QOS MS Originated Call Flow Diagram
QOS MS Originated Call Flow Diagram
QOS MS Originated Call Flow Diagram
BTS
Air - Um Abis
MC8a (Paging) CHAN REQUIRED (FN,Rand,TA) CHAN ACTIV (open SDCCH,TA,MSBTSMaxPwr) CHAN ACTIV ACK (SDCCH Open) IMMEDIATE ASSIGNMENT CMD (SDCCH Allocat) ESTABLISH INDICATION (L3 Info, Assign. Succ) MC02x (Lu,SmS..) MC01 (PagResp) T9105 MC8b,d (Reject) MC148 (Assign) MC8c SDCCH Assignment MC04 Congest-no free SDCCCH (Max retrans(2) MS:T3126-T3120) (Paging) T3113 (7s)
BSC
MSC
RACH
AGCH
T3122/T3120
SDCCH
SABM (L3info=CM-ServiceRequest,IMSI)
SDCCH
UA (Level2/3Info, Link Establish ACK) BSS Problem=NO Counter=MC148-(MC01+MC02)-MC149 MC390 (Alloc./Trx) SDCCH_Success=MC01+MC02+MC10(HO Complete)
SDCCH
AUTHENTIF REQUEST (Rand Nb) AUTHENTIF RESPONSE (Signature) CYPHERING MODE CMD (Algorithm KC) CYPHERING MODE COMPLETE SETUP (Type of Call, data, called party number) CALL PROCEEDING SETUP (for TC) CALL Confirm (TC) PHYSICAL CONTEXT REQUEST PHYSICAL CONTEXT CONFIRM (TA, PC from SDCCH) CHAN ACTIV (open TCH,TA,PC,DTX,cipher) CHAN ACTIV ACK (Level of Interfer, TCH open) ASSIGNMENT CMD (TCH Allocation) BSS Problem= MC14b(B7) ESTABLISH INDICATION (Connection) ASSIGNMENT COMPLETE (Assign. Succ) MC718 (trx) MC703 (Attempt) (MC16 (B6)) MC140b (B8) MC13a T11(5s) DRQuery TCH Choice MC140a (B8)
RSL
N7 - COC
-2SDCCH Phase
Ciphered SDCCH
SDCCH Drop: CLREQ MC138:Radio Pb -RadioInterfaceFail -RadioLinkFail on Abis MC137:BSS Pb -RadioInterfaceFail -O&M Intervention MC07:HO Fail -RadioInterf MessFail ASSIGNMENT REQUEST (TCH Allocation) MC812=C612a,b.. CLREQ:Congest Assign Fail: No Radio Ress Avail MC921c CLREQ: Preempted calls (pci1>pci2) PM Type1: C701a,b,c.. T3107 (14s) MC746b (Expiry) Assign Fail: Radio Interf Fail (Radio Pb) TCNAFLR MC14b Assign Fail: BSS Pb (Abis,Bts/Bsc HWorSw)
-3TCH Assign.
ASSIGNMENT CMD (TA,PC,DTX info,SysInfo6et7) (Ncell BCCH,Arfcn List,LAI,Radio link time out)
FACCH
FACCH
FACCH
R-TCH
ALERTING CONNECT
R-TCH
[Chan Rel + ACK ???]
T-TCH - CIC
PSTN
FACCH
FACCH
-4Alerting Connect
Call Drop: BSS-Syst Problem=14c+739 CONNECT ACK MC717a (Succ int DR) MC717b (Succ int&ext:HO+DR) MC712 (Succ outg int&ext HO) Normal Realease=unknown MC662 (Succ intra HO) RTCH SuccessEnd=718+(717a+717b)-712
Connetion Failure Indication: - Radio link Fail MC736 CLREQ: Radio Interf Fail - Remote TC Fail MC739 CLREQ: Equipment Fail (TC,Wave,BssSw,Hw) BSS Pb Operator: MC14C CLREQ: Radio Interface Fail (O&M Intervention) HO Failure without Reversion: MC621 CLREQ: Radio Interf Message Fail (Drop HO) Preemption: MC921a,b.. CLREQ: Preemption Taxation
FACCH