Scribd
Upload
121 views4 pages

UE RNC UE RNC: MSC Server

1. The document describes the signaling flow for establishing a circuit switched call between a UE and MSC server via the UTRAN/RNC. 2. It involves RRC connection establishment between the UE and RNC, authentication and security procedures, and setting up the radio access bearer for the circuit switched call. 3. The MSC server is contacted and call setup signaling such as Setup, Call Confirmed, Call Proceeding, Alerting, and Connect messages are exchanged over the radio access bearer to complete the call.

Uploaded by

dilanka isuru jayalath
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOC, PDF, TXT or read online on Scribd
121 views4 pages

UE RNC UE RNC: MSC Server

1. The document describes the signaling flow for establishing a circuit switched call between a UE and MSC server via the UTRAN/RNC. 2. It involves RRC connection establishment between the UE and RNC, authentication and security procedures, and setting up the radio access bearer for the circuit switched call. 3. The MSC server is contacted and call setup signaling such as Setup, Call Confirmed, Call Proceeding, Alerting, and Connect messages are exchanged over the radio access bearer to complete the call.

Uploaded by

dilanka isuru jayalath
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOC, PDF, TXT or read online on Scribd
You are on page 1/ 4

RNC

UE RNC MSC Server


UE

UTRA_Idle

[CCCH] RRC
call request (User)

RRC Connection Request


Initial UE ID = IMSI|TMSI+LAI,
Est.Cause = originating conversational call

[CCCH] RRC RRC Connection Setup


U-RNTI, C-RNTI, signalling radio
bearer RB1..RB4, TrCH
configuration, PhCH configuration,
radio access capability update
requirement
[DCCH] RRC
RRC Connection Setup Complete
UE radio access capabilities

CELL_DCH

[DCCH] RRCInitial Direct Transfer

CN domain = cs, NAS-PDU = MM-


message: CM Service Request Initial UE Message

CN domain = cs, LAI, SAI, RNC-ID,


NAS-PDU = CM Service Request

Direct Transfer
SAPI=0, NAS-PDU =
Authentication Req.
[DCCH] RRCDownlink Direct Transfer
CN domain = cs, NAS-PDU =
MM-
message: Authentication
Request
[DCCH] RRC UplinkDirect Transfer
CN domain = cs, NAS-PDU =
MM- RANAP Direct Transfer
message: Authentication
Response LAI, SAI, NAS-PDU =
Authentication Resp.
RANAPSecurity Mode Command
[DCCH] RRC Security Mode Command permitted UIA, IK,
permitted UEA, CK,
selected UIA, selected UEA,

ciphering activation time,
[DCCH] RRC
Security Mode Complete

Security Mode Complete


RANAP
selected UIA, selected UEA
[DCCH] RRCUplink Direct Transfer
RANAPDirect Transfer
CN domain = cs, NAS-PDU =
CC-message: Setup LAI, SAI, NAS-PDU = Setup UTRA_Idle

RANAP Paging
[PCCH] RRC Paging Type 1

CN domain = cs, LAI, IMSI,


UE-ID = TMSI|IMSI,
TMSI, cause
cause = terminating
conversation call|
terminating cause
unknown
UE RNC MSC Server RNC UE
[CCCH] RRC
RRC Connection Request
Initial UE ID = IMSI|TMSI+LAI,
Est.Cause = Terminating
conversational call

[CCCH] RRC RRC Connection Setup


U-RNTI, C-RNTI, signalling
radio bearer RB1..RB4,
TrCH configuration, PhCH
configuration, radio access
capability update
requirement
RRC Connection
[DCCH] RRC Setup Complete
UE radio access capabilities

CELL_DCH

[DCCH] RRC Initial Direct Transfer


CN domain = cs, NAS-PDU = MM
message: Paging Response
Initial UE Message
RANAP
CN domain = cs, LAI, SAI, RNC-ID,
NAS-PDU = Paging Response
RANAP Direct Transfer

Authentication Req.

[DCCH] RRCDownlink Direct Transfer


CN domain = cs, NAS-PDU =
MM-
message: Authentication
Request
[DCCH] RRC UplinkDirect Transfer
CN domain = cs, NAS-PDU
= MM-message: Authentication
Response

RANAP Direct Transfer

LAI, SAI, NAS-PDU =


Authentication Resp.
RANAP
Security Mode Command
permitted UIA, IK,
permitted UEA, CK,

[DCCH] RRCSecurity Mode Command

selected UIA, selected UEA,


ciphering activation time,

[DCCH] RRC
Security Mode Complete

RANAP selected UIA, selected UEA


Security Mode Complete

RANAPDirect Transfer [DCCH] RRC


Downlink Direct Transfer

LAI, SAI, NAS-PDU = Setup


CN domain = cs,
NAS-PDU = CC-
message: Setup
UE RNC MSC Server RNC UE

Uplink Direct Transfer


[DCCH] RRC
CN domain = cs, NAS-PDU =
RANAP Direct Transfer
CC-message: Call Confirmed
LAI, SAI, NAS-PDU =
Call Confirmed

RANAPDirect Transfer

SAPI=0, NAS-PDU =
Call Proceeding

[DCCH] RRCDownlink Direct Transfer

CN domain = cs, NAS-PDU = CC


-message: Call Proceeding

[DCCH] RRC

RABSetupOrModifyItem [DCCH] RRC


RAB Parameter
[DCCH] RRCRadio Bearer Setup RABSetupOrModifyItem
RAB Parameter
RRC state = CELL_DCH [DCCH] RRC
, RAB to setup radio bearer to Radio Bearer Setup
setup, signalling radio bearer RRC state = CELL_DCH
, transport channels to add, physical , RAB to setup radio bearer to
channel setup, signalling radio bearer
, transport channels to add, physical
[DCCH] RRCRadio Bearer Setup Complete channel

RANAP [DCCH] RRC


RAB Assignment Radio Bearer Setup Complete
Response
successful setup
RANAP
RAB Assignment Response

successful setup

[DCCH] RRCUplink Direct Transfer


CN domain = cs, NAS-PDU =
CC-message: Alerting
RANAPDirect Transfer

LAI, SAI, NAS-PDU = Alerting


RANAPDirect Transfer
SAPI=0, NAS-PDU = Alerting [DCCH] RRCUplink Direct Transfer
[DCCH] RRC
Downlink Direct Transfer CN domain = cs, NAS-PDU =
CC-message: Connect
CN domain = cs, NAS-PDU =
RANAP Direct Transfer
CC-message: Alerting
LAI, SAI, NAS-PDU = Connect
RANAPDirect Transfer

[DCCH] RRC SAPI=0, NAS-PDU = Connect


Downlink Direct Transfer

CN domain = cs, NAS-PDU =


CC-message: Connect
UE RNC MSC Server RNC UE

[DCCH] RRC
Uplinkdirect Transfer

CN domain = cs, NAS-PDU = RANAPDirect Transfer


CC-message: Connection ACK
SAPI=0, NAS-PDU = Connection ACK
RANAPDirect Transfer
[DCCH] RRC
LAI, SAI, NAS-PDU = Downlink Direct Transfer
Connection ACK
LAI, SAI, NAS-PDU =
Connection ACK

call active
[DCCH] RRC
Uplinkdirect Transfer

CN domain = cs, NAS-PDU = RANAPDirect Transfer


CC-message: Disconnect
SAPI=0, NAS-PDU = Disconnect
RANAPDirect Transfer

LAI, SAI, NAS-PDU = [DCCH] RRC


Disconnect Downlink Direct Transfer

CN domain = cs, NAS-PDU =


CC-message: Disconnect
[DCCH] RRC
Uplink Direct Transfer
CN domain = cs, NAS-PDU =
CC-message: Release
RANAP Direct Transfer
RANAPDirect Transfer
Down linkdirect Transfer
LAI, SAI, NAS-PDU =
SAPI=0, NAS-PDU = ReleaseRelease
CN domain = cs, NAS-PDU =
CC-message: Release

[DCCH] RRC
Uplinkdirect Transfer
CN domain = cs, NAS-PDU = RANAPDirect Transfer
CC-message: Release completeSAPI=0, NAS-PDU = Release complete
RANAPDirect Transfer

LAI, SAI, NAS-PDU = [DCCH] RRC


Release complete Downlink Direct Transfer
CN domain = cs, NAS-PDU =
CC-message: Release complete
RANAP
Iu Release Command RANAP
Iu Release Command
cause = normal event
[DCCH] RRC cause = normal event
RRC Connection Release [DCCH] RRC
RRC Connection Release
cause = normal event
cause = normal event
[DCCH] RRC
RRC Connection Release CompleteRANAP [DCCH] RRC
Iu Release Complete RRC Connection Release Complete
RANAP
released RAB Iu Release Complete

released RAB
UTRA_Idle UTRA_Idle

You might also like