Motorola GSM call setup flow chart

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Motorola GSM call setup flow chart Powered By Docstoc
					                                                                                                                     BSC                                1/4
 Mobile Terminating/Originating                       BTS                       MOTOROLA
 Call Establishment
    MS                  RSS L1         RSS                       RRSM/RCI                CRM/AM            SM                   SSM           MTP/MSC
                                                                                                                 MTP L3
                                                                                                                 (pre -proc)
                                                                                                                                  paging
                                                                                              Page Mobile request
                                             Paging command
             Paging Request                                                                      Page_req_from_msc
                                         Pegged per message:                                   For every decoded
                                                                                               Paging message
                                         ACCESS_PER_PCH
                                                                                               page_req_from_msc_fail
                                         Possibly increase:                                    For every undecoded
                                        PCH_AGCH_Q_LENGTH                                      paging message
                                   RSS PCH_Q_PAGE_DISCARD
                   RSS L1          ABIS                                                                                   MSG_DISCARD_ON_GPROC
    Channel request                                                                                                       MSG_DISCARD_ON_RSL
                        Channel
       RACH             request
      access_per_rach                    Channel required
ok_acc_proc_suc_rach                                                CHAN_REQ_CAUSE_ATMPT         Last SDCCH?
    Channel request                                                                              Sdcch_congestion
                                                                      channel required
    Last RACH or                                                       received                  Busy_SDCCH
                                                      Immediate assignment reject
                                                                                              No SDCCH?
      Immediate assignment reject                                                             ALLOC_SDCCH_FAIL
                                         CHAN_REQ_MS_BLK               Channel assigned
              AGCH
    T3126 starts                             channel activation                                ALLOC_SDCCH
                                                                       Internal MTB
          See next page for detailschannel activation
                                   acknowledge                        Internal MTB stops
                                       Immediate
                   Access_per_AGCH   assignment command               T3101 is started to
          Immediate assignment                                        Wait for “establish
                     on AGCH                                          Indication”
    T3126 stops
         Layer 3 Initial Message
                                         Establish indication
    T303 starts CM service request /                                  Ok_acc_proc
                                          MS power control
    T3230 start Paging Response etc.                                  ms_access_by_type
               Layer 2                                                T3101 expires, peg
     SABM on assigned SDCCH                                           Chan_req_ms_fail         Initial Layer 3 message
                (max. 6)                                              No ok_acc_proc           CM service request/
                                                                      is pegged                Paging Response etc.
          UA on SDCCH channel                                                                                                   Connection Request
       No UA if T3101 is expired                                                                               sccp_tconn_est
                                                                                                                                 Conn_req_to_msc
      measurement report                                                                                                        Connection Confirm
                                                                      release radio channel            sccp_tconn_est            Connection Refused
                    Channel release
                                                                                                       expires
                                                                                                         Conn_refused
            DTAP Message                       DTAP Message                DTAP Message: Authentication request                    DTAP Message
             Authentication Response
                                              DTAP Message                  DTAP Message:     Authentication   Response
                                                                                                                                   DTAP Message
           Classmark                                                               Request classmark                             classmark request
           enquiry                           Classmark change              update classmark                                        Classmark update
                                                                    classmk_update_fail
                                                                                                                                cipher mode request
     Ciphering mode                                                     ciphering request
     command                                                                                                                     Ciphering_successful
    T3230 stops                                                       cipher_comp_ms
     Ciphering mode complete
                                                                      Ciphering successful                                       Ciphering mode
      Missing measurement report                                                                                                 complete
                                                                                                                No ciphering
                                                                    cipher_comp_ms timeout                      Successful       Ciphering_successful
       Missing measurement report                                                                                                expires
                                                                                                                received
                                                                         Error Indication                                        cipher_mode_fail
              T200*(N200+1) timeout          Error Indication
              / Link_fail declared                                       Received
                                                                          RSS Error
                                          RF_LOSSES_SD                                        Radio Channel Release
                                                                                                                                    clear request
           DTAP: TMSI reallocation                                                                                               clr_req_to_msc
                  DTAP: setup                      DTAP: setup: Motorola will modify          some             parameters        like CCBS etc
         DTAP: call proceeding                                  DTAP: call proceeding

    T303 stops
    T310 starts
      measurement report
         DTAP: setup                            DTAP: setup                                          DTAP: setup                   DTAP: setup
                                                                                                                                        T303 starts
           DTAP: Call CONFirmed                                                                DTAP: Call CONFirmed

                                                                                                                                        T303 stops
                                                                David Zhang 10/01/2010                                                  T310 starts
                                                                                                                                                   2/4
                                                                                  MOTOROLA                    BSC
Mobile Terminating/Originating                             BTS
Call Establishment
  MS                     RSSL1          RSS                   RRSM/RCI               CRM/AM          SM                   SSM         MTP/MSC
                                                                                              AM
                                                                                                   CIC capacity request     assignment request
                                                                                                                           Unequipped CIC
                                                                       Initiate assignment    CIC capacity response
                                                                                                                            ma_req_from_msc
                                          No queuing allowed or     Assignment resource               assign_successful
                                                                                                                            And maybe:
                                          queue is full and all             request
                                                                    resource not available                                  efr_req_from_msc
                                          TCHs busy.                                                                        Or:
                                          DR not in operation.                              ALLOC_TCH_FAIL                  Ma_req_from_msc_fail
                                                                       Unsuccessful
                                          MA_CMD_TO_MS_BLKD                                                                Assignment failure
                                                                        assignment           Calls_queued
                                                                           Force queue       Tch_q_length                 No queuing message
                              RSS
                                          BSSMAP_T11 starts            Assignment queued                                  is sent to MSC when
    RSS L1                    ABIS
                                          BSSMAP_T11 stops             Assignment channel                                 Direct Retry is used
            mph activate req                                            assigned            TCH_Q_REMOVED                   Queuing indication
           channel_act(10000ms)             Physical context                                ALLOC_TCH
                                                                     Internal MTT starts Busy_TCH
       RSS L2                               request
                                            Physical context                                TCH_usage
     Fm connection
     indication




               mph activate                  confirmed               Internal MTT stops     TCH_congestion
               confirm                         channel activation
              channel_act stops                                      Internal MTB starts
                                            channel activation
            channel_act timeout              acknowledge             Internal MTB stops
                                      channel activation failure - assignment message
                                                                                                      Release request        clear request
                         No assignment channel Assigned                                                                       Clear Command
                         received, then BSSMAP_T11 expires                                            CLR_REQ_TO_MSC
         Assignment command                Assignment command
                                                                     BSSMAP_T10(T3107)
            Assignment failure                                                                     CLR_CMD_FROM_MSC
                                          Assignment failure          MA_CMD_TO_MS
                                          (Data indication)         MA_FAIL_FROM_MS
                                                                     Subseq Assignment
                                        SECOND_ASSIGN_ATMPT           resource request
     measurement report                                              resource not available
                                                                                             ALLOC_TCH_FAIL
                                          MA_CMD_TO_MS_BLKD Resource available
                                                                     Assignment channel
                                           Assignment command assigned                       ALLOC_TCH
         Assignment command                                                                                      BSC
                                                                      MA_CMD_TO_MS
    SABM                     SABM
                 FACCH
      UA                         UA
                                          Assignment complete MA_COMPLETE_FROM_MS
         Assignment complete                                                                          SM                  SSM
                                                                     SECOND_ASSIGN_SUC
                                                                                              Assignment successful
                       BSSMAP_T10(T3107) expires
                                                                                               Radio channel released         Clear request
                       No assignment Complete received
                                                                                                        SM Connection         Clear Command
                                                                                                               Request
                                                                                                          switch response        Assignment
                                                                                                           success                complete
                                                                                                                            Ma_complete_to_msc
                                                                                                          switch response TOTAL_CALLS
                                                                                                           failure         Assignment failure
         DISCONNECT: cause value 27-Destination out of order
                                                                                                                           (equipment_fail)
    T310 stops                                                                                  Or: No switch response           Clear command
     measurement report                                                                         success received
                                                                                                                               Clear request
     measurement report                                                                               assign_successful
                                                                                                      expires                  Clear command
                      RELEASE
   T308 starts RELEASE COMPLETE

     T308 stops CHANNEL RELEASE




Notes: different colours mean parallel possible status happening.
                                                                                                                                                           3/4
                                                                                          MOTOROLA                        BSC
     Mobile Terminating/Originating                                BTS
     Call Establishment
        MS                      RSSL1            RSS                    RRSM/RCI                 CRM/AM       SM                   SSM          MTP/MSC




                                                                               MS Terminated call
                     DTAP: ALERTING                                                                                                DTAP: ALERTING
          No Timer control for alerting                                                                   DTAP: ALERTING                      T310 stops
            DTAP: CONNECT                                                                                                        T301 starts(180seconds)
           T313 starts                                                                                    DTAP: CONNECT             DTAP: CONNECT
                    DTAP: CONNect ACK                                                                                                      T301 stops
                                                                                                        ( DTAP CONN ACK)             DTAP, CONN ACK
           T313 stops
           T313 expires                                                                 DTAP IND: DISCCONECT
              DTAP IND: DISCCONECT                                                                                                     DTAP:
                                                                                                                                       DISCONNECT
                                                                        David Zhang 27/03/2007
                                                       MS Originated Call                                                            No Timer control
                    DATA REQUEST, ALERT                                                                                              for alerting
             T310 stops                                                                                  ( DTAP Alert )                 DTAP, ALERT
               DATA REQUEST, CONN                                                                                                           T313 starts

             T310 stops                                                                                  ( DTAP CONN )                   DTAP, CONN

              DATA IND, CONN ACK                                                                          DTAP CONN ACK             DTAP CONN ACK
                measurement report                                                                                                         T313 stops
              Missing measurement report
           …




                    Missing measurement report
                    Missing measurement report         Error Indication
                                                                             Error Indication
                       Link_fail/T200*(N200+1)                               Received
                       timeout declared                                                RSS Error
                                                        RF_LOSSES_TCH                                                                  clear request
               MSC Initiated call Clearing                                                            Radio Channel Release
                                                                                                                                      CLR_REQ_TO_MSC
             measurement report
               DATA REQUEST, DISCONN                                                                                                        T306 starts
              progress indicator #8 "in-band information or appropriate pattern now available"          ( DTAP DISCONN )             DTAP, DISCONN
          OR                                                                                                                             T305 starts
               DATA REQUEST, DISCONN                                                                    ( DTAP DISCONN )             DTAP, DISCONN
             measurement report
             DATA IND, RELEASE                                                                           DTAP RELEASE                DTAP RELEASE

          T308 starts                                                                                                                       T305/6 stops
            measurement report
            measurement report
            Missing measurement report
            ………….




                    DTAP RELEASE COMPLETE                                       ( DTAP RELEASE COMPLETE )                              DTAP, RELEASE
                                                                                                                                       COMPLETE
          T308 stops
                                                                                                                                         T305/6 expires
           measurement report
             Missing measurement report
          DATA REQUEST, Channel release                                                              Release radio channel             DT1 BSSMAP,
                                                                                                          Radio_chan_released       CLEAR COMMAND
                                                                              De-allocate
                                                                              active DCH
                                                       De-activate SACCH      Channel De-allocated

                                                   Release indication                                Radio channel released
                                                                              Release indication     Radio_chan_released stops       DT1 Clear complete
                                                                              received
                                                    (RF Channel release)                                       SM disconnection           RLD
                                                  (RF Channel release                                                Request
                                                     acknowledge)        (RF Channel release                     switch response          RLC
                                                                         Acknowledge Received)
                                                                                                                                         SCCP Release
                                                                                                       (de-allocate SCCP
                                                                                                                                    sccp_released starts
                      Link_fail/T200*(N200+1)                                                           reference number )
                                                                                                                                      SCCP Release
                      Doesn’t timeout                                                                                                 Complete
                                                                                                           sccp_released stops


Notes: different colours mean parallel possible status happening.     David Zhang 27/02/2008
                                                                                                                                                   4/4
                                                                              MOTOROLA                       BSC
Mobile Terminating/Originating                              BTS
Call Establishment
  MS                  RSSL1           RSS                      RRSM/RCI               CRM/AM        SM                   SSM           MTP/MSC




       MS initiated call Clearing
     measurement report
          Data IND, DISCONNECT                                                              (DTAP: DISCONNECT)            DTAP: DISCONNECT
                                      …………




  T305 starts
              DATA REQ, RELEASE                                                                 (DTAP: RELEASE)              DTAP: RELEASE
   T305 stops                                                                                                                        T308 starts
                                                                                                                        T308 expires first time
              DATA REQ, RELEASE                                                                 (DTAP: RELEASE)             DTAP: RELEASE
                                                                                                                                    T308 starts
   Data IND, RELEASE COMPLETE                                         (DTAP: RELEASE COMPLETE)                             DTAP: RELEASE
                                                                                                                           COMPLETE
                                                                                                                                        T308
   T305 timeouts       RELEASE
                                                                                                                                        stops
  T308 starts
  T308 expires first timer
                       RELEASE
  T308 starts RELEASE COMPLETE

    T308 stops CHANNEL RELEASE

       measurement report
       Missing measurement report

       measurement report
        Missing measurement report
        Missing measurement report
        Missing measurement report             Error Indication
                                                                   Error Indication
          Link_fail/T200*(N200+1)                                  Received
          timeout declared                                                   RSS Error
                                                RF_LOSSES_TCH                                                                clear request
                                                                                            Radio Channel Release
                                                                                                                           CLR_REQ_TO_MSC
                                                                                                                            T308 expires twice
    DATA REQUEST, Channel release                                                           Release radio channel         CLEAR COMMAND
                                                                                                                            Radio_chan_released
                                                                    De-allocate
                                                                    active dch
                                               De-activate SACCH    Channel De-allocated

                                              Release indication                            Radio channel released
                                                                    Release indication      Radio_chan_released stops       DT1 Clear complete
                                               (RF Channel release) received                          SM disconnection         RLD
                                             (RF Channel release                                            Request
                                                acknowledge)        (RF Channel release                 switch response         RLC
                                                                    Acknowledge Received)
                                                                                                                               SCCP Release
                                                                                              (de-allocate SCCP
                                                                                                                           sccp_released starts
                                                                                               reference number )
                                                                                                                             SCCP Release
                                                                                                  sccp_released stops        Complete




                                                             David Zhang 27/02/2008
 Notes: different colours mean parallel possible status happening.

				
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Description: Motorola GSM call setup flow chart