GPRS Radio Parameters Setting

GSM Network Planning & Optimization Dept.

After completing this course, you are able toComprehend the basic meanings of common GPRS radio parametersKnow the setting of common GPRS radio parametersGrasp the instructions of GPRS radio parameter settingObjectives

OverviewR_PSBSC Parameters IntroductionR_PSBTS Basic ParameterGPRS Cell Reselection ParametersR_PSPOC ParameterR_PSTIMERCatalog

Function of Radio ParametersOverviewOptimization scheme formingNetwork optimizationData collectingOptimization scheme implementationAdjustment & validationRadio parameter adjustment optimize network performance improve network performance optimize resource configuration

Features of GPRS Radio ParametersOverviewCorrelation of GPRS radio parameters and GSM radio parametersFeatures of GPRS radio parameters

GPRS Radio Parameter ClassificationOverviewGPRS cell reselection parametersMeasurement report control parametersCell selection parametersCell access control parametersPower control parametersGPRS cell reselection parametersRadio parameter classification

QOSOverviewDelay classPeak value throughputReliability classQos priorityAverage throughputQOS

OverviewGPRS System MessageSystem messageSystem message 1System message 3System message 5System message 13System message 4System message 2

OverviewR_PSBSC Parameters IntroductionR_PSBTS Basic ParametersGPRS Cell Reselection ParametersR_PSPOC ParametersR_PSTIMERCatalog

CellFcThs BVC Flow Control ThresholdDescription:BVC flow control triggering threshold.BVC flow control is carried out on DL in Gb interface, BSS providing control parameters and SGSN executing it. The purpose is to avoid the condition that part of LLC data discard when packet channel is busy in BVC or new DL LLC data discard due to interior resource lack. value1~100%setting 80 by defaultR_PSBSC Parameter Introduction

CellFcPer BVC Power Control PeriodDescriptionIn BVC power control flow control, BVC leakage ratio statistics period is also called BVC long measurement period.In order to provide reference for BVC flow control in SGSN, BSSGP procedure make periodic statistic of leakage ratio of BVC; when long measurement timer overflows, BVC flow control process will be initiated and if the difference between forward and after leak rate exceed CellFcThs, it needs SGSN confirmation; When short statistics timer overflows, and the different between the forward and after leak rates exceeds CellFcThs, BVC flow control process will be initiated and wait for confirmation by SGSN. value1~100%setting 80 by defaultR_PSBSC Parameters Introduction

MsFcThs MS Power Control Threshold descriptionMS flow control flow triggering threshold.MS flow control is carried out on DL in Gb interface, with BSS providing parameters and SGSN executing it. The purpose is to avoid the condition that part of LLC data discard when packet channel is busy in BSS or new DL LLC data discard due to interior resource lack.value1~100%setting 80 by defaultR_PSBSC Parameters Introduction

R_PSBSC Parameters IntroductionMsFcPer MS Power Control PerioddescriptionIn MS power control process, MS leakage rate statistics period is also called MS long measurement period.In order to provide reference for flow control in SGSN, BSSGP procedure makes periodic statistic of leakage ratio of MS. when long statistics timer overflows, MS flow control process will be initiated and if the difference between forward and after leakage ratio exceeds CellFcThs, it needs SGSN confirmationWhen short measurement timer overflows, and the different between the forward and after leak rates exceeds MsFcThs, MS flow control process will be initiated and wait for confirmation by SGSN.value1~100%setting 80 by default

R_PSBSC Parameters IntroductionFlowCtrlMode Power Control Mode descriptiondifferent manufactures use different methods to realize SGSN power control. There are different modes in BSC, through which power control parameters is reported to SGSN. The modes are as follows:Mode 1report power control parameters based on flow on radio interface recorded by BSC.Mode 2report flow control parameters according to maximum flow allowed by the cell; Mode 3value1~100%setting 80 by default

R_PSBSC Parameters IntroductionMNO Network Operation Mode descriptionParameter used in MS( belonging to GPRS cell parameters) is broadcasted to MS in messages of PSI1, PSI13 and SI13 indicating network operation mode in the cell. The network operation modes are as follows:Network operation mode 1Network operation mode 2Network operation mode 3setting1 by defaultnetwork operation mode 2noteMNO of cell in one RAC shall be the same;Gs interface has effect on the selection of NMO.

R_PSBSC Parameters IntroductionN3101 Maximum Number of UL Data Block Allowed to Be Lost ContinuouslydescriptionParameter used in RLC/MAC layer in BRPIn packet UL transmission process, BSS will assign USF (corresponding to one UL TBF) for each UL block. For one USF, if the network receives data correctly on assigned UL block, counter N3101 will be null; If the losses on assigned UL block is continuous and the number of losses exceeds counter N3101, counter T3169 will start; When T3169 exhausts, TFI and USF can be used again. value 9~255Setting: 10 by default

MS

USF=n

BSS

USF=n

RlacMac_T3169

N3101max

..

USF=n

Release USF & TFI

R_PSBSC Parameters IntroductionN3103 Packet UL ACK/NONACK Retry NumberdescriptionParameter used in RLC/MAC layer in BRP.In packet UL transmission process, If the network detects that UL TBF ends (CV=0and V(Q)=V(R)) after receiving all RLC data block, the network shall send the packet uplink ack/unack message, set FAI (final ack ID) to be 1, include a valid RRBP field in the header of RLC/MAC control block and set N3103 to be zero. value 0~255setting 10 by default

MS

BSS

PACKET UPLINK ACK/NACK

PACKET UPLINK ACK/NACK

N3103max

..

PACKET CONTROL ACK

RlcMac_T3169

CV=0

CV=0

Release USF and TFI

R_PSBSC Parameters IntroductionN3105 Maximum Number of UL RLC/MAC Control Message Allowed to Be Lost Continuously descriptionParameter used in RLC/ MAC layer in BRP.In packet DL transmission process, BSS will configure RRBP field in DL RLC data block at regular intervals, with the help of which informs MS to send RLC/MAC control message (such as packet DL ack message )on relative UL block. For one TBF, If the losses RLC/MAC control message are continuous and the number of losses exceeds N3105N3105max), T3195 will start; when T3195 times out, the network will reuse TFI resource. value 0~255setting 10 by default

MS

BSS

RlcMac_T3195

N3105max

..

Data BlockRRBP

Release TFI

Data BlockRRBP

Data BlockRRBP

PACK DLLINK ACK/NACK

OverviewR_PSBSC Parameters IntroductionR_PSBTS Basic ParametersGPRS Cell Reselection ParametersR_PSPOC ParametersR_PSTIMERCatalog

R_PSBSC Parameter IntroductionNSEI Network Service Entity ID descriptionIn BSSGP layer, for management conveniences, each GPRS cell is given a BVC(NSEI+BVCI) which is affiliated to one NSE. NSE is network service entity, which is numbered in the network and is identified by NSEI. value0~0xFFFFsettingconfigured by the operatorremarkGenerally, one BSC is considered to be an independent service entity containing several NSE in ZXG10 system.

R_PSBSC Parameter IntroductionNSEI Network Service Entity ID Structure sketch:

R_PSBSC Parameters IntroductionBVCI BSSGP Virtual IDdescriptionBSSGP virtual connection (BVC) provide a means for communication among different BSSGP entities. BVC is the basic of sending BSSGP PDU between corresponding PTP, PTM and signaling entities. Each virtual connection has an identification (BVCI), which helps network service layer to route BSSGP PDU to corresponding entities. value0~65535(0: identifies signaling function entity; 1: identifies PTM function entity)setting configured by the operator remarkin one NSE, each GPRS cell can be identified by one BVCI.

R_PSBSC Parameter IntroductionRAC Routing Area CodeDescription:Similar to GSM system, LAC is applied in GPRS system to manage a group of cells; whats more, LAC is divided into RAC which are identified by RAI(MCCMNCLACRAC) in GPRS system. When MS cell in ATTACH state is reselected, if RAI of new and old cell is different, RAC update will be initiated. SGSN will call MS in standby state in the RAC when PS or CS data shall be sent in the network. Value0~255Setting configured by the operatorEffect too delicate RAC differentiation will lead to frequent RAC update and add to signaling load.remarkone RAI belongs to one SGSN.

R_PSBSC Parameter IntroductionT3168descriptionParameter used in MS which is a GPRS cell optional parameter and is broadcast to MS in PSI1, PSI13, and SI13 indicating the maximum time waiting for PACKET UPLINK ASSIGNMENT message after sending PACKET DOWNLINK ACK/UNACK message (or Channel Request Description IE contained in PACKET DOWNLINK ACK/UNACK message ). ssetting7 by default(4.0 second)

R_PSBSC Parameter IntroductionT3192descriptionParameter used in MS.In packet DL transmission process, if pending RLC data block is the last DL data block, the network will initialize DL TBF release through sending a RLC data block, of which FBI is 1, and containing a valid RRBP field. setting0500msremarkthe time length which T3192 represents shall be less than the time length of T3193(protecting DL TBF) so as to ensure the exclusiveness of TFI.

R_PSBSC Parameters IntroductionT3192influence The greater the value of the parameter is, the longer TBF relative resource (including TFI and timeslot) will be reserved. Similarly, TBF sending time will be longer which will easily lead to congestion. The smaller the value of the parameter is, the longer DL TBF establishment will be. Because MS will release TBF quickly and if receiving new DL data, the network will make paging or initiate immediate assignment process (if MS is standby).If new DL data arrives at the network before T3192 expires, the network will send packet DL assignment message to establish a new DL TBF to shorten the TBF establishment.

R_PSBSC Parameters IntroductionT3192Signaling Procedure Sketch:

T3192

MS

BSS

< RlcMac_T3191

Ack Mode

Data Block

Release resource

Data BlockRRBP,FBI=1

PACKET DOWNLINK ACK/NACKFAI1

T3192

MS

BSS

< RlcMac_T3191

Non-ack mode

Data Block

Release resource

Data BlockRRBP,FBI=1

PACKET CONTROL ACK

R_PSBSC Parameters IntroductionDrxTimeMax Non-DRX Mode Holding Time descriptionParameters used in MS, which is a GPRS cell optional parameter and broadcast to MS in PSI1, PSI13 and SI13 indicating DRX_TIMER_MAX value. When MS mode changes from packet transmission to packet idle (also called non-DRX), the time that MS stay non-DRX is decided by minimum of NON_DRX_TIMER and DRX_TIMER_MAX.setting2 by default

R_PSBSC Parameters IntroductionDrxTimeMax Non-DRX Mode Holding TimeinfluenceIn non-DRX mode, MS will monitor CCCH blocks, and PCU will contain context concerning MS. Immediate assignment messages about DL TBF establishment can be sent on AGCH in stead of making paging. Non-DRX mode will help to shorten DL TBF establishment, which will also quicken the consumption of battery.

R_PSBSC Parameters IntroductionBsCvMax Maximum sending block numberdescriptionBsCvMax is a GPRS cell optional parameter used in MS which is broadcast to MS in the messages of PSI1, PSI13 and SI13 indicating the maximum number of blocks allowed to be sent in each timeslot. CV value is average number of pending data block in each timeslot which is sent by MS when the value is less than 15. Setting:15300msinfluence If BS_CV_MAX is set to be too small, RLC data block may be retransmitted before ack message is received, which will result in the high occupancy rate of radio resource; If BS_CV_MAX is toohighly set, the efficiency of the sliding window may be reduced which may result in the slow data transferring rate

R_PSBSC Parameters IntroductionPanDec, PanInc, PanMax N3102 Decision ValuedescriptionThey are GPRS cell optional parameters used in MS which are broadcast in messages of PSI1, PSI13 and SI13, indicating the value of PAN_DEC, PAN_INC and PAN_MAX. Each time cells get reselected, N3102 will resume PanMax. When N3102 < 0, TBF will abnormally released and cell reselection will be executed. When PanDec, PanInc or PanMax is zero, N3102 is invalid.valuePanDec, PanInc, and PanMax07settingPanDec0,PanInc1), and PanMax7by default

R_PSBSC Parameters IntroductionPanDec, PanInc, PanMax N3102 Decision Valueinfluence To add PANMAX and PANINC, and reduce PANDEC will reduce the possibilities of cell reselection due to TBF abnormal release when MS cant receiving Packet Uplink Ack; at the same time, MS sending window will pause and occupy radio resources for a long time which is the source of inefficiency of radio utility rate. To reduce PANMAX and PANINC, and add PANDEC will easily lead to cell reselection due to TBF abnormal release, reduce TBF normal release rate and affect data transferring rate.

R_PSBSC Parameters IntroductionPbcchBlks PBCCH Reserved Blocks Description:Parameters used in MSIs a PCCCH structural parameter and is broadcast to MS in PSI1 This parameters indicates the number of 52 multiframe(12 blocks) assigned to be PBCCCH. PBCCH is used by packet system messages sent at high-speed and low speed. This parameter shall be configured with PSI1_REPEAT_PERIOD in PSI1 message to ensure the availability of blocks to send messages both at high speed and low speed. Setting: 0 by default

R_PSBSC Parameters IntroductionPagBlkRes PAGCH Reserved Blocks NumberdescriptionIs parameters used in MSIs a PCCCH structural parameter and is broadcast to MS in PSI1 message. It indicates the number of blocks (PAGCH, PDTCH and PACCH ) exclusive of packet paging and PBCCCH. UL assignment message can be sent firstly on these blocks so as to quicken TBF establishment. After channel requests on PRACH, UL assignment message can be received on PCCCH which is in the same timeslot with PRACH. setting5 by default

R_PSBSC Parameters IntroductionParchBlks PRACH Reserved Blocks descriptionIs parameter used in MS. Is a PCCCH structural parameter and is broadcast to MS in PSI1 message. It indicates the fixed blocks reserved for PRACH in PDCH loading PCCCH. These blocks need to be identified by USF=FREE. MS uses this parameters or USF=FREE to assign PRACH. setting2 by default

R_PSBSC Parameters IntroductionTxInt Packet Access Attempt Interval AmplitudedescriptionIs parameters used in MS. Is a PRACH control parameter and is broadcast to MS in PSI1 message. Each time new connection is established, MS will send channel request message in PRACH. PRACH is a ALOHA. To improve MS accessibility, MS is allowed to send multiple channel requests before receiving packet assignment message. Before getting response after previous channel request, MS will resend channel request within random time. TxInt is random waiting time. Setting: 2 by default(4 timeslots)

R_PSBSC Parameters IntroductionS Packet Access Attempt Interval Period descriptionIs parameters used in MS.Is PRACH control parameter and is broadcast to MS in PSI1 message. Each time a new connection is established, MS will send channel request message in PRACH. PRACH is a ALOHA. To improve MS accessibility, MS is allowed to send multiple channel requests before receiving packet assignment message. TxInt is random wait time.setting2 by default

R_PSBSC Parameters IntroductionMaxRetrans Maximum Attempt Number descriptionIs a PRACH control parameter used in MS and is broadcast to MS in PSI1. Indicates maximum number of access attempts in PRACH of MS with the priority level from 1 to 4. valuethis parameter is an array, array element is 4, the first array element corresponds to the maximum attempts with the 1 priority, and so forth.Setting: 2 by default

R_PSBSC Parameters IntroductionRaColor Router Area Color CodedescriptionIs parameter used in MS. Is broadcast to MS in SI3, SI4, SI7 and SI8.The function of RaColor is similar to BCC in GSM system. To ensure that MS can initiate router area update process (when cell reselection is made cross-BSC), adjacent cells with the same RAC are assigned with different RaColor. Setting: 2 by default(4 timeslot)

R_PSBSC Parameters IntroductionNcNoDrxPer NC Non-DRX Holding TimedescriptionIs a parameter used in MS. Is network control measurement parameter broadcast in PSI5 and indicates minimum time of MS stay non-DRX after sending NC measurement report for once. When Ctrl Order is NC0 (no measurement report when MS makes cell reselection), it isnt broadcast in PSI5.Setting: 2 by default( invalid when NC=0)

R_PSBSC Parameters IntroductionCsChansThs Minimum Idle CS Channel NumberdescriptionIs a parameter used in DBS in PnIndicates minimum number of CS idle channels when PS+CS channels is change to be PS channels. If idle CS channel number is lower than the minimum number, dynamic PS+CS channel cant be changed to be PS channel; and vice versa. value: 0~255Setting: 2 by default

R_PSBSC Parameters IntroductionPccchIndTh PCCCH Overload ThresholddescriptionIs a parameter used by FUC in BTS.Indicates PCCCHPRACHPPCHoverload threshold.Is an array consisting of 3 in the unit of .value0100%setting 50 by default

OverviewR_PSBSC Parameters IntroductionR_PSBTS Basic ParametersGPRS Cell Reselection ParametersR_PSPOC ParametersR_PSTIMERCatalog

GPRS Cell Selection Arithmeticdescription C1RXLEV-GPRS_RXLEV_ACCESS_MIN-MAX(GPRS_MS_TXPWR_MAX_CCH-P,O) RXLEV-----receiving average power level (unit: dBm) GPRS_RXLEV_ACCESS_MIN-----minimum GPRS access power level (unit: dBm) GPRS_MS_TXPWR_MAX_CCH-----maximum transmit power level of MS (unit: dBm) P-----MS maximum output power (unit: dBm)GPRS Cell Reselection Parameters

GPRS Cell Selection ArithmeticC31 arithmetic formula: C31RXLEV-HCS_THR (service cell)C31=RXLEV-HCS_THR- GPRS_TEMPORARY_OFFSET*H(GPRS_PENALTY_TIME-T)*L (adjacent cell)PRIORITY_CLASS (service cellPRIORITY_CLASS (adjacent cellL=0PRIORITY_CLASS (service cellnot equal to PRIORITY_CLASS (adjacent cellL=1GPRS Cell Reselection Parameters

GPRS Cell Reselection ArithmeticC32 arithmeticTo select the cell among the cells with the same level priority, the following formula are used:C32=C1(serving cellC32=C1+GPRS_RESELECT_OFFSET-GPRS_TEMPORARY_OFFSET*H(GPRS_PENALTY_TIME-T)*(1-L)(adjacent cellWhen MS is in ready state and serving cell has the same RAC with the adjacent cell, C32=C32+GPRS_CELL_RESELECT_HYSTERESISWhen MS is in standby or ready state and serving cell has different RAC with the adjacent cell, C32=C32+RA_RESELECT_HYSTERESISWhen MS is in standby state and serving cell has different RAC with the adjacent cell C32=C32GPRS Cell Reselection Parameters

ReselOff GPRS Cell Reselection Offset descriptionIs a parameter used in MS.Is broadcast to MS in PSI3. In GPRS, C32 is used for cell reselection. Similar to C2 in GSM, cell reselection offset (ReselOff) is used in C32 arithmetic. When ReselOff is 0dB, message will not be sent. setting0dB by defaultGPRS Cell Reselection Parameters

ReselHys GPRS Cell Reselection Lag Description:Is parameter used in MSIs broadcast in PSI3.When cell selection is made, and LAC of the source cell and target cell is found to be different, a location update shall be initiated. settingReselHys is generally set to be 4 or 5GPRS Cell Reselection Parameters

C31_HYST C31 "Cell Reselection HysteresisdescriptionIs a parameter used in MSIs broadcast in PSI3 and indicates whether ReselHys is available in C31. Value0 unavailable 1 availableSetting: 0GPRS Cell Reselection Parameters

RadAcRetry Random Access RetrydescriptionIs parameter used in MS. Is broadcast in PSI3 and indicate whether MS is allowed to access another cell. In packet transmission process, if abnormal release occurs, running TBF will be discarded; If its allowed to access other cell (RadAcRetry=1), cell reselection will be executed and UL TBF will be established in new cell. If there are other suitable cell , MS can reselect previous cell within T_RESEL second.value0 not allowed 1 allowedsetting 0 by defaultGPRS Cell Reselection Parameters

T_RESEL Reselect The Previous Cell IntervaldescriptionIs parameter used in MS. Is broadcast is PSI3. when the cell is abnormally released due to a cell reselection, within T_RESEL, this cell is not allowed to be reselected except that that are no other choice. When T_RESEL is 5 second, the message will not be sent. setting0 by default5 sec. GPRS Cell Reselection Parameters

RaReselHys Routing Area Reselection HysteresisdescriptionIs a parameter used in MS. Is broadcast in PSI3 and indicates the hysteresis value during choosing a cell in another RAC when MS is in STANDBY and READY state. When the value of this parameter is the same with that of ReselHys, it will not be sent in the message.Setting: 7 by defaultGPRS Cell Reselection Parameters

TempOffset Cell Reselection Temporary Offset descriptionIs a parameter used in MS.Is broadcast in PSI3. In GPRS system, C32 is used in cell reselection. Similar to C2 in GSM, C32 has an temporary offset (TempOffset), and the effective time is decided by PenalTime.setting the same with offset value in C2 of GSM system.GPRS Cell Reselection Parameters

PenalTime Cell Reselection Penalty Time descriptionIs a parameter used in MS. Is broadcast in PSI3. In GPRS system, C32 is used in cell reselection. Similar to C2 in GSM, C32 has an temporary offset (TempOffset), and the effective time is decided by PenalTime.Setting: 0 by defaultGPRS Cell Reselection Parameters

OverviewR_PSBSC Parameters IntroductionR_PSBTS Basic ParametersGPRS Cell Reselection ParametersR_PSPOC ParametersR_PSTIMERCatalog

Alpha Power Control descriptionIs a parameter used in MS. Is a power control parameter of the network and is broadcast in PSI1, PSI13 andSI13. GPRSThis parameter decides of MS transmitting power control. MS transmitting power is decided by the following formula: P =min0 - CH - a (C + 48)PMAXsetting0 by defaultR_PSPOC Parameters

T_Avg_W Power Control Filter Period in Packet Idle Mode descriptionIs a parameter used in MS. Is a power control parameter of BSC and GPRS system and is broadcast in PSI1, PSI13 and SI13. This parameter is a period of signaling strength filter in packet idle mode. setting 0 by defaultR_PSPOC Parameters

T_Avg_T Power Control Filter Period in Packet Transmitting ModedescriptionIs a parameter used in MS. Is a power control parameter in BSC and GPRS system and is broadcast in PSI1, PSI13 and SI3. Its period of power strength in packet transmitting mode. setting0 by defaultR_PSPOC Parameters

PcMeasChan Power Control Measurement ChanneldescriptionIs a parameter used in MS. Is a power control parameter in BSC and GPRS system and is broadcast in PSI1, PSI13 and SI13.It indicates DL power strength measurement location for UL power control purpose. setting0 by defaultR_PSPOC Parameters

N_Avg_I Power Control Filter ConstantdescriptionIs a parameter used in MS.Is a power control parameter in BSC and GPRS system and is broadcast in PSI1, PSI13 and SI13. It a constant to filter interference signaling for power control. setting0 by defaultR_PSPOC Parameters

UlPwCtrl UL Power Control Strategy descriptionit decides GPRS UL power control strategy. setting0 by defaultR_PSPOC Parameters

DlPwCtrl DL Power Control Strategy descriptionIs a parameter used in MS.Is a power control parameter of BSC and GPRS system and is broadcast in PSI1, PSI13 and SI13.This parameter decides of MS transmitting power control. MS transmitting power is decided by the following formula: P =min0 - CH - a (C + 48)PMAXsetting0 by defaultR_PSPOC Parameters

DlPwCtrl DL Power Control Strategydescriptionit decides GPRS DL power control strategy.setting0 by defaultR_PSPOC Parameters

OverviewR_PSBSC Parameters IntroductionR_PSBTS Basic ParametersGPRS Cell Reselection ParametersR_PSPOC ParametersR_PS TimerCatalog

T3169 descriptionTimer start condition: when N3101 = N3101max, or N3103 = N3103max.Timer stop condition: noTime out action: release USF and TFI resourceValue 0~0xFFFF10mssetting 500 by default5 sec. R_PS Timer

T3191descriptionIn packet DL transmission process, if pending RLC data block BSN is the biggest, the network will initialize DL TBF release through sending a RLC data block, of which FBI is 1, and containing a valid RRBP field. T3191 will be started then. The following is processing flow in non-ack mode. Processing flow in ack mode is silimar.R_PS Timer

MS

BSS

RlcMac_T3193

< RlcMac_T3191

PACKET CONTROL ACK message received

Data Block

Release TBF

Data BlockRRBP,FBI=1

PACKET CONTROL ACK

MS

BSS

PACKET CONTROL ACK message not received

RlcMac_T3191

Data Block

Release TBF

Data BlockRRBP,FBI=1

T3191descriptionTimer start condition: when the last RLC data block is sent (FBI is marked by 1).Timer stop condition: PACKET DOWNLINK ACK/NACK or PACKET CONTROL ACKNOWLEDGEMENT is received. Timer shall be started if RLC data block with FBI 1 shall be transmitted. Overtime indicationrelease TFI.value 0~0xFFFF10mssetting 500 by default(5 sec. R_PS Timer

T3193 descriptionTimer starting condition: when last PACKET DOWNLINK ACK/NACK or PACKET CONTROL ACKNOWLEDGE message is received. Timer stop condition: when a new DL TBF is established. Expire indicationrelease TFI value 0~0xFFFF10mssetting 500 by default5 sec. R_PS Timer

T3195 descriptionIts TBF protecting time when radio link fails or MS doesn t respond due to cell change. In packet DL transmitting process, if N3105 expiresBSS will start T3195; when T3195 gets exhausted, TFI can be used again. timer starting condition: N3105 = N3105max. timer stop condition: no expire indication: release TFIvalue 0~0xFFFF10mssetting 500 by default5 sec. R_PS Timer

V1.020077MSHLR1 2 310.5s or 2s 25s or 15s350s or 75s 4best effort1 2 3198kbit/s 2048kbit/s1310.2 best effortBVCFlowCtrl BVCTrueBSCBVCFalseBSCBVCTrueBmaxRB*=B+L(p)-(Tc-Tp)XRBSSBmaxRPDUSGSNBmaxRBB*TpTcSGSNBVCMSBSSSGSN100msBSSCBVCMSCBSSSGSNBVCFlowCtrl BVCTrueBSCBVCFalseBSCBVCTrueBmaxRB*=B+L(p)-(Tc-Tp)XRBSSBmaxRPDUSGSNBmaxRBB*TpTcSGSNBVCMSBSSSGSN100msBSSCBVCMSCBSSSGSNMSFAI=1/RRBPTBFRRBPN3103/N3103N3103N3103maxT3169T3169TFIUSFFBI1RRBPRLCMSRRBPFAI1/MSRRBPT3192T3192PDCCHT3192PACKET DOWNLINK ASSIGNMENTPACKET TIMESLOT RECONFIGURET3192T3192TBF CVCOUNT DOWN VALUETBF x = round((TBC-BSN-1) / NTS) CV = x if x