Wcdma General Call Flow

WCDMA General Call Flow


General service flow General call flow of CS General service procedure of PS

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MO Service FlowNon Access Stratum : MM/SM/CC/SMS AS :RRC UTRAN Switch on AS : RANAP CN

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 Finish Service : Call Control Procedures of CS , Section Management Procedures of PS, release the service bearerMM Procedures of NAS : Detach ( include the IMSI Detach, GPRS Detach ) Iu Connection Release 3

Switch off

AS : RRC Connection Release


MT Service FlowNon Access Stratum : MM/SM/CC/SMS AS : RRC UTRAN IDLE State:NAS: Paging Procedure initiated by CN AS : RRC Connection Setup Iu Connection Setup

AS : RANAP CN

MM Procedures of NAS : Security Functions;

Start Service : Call Control Procedures of CS , or Section Management Procedures of PS, set up the service bearerFinish Service : Call Control Procedures of CS , or Section Management Procedures of PS, release the service bearer

IDLE State:

ASRRC Connection Release

Iu Connection Release


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5

UE Call Another UE

2Security Functions

HLR

6Provide Roaming Number

5Send Routing Information8Send Routing Information Ack

7Provide Roaming Number Ack

10Page 1CM Service request 9Initial Address Message 11Security Functions 2Security Functions 12Setup 3Setup 13Call Confirm 4Call Proceeding MO MT MSC/VLR MSC/VLR Connecting


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UE Call PSTNR NC Initial UE Message (cm service request) S CCP : CC Authentication and S ecurity Procedure Direct Transfer ( setup ) Direct Transfer( call proceeding ) RAB Assignment Procedure Direct Transfer( alerting) Direct Transfer( connect ) Direct Transfer( connect ack ) Connecting Direct Transfer ( disconnect : PS hang up first ) TN Direct Transfer ( release ) Direct Transfer ( release complete ) Iu release/ S CCP release R LG CBK CLF ACM MS VLR C/ PS TN

IAM

ANC(ANN)


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PSTN Call UER NC VMS C GMS CIAMMAP_S ND_R E OUTING_INFO.

HLR

PS TN

MAP_PR OVIDE OAMING_NUM. _RMAP_PR OVIDE OAMING_NUM ACK. _R

PagingInitial UE Message (paging response) S CCP : CC Authentication and S ceurity procedure Direct Transfer ( setup ) Direct Transfer( call confiremed )

IAM

MAP_S ND_ROUTING_INFO ACK. E

RAB Assignment ProcedureDirect Transfer( alerting) Direct Transfer( connect ) Direct Transfer( connect ack ) Connecting Direct Transfer ( disconnect : UE hang up first ) Direct Transfer ( release ) Direct Transfer ( release complete ) Iu release/ S CCP release RLG CLF ACM ANC(ANN)


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Attach Procedure

The CS procedures are similar to the PS in common procedures of Non Access Stratum. The following procedures mainly focus on the PS domain.Old SGSN 7Cancel Location / Ack 2Identification Req/Rsp 1Attach Req3Identity Req/Rsp 4Authentication 5IMEI Check 10Attach Accept 11Attach Complete

4Authentication 6Update Location 8Insert Subscriber Data/Ack 9Update Location Ack HLR New SGSN5IMEI Check

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Service Request

MS Initiated Service Request Procedure :

HLR 3Security Functions1RRC Connection Setup 2Service Request 3Security Functions 4Service Accept 6RB Setup/ 5RAB Assignment Req SGSN RB Setup Complete UTRAN 7RAB Assignment Rsp 9UE sends Uplink PDU 8SGSN-initiated PDP Context Modification

GGSN


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Section Management PDP Context Activation

UE-initiated PDP Context Activation Procedure

1Activate PDP Context Request 2Radio Access Bearer Setup 3Invoke Trace 5Activate PDP Context Accept 4Create PDP Context Req 4Create PDP Context Rsp SGSN GGSN

UTRAN


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PDP Context Activation Procedure of the later R99/R4 versionUE-initiated PDP Context Activation Procedure

1Activate PDP Context Request

2Create PDP Context Req3Create PDP Context Rsp 6Update PDP Context Req

4Radio Access Bearer Setup 5Invoke Trace 8Activate PDP Context AcceptUTRAN

7Update PDP Context Rsp GGSN SGSN


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Section Management PDP Context Modification

SGSN-Initiated PDP Context Modification Procedure

3Modify PDP Context Request 4Modify PDP Context Accept 5Radio Access Bearer Modification 6Invoke Trace UE

1Update PDP Context Req 2Update PDP Context Rsp SGSN GGSN

UTRAN


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Section ManagementPDP Context Deactivation

MS Initiated PDP Context Deactivation Procedure

1Deactivate PDP Context Request

2Delete PDP Context Req 3Delete PDP Context Rsp SGSN GGSN

4Deactivate PDP Context Accept 5Radio Access Bearer ReleaseUTRAN


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Location Management

Routeing Area Update Procedure7Cancel Location3Security Functions

Old SGSN 2SGSN Context Req/Rsp 4SGSN Context Ack

HLR

6Update Location 8Insert Subscriber Data , Update Location Ack 5Update PDP Context Req 5Update PDP Context Rsp GGSN

1RAU Request 3Security Functions9RAU Accept

10RAU Complete New SGSN


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Detach Procedure

MS-Initiated Detach Procedure

3IMSI Detach Indication MSC/VLR 4GPRS Detach Indication

1Detach Request5Detach Accept 6Release PS Signaling Connection SGSN

2Delete PDP Context

GGSN


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Wcdma General Call Flow

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