contents, but all statements, information, and

recommendations in this document do not constitute a warranty of any kind, express or implied.

Huawei Technologies Co., Ltd.

Address: Huawei Industrial Base

Bantian, Longgang

Shenzhen 518129

People's Republic of China

Website: http://www.huawei.com

Email: [email protected]

Issue 01 (2013-04-28) Huawei Proprietary and Confidential

Copyright © Huawei Technologies Co., Ltd.

i

http://www.huawei.com/


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Contents

1 About This Document..................................................................................................................1

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

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

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

1.4 Differences Between Base Station Types.......................................................................................................................2

2 Overview.........................................................................................................................................3

3 Technical Description...................................................................................................................4

3.1 Overview........................................................................................................................................................................4

3.2 Weak Reception UE Identification.................................................................................................................................5

3.2.1 Obtaining the IMEI......................................................................................................................................................5

3.2.2 Identifying Weak Reception UEs................................................................................................................................6

3.3 Differentiated Handling..................................................................................................................................................6

4 Related Features.............................................................................................................................8

5 Impact on the Network.................................................................................................................9

6 Engineering Guidelines.............................................................................................................11

6.1 When to Use Voice Service Experience Improvement for Weak Reception UEs.......................................................11

6.2 Information to Be Collected.........................................................................................................................................11

6.3 Feature Deployment.....................................................................................................................................................11

6.3.1 Requirements.............................................................................................................................................................12

6.3.2 Activation..................................................................................................................................................................12

6.3.3 Activation Observation..............................................................................................................................................16

6.3.4 Deactivation...............................................................................................................................................................18

6.4 Performance Monitoring...............................................................................................................................................19

7 Parameters.....................................................................................................................................21

8 Counters........................................................................................................................................70

9 Glossary.........................................................................................................................................71

10 Reference Documents...............................................................................................................72

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Voice Service Experience Improvement for Weak Reception

UEs Feature Parameter Description Contents



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1 About This Document

1.1 Scope

This document describes WRFD-140205 Voice Service Experience Improvement for Weak

Reception UEs, including its technical principles, related features, network impact, and

engineering guidelines.

This document applies to the following NE types.

NE Type NE Model

RNC BSC6900, BSC6910

NodeB Macro 3900 series macro base stations: BTS3900, BTS3900A,

BTS3900L, BTS3900AL, DBS3900, BTS3900C

3800 series macro base stations: DBS3800, BTS3812E,

BTS3812AE

Micro BTS3803E, BTS3902E

LampSite DBS3900 LampSite

1.2 Intended Audience

This document is intended for personnel who:

l Need to understand the features described herein

l 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:

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l Feature change

Changes in features of a specific product version

l Editorial change

Changes in wording or addition of information that was not described in the earlier version

RAN15.0 01 (2013-04-28)

This is the first commercial release of RAN15.0.

Compared with Issue 02 (2012-07-20) of RAN14.0, 01 (2013-04-28) of RAN15.0 includes the

following changes.

ChangeType

Change Description Parameter Change

Feature

change

None None

Editorial

change

Modified the description of the CME-based

configuration. For details, see chapter 6

Engineering Guidelines.

None

1.4 Differences Between Base Station Types

Feature Support by Macro, Micro, and LampSite Base StationsFeature

ID

Descripti

on

Supported by

Controller(Y/N/NA)

Supporte

d by

Macro

(Y/N/

NA)

Supported by Micro

(Y/N/NA)

LampSit

e

BSC690

0

BSC691

0

BTS380

3E

BTS390

2E

WRFD-

140205

Voice

Experien

ce

Improve

ment for Weak

Receptio

n UEs

Y Y Y Y Y Y

NOTE

Y indicates that a feature is supported; N indicates that a feature is not supported; NA indicates that an NE is

not involved, that is, a feature does not require the support of the NE.

The features described in this document are implemented in the same way on macro, micro, and

LampSite base stations.

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2 OverviewOn a live UMTS network, some phone models underperform when compared with other vendor

phones in the same radio environment due to the following reasons:

l Poor signal reception leads to downlink signaling radio bearer (SRB) failures.

l The special antenna design leads to deteriorated signal reception while a user is holding

the unit.

Therefore, these phone models are more prone to call drops. However, these phone models are

generally used by high Average Revenue Per User (APRU) users. To preferentially improve

their user experience, Huawei introduces the Voice Service Experience Improvement for Weak

Reception UEs feature.

This feature enables the radio network controller (RNC) to identify weak reception UEs based

on the International Mobile Station Equipment Identity (IMEI) and to configure dedicated power

control and handover parameters for them. Based on the parameter settings, weak reception UEs

obtain a high downlink power control threshold in weak coverage areas and perform handovers

at the designated threshold. This prevents frequent compressed mode measurements and call

drops caused by signal quality fluctuations.

This feature improves the user experience of CS voice services for weak reception UEs by

compensating for poor signal reception with increased downlink power. However, in extreme

cases, this increases power consumption and reduces cell capacity.

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3 Technical Description

3.1 Overview

For CS voice services, Voice Service Experience Improvement for Weak Reception UEs enables

the RNC to perform a new International Mobile Station Equipment Identity (IMEI) acquisition

procedure. During this procedure, the RNC detects the IMEI Type Allocation Code (TAC) and

determines the UE type. If the UE is a weak reception UE, the RNC configures dedicated power

control and handover parameters for the UE. Based on the parameter settings, the weak reception

UE obtains a high downlink power control threshold in weak coverage areas and performs

handovers at the designated threshold.

TAC

The TAC, which is allocated by the Globe System for Mobile Association (GSMA) and its

authorized organizations, differentiates cell phone brands and types. As defined in 3GPP TS

23.003, the TAC is the first 8 digits of the 15-digit IMEI, which uniquely identifies a wireless

device. For example, if the IMEI of a weak reception UE is 012426007285409, the TAC is

01242600. Figure 3-1 shows the IMEI composition.

Figure 3-1 IMEI composition

Implementation Procedure

Implementing this feature involves two major procedures:

1. Weak reception UE identification: Upon receiving a CS service setup request from a UE,

the RNC identifies the UE type based on the IMEI TAC.

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2. Differentiated handling: The RNC assigns the weak reception UE dedicated radio

performance parameters for differentiated power control and handovers.

This feature can be enabled by selecting Special_User_Enhance under TAC_FUNC

(BSC6900,BSC6910).

3.2 Weak Reception UE Identification

The RNC first obtains the IMEI of a UE and then uses the IMEI TAC to determine whether the

UE is a weak reception UE.

3.2.1 Obtaining the IMEI

UE identification is based on the IMEI, which is obtained by the CN or RNC. If the IMEI

acquisition function is enabled on the CN, the CN obtains the IMEI. If the IMEI acquisition

function is disabled on the CN, the RNC obtains the IMEI.

l IMEI obtained by the CN: When a UE initiates a CS service setup request, the CN sends

an Identity Request message to the UE to request its IMEI. Then, the RNC extracts the

IMEI contained in the Identity Response message sent from UE to the CN.

l IMEI obtained by the RNC: When a UE initiates a CS service setup request, the RNC rather

than the CN sends an Identity Request message to the UE to request its IMEI after the

security mode procedure has been successfully performed.

The RNC_CS_QUERY_UE_IMEI_SWITCH switch under PROCESSSWITCH2

(BSC6900,BSC6910) specifies whether to enable the RNC to obtain the IMEI.

NOTE

When exchanging messages with a UE, the CN may check the send sequence number for the messages,which is denoted as N(SD). If the RNC rather than the CN sends an Identity Request message to the UE,

the check may fail due to send sequence number inconsistency between the UE and the CN. To avoid data

inconsistency, the RNC sends an MM NULL message to the CN upon receiving an Identity Response

message from the UE. If the CN does not check the send sequence number for messages, the RNC does

not send an MM NULL message to the CN.

The SEND_MSG_NULL_SWITCH switch under PROCESSSWITCH4

(BSC6900,BSC6910) specifies whether to enable the RNC to send the MM NULL message.

For details about the send sequence number, see 3GPP TS 24.008 and 3GPP TS 24.007.

Figure 3-2 describes how the RNC obtains the IMEI.

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Figure 3-2 How the RNC obtains the IMEI

3.2.2 Identifying Weak Reception UEs

After obtaining the IMEI of a UE, the RNC extracts the TAC from the IMEI and checks whether

the TAC is contained in the TAC list. The list is configured by running the ADD UIMEITAC

command.

l If the TAC is contained in the TAC list, the RNC determines that the UE is a weak reception

UE and performs subsequent differentiated handling procedures.

l If the TAC is not contained in the TAC list, the RNC determines that the UE is not a weak

reception UE and does not perform differentiated handling procedures.

3.3 Differentiated Handling

After identifying a UE as a weak reception UE, the RNC performs differentiated handling

procedures, containing differentiated power control and handovers.

Differentiated Power Control

When SPECUSER_AMR_PWRENHANCE_SWITCH is selected under

SpecUserFunctionSwitch(BSC6900,BSC6910) , the RNC performs differentiated power

control on a weak reception UE.

During differentiated power control, the RNC configures dedicated maximum radio link (RL)

downlink (DL) transmit power for weak reception UEs. These parameters ensure that weak

reception UEs obtain higher RL DL transmit power when CS signal quality is unfavorable.

Increasing the maximum RL DL transmit power affects the cell capacity. Therefore, when the

RNC receives a CS voice service setup request from a weak reception UE, the RNC decides

whether to configure the maximum RL DL transmit power for the weak reception UE based on

the DL Transmitted Carrier Power (TCP) in the cell.

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l If the TCP in the cell is smaller than or equal to the value of SpecUserPwrEnDlPwrTrigThd

(BSC6900,BSC6910), the RNC configures a high maximum RL DL transmit power based

on the SpecUserRlMaxDlPwr(BSC6900,BSC6910) setting.

l If the TCP in the cell is greater than the value of SpecUserPwrEnDlPwrTrigThd

(BSC6900,BSC6910), the RNC configures a normal maximum RL DL transmit power based on the RLMaxDlPwr(BSC6900,BSC6910) setting.

NOTE

Differentiated power control applies only to CS voice services carried over DCH. SpecUserRlMaxDlPwr

(BSC6900,BSC6910) takes effect only on 12.2 kbit/s adaptive multi-rate (AMR) services carried on DCHs.

For CS services at other rates or PS services carried on DCHs, the maximum RL DL transmit power is still

specified by RLMaxDlPwr .

Differentiated Handovers

When SPECUSER_AMR_HOENHANCE_SWITCH is selected

under SpecUserFunctionSwitch(BSC6900,BSC6910) , the RNC performs a differentiatedhandover on a weak reception UE.

Weak reception UEs in the same radio environment can experience great fluctuations in signal

quality. This results in event 2D or 2F being reported frequently and also results in compressed

mode measurement, which may cause call drops.

To address this issue, the RNC configures the following dedicated parameters for weak reception

UEs to increase the difference between the thresholds for events 2D and 2F:

l SpecUserHystFor2D(BSC6900,BSC6910)

l SpecUserCSThd2DEcN0(BSC6900,BSC6910)

l SpecUserCSThd2FEcN0(BSC6900,BSC6910)l SpecUserCSThd2DRSCP(BSC6900,BSC6910)

l SpecUserCSThd2FRSCP(BSC6900,BSC6910)

NOTE

Events 2D and 2F are used to enable and disable the compressed mode, respectively . Event 2D indicates

that signal quality in the current cell is below a specified threshold. Event 2F indicates that signal quality

in the current cell is above a specified threshold. For details about how to set the parameters related to

events 2D and 2F, see the Handover Feature Parameter Description.

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4 Related FeaturesThis feature does not depend on any other features and can be used with any other features.

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5 Impact on the NetworkSystem Capacity

The RNC configures a high RL DL transmit power for weak reception UEs, which increases the

transmit power in the cell. When a cell has fixed DL transmit power, this feature imposes impacts

on cell capacity and HSDPA throughput. This section describes the impacts based on the

following simulations conducted by Huawei:

l There is one HSDPA cell.

l Two HSDPA UEs of category 10 are processing downlink services at the center of the cell,

and the channel quality indicator (CQI) is around 30.

l UEs processing adaptive multi-rate (AMR) services are located at the cell edge (the Ec/N0

is –16 dB). The maximum RL DL transmit power remains unchanged (the same as thatconfigured for ordinary UEs) or increases by 3 dB (3 dB higher than that configured for

ordinary UEs).

Table 5-1 lists the simulation results.

Table 5-1 Impact of this feature on cell capacity and HSDPA throughput based on Huawei

simulations

Number ofUEsProcessing

AMR Servicesat the CellEdge

HSDPAThroughput(kbit/s)

HSDPAThroughputAfter a 3-dB

Increase in theMaximum RLDL TransmitPower for UEsProcessing AMR Services(kbit/s)

Cell CapacityReductionPercentage

After theIncrease

ThroughputReductionPercentage

After theIncrease

1 9062.0 9048.8 0.23% 0.15%

2 8926.2 8867.9 1.83% 0.65%

4 8701.1 8570.3 3.62% 1.50%

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Number ofUEsProcessing AMR Services

at the CellEdge

HSDPAThroughput(kbit/s)

HSDPAThroughputAfter a 3-dBIncrease in the

Maximum RLDL TransmitPower for UEsProcessing AMR Services(kbit/s)

Cell CapacityReductionPercentageAfter the

Increase

ThroughputReductionPercentageAfter the

Increase

8 8107.1 7737.0 12.10% 4.57%

The simulation results show that this feature has a small impact on cell capacity and throughput.

Network Performance

This feature reduces the call drop rate of weak reception UEs and improves user experience of

CS voice services.

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6 Engineering Guidelines

6.1 When to Use Voice Service Experience Improvement for Weak Reception UEs

Before deploying Voice Service Experience Improvement for Weak Reception UEs, analyze

the network coverage and the causes of high call drop rate of weak reception UEs. This feature

is recommended when a UMTS network meets all of the following conditions:

l The weak reception UE's penetration rate is above 10%.

l The call drop rate of weak reception UEs is above average.

l The call drops are closely related to poor UMTS network coverage.

In areas not covered by a GSM network or in areas with poor coverage, only differentiated power

control is recommended for this feature.

Currently, this feature applies only to iPhone 4 and iPhone 3GS.

6.2 Information to Be Collected

Before deploying this feature, the TAC information for weak reception UEs must be collected.

In addition, check whether the IMEI acquisition function is enabled on the CN. If not, this

function must be enabled on the RNC.

If this function needs to be enabled on the RNC, determine whether the CN checks the send

sequence number for messages. If the CN checks the send sequence number for messages, turn

on the switch for sending the MM NULL message on the RNC.

6.3 Feature Deployment

This section describes how to activate, verify, and deactivate the optional feature WRFD-140205

Voice Service Experience Improvement for Weak Reception UEs.

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6.3.1 Requirements

l Dependencies on Hardware

This feature does not have any special requirements for hardware.

l Dependencies on Other Features

This feature does not depend on other features.

l License

For details about how to activate the license, see License Management Feature Parameter

Description.

Feature ID FeatureName

LicenseControlItem ID

LicenseControlItem

SupportedNE Type

LicenseAllocationforMultiple

OperatorsWRFD-140

205

Voice

Service

Experience

Improveme

nt for Weak

Reception

Ues

LQW1IVEI

01RES

Voice

Service

Experience

Improveme

nt for Weak

Reception

Ues (per

Erl)

BSC6900

BSC6910

Method 1

If RAN Sharing or MOCN is enabled, the licensed value is allocated among the primary

and secondary operators according to the value of the "License Allocation for Multiple

Operators parameter".

Method 1: It is recommended that the license allocation proportion of a feature be consistent

with that of the license item "Voice Erlang-Erlang". The licensed values can be set by

running the SET LICENSE command.

6.3.2 Activation

Using MML Commands1. Enable the CS international mobile equipment identity (IMEI) acquisition function on the

RNC.

Run the RNC MML command SET URRCTRLSWITCH. In this step, select the

RNC_CS_QUERY_UE_IMEI_SWITCH check box under the parameter Process

Control Switch 2.

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NOTE

l If CS IMEI acquisition has been enabled on the CN, skip this step.

l Before enabling CS IMEI acquisition, ensure that the CN checks the serial number of direct

transfer messages. Run the RNC MML command SET URRCTRLSWITCH. In this step, turn

on the SEND_MSG_NULL_SWITCH switch.

l After enabling CS IMEI acquisition, check for the compatibility issue between the RNC and the

CN. When there is a compatibility issue, enabling CS IMEI acquisition results in CS service setup

failures.

2. Enable differentiated power control and differentiated handover for smartphones, and

configure the Type Allocation Code (TAC) of the smartphone.

Run the RNC MML command ADD UIMEITAC. In this step, set The function of the

TAC to Special_User_Enhance, and select the

SPECUSER_AMR_HOENHANCE_SWITCH and

SPECUSER_AMR_PWRENHANCE_SWITCH check boxes under the parameter

Special User Function Switch.

3. Set the parameters related to differentiated power control and handover for smartphones

based on the network plan.

a. Run the RNC MML command ADD UCELLLDM to set the parameters related to

cell load monitoring. In this step, set DL Pwr Cong Thres for Spec User Enhance

to an appropriate value based on the network plan.

b. Run the RNC MML command MOD UCELLRLPWR to set the parameters related

to the radio link (RL) transmit power in the cell. In this step, set CN domain ID to

CS_DOMAIN, and set Max bit rate of service, RL Max DL TX power, and Max

DL RL Power For Spec User to appropriate values based on the network plan.

c. Run the RNC MML command SET UHOCOMM to set the RNC-level parameters

related to differentiated handover for smartphones. In this step, set Delay in Reporting2D for Special UEs, Ec/N0 Threshold for Reporting 2D, Ec/N0 Threshold for

Reporting 2F, RSCP Threshold for Reporting 2D, and RSCP Threshold for

Reporting 2F to appropriate values based on the network plan.

d. Optional: Run the RNC MML command ADD UCELLHOCOMM to set the cell-

level parameters related to differentiated handover for smartphones. In this step, set

Delay in Reporting 2D for Special UEs, Ec/N0 Threshold for Reporting 2D, Ec/

N0 Threshold for Reporting 2F, RSCP Threshold for Reporting 2D, and RSCP

Threshold for Reporting 2F to appropriate values based on the network plan.

NOTE

To enable this feature in a specified cell, run the ADD UCELLHOCOMM command to set thedifferentiated handover parameters for the cell.

4. Optional: When RAN Sharing or MOCN is enabled, run the RNC MML command SET

LICENSE to set the Voice Service Experience Improvement for Weak Reception UEs

parameter for the primary and secondary operators.

MML Command Examples//Activating Voice Service Experience Improvement for Weak Reception UEs

//Enabling CS IMEI acquisition

SET URRCTRLSWITCH: PROCESSSWITCH2=RNC_CS_QUERY_UE_IMEI_SWITCH-1;

//Send MM NULL message switch(optional)

SET URRCTRLSWITCH: PROCESSSWITCH4=SEND_MSG_NULL_SWITCH-1;

//Enabling differentiated power control and differentiated handover for smartphonesand setting the TAC of the smartphone

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ADD UIMEITAC: TAC_FUNC=Special_User_Enhance, TAC=12345, Description="Smart Phone",

SpecUserFunctionSwitch=SPECUSER_AMR_HOENHANCE_SWITCH-1&SPECUSER_AMR_PWRENHANCE_SWI

TCH-1;

//Setting the parameters related to cell load monitoring

ADD UCELLLDM: CellId=1, SpecUserPwrEnDlPwrTrigThd =80;

//Setting the parameters related to RL transmit power in the cell

MOD UCELLRLPWR: CellId=1, CNDomainId=CS_DOMAIN, MaxBitRate=12200, RlMaxDlPwr=0,SpecUserRlMaxDlPwr =30;

//Setting the RNC-level parameters related to differentiated handover for

smartphones

SET UHOCOMM: SpecUserHystFor2D=6, SpecUserCSThd2DEcN0=-13,

SpecUserCSThd2FEcN0=-10, SpecUserCSThd2DRSCP=-93, SpecUserCSThd2FRSCP=-90;

//Setting the cell-level parameters related to differentiated handover for

smartphones

ADD UCELLHOCOMM: CellId=1, SpecUserHystFor2D =6, SpecUserCSThd2DEcN0=-13,

SpecUserCSThd2FEcN0=-10, SpecUserCSThd2DRSCP =-93, SpecUserCSThd2FRSCP=-90;

Using the CME

NOTE

When configuring the UL CoMP feature on the CME, perform a single configuration first, and then perform a

batch modification if required. Configure the parameters of a single object before a batch modification. Perform

a batch modification before logging out of the parameter setting interface.

1. Configure a single object (such as a cell) on the CME.

Set parameters on the CME according to the operation sequence described in Table 6-1.

For instructions on how to perform the CME single configuration, see CME Single

Configuration Operation Guide.

2. (Optional) Modify objects in batches on the CME. (CME batch modification center)

To modify objects in batches, click on the CME to start the batch modification wizard.

For instructions on how to perform a batch modification through the CME batchmodification center, press F1 on the wizard interface to obtain online help.

Table 6-1 Parameters to be set on the CME

SN MO NE ParameterName

ParameterID

Configurable in CMEBatchModification Center

1 URRCTRL

SWITCH

RNC Process

Control

Switch 2

PROCESSS

WITCH2

(BSC6900,

BSC6910)

YES

2 UIMEITAC RNC The function

of the TAC

TAC_FUNC

(BSC6900,

BSC6910)

NO

Special User

Function

Switch

SpecUserFu

nctionSwitc

h

(BSC6900,

BSC6910)

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ParameterID

Configurable in CMEBatchModificati

on Center

3 UCELLLD

M

RNC DL Pwr

Cong Thres

for Spec

User

Enhance

SpecUserP-

wrEnDlPwr

TrigThd

(BSC6900,

BSC6910)

YES

UCELLRL

PWR

RNC CN domain

ID

CNDomainI

d

(BSC6900,

BSC6910)

YES

Max bit rate

of service

MaxBitRate

(BSC6900,

BSC6910)

RL Max DL

TX power

RlMaxDlPw

r

(BSC6900,

BSC6910)

RL Min DL

TX power

RlMinDlPw

r

(BSC6900,

BSC6910)

UHOCOM

M

RNC Delay in

Reporting

2D for

Special UEs

SpecUserHy

stFor2D

(BSC6900,

BSC6910)

YES

Ec/N0

Threshold

for

Reporting

2D

SpecUserCS

Thd2DEcN0

(BSC6900,

BSC6910)

Ec/N0

Threshold

for

Reporting 2F

SpecUserCS

Thd2FEcN0

(BSC6900,

BSC6910)

RSCP

Threshold

for

Reporting

2D

SpecUserCS

Thd2DRSC

P

(BSC6900,

BSC6910)

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ParameterID

Configurable in CMEBatchModificati

on Center

RSCP

Threshold

for

Reporting

2D

SpecUserCS

Thd2FRSC

P

(BSC6900,

BSC6910)

4 (Optional) UCELLHO

COMM

RNC Delay in

Reporting

2D for

Special UEs

SpecUserHy

stFor2D

(BSC6900,

BSC6910)

YES

Ec/N0

Threshold

for

Reporting

2D

SpecUserCS

Thd2DEcN0

(BSC6900,

BSC6910)

Ec/N0

Threshold

for

Reporting 2F

SpecUserCS

Thd2FEcN0

(BSC6900,

BSC6910)

RSCP

Threshold

for

Reporting

2D

SpecUserCS

Thd2DRSC

P

(BSC6900,

BSC6910)

RSCP

Threshold

for

Reporting 2F

SpecUserCS

Thd2FRSC

P

(BSC6900,

BSC6910)

6.3.3 Activation Observation

Verifying inter-RAT handovers of a special UE based on parameters

1. Choose a special UE whose IMEI TAC is configured on the RNC to start UE tracing on

the RNC LMT. Obtain the IMEI of the UE.

2. Use the UE to set up a CS call in a cell enabled with this feature.

3. Check the traced UE signaling messages:

l Check the value of usedFreqThreshold under the IE event2d contained in the

RRC_MEAS_CTRLd message. If the value of usedFreqThreshold is the same as the

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value of RSCP Threshold for Reporting 2D in the MML command SET

UHOCOMM, this feature has been activated.

l Check the value of usedFreqThreshold under the IE event2f contained in the

RRC_MEAS_CTRL message. If the value of usedFreqThreshold is the same as the

value of RSCP Threshold for Reporting 2F in the MML command SETUHOCOMM, this feature has been activated.

Figure 6-1 usedFreqThreshold IE diagram

Verifying power enhancement for the special UE

1. Choose a special UE whose IMEI TAC is configured on the RNC to start Iub tracing on

the RNC LMT. Obtain the IMEI of the UE.

2. Use the UE to set up a CS call in a cell enabled with this feature.

3. Check the traced messages:

Check the value of maxDl-Power under the IE Nbap-Msg contained in the

NBAP_RL_RECFG_PREP message. If the value of the IE maxDl-Power is the same as

the value of Max DL RL Power For Spec User in the MML command MOD

UCELLRLPWR , this feature has been activated.

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Figure 6-2 maxDl-Power IE diagram

6.3.4 Deactivation

Using MML Commands

1. Disable differentiated power control and differentiated handover for smartphones.

a. Run the RNC MML command MOD UIMEITAC. In this step, set The function of

the TAC to Special_User_Enhance, and clear the

SPECUSER_AMR_HOENHANCE_SWITCH and

SPECUSER_AMR_PWRENHANCE_SWITCH check boxes under the parameter

SpecUserFunctionSwitch .

b. Optional: Run the RNC MML command SET URRCTRLSWITCH. In this step,clear the RNC_CS_QUERY_UE_IMEI_SWITCH check box under the parameter

Process Control Switch 2.

MML Command Examples//Deactivating Voice Experience Improvement for Smartphones

//Disabling CS IMEI acquisition

SET URRCTRLSWITCH: PROCESSSWITCH2=RNC_CS_QUERY_UE_IMEI_SWITCH-0,

PROCESSSWITCH4=SEND_MSG_NULL_SWITCH-0;

//Disabling differentiated power control and differentiated handover for

smartphones

MOD UIMEITAC: TAC_FUNC=Special_User_Enhance, TAC=12345, Description="Smart Phone",

SpecUserFunctionSwitch=SPECUSER_AMR_HOENHANCE_SWITCH-0&SPECUSER_AMR_PWRENHANCE_SWITCH-0;

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Using the CME

NOTE

When configuring the UL CoMP feature on the CME, perform a single configuration first, and then perform a

batch modification if required. Configure the parameters of a single object before a batch modification. Perform

a batch modification before logging out of the parameter setting interface.

1. Configure a single object (such as a cell) on the CME.

Set parameters on the CME according to the operation sequence described in Table 6-2.

For instructions on how to perform the CME single configuration, see CME Single

Configuration Operation Guide.

2. (Optional) Modify objects in batches on the CME. (CME batch modification center)

To modify objects in batches, click on the CME to start the batch modification wizard. For

instructions on how to perform a batch modification through the CME batch modification center,

press F1 on the wizard interface to obtain online help.

Table 6-2 Parameters to be set on the CME


ParameterID

Configurable in CMEBatchModification Center

1 UIMEITAC RNC The function

of the TAC

TAC_FUNC

(BSC6900, BSC6910)

NO

Special User

Function

Switch

SpecUserFu

nctionSwitc

h

(BSC6900,

BSC6910)

2 URRCTRL

SWITCH

RNC Process

Control

Switch 2

PROCESSS

WITCH2

(BSC6900,

BSC6910)

YES

6.4 Performance Monitoring

To evaluate the gain of this feature for weak reception UEs, obtain data about the call drop rate

before and after enabling this feature and about call drop causes. Then, compare the gain based

on the data about call drops caused by weak coverage.

In addition, new counters related to Voice Service Experience Improvement for Weak Reception

UEs is introduced on the RNC, as shown in Table 6-3.

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Table 6-3 New counters added on the RNC

Counter Description Meaning

VS.RAB.SpecialUser.Abnor

mRel.CS

Number of CS RABs

Abnormally Released for Special UEs for Cell

This counter measures the

number of CS RABsabnormally released for

special UEs in the best cells.

VS.RAB.SpecialUser.Norm

Rel.CS

Number of CS RABs

Normally Released for

Special UEs for Cell

This counter measures the

number of CS RABs

normally released for special

UEs in the best cells.

A new key performance indicator (KPI), call drop rate of special UEs, has been added on the

RNC. This KPI is calculated with the following formula:

Call drop rate of special UEs = VS.RAB.SpecialUser.AbnormRel.CS/

(VS.RAB.SpecialUser.AbnormRel.CS+ VS.RAB.SpecialUser.NormRel.CS) x 100%

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7 ParametersTable 7-1 Parameter description

Parameter ID

NE MMLCommand

FeatureID

FeatureName

Description

TAC_F

UNC

BSC690

0

ADD

UIMEIT

AC

MOD

UIMEIT

AC

RMVUIMEIT

AC

WRFD-

020500

WRFD-

140205

Enhance

d Fast

Dorman

cy

Voice

Service

Experience

Improve

ment for

Weak

Receptio

n Ues

Meaning: The function of the TAC.If Fast_Dormancy

is selected, the TAC specifies the UEs that are enabled

with the Fast Dormancy feature; if

HSDPA_RB_Setup_Cmp_CRC is selected, the TAC

specifies that the UEs want to establish services on

HSDPA, however, the RNC sets up services on the

DCH, and retries on HSDPA later; if Special_User_En-

hance is selected, the TAC specifies the UEs that are

enabled with the Special User Enhance feature.

GUI Value Range: Fast_Dormancy,

HSDPA_RB_Setup_Cmp_CRC, Special_User_En-

hance

Unit: None

Actual Value Range: Fast_Dormancy,


hance

Default Value: None

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Parameter ID

NE MMLCommand

FeatureID

FeatureName

Description

TAC_FUNC BSC6910 ADDUIMEIT

AC

MOD

UIMEIT

AC

RMV

UIMEIT

AC

WRFD-020500

WRFD-

140205

Enhanced Fast

Dorman

cy

Voice

Service

Experie

nce

Improve

ment for

Weak

Receptio

n Ues

Meaning: The function of the TAC.If Fast_Dormancyis selected, the TAC specifies the UEs that are enabled

with the Fast Dormancy feature; if

HSDPA_RB_Setup_Cmp_CRC is selected, the TAC

specifies that the UEs want to establish services on

HSDPA, however, the RNC sets up services on the

DCH, and retries on HSDPA later; if Special_User_En-

hance is selected, the TAC specifies the UEs that are

enabled with the Special User Enhance feature.

GUI Value Range: Fast_Dormancy,


hance

Unit: None

Actual Value Range: Fast_Dormancy,


hance

Default Value: None

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Parameter ID

NE MMLCommand

FeatureID

FeatureName

Description

PROCESSSWIT

CH2

BSC6900 SETURRCT

RLSWI

TCH

WRFD-010101

WRFD-

140224

WRFD-

150215

WRFD-

020500

WRFD-

140205

WRFD-030011

WRFD-

020400

3GPPR9

Specific

ations

Fast CS

Fallback

Based

on RIM

SRVCC

from

LTE to

UMTSwith PS

Handov

er

Enhance

d Fast

Dorman

cy

Voice

Service

Experie

nceImprove

ment for

Weak

Receptio

n Ues

DRD

Introduc

tion

Package

Meaning: 1) LOAD_IRAT_HO_RNC_FILL_TL (CellLoad Information TL Input Switch) During inter-RAT

handovers from 3G cells to 2G cells, the RNC can

records information about load on 3G cells in the

RELOCATION REQUIRED container in the Tag

Length Value (TLV) format. When the switch is turned

on, the RNC records the Tag Length in the container.

When the switch is turned off, the RNC does not record

the Tag Length. 2) SEND_IDT_JUDGE_IU_RESET

(Switch for Transferring INITIAL UE Messages in the

IU Reset State) When the switch is turned on, the RNC

discards the INITIAL UE message from a CN node if

the Iu interface is in the reset state. When the switch is

turned off, the RNC handles the INITIAL UE message

from a CN node if the Iu interface is in the reset state.

3)

RNC_RBRECFG_DRD_FAIL_ROLLBACK_SWIT

CH (RB Reconfiguration DRD Rollback Switch) When

the switch is turned on, the RNC supports rollback

caused by failed directed retry decisions (DRDs) of RB

reconfiguration. When the switch is turned off, the RNC

does not support rollback caused by failed DRDs of RB

reconfiguration. 4)

RNC_CS_QUERY_UE_IMEI_SWITCH (CS IMEIRequest Switch) When this switch is turned on, the RNC

rather than the CN sends an IDENTITY REQUEST

message to obtain the international mobile equipment

identity (IMEI) of a UE. Note: When the CN checks the

serial number of direct transfer messages and the

SEND_MSG_NULL_SWITCH switch is turned off,

turning on this switch leads to inconsistency in the serial

number of direct transfer messages between the CN and

the UE. This causes CS service setup failures.

Therefore, you are not advised to turn on this switch.

Before turning on this switch, test the interworking

between the RNC and the CN. If the CN checks the

serial number of direct transfer messages, turn on

SEND_MSG_NULL_SWITCH under

"PROCESSSWITCH4" in the "SET

URRCTRLSWITCH" command. When the switch is

turned off, the RNC does not send an IDENTITY

REQUEST message to obtain the IMEI of a UE. 5)

RNC_PS_QUERY_UE_IMEI_SWITCH (PS IMEI

Request Switch) When the switch is turned on, the RNC,

rather than the CN, sends an IDENTITY REQUEST

message to obtain the IMEI of a UE. When the switch

is turned off, the RNC does not send an IDENTITY

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Parameter ID

NE MMLCommand

FeatureID

FeatureName

Description

REQUEST message to obtain the IMEI of a UE. 6)FACH_DTCH_CONGEST_P2D (P2D Switch for

Congested FACH or DTCH) When the switch is turned

on, UEs using PS services trigger the CELL_PCH-to-

CELL_DCH procedure (P2D procedure for short) on a

congested FACH or DTCH. When the switch is turned

off, UEs using PS services do not trigger the P2D

procedure on a congested FACH or DTCH. 7)

RNC_RBSETUP_DRD_FAIL_ROLLBACK_SWITC

H (RB Establishment DRD Rollback Switch) When the

switch is turned on, the RNC supports rollback caused

by failed DRDs of RB establishment. When the switch

is turned off, the RNC does not support rollback caused

by failed DRDs of RB establishment. 8)

PS_NOTIFYCN_NOTDOWNSIZE_SWITCH

(Switch for Not Triggering Rate Reduction Negotiation

Between the CN and the RNC After a PS Service Access

Failure) When the switch is turned on, the access rate is

not negotiated between the RNC and the CN if a PS

service fails to be admitted. When the switch is turned

off, the access rate is negotiated between the RNC and

the CN if a PS service fails to be admitted. 9)

ASU_RSP_TIMEOUT_HANDLE_SWITCH (Switch

for Performing the Optimized Soft-Handover TimeoutProcedure) When the switch is turned on, the RNC

considers that it has received an ACTIVE SET

UPDATE COMPLETE message during soft handover

procedure after the message has expired. When the

switch is turned off, RABs are directly released during

soft handover procedure after the ACTIVE SET

UPDATE COMPLETE message has expired. 10)

RB_RECFG_USER_INACT_SWITCH (Switch for

Performing the Optimized RRC Connection Release

Procedure with No Data Transmitted on the UE upon

UE State Transition Timeout) When the switch is turned

on, the RNC initiated the release process with the cause

of user inactive when the UE have no data to transmit.

When the switch is turned off, the RNC initiated the

release process with other causes when the UE have no

data to transmit. 11)

RRC_SCRI_NORM_REL_SWITCH (Switch for


Procedure on Receipt of a SIGNALLING

CONNECTION RELEASE INDICATION Message)

When the switch is turned on, the RNC initiated the

normal release process after receive SIGNALLING

CONNECTION RELEASE INDICATION message

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Parameter ID

NE MMLCommand

FeatureID

FeatureName

Description

from UE. When the switch is turned off, the RNC doesnot handle SIGNALLING CONNECTION RELEASE

INDICATION message during the process. 12)

CELLUPT_RLFAILURE_SRBREESTAB_SWITCH

(Switch for SRB Reestablishment During a Cell Update

with the Cause Value of RL Failure) When the switch

is turned on, SRBs are reestablished during cell update

procedure with the "RL Failure" cause value. When the

switch is turned off, SRBs are not reestablished during

cell update procedure with the "RL Failure" cause value.

13) CU_OVERLAP_DSCR_SWITCH (Switch for

Performing the Optimized Procedure for Concurrent

RB and Cell Update, Hard handover, or DRD) When

the switch is turned on, the DSCR procedure is

performed if RNC can not handles different processes

performed simultaneously. When the switch is turned

off,the DSCR procedure is not performed in this scenes.

14) TRB_RST_DSCR_SWITCH (Switch for

Performing the Optimized TRB Reset Procedure for PS

BE Services) When the switch is turned on, the DSCR

procedure is performed if a Layer 2 data transmission

error occurs. When the switch is turned off, the DSCR

procedure is not performed if a Layer 2 data

transmission error occurs. 15)RNC_FD_SCRI_FORCE_REL_SWITCH (Signaling

Connection Release Switch for UEs Supporting Fast

Dormancy) When the switch is turned on, if the RNC

receives a SIGNALING CONNECTION RELEASE

INDICATION from UE with the cause of "UE

Requested PS Data session end", the RNC triggers the

state transition for the UE. Otherwise, the RNC releases

the signaling connection. When the switch is turned off,

if the RNC receives a SIGNALING CONNECTION

RELEASE INDICATION from UE, the RNC triggers

the state transition for the UE. 16)

USRPLN_PRORATION_SHARED_ALO (Algorithm

Switch for Inter-Subrack Load Sharing on the User

Plane) When the switch is turned on, load sharing can

be performed based on the ratio of available user plane

resources to total user plane resources in a subrack.

When the switch is turned off, load sharing cannot be

performed based on the ratio of available user plane

resources to total user plane resources in a subrack. 17)

FP_IUUP_TRACE_SWITCH (Switch for Tracing UEs

Failing in FP Synchronization) When the switch is

turned on, UEs using FP can be traced in terms of data

streams. When the switch is turned off, UEs using FP

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Parameter ID

NE MMLCommand

FeatureID

FeatureName

Description

cannot be traced in terms of data streams. 18)RNC_PCHR_OUTPUT_CTRL_SWITCH (Switch for

Reducing PCHR Log Information for Normal

Procedure) The switch

RNC_PCHR_OUTPUT_CTRL_SWITCH controls

whether the RNC reduces information recorded in a

PCHR log for a normal procedure. When this switch is

turned on, the RNC reduces information in a

performance call history record (PCHR) log recorded

during a normal procedure and reports only the

following information blocks: -RRC_RELEASE -

CS_RAB_SETUP -PS_RAB_SETUP -CS_RAB_REL

-PS_RAB_REL -SHO -SYS_HO_OUT -

INTRA_FREQ_NET_OPT -STAT -

CS_RAB_QUALITY_STAT -

PS_RAB_QUALITY_STAT A procedure is abnormal

only when either of the following conditions is met: -

The RRC connection setup fails. -The RAB setup fails.

-The RAB is abnormally released. -The value of the

information element (IE) NAS-PDU contained in a

DIRECT TRANSFER message is ATTACH REJECT,

RAU REJECT, or LAU REJECT. If this switch is turned

off, the RNC does not reduce information recorded in a

PCHR log. 19) DTMF_SWITCH (DTMF Switch)When this switch is turned on, the RNC triggers hyper

frame number (HFN) modification, noise pouring, and

Iu-UP loopback functions after receiving a special

RANAP_DIRECT_TRANSFER message from a UE.

RsvdSwitch_Bit7 and RsvdSwitch_Bit6 under the

RsvdSwitch1 parameter in the SET UDPUCFGDATA

command control the HFN modification and noise

pouring functions, respectively. When this switch is

turned off, the RNC does not trigger HFN modification,

noise pouring, or Iu-UP loopback functions after

receiving a special RANAP_DIRECT_TRANSFER

message from a UE. 20)

FAST_CS_FB_BASEDON_RIM_SWITCH (Switch

for fast CSFB based on RIM) When the switch is turned

off, the RNC supports fast CSFB(CS fallback) based on

RIM. When the switch is turned on, the RNC does not

support fast CSFB(CS fallback) based on RIM. 21)

L2U_SRVCC_WITH_PS_HO_SWITCH Whether to

support LTE-to-UMTS CS and PS handovers

simultaneously. When this switch is turned off, LTE-to-

UMTS CS and PS handovers can happen

simultaneously. When this switch is turned on, LTE-to-

UMTS CS and PS handovers cannot happen

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Parameter ID

NE MMLCommand

FeatureID

FeatureName

Description

simultaneously.This switchUSRPLN_PRORATION_SHARED_ALO will be

deleted from later versions. Although the configuration

interface in this version supports delivery of the setting

of this switch, the system does not use this switch.

Therefore, this switch is not recommended.

GUI Value Range:

LOAD_IRAT_HO_RNC_FILL_TL,

SEND_IDT_JUDGE_IU_RESET,


CH, RNC_CS_QUERY_UE_IMEI_SWITCH,

RNC_PS_QUERY_UE_IMEI_SWITCH,

FACH_DTCH_CONGEST_P2D,


H, PS_NOTIFYCN_NOTDOWNSIZE_SWITCH,

ASU_RSP_TIMEOUT_HANDLE_SWITCH,

RB_RECFG_USER_INACT_SWITCH,

RRC_SCRI_NORM_REL_SWITCH,

CELLUPT_RLFAILURE_SRBREESTAB_SWITCH,

CU_OVERLAP_DSCR_SWITCH,

TRB_RST_DSCR_SWITCH,

RNC_FD_SCRI_FORCE_REL_SWITCH,

USRPLN_PRORATION_SHARED_ALO,

FP_IUUP_TRACE_SWITCH,RNC_PCHR_OUTPUT_CTRL_SWITCH,

DTMF_SWITCH,

FAST_CS_FB_BASEDON_RIM_SWITCH,

L2U_SRVCC_WITH_PS_HO_SWITCH

Unit: None

Actual Value Range:

















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Parameter ID

NE MMLCommand

FeatureID

FeatureName

Description


DTMF_SWITCH,



Default Value:

LOAD_IRAT_HO_RNC_FILL_TL-0&SEND_IDT_J

UDGE_IU_RESET-0&RNC_RBRECFG_DRD_FAI

L_ROLLBACK_SWITCH-1&RNC_CS_QUERY_U

E_IMEI_SWITCH-0&RNC_PS_QUERY_UE_IMEI_

SWITCH-0&FACH_DTCH_CONGEST_P2D-0&RN

C_RBSETUP_DRD_FAIL_ROLLBACK_SWITCH-

0&PS_NOTIFYCN_NOTDOWNSIZE_SWITCH-0&

ASU_RSP_TIMEOUT_HANDLE_SWITCH-0&RB_

RECFG_USER_INACT_SWITCH-0&RRC_SCRI_N

ORM_REL_SWITCH-0&CELLUPT_RLFAILURE_

SRBREESTAB_SWITCH-0&CU_OVERLAP_DSCR

_SWITCH-0&TRB_RST_DSCR_SWITCH-0&RNC_

FD_SCRI_FORCE_REL_SWITCH-0&USRPLN_PR

ORATION_SHARED_ALO-0&FP_IUUP_TRACE_

SWITCH-1&RNC_PCHR_OUTPUT_CTRL_SWITC

H-1&DTMF_SWITCH-1&FAST_CS_FB_BASEDO

N_RIM_SWITCH-1&L2U_SRVCC_WITH_PS_HO_

SWITCH-1

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Parameter ID

NE MMLCommand

FeatureID

FeatureName

Description

PROCESSSWIT

CH2

BSC6910 SETURRCT

RLSWI

TCH

WRFD-010101

WRFD-

140224

WRFD-

150215

WRFD-

020500

WRFD-

140205

WRFD-030011

WRFD-

020400

3GPPR9

Specific

ations

Fast CS

Fallback

Based

on RIM

SRVCC

from

LTE to

UMTSwith PS

Handov

er

Enhance

d Fast

Dorman

cy

Voice

Service

Experie

nceImprove

ment for

Weak

Receptio

n Ues

DRD

Introduc

tion

Package

Meaning: 1) LOAD_IRAT_HO_RNC_FILL_TL (CellLoad Information TL Input Switch) During inter-RAT

handovers from 3G cells to 2G cells, the RNC can

records information about load on 3G cells in the

RELOCATION REQUIRED container in the Tag

Length Value (TLV) format. When the switch is turned

on, the RNC records the Tag Length in the container.

When the switch is turned off, the RNC does not record

the Tag Length. 2) SEND_IDT_JUDGE_IU_RESET

(Switch for Transferring INITIAL UE Messages in the

IU Reset State) When the switch is turned on, the RNC

discards the INITIAL UE message from a CN node if

the Iu interface is in the reset state. When the switch is

turned off, the RNC handles the INITIAL UE message

from a CN node if the Iu interface is in the reset state.

3)


CH (RB Reconfiguration DRD Rollback Switch) When

the switch is turned on, the RNC supports rollback

caused by failed directed retry decisions (DRDs) of RB

reconfiguration. When the switch is turned off, the RNC

does not support rollback caused by failed DRDs of RB

reconfiguration. 4)

RNC_CS_QUERY_UE_IMEI_SWITCH (CS IMEIRequest Switch) When this switch is turned on, the RNC

rather than the CN sends an IDENTITY REQUEST

message to obtain the international mobile equipment

identity (IMEI) of a UE. Note: When the CN checks the

serial number of direct transfer messages and the

SEND_MSG_NULL_SWITCH switch is turned off,

turning on this switch leads to inconsistency in the serial

number of direct transfer messages between the CN and

the UE. This causes CS service setup failures.

Therefore, you are not advised to turn on this switch.

Before turning on this switch, test the interworking

between the RNC and the CN. If the CN checks the

serial number of direct transfer messages, turn on

SEND_MSG_NULL_SWITCH under

"PROCESSSWITCH4" in the "SET

URRCTRLSWITCH" command. When the switch is

turned off, the RNC does not send an IDENTITY

REQUEST message to obtain the IMEI of a UE. 5)

RNC_PS_QUERY_UE_IMEI_SWITCH (PS IMEI

Request Switch) When the switch is turned on, the RNC,

rather than the CN, sends an IDENTITY REQUEST

message to obtain the IMEI of a UE. When the switch

is turned off, the RNC does not send an IDENTITY

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Parameter ID

NE MMLCommand

FeatureID

FeatureName

Description

REQUEST message to obtain the IMEI of a UE. 6)FACH_DTCH_CONGEST_P2D (P2D Switch for

Congested FACH or DTCH) When the switch is turned

on, UEs using PS services trigger the CELL_PCH-to-

CELL_DCH procedure (P2D procedure for short) on a

congested FACH or DTCH. When the switch is turned

off, UEs using PS services do not trigger the P2D

procedure on a congested FACH or DTCH. 7)


H (RB Establishment DRD Rollback Switch) When the

switch is turned on, the RNC supports rollback caused

by failed DRDs of RB establishment. When the switch

is turned off, the RNC does not support rollback caused

by failed DRDs of RB establishment. 8)

PS_NOTIFYCN_NOTDOWNSIZE_SWITCH

(Switch for Not Triggering Rate Reduction Negotiation

Between the CN and the RNC After a PS Service Access

Failure) When the switch is turned on, the access rate is

not negotiated between the RNC and the CN if a PS

service fails to be admitted. When the switch is turned

off, the access rate is negotiated between the RNC and

the CN if a PS service fails to be admitted. 9)

ASU_RSP_TIMEOUT_HANDLE_SWITCH (Switch

for Performing the Optimized Soft-Handover TimeoutProcedure) When the switch is turned on, the RNC

considers that it has received an ACTIVE SET

UPDATE COMPLETE message during soft handover

procedure after the message has expired. When the

switch is turned off, RABs are directly released during

soft handover procedure after the ACTIVE SET

UPDATE COMPLETE message has expired. 10)

RB_RECFG_USER_INACT_SWITCH (Switch for


Procedure with No Data Transmitted on the UE upon

UE State Transition Timeout) When the switch is turned

on, the RNC initiated the release process with the cause

of user inactive when the UE have no data to transmit.

When the switch is turned off, the RNC initiated the

release process with other causes when the UE have no

data to transmit. 11)

RRC_SCRI_NORM_REL_SWITCH (Switch for


Procedure on Receipt of a SIGNALLING

CONNECTION RELEASE INDICATION Message)

When the switch is turned on, the RNC initiated the

normal release process after receive SIGNALLING

CONNECTION RELEASE INDICATION message

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Parameter ID

NE MMLCommand

FeatureID

FeatureName

Description

from UE. When the switch is turned off, the RNC doesnot handle SIGNALLING CONNECTION RELEASE

INDICATION message during the process. 12)


(Switch for SRB Reestablishment During a Cell Update

with the Cause Value of RL Failure) When the switch

is turned on, SRBs are reestablished during cell update

procedure with the "RL Failure" cause value. When the

switch is turned off, SRBs are not reestablished during

cell update procedure with the "RL Failure" cause value.

13) CU_OVERLAP_DSCR_SWITCH (Switch for

Performing the Optimized Procedure for Concurrent

RB and Cell Update, Hard handover, or DRD) When

the switch is turned on, the DSCR procedure is

performed if RNC can not handles different processes

performed simultaneously. When the switch is turned

off,the DSCR procedure is not performed in this scenes.

14) TRB_RST_DSCR_SWITCH (Switch for

Performing the Optimized TRB Reset Procedure for PS

BE Services) When the switch is turned on, the DSCR

procedure is performed if a Layer 2 data transmission

error occurs. When the switch is turned off, the DSCR

procedure is not performed if a Layer 2 data

transmission error occurs. 15)RNC_FD_SCRI_FORCE_REL_SWITCH (Signaling

Connection Release Switch for UEs Supporting Fast

Dormancy) When the switch is turned on, if the RNC

receives a SIGNALING CONNECTION RELEASE

INDICATION from UE with the cause of "UE

Requested PS Data session end", the RNC triggers the

state transition for the UE. Otherwise, the RNC releases

the signaling connection. When the switch is turned off,

if the RNC receives a SIGNALING CONNECTION

RELEASE INDICATION from UE, the RNC triggers

the state transition for the UE. 16)

USRPLN_PRORATION_SHARED_ALO (Algorithm

Switch for Inter-Subrack Load Sharing on the User

Plane) When the switch is turned on, load sharing can

be performed based on the ratio of available user plane

resources to total user plane resources in a subrack.

When the switch is turned off, load sharing cannot be

performed based on the ratio of available user plane

resources to total user plane resources in a subrack. 17)

FP_IUUP_TRACE_SWITCH (Switch for Tracing UEs

Failing in FP Synchronization) When the switch is

turned on, UEs using FP can be traced in terms of data

streams. When the switch is turned off, UEs using FP

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Parameter ID

NE MMLCommand

FeatureID

FeatureName

Description

cannot be traced in terms of data streams. 18)RNC_PCHR_OUTPUT_CTRL_SWITCH (Switch for

Reducing PCHR Log Information for Normal

Procedure) The switch

RNC_PCHR_OUTPUT_CTRL_SWITCH controls

whether the RNC reduces information recorded in a

PCHR log for a normal procedure. When this switch is

turned on, the RNC reduces information in a

performance call history record (PCHR) log recorded

during a normal procedure and reports only the

following information blocks: -RRC_RELEASE -

CS_RAB_SETUP -PS_RAB_SETUP -CS_RAB_REL

-PS_RAB_REL -SHO -SYS_HO_OUT -

INTRA_FREQ_NET_OPT -STAT -

CS_RAB_QUALITY_STAT -

PS_RAB_QUALITY_STAT A procedure is abnormal

only when either of the following conditions is met: -

The RRC connection setup fails. -The RAB setup fails.

-The RAB is abnormally released. -The value of the

information element (IE) NAS-PDU contained in a

DIRECT TRANSFER message is ATTACH REJECT,

RAU REJECT, or LAU REJECT. If this switch is turned

off, the RNC does not reduce information recorded in a

PCHR log. 19) DTMF_SWITCH (DTMF Switch)When this switch is turned on, the RNC triggers hyper

frame number (HFN) modification, noise pouring, and

Iu-UP loopback functions after receiving a special

RANAP_DIRECT_TRANSFER message from a UE.

RsvdSwitch_Bit7 and RsvdSwitch_Bit6 under the

RsvdSwitch1 parameter in the SET UDPUCFGDATA

command control the HFN modification and noise

pouring functions, respectively. When this switch is

turned off, the RNC does not trigger HFN modification,

noise pouring, or Iu-UP loopback functions after

receiving a special RANAP_DIRECT_TRANSFER

message from a UE. 20)

FAST_CS_FB_BASEDON_RIM_SWITCH (Switch

for fast CSFB based on RIM) When the switch is turned

off, the RNC supports fast CSFB(CS fallback) based on

RIM. When the switch is turned on, the RNC does not

support fast CSFB(CS fallback) based on RIM. 21)

L2U_SRVCC_WITH_PS_HO_SWITCH Whether to

support LTE-to-UMTS CS and PS handovers

simultaneously. When this switch is turned off, LTE-to-

UMTS CS and PS handovers can happen

simultaneously. When this switch is turned on, LTE-to-

UMTS CS and PS handovers cannot happen

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Parameter ID

NE MMLCommand

FeatureID

FeatureName

Description

simultaneously.This switchUSRPLN_PRORATION_SHARED_ALO will be

deleted from later versions. Although the configuration

interface in this version supports delivery of the setting

of this switch, the system does not use this switch.

Therefore, this switch is not recommended.

GUI Value Range:


















DTMF_SWITCH,



Unit: None

Actual Value Range:

















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Parameter ID

NE MMLCommand

FeatureID

FeatureName

Description


DTMF_SWITCH,



Default Value:

LOAD_IRAT_HO_RNC_FILL_TL-0&SEND_IDT_J

UDGE_IU_RESET-0&RNC_RBRECFG_DRD_FAI

L_ROLLBACK_SWITCH-1&RNC_CS_QUERY_U

E_IMEI_SWITCH-0&RNC_PS_QUERY_UE_IMEI_

SWITCH-0&FACH_DTCH_CONGEST_P2D-0&RN

C_RBSETUP_DRD_FAIL_ROLLBACK_SWITCH-

0&PS_NOTIFYCN_NOTDOWNSIZE_SWITCH-0&

ASU_RSP_TIMEOUT_HANDLE_SWITCH-0&RB_

RECFG_USER_INACT_SWITCH-0&RRC_SCRI_N

ORM_REL_SWITCH-0&CELLUPT_RLFAILURE_

SRBREESTAB_SWITCH-0&CU_OVERLAP_DSCR

_SWITCH-0&TRB_RST_DSCR_SWITCH-0&RNC_

FD_SCRI_FORCE_REL_SWITCH-0&USRPLN_PR

ORATION_SHARED_ALO-0&FP_IUUP_TRACE_

SWITCH-1&RNC_PCHR_OUTPUT_CTRL_SWITC

H-1&DTMF_SWITCH-1&FAST_CS_FB_BASEDO

N_RIM_SWITCH-1&L2U_SRVCC_WITH_PS_HO_

SWITCH-1

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Parameter ID

NE MMLCommand

FeatureID

FeatureName

Description

PROCESSSWIT

CH4

BSC6900 SETURRCT

RLSWI

TCH

WRFD-020302

WRFD-

010510

WRFD-

020304

WRFD-

0106090

2

WRFD-

0204000

2

WRFD-

020303

WRFD-

020305

WRFD-

020306

WRFD-

010101

WRFD-140205

Inter Frequen

cy Hard

Handov

er Based

on

Coverag

e

3.4/6.8/1

3.6/27.2

Kbps

RRC

Connect

ion and

Radio

Access

Bearer

Establis

hment

and

Release

Inter

Frequen

cy Hard

Handov

er Based

on DL

QoS

Combin

ation of

One CS

Service

and One

PS

Service

Inter

System

Direct

Retry

Inter-

RAT

Handov

er Based

on

Meaning: 1)AMR_HHO_FAIL_ROLLBACK_SWITCH (Hard

Handover Failure Rollback Switch for CS AMR Speech

Services) When this switch is turned on, the RNC

supports rollback caused by failed hard handovers of CS

AMR speech services. It is recommended that the timer

T312 be set to 1 second (SET UCONNMODETIMER:

T312=1;) before turning on this switch. If the timer

T312 is not set to 1 second, AMR noise will occur on

some UEs.If the AMRC feature is enabled, the RNC

supports the hard handover failure rollback of only for

12.2 kbit/s narrowband AMR services. When this

switch is turned off, the RNC does not support rollback

caused by failed hard handovers of CS AMR speech

services, leading to call drops. 2)

RRC_CONN_SETUP_OPT_SWITCH (RRC

CONNECTION SETUP Message Optimization

Switch) Whether optimization of the RRC

CONNECTION SETUP message takes effect. When

this switch is turned on, optimization of the RRC

CONNECTION SETUP message takes effect. If the IE

RLC info under SRB3 or SRB4 in the RRC

CONNECTION SETUP message contains the same

information as that under SRB2, the RNC replaces theIE RLC info under SRB3 or SRB4 with the IE same as

RB:0x2(2) to shorten the length of the message. When

this switch is turned off, the RNC does not replace the

IE RLC info under SRB3 or SRB4 in the RRC

CONNECTION SETUP message. 3)

PS_F2D_OVERLAP_CELLUPT_SWITCH (Switch

for Simultaneous PS Service Setup F2D and Cell

Update Procedures) During the PS service setup, the

RNC undoes a CELL_FACH-to-CELL_DCH (F2D for

short) procedure when it receives a Cell Update message

with the cause value "cell reselection" during the F2D

procedure. When this switch is turned on, the RNC

temporarily does not send the

RANAP_RAB_ASSIGNMENT_RESP message to the

CN after the F2D procedure is undone and waits until

the Cell Update message is processed and the PS service

is set up successfully. When this switch is turned off,

the RNC directly responds to the CN with a

RANAP_RAB_ASSIGNMENT_RESP message with

the cause value "failure-in-the-radio-interface-

procedure" after the F2D procedure is undone,

indicating that the PS service fails to be set up. 4)

TCP_ACK_ACCELERATOR_SWITCH (Switch for

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Parameter ID

NE MMLCommand

FeatureID

FeatureName

Description

Coverage

Inter-

RAT

Handov

er Based

on

Service

Inter-

RAT

Handov

er Basedon Load

3GPP

R9

Specific

ations

Voice

Service

Experie

nce

Improve

ment for Weak

Receptio

n Ues

Throughput Increase in the Case of Simultaneous uplink and downlink Transmissions) This switch is turned on

to increase the total throughput in the uplink and

downlink only when uplink and downlink HSPA data

is transmitted simultaneously. In other scenarios, you

are advised to turn off the switch. When this switch is

turned on, the function of increasing the total throughput

in the case of simultaneous uplink and downlink

transmissions takes effect. When this switch is turned

off, the function of increasing the total throughput in the

case of simultaneous uplink and downlink

transmissions does not take effect. 5)

PHY_RECFG_REEST_SWITCH (Switch for RL

Reestablishments During the Physical Channel

Reconfiguration) When this switch is turned on, a UE

sends the RNC a Cell Update message with the cause

value "Radio Link Failure" and the RNC reestablishes

the radio link for the UE under the following conditions:

The UE has not responded to the Physical Channel

Reconfiguration message. The RNC detects interrupted

downlink transmission on SRB2 or the NodeB reports

that all radio links of the UE are out of synchronization.

When this switch is turned off, the RNC does not

reestablish the radio link for the UE under the precedingconditions. 6) IUR_RL_REEST_SWITCH (Iur RL

Reestablishment Switch) When this switch is turned on,

the RNC deletes the existing Iur radio links for the UE

during the RNC performing radio link reestablishment.

When this switch is turned off, the RNC does not delete

the existing Iur radio links during the RNC performing

radio link reestablishment. 7)

RB_SETUP_RL_REEST_SWITCH (Switch for RL

Reestablishment or Cell Update During an RB Setup)

When this switch is turned on and the RNC is waiting

for a UE's response during a radio bearer (RB) setup

CELL_DCH-to-CELL_DCH (D2D) procedure: The

RNC reestablishes a radio link (RL) for the UE if the

RNC detects a signaling radio bearer (SRB) reset at

layer 2 (L2) or all uplink RLs for the UE are out of

synchronization upon expiration of the RL Restore

timer. For the RL reestablishment triggered by SRB

reset detected by RNC, the switch


under "PROCESSSWITCH2" in the "SET

URRCTRLSWITCH" command should be turned on.

The RNC performs a cell update if the RNC receives a

CELL UPDATE message with the cause value of RL

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Parameter ID

NE MMLCommand

FeatureID

FeatureName

Description

FAILURE, RLC UNRECOVERABLE ERROR, or REENTERED SERVICE AREA. When this switch is

turned off and the RNC is waiting for a UE's response

during an RB setup D2D procedure, the RNC does not

perform an RL reestablishment or cell update even if the

trigger conditions are met. 8)

RRC_CELLFACH_TRB_RESET_TO_F2D_SWITC

H (The CELL_FACH-to-CELL_DCH state (F2D)

transition switch by TRB reset) When the RNC receives

a TRB reset request from a UE in the CELL_FACH

state, the RNC cannot respond to the UE with a confirm

message if the FACH is congested. The

RRC_CELLFACH_TRB_RESET_TO_F2D_SWITC

H parameter specifies whether a UE performs an F2D

transition if the number of TRB reset requests from the

UE to the RNC reaches a specified threshold. If the

switch is turned on, the UE moves from the

CELL_FACH state to the CELL_DCH state. If the

switch is turned off, the UE does not move from the

CELL_FACH state to the CELL_DCH state. This

function helps to reduce the number of call drops caused

by the RNC not responding to the TRB reset requests

during FACH congestion. 9)

SEND_MSG_NULL_SWITCH (MM NULL MessageSwitch) Whether the RNC sends an MM NULL

message to the CS CN. If the switch

RNC_CS_QUERY_UE_IMEI_SWITCH under

PROCESSSWITCH2 in the SET URRCTRLSWITCH

command is turned on, testing the interworking between

the RNC and the CN is required. If the CN needs to

verify the serial number of direct transfer messages, turn

on this switch. The RNC rather than the CS CN sends

an IDENTITY RE

Voice Service Experience Improvement for Weak Reception UEs(RAN15.0_01)

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