Nothing Special   »   [go: up one dir, main page]
Scribd Logo
Upload

Welcome to Scribd!

  • 80 views

    QOS MS Origi Counters Ed1

    Uploaded by

    Oni Ayodeji
    1. The document outlines the process and signaling between a mobile station (MS) and core network elements to establish a call on a traffic channel (TCH) after initial random access over a dedicated control channel (SDCCH). 2. Key steps include authentication and security procedures over SDCCH, followed by physical context establishment and channel activation to open a TCH, and assignment of related parameters to complete the transition from SDCCH to TCH. 3. Potential failure causes are also indicated at different points in the procedure, which can result in a radio link failure and trigger the MS to release the connection.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as PPT, PDF, TXT or read online from Scribd

    QOS MS Origi Counters Ed1

    Uploaded by

    Oni Ayodeji
    80 views1 page
    1. The document outlines the process and signaling between a mobile station (MS) and core network elements to establish a call on a traffic channel (TCH) after initial random access over a dedicated control channel (SDCCH). 2. Key steps include authentication and security procedures over SDCCH, followed by physical context establishment and channel activation to open a TCH, and assignment of related parameters to complete the transition from SDCCH to TCH. 3. Potential failure causes are also indicated at different points in the procedure, which can result in a radio link failure and trigger the MS to release the connection.

    Original Description:

    Original Title

    _QOS_MS_Origi_Counters_ed1

    Copyright

    © Attribution Non-Commercial (BY-NC)

    Available Formats

    PPT, PDF, TXT or read online from Scribd

    Did you find this document useful?

    Is this content inappropriate?

    1. The document outlines the process and signaling between a mobile station (MS) and core network elements to establish a call on a traffic channel (TCH) after initial random access over a dedicated control channel (SDCCH). 2. Key steps include authentication and security procedures over SDCCH, followed by physical context establishment and channel activation to open a TCH, and assignment of related parameters to complete the transition from SDCCH to TCH. 3. Potential failure causes are also indicated at different points in the procedure, which can result in a radio link failure and trigger the MS to release the connection.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as PPT, PDF, TXT or read online from Scribd
    Download as ppt, pdf, or txt
    80 views1 page

    QOS MS Origi Counters Ed1

    Uploaded by

    Oni Ayodeji
    1. The document outlines the process and signaling between a mobile station (MS) and core network elements to establish a call on a traffic channel (TCH) after initial random access over a dedicated control channel (SDCCH). 2. Key steps include authentication and security procedures over SDCCH, followed by physical context establishment and channel activation to open a TCH, and assignment of related parameters to complete the transition from SDCCH to TCH. 3. Potential failure causes are also indicated at different points in the procedure, which can result in a radio link failure and trigger the MS to release the connection.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as PPT, PDF, TXT or read online from Scribd
    Download as ppt, pdf, or txt
    of 1

    QOS MS originated

    Already Synchronised
    on FCH,SCH of the
    BSC MSC
    Serving Cell Air - Um BTS Abis A
    MC8a (Paging) (Paging)
    RACH
    CHAN REQUEST (RAND) SDCCH Assignment
    CHAN REQUIRED (FN,Rand,TA) MC8c T3113 (7s)
    (Ghost RACH=SDCCH Access Failure) MC04 Congest-no free SDCCCH
    CHAN ACTIV (open SDCCH,TA,MSBTSMaxPwr)
    MC148 (Assign) (Max retrans(2) MS:T3126-T3120)
    DTAP
    -1- CHAN ACTIV ACK (SDCCH Open)
    BSSMAP
    Radio IMMEDIATE ASSIGNMENT CMD (SDCCH Allocat°) MC8b,d (Reject)
    IMMEDIATE ASSIGNMENT (SDCCH Alloc,FN,TA,Rand)
    Link AGCH T3101 (2/3s) MC149 (Expiry) CLREQ:Radio Failure BSSAP=BSSMAP+DTA
    Establi T3122/T3120
    SABM (L3info=CM-ServiceRequest,IMSI) (BadCov,PB,Interf;DummyRACH:noise,ChanReq,HoAccess)
    SDCCH ESTABLISH INDICATION (L3 Info, Assign. Succ)
    MC02x (Lu,SmS..)
    SDCCH
    UA (Level2/3Info, Link Establish ACK) MC01 (PagResp) CR- Connection Request (SCCP, L3info)
    BSS Problem=NO Counter=MC148-(MC01+MC02)-MC149 CC- Connection Confirm (SCCP)
    SDCCH_Success=MC01+MC02+MC10(HO Complete)MC390 (Alloc./Trx) T9105 Virtual Circuit trough N7 Signalisation

    SDCCH RSL N7 - COC AUC / HLR


    Rand+KI
    AUTHENTIF REQUEST (Rand Nb)
    SDCCH Drop: CLREQ
    AUTHENTIF RESPONSE (Signature)
    MC138:Radio Pb
    -2- Ciphered CYPHERING MODE CMD (Algorithm KC)
    SDCCH
    -RadioInterfaceFail
    SDCCH -RadioLinkFail on Ab
    Phase CYPHERING MODE COMPLETE
    MC137:BSS Pb
    SETUP (Type of Call, data, called party number) -RadioInterfaceFail
    CALL PROCEEDING -O&M Intervention
    MC07:HO Fail
    SETUP (for TC)  MC13a TCH Choice -RadioInterf MessFail
    CALL Confirm (TC)  T11(5s) DRQuery MC140a (B8)
    ASSIGNMENT REQUEST (TCH Allocation)
    PHYSICAL CONTEXT REQUEST
    PHYSICAL CONTEXT CONFIRM (TA, PC from SDCCH) MC812=C612a,b.. CLREQ:Congest
    Assign Fail: No Radio Ress Avail
    CHAN ACTIV (open TCH,TA,PC,DTX,cipher) MC703 (Attempt)
    MC921c CLREQ: Preempted calls (pci1>pci2)
    CHAN ACTIV ACK (Level of Interfer, TCH open)(MC16 (B6)) PM Type1: C701a,b,c..
    SDCCH
    -3- SACCH? ASSIGNMENT CMD (TA,PC,DTX info,SysInfo6et7) ASSIGNMENT CMD (TCH Allocation) MC140b (B8)
    TCH T200 (Ncell BCCH,Arfcn List,LAI,Radio link time out) T3107 (14s) MC746b (Expiry) Assign Fail: Radio Interf Fail (Radio Pb) TCNAFLR
    Assign. MS Timer BSS Problem= MC14b(B7)
    SABM (Level2 Link Establish)
    FACCH ESTABLISH INDICATION (Connection) MC14b Assign Fail: BSS Pb (Abis,Bts/Bsc HWorSw)
    FACCH
    UA (Level2 Link Establish ACK)
    ASSIGNMENT COMPLETE (Assign. Succ) MC718 (trx)
    FACCH

    R-TCH R-TCH T-TCH - CIC PS


    TN
    ALERTING [Chan Rel + ACK ???]
    FACCH
    CONNECT
    FACCH
    Call Drop: Connetion Failure Indication:
    -4- BSS-Syst Problem=14c+739 - Radio link Fail MC736 CLREQ: Radio Interf Fail
    Alerting
    Connect - Remote TC Fail MC739 CLREQ: Equipment Fail (TC,µWave,BssSw,Hw)
    BSS Pb Operator: MC14C CLREQ: Radio Interface Fail (O&M Intervention)
    CONNECT ACK
    FACCH Taxation
    MC717a (Succ int DR) HO Failure without Reversion:
    MC717b (Succ int&ext:HO+DR) MC621 CLREQ: Radio Interf Message Fail (Drop HO)
    MC712 (Succ outg int&ext
    Preemption:
    HO) MC921a,b.. CLREQ: Preemption
    Normal Realease=unknown MC662 (Succ intra HO)
    RTCH SuccessEnd=718+(717a+717b)-712

    Alcatel University Lannion B8-ed01 - Juin 2005

    You might also like