odify the cell-oriented directed retry decision (drd) algorithm parameters of a cell

Modify Cell-Oriented DRD Algorithm Parameters(MOD UCELLDRD)

Function

Modify the Cell-Oriented Directed Retry Decision (DRD) algorithm parameters of a cell.

The DRD algorithm is used to select a suitable cell during the cell resource admission procedure for RRC orRAB. The algorithm is affected by the following factors:

- Current cell load

- Cell type

- Traffic type

- Intelligent networking strategy

- Cell resource admission result

Note

None.

Parameter

Parameter ID ParameterName

Parameter Description

CellId Cell ID Meaning: This parameter uniquely identifies a cell.GUI Value Range: 0~65535Actual Value Range: 0~65535Unit: NoneDefault Value: NoneRecommended Value: None

DRMaxGSMNum Max inter-RATdirect retrynumber

Meaning: This parameter specifies the maximum numberof inter-RAT RAB directed retries. It decides the size ofthe candidate set for inter-RAT DRD. The value 0indicates that inter-RAT RAB DRD is not applicable. Thisparameter can be cell-oriented.GUI Value Range: 0~5Actual Value Range: 0~5Unit: NoneDefault Value: NoneRecommended Value: 2

ServiceDiffDrdSwitch Servicedifferential drdswitch

Meaning: This parameter specifies whether the servicedifferential DRD algorithm will be applied.- ON: The service differential DRD algorithm will beapplied.- OFF: The service differential DRD algorithm will not beapplied.GUI Value Range: ON, OFFActual Value Range: ON, OFFUnit: NoneDefault Value: NoneRecommended Value: OFF

Modify Cell-Oriented DRD Algorithm Parameters(MOD UCELLDRD) http://127.0.0.1:52199/hedex/pages/31183950/02%20(2009-10-30)/311...

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LdbDRDSwitchDCH Load balanceDRD switch forDCH

Meaning: This parameter specifies whether the loadbalancing DRD algorithm will be applied for DCH services.- ON: The load balancing DRD algorithm will be applied.- OFF: The load balancing DRD algorithm will not beapplied.GUI Value Range: ON, OFFActual Value Range: ON, OFFUnit: NoneDefault Value: NoneRecommended Value: OFF

LdbDRDSwitchHSDPA Load balanceDRD switch forHSDPA

Meaning: This parameter specifies whether the loadbalancing DRD algorithm will be applied for HSDPAservices.- ON: The load balancing DRD algorithm will be applied.- OFF: The load balancing DRD algorithm will not beapplied.GUI Value Range: ON, OFFActual Value Range: ON, OFFUnit: NoneDefault Value: NoneRecommended Value: OFF

LdbDRDchoice Load balanceDRD choice

Meaning: This parameter specifies which choice the loadbalancing DRD algorithm will be applied.- Power: Power(Downlink none-HSDPA power is used forDCH services, and downlink HSDPA guarantee power isused for HSDPA services) will be applied to the loadbalancing DRD algorithm.- UserNumber: User number(Downlink R99 equivalent usernumber is used for DCH services, and downlink HSDPAuser number is used for HSDPA services) will be appliedto the the load balancing DRD algorithm.GUI Value Range: Power, UserNumberActual Value Range: Power, UserNumberUnit: NoneDefault Value: NoneRecommended Value: UserNumber

LdbDRDLoadRemainThdDCH Dl load balanceDRD powerremainthreshold forDCH[%]

Meaning: This parameter specifies the downlink loadthreshold to trigger load balancing DRD for DCH services.The load balancing DRD will probably be triggered onlywhen the downlink remanent non H power or remanentR99 equivalent user number of the cell is less than thisthreshold.GUI Value Range: 0~100Actual Value Range: 0~100Unit: per centDefault Value: NoneRecommended Value: 35


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LdbDRDLoadRemainThdHSDPA Dl load balanceDRD powerremainthreshold forHSDPA[%]

Meaning: This parameter specifies the downlink loadthreshold to trigger load balancing DRD for HSDPAservices. The load balancing DRD will probably betriggered only when the downlink remanent HSDPAguarantee power or remanent HSDPA user number of thecell is less than this threshold.GUI Value Range: 0~100Actual Value Range: 0~100Unit: per centDefault Value: NoneRecommended Value: 100

CodeBalancingDrdSwitch Code balanceDRD switch

Meaning: This parameter specifies whether the codebalancing DRD algorithm will be applied.- ON: The code balancing DRD algorithm will be applied.- OFF: The code balancing DRD algorithm will not beapplied.The DR_RAB_SING_DRD_SWITCH in SETUCORRMALGOSWITCH should be enable.If it iscombination service,the DR_RAB_COMB_DRD_SWITCHshould be enable.GUI Value Range: ON, OFFActual Value Range: ON, OFFUnit: NoneDefault Value: NoneRecommended Value: OFF

CodeBalancingDrdMinSFThd Minimum SFthreshold forcode balancedrd

Meaning: This parameter specifies one of the triggeringconditions of code balancing DRD. (The other condition isthe code occupancy.) This condition refers to that theminimum spreading factor of the best cell is not smallerthan the value of this parameter.GUI Value Range: SF4, SF8, SF16, SF32, SF64, SF128,SF256Actual Value Range: SF4, SF8, SF16, SF32, SF64,SF128, SF256Unit: NoneDefault Value: NoneRecommended Value: SF8

CodeBalancingDrdCodeRateThd Code occupiedrate thresholdfor codebalancingdrd[%]

Meaning: This parameter specifies one of the triggeringconditions of code balancing DRD. (The other condition isthe minimum spreading factor.) This condition refers tothat the code occupancy in the best cell is not lower thanthe value of this parameter.GUI Value Range: 0~100Actual Value Range: 0~100Unit: per centDefault Value: NoneRecommended Value: 13


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ReDirBandInd ReDirectiontarget bandindicator

Meaning: This parameter specifies the target frequencyband in the redirection process.GUI Value Range: Band1, Band2, Band3, Band4, Band5,Band6, Band7, Band8, Band9, DependOnNCell,BandIndNotUsedActual Value Range: Band1, Band2, Band3, Band4,Band5, Band6, Band7, Band8, Band9, DependOnNCell,BandIndNotUsedUnit: NoneDefault Value: NoneRecommended Value: DependOnNCell

ReDirUARFCNUplinkInd Redirectiontarget ULfrequency ind

Meaning: This parameter specifies whether the ULfrequency of the target cell of redirection needs to beconfigured.- TRUE: The UL frequency needs to be configured.- FALSE: The UL frequency does not need to beconfigured. It is configured automatically according to therelationship between UL and DL frequencies.GUI Value Range: TRUE, FALSEActual Value Range: TRUE, FALSEUnit: NoneDefault Value: NoneRecommended Value: None

ReDirUARFCNUplink Redirectiontarget uplinkUARFCN

Meaning: This parameter specifies the target uplinkUARFCN of a cell for RRC redirection.Depending on the band indication, the value range asshown below:Band1:Common frequencies: [9612-9888]Special frequencies: noneBand2:Common frequencies: [9262-9538]Special frequencies: {12, 37, 62, 87, 112, 137, 162, 187,212, 237, 262, 287}Band3:Common frequencies: [937-1288]Special frequencies: noneBand4:Common frequencies: [1312-1513]Special frequencies: {1662, 1687, 1712, 1737, 1762,1787, 1812, 1837, 1862}Band5:Common frequencies: [4132-4233]Special frequencies: {782, 787, 807, 812, 837, 862}Band6:Common frequencies: [4162-4188]Special frequencies: {812, 837}


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Band7:Common frequencies: [2012-2338]Special frequencies: {2362, 2387, 2412, 2437, 2462,2487, 2512, 2537, 2562, 2587, 2612, 2637, 2662, 2687}Band8:Common frequencies: [2712-2863]Special frequencies: noneBand9:Common frequencies: [8762-8912]Special frequencies: noneBandIndNotUsed:[0-16383]Assume that the target uplink UARFCN for RRCredirection is unspecified, the band indication is Band1,Band2, Band3, Band4, Band5, Band6, Band7, Band8, orBand9, and the target downlink UARFCN for RRCredirection is valid. Then, the default uplink UARFCN is asfollows:-If the DL frequency belongs to common frequencies, thenBand1: Uplink UARFCN = Downlink UARFCN - 950Band2: Uplink UARFCN = Downlink UARFCN - 400Band3: Uplink UARFCN = Downlink UARFCN - 225Band4: Uplink UARFCN = Downlink UARFCN - 225Band5: Uplink UARFCN = Downlink UARFCN - 225Band6: Uplink UARFCN = Downlink UARFCN - 225Band7: Uplink UARFCN = Downlink UARFCN - 225Band8: Uplink UARFCN = Downlink UARFCN - 225Band9: Uplink UARFCN = Downlink UARFCN - 475-If the DL frequency belongs to special frequencies, thenBand2: Uplink UARFCN = Downlink UARFCN - 400Band4: Uplink UARFCN = Downlink UARFCN - 225Band5: Uplink UARFCN = Downlink UARFCN - 225Band6: Uplink UARFCN = Downlink UARFCN - 225Band7: Uplink UARFCN = Downlink UARFCN - 225GUI Value Range: 0~16383Actual Value Range: 0~16383Unit: NoneDefault Value: NoneRecommended Value: None

ReDirUARFCNDownlink Redirectiontarget downlinkUARFCN

Meaning: This parameter specifies the target downlinkUARFCN of a cell for RRC redirection.GUI Value Range: 0~16383Actual Value Range: 0~16383Unit: NoneDefault Value: NoneRecommended Value: None


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Example

Open the load balance DRD switch for DCH users of cell 1:MOD UCELLDRD: CellId=1, LdbDRDSwitchDCH=ON;

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odify the cell-oriented directed retry decision (drd) algorithm parameters of a cell

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