1. WCDMA General Call Flow

2. WCDMA General Call Flow

General service flow

General call flow of CS

General service procedure ofPS

3. MO Service Flow AS : PLMN Selection , Cell Selection , RRC Connection Setup , Iu Connection Setup MM Procedures of NAS : Attach , Security Functions , Location Management; Start Service : Call Control Procedures of CS , Section Management Procedures of PS ,set up the service bearer MM Procedures of NAS : Detach( include the IMSI Detach, GPRS Detach) AS : RRC Connection Release Switch on Switch off AS :RRC Non Access Stratum:MM/SM/CC/SMS AS : RANAP Iu Connection Release Finish Service: Call Control Procedures of CS , Section Management Procedures of PS, release the service bearer UTRAN CN 4. MT Service Flow AS : RRC Connection Setup MM Procedures of NAS : Security Functions; IDLE State: NAS: Paging Procedure initiated by CN Iu Connection Setup IDLE State: AS : RRC Non Access Stratum: MM/SM/CC/SMS AS : RANAP Start Service : Call Control Procedures of CS , or Section Management Procedures of PS, set up the service bearer AS RRC Connection Release Iu Connection Release Finish Service : Call Control Procedures of CS , or Section Management Procedures of PS, release the service bearer UTRAN CN 5. WCDMA General Call Flow

General service flow

General call flow of CS

General service procedure ofPS

6. UE Call Another UE 1 CM Service request 2 Security Functions 3 Setup 5 Send Routing Information 6 Provide Roaming Number7 Provide Roaming Number Ack 9 Initial Address Message 10 Page Connecting 12 Setup 2 Security Functions 4 Call Proceeding 8 Send Routing Information Ack 11 Security Functions 13 CallConfirm HLR MSC/VLR MSC/VLR MO MT 7. UE Call PSTN 8. PSTN Call UE 9. WCDMA General Call Flow

General service flow

General call flow of CS

General service procedure ofPS

10. AttachProcedure

The CS procedures are similar to the PS in common procedures of Non Access Stratum. The following procedures mainly focus on the PS domain.

1 Attach Req 2 Identification Req/Rsp 3 Identity Req/Rsp 4 Authentication 4 Authentication 6 Update Location 7 Cancel Location / Ack 8 Insert Subscriber Data/Ack 10 Attach Accept 5 IMEI Check 5 IMEI Check 9 Update Location Ack 11 Attach Complete HLR New SGSN Old SGSN EIR 11. Service Request

MS Initiated Service Request Procedure:

1 RRC Connection Setup 2 Service Request 3 Security Functions 3 Security Functions 5 RAB Assignment Req 6 RB Setup/ RB Setup Complete 8 SGSN-initiated PDP Context Modification 9 UE sends Uplink PDU 4 Service Accept 7 RAB Assignment Rsp UTRAN SGSN HLR GGSN 12. Section Management PDP Context Activation

UE-initiated PDP Context Activation Procedure

1 Activate PDP Context Request 3 Invoke Trace 4 Create PDP Context Rsp 5 Activate PDP Context Accept UTRAN SGSN GGSN 2 Radio Access Bearer Setup 4 Create PDP Context Req 13. PDP Context Activation Procedure of the laterR99/R4 version

UE-initiated PDP Context Activation Procedure

1 Activate PDP Context Request 5 Invoke Trace 3 Create PDP Context Rsp 8 Activate PDP Context Accept 7 Update PDP Context Rsp 6 Update PDP Context Req UTRAN SGSN GGSN 4 Radio Access Bearer Setup 2 Create PDP Context Req 14. Section Management PDP Context Modification 1 Update PDP Context Req 2 Update PDP Context Rsp 3 Modify PDP Context Request 4 Modify PDP Context Accept 5 Radio Access Bearer Modification 6 Invoke Trace

SGSN-Initiated PDP Context Modification Procedure

UE UTRAN SGSN GGSN 15. Section Management PDP Context Deactivation 1 Deactivate PDP Context Request 5 Radio Access Bearer Release 3 Delete PDP Context Rsp 4 Deactivate PDP Context Accept

MS Initiated PDP Context Deactivation Procedure

UTRAN SGSN GGSN 2 Delete PDP Context Req 16. Location Management

Routeing Area Update Procedure

New SGSN Old SGSN 1 RAURequest 2 SGSN Context Req/Rsp 3 Security Functions 3 Security Functions 5 Update PDP Context Req 5 Update PDP Context Rsp 6 Update Location 7 Cancel Location 8 Insert Subscriber Data ,Update Location Ack 9 RAU Accept 10 RAU Complete 4 SGSN Context Ack HLR GGSN 17. Detach Procedure

MS-Initiated Detach Procedure

1 Detach Request 2 Delete PDP Context 3 IMSI Detach Indication 4 GPRS Detach Indication 5 Detach Accept 6 Release PS SignalingConnection SGSN GGSN MSC/VLR 18.