attach

UENodeBSRNCMSC/VLR

:RRCConnReq

pReq

pRsp

f

:RRCConnSetup

:RRCConnSetupComplete

:InitialDirectTransfer

11.I

nit

ial

UEM

sg(

Loca

tio

n

Upda

te

Req)

12.

D

ir

e

ct

T

ra

n

sf

er

(a

u

th

en

ti

ca

t

io

n

re

q

)

:DLDirectTransfer

:DLDirectTransfer

:InitialDirectTransfer

SGSN

itialUE

Msg(Att

achReq)

Trans

fer(IdentityReq)

:ULDirectTransfer

rect

Trans

fer(I

denti

tyR

sp)

UENodeBSRNCMSC/VLR

:Seruritymodecomplete

Transfer(authenticationand

ciheringrsp)

SGSN

tymodecommand

tymodecomplete

:Seruritymodecommand

md

oplete

:Seruritymodcomplete

tymodcmd

tymodcomplete

:Seruritymodcmd

Transfer(Location

updateAccept)

:DLDirectTransfer

:DLDirectTransfer

非联合模式ATTACH过程

基本过程说明：

信令1～9，建立好RRC信令连接，建立空口和IUB口信令通道；

信令10～27，完成CS域的注册，包括CS域鉴权和安全模式过程，然后释放CS域的IU口信令链接；

信令28～45，完成PS域的注册，包括PS域鉴权和安全模式过程，然后释放PS域的IU口信令链接和

RRC连接。

联合模式ATTACH过程

UENodeBSRNCMSC/VLR

:RrcConnRel

:RrcConnRelComplete

eq

sp

45.

Rel

Co

mple

te

SGSN

:DLDirectTransfer

:ULDirectTransfer

Transfer(attachaccept)

Transfer(attachcomplete)

md

oplete

UENodeBSRNCMSC/VLR

:RRCConnReq

pReq

pRsp

f

:RRCConnSetup

:RRCConnSetupComplete

:InitialDirectTransfer

lUEMsg(AttachReq)

:DLDirectTransfer

SGSN

Transfer(IDReq)

12.L

oca

tio

nUp

dat

eR

eq

onUpdateAccept

ID

:ULDirectTransfer

Transfer(IDRsp)

非联合模式DETACH

UENodeBSRNCMSC/VLR

:RrcConnRel

:RrcConnRelComplete

eq

sp

plete

ID

SGSN

:ULDirectTransfer

Transfer(IDRsp)

Transfer(autentiand

cipherreq)

:DLDirectTransfer

:Seruritymodcomplete

tymodcmd

tymodcomplete

:Seruritymodcmd

:DLDirectTransfer

:DLDirectTransfer

Transfer(attachaccept)

30.

Direc

tTra

nsfer

(att

achc

omple

te)

md

oplete

:ULDirectTransfer

Transfer(authentication

andciheringrsp)

UENodeBSRNCMSC/VLR

:RRCConnReq

pReq

pRsp

f

:RRCConnSetup

:RRCConnSetupComplete

:InitialDirectTransfer

lUE

Msg(IMSIdetachInd)

md

SGSN

oplete

联合模式DETACH

UENodeBSRNCMSC/VLR

:RrcConnRel

:RrcConnRelComplete

eq

sp

plete

SGSN

ID

:InitialDirectTransfer

lUEMsg(DetachReq)

md

oplete

oplete

UENodeB

SRNC

MSC/VLR

:RRCConnReq

2.R

LS

etup

Re

q

pRsp

f

:RRCConnSetup

9.

DCC

H:RR

CCo

nnS

etup

Com

plet

e

1

0.

DC

CH

:I

ni

ti

al

D

ir

ec

t

Tr

an

sf

er

:RrcConnRel

:RrcConnRelComplete

19.

RL

Del

Req

sp

plete

SGSN

ID

:InitialDirectTransfer

lUEMsg(DetachReq)

md

oplete

lUEMsg

(IMSIdetachInd)