TIMERS Listed
3
Connecti Location RR Connection Establishment Timer at MS Tx- integer Timer at MS T3126 Ch_request abort timer Timer at MS T3122 Wait indication timer Assig Cell Timer rr_t3101 Main signalling establis BSC timer assign_successful BTS timer bssmap_T11 Queueing Timer BTS timer bssmap_T10 Timer Target BTS ho_complete BSC monitors rr_t3103 Source BTS bssmap_T8 rr_t3105 rr_ny_rep Source BSC bssmap_T7 Source BTS BSC ho_allocation BTS rr_t3109 BTS rr_3111 BTS rf_ch_release T3120 (pg 24 RACH) max- retrans pg 79 (BSS timers) BTS assignment Timer (in call setup or Intra Only in Inter-BSC page 88 (BSS Timers) handover_recognized_ period Only in Inter-BSC In Intra- BSC, & intracell HO page 104(BSS Timers)
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GSm Timers
Transcript of TIMERS Listed
Sheet1Connection establishmentLocationRR Connection EstablishmentTimer StartsTimer StopsTimer at MST3120 (pg 24 RACH)Tx- integermax-retranson sending the Ch-request(access burst)on receiving the Imme_Assign or reject msgTimer at MST3126Ch_request abort timeron expiry of last ch-request ms senton expiry stops the ch request procedure is abortedTimer at MST3122Wait indication timeron reciept of Imm_assign_Reject from BSStill timer gets expired. Till that o RACH can be established10 Sec in MOTOAssignment to TCHCell Timerrr_t3101Main signalling establishmentWhen Imm_assign sent on AGCH.on SABM establisment Indication from MSBSC timerassign_successfulpg 79 (BSS timers)on initiate assignment to BTSon successful assignmentassign_successful must be greater than sum of T10 & T11BTS timerbssmap_T11Queueing Timeron all TCH got full with no TCH available for assignment.on expiry of T11, "clr_req_to_msc" sentBTS timerbssmap_T10BTS assignment Timer (in call setup or Intra cell HO)on TCH assignment command to MSon successful TCH assignment from MSTimers in HandoverTarget BTSho_completeat target bts after allocating TCH for HO req from BSCstops on ho complete from MS to Target CellBSC monitorsrr_t3103at BSC when initiate HO cmd is transmitted to BTS from BSCStops on HO success from target BTS or HO fail from source BTSSource BTSbssmap_T8at BTS when HO Command is transmitted to MS from BTSstops on BSC clears the S_channel on successful Ho or when the HO fail message is received at source.rr_t3105when physical information from T bts is sent to MSStops when SABM is receivedrr_ny_repno of times the phy info sent to MSSource BSCbssmap_T7Only in Inter-BSC Handoverpage 88 (BSS Timers)Starts when S_BSC sends ho_rqrd message to MSCStops on receiving the successful MSC approvalSource BTShandover_recognized_periodOnly in Inter-BSC HandoverBSCho_allocationIn Intra-BSC, & intracell HOpage 104(BSS Timers)Starts at BSC when HO request is forwarded to T_cellStops on successful HO allocation at TargetBTSBTSrr_t3109Deactivate associated SACCHBTSrr_3111when 1st DISC is received to BSS from MSBTSrf_ch_release
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