Huawei & Ericssson parameters comparison.pdf

2008-08

www.huawei.com

HUAWEI Confidential

CDD Methodology & Strategy for GrameenPhone Project

Huawei GSM RNP

HUAWEI Confidential

HW BSS Parameters classification

Cell Data Design Strategy• Basic parameters

• Idle parameters

• Call control

• Channel management parameters

• Hand over parameters

• Power control parameters

• AMR parameters

• Neighbor cells list

MSC Parameters Design Strategy

HUAWEI Confidential

HW BSS Parameters Classification

HW BSS parameters structure

BSC Propertyparameters

Cell Attributeparameters

TRX Propertyparameters

BTS PropertyParameters

BSC Global Property Parameters

BSS Local Switch

BSC Device Parameters

Other Property Parameters

Basic Property Parameters

BTS Board Property Parameters

BTS Port Property Parameters

BTS Subrack Property Parameters

Antenna Parameters

……

Basic Attribute Parameters

Idle Attribute Parameters

Call control Parameters

Handover Parameters

Power Control

Channel Management Parameters

Other Property Parameters

……(2/3G External cells)

Frequency Attributes

RSL Setting

Channel Property Parameters

Device Property Parameters

Radio Link Alarm Parameters

……

HUAWEI Confidential



• Idle parameters

• Call control




• AMR parameters



HUAWEI Confidential

� Follow Current Configuration

Basis: For some parameters wherein we find direct equivalent with the existing parameter algorithm, we follow the Current Configuration to adopt the optimization achievement of the network and maintain the same network performance.

� Follow HW Baseline

Basis: Due to the fact that different vendors have some differences in developing their individual technologies, some algorithms are basically dissimilar. This leads to some unrelated or even distinctive parameters. HW opt to use the recommended values for such parameters.

� According to the special requirement from GP

--- For discussion with GP if there are special cases to apply this method.

� Design the data according to the project progress

For example: External cells list.

How to set the values:

Cell Data Design Strategy

HUAWEI Confidential

Cell Basic Information Parameters:

Follow Current

Follow Current

Follow Current

Follow Current

Follow Current

By discussion

Follow Current

Follow Current

Follow Current

Follow Current

Follow Current

Status

Must follow the status of the cell. If active or halted.

We will follow the same BCCH/BSIC immediately after swap but during the FAC, if some cells need optimization of this parameter,

values will be changed.

MUST follow existing.

To discuss with GP when to provide the final LAC value.

MUST follow existing.

Existing network has Macro and Micro layers. We follow the same configuration.

MUST follow existing. If BCCH Carrier is 900M or 1800M.

MUST follow the same naming convention as existing network.

Details

STATEActivity Status

BCCHNOBCCH

BSIC: NCC-BCC

NCC

BSIC: NCC-BCC

BCC

CGI: MCC-MNC-LAC-CI

CI (decimal system)

CGI: MCC-MNC-LAC-CI

LAC (decimal system)

CGI: MCC-MNC-LAC-CI

MNC

CGI: MCC-MNC-LAC-CI

MCC

LAYER-Operator Std

Layer of the Cell

CSYSTYPEFrequency Band

CELLCell Name

ExistingHW

HUAWEI Confidential

Follow CurrentACCMINRXLEV_ACCESS_MIN

Follow CurrentDTXUUL DTX (TCH/F and TCH/H)

MS and BTS Power Control Feature Activation.

Enables TCHs to be converted into SDCCH.

Allow Direct Retry or Assignment to Other Cell.

May allocate TCH at Imm. Assign. if SDCCH is busy.

If existing has UL and OL subcells with same BCCH, cell is Concentric.

Extended Range means Cell can carry traffic for TA>63 or more than ~35km. In theory, distance can

be upto ~120km.

Follow existing to avoid effect on the coverage of some subscribers.

Initially we follow current. But in Huawei system, we can further optimize the function separately for TCH/F

and TCH/H.

Network Assisted Cell Change (NACC). Existing set this at BSC level while Huawei sets it at cell level.

If there is 1 or more BPC/TS configured for EGPRS, then Edge is supported in the cell.

If GPRS is used or not in a cell.

Details

Follow Current

Follow Current

Follow Current

Follow Current

Follow Current

Follow Current

Follow Current

Follow Current

Follow Current

Follow Current

Follow Current

Follow Current

Status

DBPSTATEDL PC Allowed

DMPSTATEUL PC Allowed

ACSTATESDCCH Dynamic Allocation

Allowed

BSC: ASSOCDirect Retry

CHAP and ACSTATETCH Immediate Assignment

SCTYPECell Type

XRANGECell Extension Type

MAXTAMAX TA (bit period (1 bit =0.55km))

DTXDDL DTX (TCH/F and TCH/H)

BSC: NACCACTSupport NACC

NUMREQEGPRSBPCEDGE Support

GPRSGPRS Support

ExistingHW

Cell Basic Information Parameters:

HUAWEI Confidential

Follow existing to adopt any optimization done at cell level for Idle Mode.

Hysteresis for Cell Reselection at LAC borders. Follow existing to maintain signalling load on the boundaries at normal LocUp.

This timer is for the periodic location update. In existing, LU period is set to 5 hours. HW recommends only 2 hours for better Paging.This parameter should be aligned with the corresponding

MSC parameter.

Determines if Combined- BCCH or Non-Combined BCCH.

MUST follow existing value. Together with number of reserved CCCH blocks for AGCH, this determines the no. of paging groups.

MUST follow existing dimensioning of CCCH blocks for Access Grant and for Paging Channel.

Basically, parameter MUST follow the existing configuration. However, the format should be converted to 8-bit format.

0 1 2 3 4 5 6 7 is expressed as 11111111 in HW.

Must follow existing. These 2 parameters work together to set access of the cell and its priority at cell reselection.

Must follow existing. If IMSI attached and detached message should be sent or not to the system.

Details

Follow CurrentPTPT(s)

Follow CurrentTOTO

Follow CurrentCROCRO(2dB)

Follow CurrentCRHCRH

For discussionT3212T3212(6 minutes)

Follow CurrentBCCHTYPECCCH Conf

Follow CurrentMFRMSBS-PA-MFRAMS

Follow CurrentAGBLKBS_AG_BLKS_RES

Need to convert

NCCPERMNCC Permitted

Follow CurrentCBQCell_Bar_Qualify

Follow CurrentCBCell_Bar_Access

Follow CurrentATTATT

StatusExistingHW

Idle Mode Parameters:

HUAWEI Confidential

No equivalent parameter in Existing Network.

No equivalent parameter in Existing Network.

Details

HW BaselineDirected Retry Load Access Threshold

HW BaselineAssignment Cell Load Judge Enable

ValueHW

Follow Current

Follow Current

Follow Current

Follow Current

Follow Current

Follow Current

Follow Current

Follow Current

Value

If it is allowed to use different policies such as queuing, preemption, and direct retry.

Follow existing configuration for reporting 6 strongest NB.

MUST follow existing to establish Multiband Configuration.

Follow existing parameters to define the limitations in accessing the network.

Provide same speech versions to be used.

Details

PHSTATEAllow EMLPP

MBCRMBR

ECSCECSC

ACCEmergent Call Disable

ACCSpecial Access Control Class

ACCCommon Access Control Class

MAXRETMS MAX Retrans

AMR, AMRHRSpeech Version

ExistingHW

Call Control Parameters:

AMR Parameters: For Huawei AMR Feature, the recommended values will be used. This values are set by RND Experts for the Huawei internal equipment design functionality for AMR.

HUAWEI Confidential

Handover Parameters:

If MS Fast Moving HO is allowed, the period of penalty given to the level in a neighboring cell when an MS is

moving fast shall follow the existing value.Follow CurrentPTIMTEMPPenalty Time on Fast Moving HO

If MS Fast Moving HO is allowed, the penalty given to the level in a neighboring cell when an MS is moving fast

shall follow the existing value.Follow CurrentPSSTEMPPenalty on MS Fast Moving HO

Follow existing preference for the use of Fast Moving HO algorithm.

Follow CurrentFASTMSRE

GMS Fast Moving HO Allowed

Follow CurrentPTIMTAPenalty Time after TA HO(s)

Follow the penalty time given to the original serving cell where emergency handover is performed.

Follow CurrentPTIMBQPenalty Time after BQ HO (s)

Follow CurrentPSSTAPenalty Level after TA HO

Follow the penalty level given to the original serving cell where emergency handover is performed.

Follow CurrentPSSBQPenalty Level after BQ HO

Follow existing value for penalty level when HO failed.Follow CurrentPSSHFPenalty Level after HO Fail

Follow same number of missing MRs before HO may fail.

Follow CurrentMISSNMAllowed M.R Number Lost

Follow existing use of full power on MS during HO.Follow CurrentHPBSTATEMS Power Prediction after HO

Follow CurrentSCHOSDCCH HO Allowed

Follow existing preference to use Inter-BSC SDCCH HO or Inter-cell SDCCH HO.

Follow CurrentIBHOSICHInter-BSC SDCCH HO ALLowed

Follow same minimum time interval between handoversFollow CurrentTINITMin Interval for TCH HOs

DetailsValueExistingHW

HUAWEI Confidential


Follow existing value for minimum receive level on BTS/ candidate cell.

Follow CurrentBSRXMINMin UP Power on HO Candidate

Cell

Follow existing value for minimum receive level on MS from candidate cell.

Follow CurrentMSRXMINMin DL level on Candidate Cell

Follow existing threshold to trigger Emergency HO due to high TA.

Follow CurrentTALIMTALimit

Follow CurrentQLIMULUL Quality Limit for Emergency

Handover (AMRHR)

Follow value for Non AMR Quality Threshold. In the existing network, the same threshold is used for

Non AMR and for AMR HR connection.

Follow CurrentQLIMDLDL Quality Limit for Emergency

Handover (AMRHR)

Follow CurrentQLIMULAFRUL Quality Limit for Emergency

Handover (AMRFR)

Follow existing threshold for Emergency HO due to BQ to maintain the optimization level achieved by

the network for AMR FR connections

Follow CurrentQLIMDLAFRDL Quality Limit for Emergency

Handover (AMRFR)

Follow CurrentQLIMULUL Qual. Threshold

Follow existing threshold for Emergency HO due to BQ to maintain the optimization level achieved by

the network for non AMR connections

Follow CurrentQLIMDLDL Qual. Threshold

Following the existing value for this parameter indicating the maximum times of resending physical

information will maintain load on Abis for HO.Follow CurrentNOOFPHYSINFOMSGMax Resend Times of Phy Info

Will follow the current offset value applied on the neighboring cells to reduce pingpong HOs.

Follow CurrentOFFSETK Bias


HUAWEI Confidential


Follow existing preference for use of DTCB. Based on initial dump, DTCBSC if OFF

Follow CurrentDTCBSCConcentric Cell ATCB

Handover Algorithm Switch

Follow CurrentSCLDLULUL Subcell General Overload

Threshold(%)

Follow CurrentSCLDLULEn Iuo Out Cell General

OverLoad Thred

Follow CurrentSCLDLOLEn Iuo Out Cell Low Load

Thred

Follow CurrentSCLDUtoO Traffic HO Allowed

Follow existing preference for use of Load Distribution between subcells. Based on initial dump,

SCLD if OFF

Follow CurrentSCLDSCAssign Optimum Layer

Follow CurrentTAOLHYSTTA Hysteresis

Follow CurrentTAOLTAThresFollow existing preference for use of TA to trigger

HO between subcells. Based on initial dump, existing Network currently do not use this criterion.

Follow CurrentTAOLTA for UO HO Allowed

Follow CurrentLOL, LOLHYST,

BSTXPWRUtoO HO Received Level

Threshold

Follow existing Receive Level criteria for triggering HO between subcells. By applying formula from existing pathloss criterion: rxlev= BSTXPWR-LOL-

(+)LOLHYST (-FBOFFS)

Follow CurrentLOL, LOLHYST,

BSTXPWROtoU HO Received Level

Threshold


HUAWEI Confidential


Follow CurrentSCLDLoad HO of OL Subcell to UL

Subcell Enabled

Follow existing preference for use of Load Distribution between subcells. Based on initial

dump, SCLD if OFF

Follow CurrentSCLDLoad HO From UL Subcell to OL

Subcell Allowed

Follow CurrentDTCBHYSTDistance Hysterisis between Boudaries of UL And OL

Subcells(dB)

Follow existing preference for use of DTCB. Based on initial dump, DTCBSC if OFF

Follow CurrentDTCBDistance between Boudaries of

UL And OL Subcells(dB)

Follow CurrentSCLDSCIncoming-to-BSC HO Optimum

Layer

Follow existing preferred subcell for HO which is Underlaid subcell.

Follow CurrentSCLDSCPref. Subcell in HO of Intra-BSC

Follow CurrentTAOLTA Threshold of Imme-Assign

Pref.

Follow CurrentTAOLTA Pref. of Imme-Assign

Allowed

Follow existing threshold for TA Threshold during Assignment which is currently set to Maximum TA

or currently set to no limit.

Follow CurrentTAOLTA Threshold of Assignment

Pref.


HUAWEI Confidential

For the two parameters, we will follow current configuration of existing network to assure the congestion KPI.

But in RFQ, the requirement percentage about HR is 60%.For Benchmarking, these thresholds will be maintained but during FAC, when expansion will be carried out, threshold

will change accordingly.

Follow existing threshold to trigger Dynamic SDCCH Allocation

Details

Follow CurrentDTHAMRAMR TCH/H Prior Cell Load

Threshold

Follow CurrentDTHNAMRTCH Traffic Busy Threshold(%)

Follow CurrentSLEVELIdle SDCCH Threshold N1

StatusExistingHW

Call Control Parameters:

This parameter will be initially set to 0 or inactive. In the future, Dynamic PBT/Diversity may be used for coverage enhancement.

BaselineSupport Dynamic Transmit Diversity (PBT)

There is no direct equivalent to existing network. This parameter indicates whether to turn on the switch for the tight BCCH algorithm, and thus controls whether to enable the BCCH aggressive frequency

reuse algorithm.

BaselineTIGHT BCCH Algorithm Switch

HW baseline per scenario shall be used. Although SAS parameter in the existing network, also determines the channel allocation strategy,

the 2 parameters are not identical.BaselineChannel Allocate Strategy

BaselineBusy Threshold of TCH Traffic in Overlaid Subcell

Follow baseline. HR Thresholds in the existing network is only set per cell (AMR and Non-AMR) but there is no parameter for on subcell

level.

BaselineTCH Traffic Busy Underlay Threshold

Follow baseline. There is no equivalent parameter in the existing network for maximum dynamic and static SDCCHs in a cell.

BaselineCell SDCCH Channel Maximum

This parameter will follow the baseline due to distinct procedure for reverting back TCH from an SDCCH.

BaselineTCH Minimum Recovery Time (s)

DetailsValueHW

HUAWEI Confidential

Follow existing optimized parameter setting for the desired Signal Strength, SSDESUL - 4 will trigger

power control to step down the regulation.

Follow existing optimized parameter setting for the desired Signal Strength, SSDESUL + 4 will trigger

power control to step up the regulation.

Follow existing optimized parameter setting for the desired Signal Strength, SSDESDL - 4 will trigger

power control to step down the regulation.

Follow existing optimized parameter setting for the desired Signal Strength, SSDESDL + 4 will trigger

power control to step up the regulation.

Follow existing period of intervals for consecutive power regulations both for UL and DL.

Details

Follow CurrentSSDESULHwIII UL RexLev Lower Threshold

Follow CurrentSSDESULHwIII UL RexLev Upper Threshold

Follow CurrentSSDESDLHwIII DL RexLev Lower Threshold

Follow CurrentSSDESDLHwIII DL RexLev Upper Threshold

Follow CurrentREGINTDLHwIII Down Link Power Control

Adjust Period

Follow CurrentREGINTULHwIII Up Link Power Control

Adjust Period

StatusExistingHW

For other parameters about HWIII Power Control Algorithm, there is no direct equivalent with the existing network power control parameters. Therefore, we will follow HW recommended values for different scenarios.

HWIII Power Control Parameters:

HUAWEI Confidential

HWIII Power Control Parameters using HW Baseline:

BaselineHwIII DL HS Rex Qual. Lower

Threshold(dB)

BaselineHwIII DL HS Rex Qual. Upper

Threshold(dB)

BaselineHwIII DL FS Rex Qual. Lower

Threshold(dB)This parameter indicates the upper/ lower thresholds of DL/UL power control

quality level separately for FR and HR traffic channels. When the receive quality is higher than the value of this parameter, the BSC performs HW III power

control.

BaselineHwIII DL FS Rex Qual. Upper

Threshold(dB)

This parameter indicates the smooth window filter length of quality level through downlink power control.

BaselineHwIII DL Rex Qual. Slide Window

This parameter indicates the smooth window filter length of signal level through downlink power control.

BaselineHwIII DL RexLev Slide Window

This parameter indicates the exponent filter length of quality level through downlink power control.

BaselineHwIII DL Rex Qual. Exponent Filter

Length

This parameter indicates the exponent filter length of signal level through downlink power control.

BaselineHwIII DL RexLev Exponent Filter

Length

When the number of discarded measurement reports within the power control period is greater than the value of this parameter, the BSC stops power control.

BaselineHwIII Number of lost MRs allowed

BaselineHwIII UL Rex Qual.Adjust Factor

This parameter indicates the step ratio of the quality level adjusted by DL/UL power control.

BaselineHwIII DL Rex Qual. Adjust Factor

BaselineHwIII UL RexLev Adjust Factor

This parameter indicates the step ratio of the signal strength adjusted by power control.

BaselineHwIII DL RexLev Adjust Factor

DescriptionValuesHW

HUAWEI Confidential


BaselineHwIII UL HS Rex Qual.Lower

Threshold(dB)

BaselineHwIII UL HS Rex Qual.Upper

Threshold(dB)

BaselineHwIII UL FS Rex Qual. Lower

Threshold(dB)This parameter indicates the upper and lower thresholds of uplink and downlink power control quality and signal level of full-rate and half rate

traffic channels. When the receive quality is higher or lower than the value of this parameter, the BSC performs HW III power control.

BaselineHwIII UL FS Rex Qual. Upper

Threshold(dB)

BaselineHwIII UL Rex Qual. Slide

Window

This parameter indicates the period of the filtering of signal level and quality smooth window through uplink power control.

BaselineHwIII UL RexLev Slide Window

BaselineHwIII UL Rex Qual.Exponent

Filter Length

This parameter indicates the period of the filtering for RXLEV and RXQUAL index during uplink power control.

BaselineHwIII UL RexLev Exponent Filter

Length

DescriptionValuesHW

HUAWEI Confidential


BaselineHwIII DL MAX UpStep (dB)

This parameter indicates the maximum permissible adjustment step during up and down power adjustment based on signal quality.

BaselineHwIII DL MAX DownStep(dB)

BaselineHwIII DL AHS Rex Qual. Lower

Threshold(dB)

BaselineHwIII DL AHS Rex Qual.Upper

Threshold(dB)

BaselineHwIII DL AFS Rex Qual.Lower

Threshold(dB) This parameter indicates the upper and lower thresholds of DL/UL power control quality level separately for AMR FR/HR traffic channel. When the receive quality is higher or lower than the

value of this parameter, the BSC performs HW III power control.

BaselineHwIII DL AFS Rex Qual.Upper

Threshold(dB)

DescriptionValuesHW

This parameter indicates the maximum permissible adjustment step when the BSC increases uplink transmit power according to signal quality.

BaselineHwIII UL MAX UpStep(dB)

This parameter indicates the maximum permissible adjustment step when the BSC reduces uplink transmit power according to signal quality.

BaselineHwIII UL MAX DownStep(dB)

This parameter indicates the lower threshold of downlink power control quality level of AMR half-rate traffic channel. When the receive quality is lower than the value of this parameter,

the BSC performs HW III power control.Baseline

HwIII UL AHS Rex Qual.LowerThreshold(dB)

This parameter indicates the upper threshold of uplink power control quality level of AMR half-rate traffic channel. When the receive quality is higher than the value of this parameter, the

BSC performs HW III power control.Baseline

HwIII UL AHS Rex Qual.UpperThreshold(dB)

This parameter indicates the lower threshold of downlink power control quality level of AMR full-rate traffic channel. When the receive quality is lower than the value of this parameter,

the BSC performs HW III power control.Baseline

HwIII UL AFS Rex Qual.LowerThreshold(dB)

This parameter indicates the upper threshold of uplink power control quality level of AMR full-rate traffic channel. When the receive quality is higher than the value of this parameter, the

BSC performs HW III power control.Baseline

HwIII UL AFS Rex Qual.UpperThreshold(dB)

HUAWEI Confidential

Parameter is set to Yes MS can be handed over to other channels through assignment procedure in

intra-cell handover.

Parameter is set to Yes, RX level of the MS equals the measured RX level in FH minus the RX level obtained from the timeslots on the BCCH TRX.

If the load is greater than the value of this parameter, an overload message is sent to the BSC

from the BTS.

For Direct retry process, load of the current cell is equal to or greater than the value of this parameter

during channel assignment.

Follow existing setting. IF cell support HR function.

This parameter indicates the maximum transmit power level of MSs.

This parameter indicates the threshold used for the interference measurement. Used to measure the

uplink quality of the radio channels occupied by the serving MSs, calculates, and reports the interference level for each of the idle channels. This helps the BSC

to assign channels.

Details

BaselineNo MappingIntraCellHo to Ass SWITCH

BaselineNo MappingPWRC

BaselineNo MappingCCCH Load Threshold

BaselineNo MappingCell Direct Try Forbidden Threshold

Follow CurrentDHASupport Half Rate

Follow CurrentCCHPWRMS_TXPWR_MAX_CCH

For Discussion with GP

No MappingInterf. Band Threshold 5 (-dBm)

Follow CurrentLIMIT4Interf. Band Threshold 4 (-dBm)




For Discussion with GP

No MappingInterf. Band Threshold 0~5 (-dBm)

StatusExistingHW

Other Parameters

HUAWEI Confidential

The T3109 timer starts when the Channel Release message is sent and ends when the Release Indication

message is received.

The T8 starts when the handover command is sent and ends when the successful handover message is received.

The T3121 timer starts when the handover request is sent after 2G/3G system handover or inter-BSC handover

is triggered and ends when the handover complete message is received.

The T3107 timer starts when the assignment command is sent and ends when the assignment complete message is

sent.

Details

For Discussion with GPT3109(ms)




StatusHW

Cell Timers:

HUAWEI Confidential

External Cells List Design Methodology

SAMPLE CLUSTER: PH1-CL1

SOURCE

ERICSSON EXTERNAL NEIGHBORS

HUAWEI INTERNAL NEIGHBORS

HUAWEI EXTERNAL NEIGHBORS

Design the neighbor cells according to Cluster swap schedule



HUAWEI Confidential



• Idle parameters

• Call control




• AMR parameters



HUAWEI Confidential

MSC Parameters Related with RF Design:

To be discussed with GPNumber of maximum pagings in BTS Queue

A5/2,A5/1Encryption model

full rate version 1,2,3 and Half rate 1,3 supported Control parameter about FR and HR in MSC

30s,hard codedT308

30s,hard codedT305

330 min with gurad time 6 min(periodic LU)Location update of MSC

12 s(6+6)Paging failure delay

Interval paging

N/AThird paging model

LA,IMSISecond paging model

LA, TMSIFirst paging model

2MSC paging times

TMSI then IMSIMSC Paging Mode

Existing GP SettingsParameters

• Location update period of MSC: The current value of this parameter is 330 min. (5.5 hrs). We suggest to set this

value to 150 min (2.5 hours) and T3212 follows to 120 min in BSC (2 hours) to improve paging success rate.

• Encryption model: A5/0 will not be supportedt? Need to confirm by GP.

• Paging Strategy: After swap we can suggest GP to use the third paging.

HUAWEI Confidential

Thank Youwww.huawei.com

Huawei & Ericssson parameters comparison.pdf

Documents

Transcript of Huawei & Ericssson parameters comparison.pdf