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UMTS Procedure Examples

Guoyou He

T-110.498 Special Course in data communications and networks

Spring 2003

Agenda

Elementary Procedures

RRM Procedure Examples

MM Procedure Examples

CC Procedure Example

Packet Data Example

IMS Prodecure Example

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Elementary Procedures (1/8)

Paging

RRC Connection Set-up

Trasaction Reasoning

Authentication and Security

Transaction Set-up with RAB Allocation

Tansaction

Transaction Clearing and RAB Release

RRC Connection Release

Elementary Procedures (2/8)

Paging and RRC Connection Setup

Core Network

Domain

(S)RNCBS

UE

Uu Iub Iu

RANAP: Paging[The requesting CN domain, IMSI, etc.]RRC: Paging Type 1[Radio Network Temporary I dentity (RNTI)]

RRC: Connection Request[IMSI / TMSI, IMEI, LA Id, RA Id, Reason for the

radio connection ]

NBAP: RL Setup[Transport format

description, power control info, code info]NBAP: RL Setup Response[Transport

Layer Addressing In fo, Reference Info]

Iub Bearer Establishment

FP: Downlink Synch.

FP: Uplink Synch.

RRC: Connection Setup[Transport format, Power control, codes]

RRC: Connection Setup Complete

RANAP: Paging[The requesting CN domain, IMSI]RRC: Paging Type 2[Radio Network Temporary I dentity (RNTI)]

RRC

Connection

Setup

Active Connection

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Elementary Procedures (3/8)

Transaction Reasoning, Authentication and Security Control

MSC/VLR(S)RNC

BSUE

Uu Iub Iu

RANAP: UE Initial Message[TMSI/IMSI, Current LA of

UE, The Kind of Transaction Requested)]RRC: Initial Direct Transfer (MM, GMM,CC, etc.)

RRC: Direct Transfer (Authentication Request)

RRC: Direct Transfer (Authentication Response)

RANAP: Security Mode Command[Selected Security

Algorithms, Integrity and Encryption Keys].

RANAP::Direct Transfer (Authentication Response).

RRC: Security Mode Command[Commands the UE to start encrypting the transaction

with the corresponding keys and algorithms]

RRC: Security Mode Complete (Indicates that UE has successfully turned on the

selected integrity protection and encryption algorithms in this transaction)

RANAP: Security Mode Complete

Transaction

Reasoning

SGSN

RANAP: Direct Transfer (Authentication Request)

Authentication

and Security

Control

Elementary Procedures (4/8)

Transaction Set-up with RAB Allocation, Transaction,

Transaction Clearing with RAB Release (Circuit Switched)

MSC/VLR(S)RNC

BSUE

Uu Iub Iu

RANAP: Direct Transfer(CC: Setup[TransactionId,

StreamId, Traffic class,AsymmetryId, Max bitrate,

Guaranteedbitrate])

RRC: Direct Transfer (CC: Setup[TransactionId, StreamId, Traffic class, AsymmetryId,

Max bitrate, Guaranteed bitrate])

RRC: Radio Bearer Setup

RANAP: RAB Assignment Response

RRC: Radio Bearer Setup Complete

RRC: Direct Transfer (CC: Call Proceeding)RANAP: Direct Transfer (CC: Call Proceeding)

RANAP: RAB Assignment Request [Unique RAB ID,

QoS Parameters]

Radio Bearer Establishment

Iu CS Bearer Establishment

Further Procedures for User Plane Connection and User Data Flow Established and Carried Between Parties

Transaction

Setup with

RAB

Allocation

Transaction

Transaction

Clearing with

RAB Release

RRC: Direct Transfer (CC: Disconnect)RANAP: Direct Transfer (CC: Disconnect)

RANAP: Direct Transfer (CC: Release)RRC: Direct Transfer (CC: Release)

RRC: Direct Transfer (CC: Rel. Complete)RANAP: Direct Transfer (CC: Rel.. Complete)

RANAP: RAB Assignment Request (Release)RRC: Radi o Bearer Release

RRC: Radio Bearer Release CompleteRANAP: RAB Assignment Response (Release)

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Elementary Procedures (5/8)

Transaction Set-up with RAB Allocation, Transaction,

Transaction Clearing with Iu Release (Circuit Switched)

MSC/VLR(S)RNC

BSUE

Uu Iub Iu

RANAP Direct Transfer(CC: Setup[TransactionId,

StreamId, Traffic class,AsymmetryId, Max bitrate,

Guaranteedbitrate])

RRC: Direct Transfer (CC: Setup[TransactionId, StreamId, Traffic class, AsymmetryId,

Max bitrate, Guaranteed bitrate])

RRC: Radio Bearer Setup

RANAP: RAB Assignment ResponseRRC: Radio Bearer Setup Complete

RRC: Direct Transfer (CC: Call Proceeding)RANAP: Direct Transfer (CC: Call Proceeding)

RANAP: RAB Assignment Request [Unique RAB ID,

QoS Parameters]

Radio Bearer Establishment

Iu CS Bearer Establishment

Further Procedures for User Plane Connection and User Data Flow Established and Carried Between Parties

Transaction

Setup with

RAB

Allocation

Transaction

Transaction

Clearing with

Iu Release

RRC: Direct Transfer (CC: Disconnect)

RANAP: Direct Transfer (CC: Disconnect)

RANAP: Direct Transfer (CC: Release)RRC: Direct Transfer (CC: Release)

RRC: Direct Transfer (CC: Rel. Complete)RANAP: Direct Transfer (CC: Rel.. Complete)

RANAP: Iu Release CommandRRC: Radi o Bearer Release

RRC: Radio Bearer Release Complete

RANAP: Iu Release CompleteClearing RRC Connection

Elementary Procedures (6/8)

Transaction Set-up with RAB Allocation, Transaction,

Transaction Clearing with RAB Release (Packet Switched)

SGSN(S)RNC

BSUE

Uu Iub Iu

RANAP Direct Transfer(SM: Active PDP Context

Request)

RRC: Direct Transfer (SM: Active PDP Context Request)

RRC: Radio Bearer Setup

RANAP: RAB Assignment Response

RRC: Radio Bearer Setup Complete

RRC: Direct Transfer (SM: Active PDP Context Accept)RANAP: Direct Transfer (SM: Active PDP Co ntext Accept)

RANAP: RAB Assignment Request [Unique RAB ID,

QoS Parameters (Guaranteed bitrate)]

Radio Bearer Establishment

Iu PS Bearer Establishment

Exchanging Packet Switched Data between the UE and the CN Domain

Transaction

Setup with

RAB

Allocation

Transaction

Transaction

Clearing with

RAB Release

RRC: Direct Transfer (SM: Deactivate PDP Context Request)RANAP: Direct Transfer (SM: Deactivate PDP Context Req.)

RANAP: RAB Assignment Request (Release)RRC: Radi o Bearer Release

RRC: Radio Bearer Release CompleteRANAP: RAB Assignment Response (Release)

RANAP: Direct Transfer (SM: Deactivate PDP Context

Accept)RRC: Direct Transfer (SM: Deactivate PDP Context Accept)

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Elementary Procedures (7/8)

Transaction Set-up with RAB Allocation, Transaction,

Transaction Clearing with Iu Release (Packet Switched)

SGSN(S)RNC

BSUE

Uu Iub Iu

RANAP Direct Transfer(SM: Active PDP Context

Request)

RRC: Direct Transfer (SM: Active PDP Context Request)

RRC: Radio Bearer Setup

RANAP: RAB Assignment ResponseRRC: Radio Bearer Setup Complete

RRC: Direct Transfer (SM: Active PDP Context Accept)RANAP: Direct Transfer (SM: Active PDP Co ntext Accept)

RANAP: RAB Assignment Request [Unique RAB ID,

QoS Parameters (Guaranteed bitrate)]

Radio Bearer Establishment

Iu PS Bearer Establishment

Exchanging Packet Switched Data between the UE and the CN Domain

Transaction

Setup with

RAB

Allocation

Transaction

Transaction

Clearing with

Iu Release

RRC: Direct Transfer (SM: Deactivate PDP Context Request)RANAP: Direct Transfer (SM: Deactivate PDP Context Req.)

RANAP: Direct Transfer (SM: Deactivate PDP Context

Accept)RRC: Direct Transfer (SM: Deactivate PDP Context Accept)

RRC: Radio Bearer ReleaseRANAP: Iu Release Command

RANAP: Iu Release Complete

RRC: Radi o Bearer Release Complete

Clearing of RRC Connection

Elementary Procedures (8/8)

RRC Connection Release

(S)RNCBSUE

UuIub

RRC: Connection Release

RRC: Connection Release Complete

NBAP: RL Deletion

NBAP:RL Deletion Response

Iub Bearer Release

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RRM Procedure Examples (1/5)

Soft Handover Link Addition and Link

Deletion

SRNS Relocation Circuit Switched

Inter-System Handover from UMTS to

GSM Circuit Switched

RRM Procedure Examples (2/5)

Soft Handover Link Addition

SRNCBS 1UE

UuIub

RRC: Measurement Report (Measurements of Intra-frequency, Inter-frequency, Inter-system, Traffic volume, Quality, Internal)

RNSAP: RL Setup Req.

NBAP: RL Setup Response

BS 2 DRNC

IurIubUu

NBAP: RL Setup.

RNSAP: RL Setup Response

Iub Bearer Setup Iur Bearer Setup

FP Downlink Synchronization

FP Uplink Synchronization

RRC: Active Set Update (RL Addition: A new radio link has been added to the active set of the connection, which can be taken into use)

RRC: Active Set Update Complete

UE has a service (RRC conn ection with the UTRAN exists and is active)

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Soft Handover Link Deletion

RRM Procedure Examples (3/5)SRNCBS 1UE

Uu Iub

RRC: Measurement Report

RNSAP: RL Deletion Request

NBAP: RL Deletion Response

BS 2 DRNC

IurIubUu

NBAP: RL Deletion Request

RNSAP: RL Deletion Response

Iub Bearer Release Iur Bearer Release

RRC: Active Set Update (RL Deletion of BS 2: Indicates the radio connection to be removed)

RRC: Active Set Update Complete

The transaction is going on and the UE moves

RRM Procedure Examples (4/5)

SRNS Relocation Circuit Switched (UE not involved)

RNC 2UE

RANAP: Relocation Required [Reason,

Target RNS ID, UE Classmark Info.]

RANAP: Relocation Command

RANAP: Relocation Request Ack.

(Optional) RNSAP: SRNC Relocation Commit

RANAP: Iu Release Command

MSC/VLR

RANAP: Relocation Request

RNC 1

User Data Flow through RNC 1

Data Forwarding

RNC 1 RNC 2

RRC Procedures

RANAP: Relocation Complete

RANAP: Iu Release Complete

User Data Flow through RNC 2

RANAP: Relocation Detect

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RRM Procedure Examples (5/5)

Inter-System Handover from UMTS to GSM circuit switched

BSC

RANAP: Relocation Required[Reason,

Cell Global ID, UE Classmark Info.]

BSSMAP: HandOverRequired Ack..

BSSMAP: TCH Assign Cmd

GSM RR: Physical Info[Info. for Starting to Use the GSM RadioAccess, Channel Decription, etc.]

MSC/VLR

BSSMAP: HandOver Required

User Data Flow through RNC

BSSMAP: HandOver Detect

User Data Flow through GSM BSC

TCH Allocation

RANAP: Relocation Command

UERNC

RRC: Measurement Report

RRC: Handover from UTRAN Command

[Target System, Additional Info. for HO]

GSM RR: Handover Access

GSM RR: Handover Complete

BSSMAP: HandOverCompleteRANAP: Iu Release Command

RANAP: Iu Release Complete

RRC: URA Update

RRC: URA Update Confirm

MM Procedure Examples (1/3)

Cell Update and URA Update

UE RNC

RRC: Cell Update

RRC: Cell Update Confirm

Information exchange between UE and RNC

Information exchange between UE and RNC

Cell

Update

URA

Update

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MM Procedure Examples (2/3)

Location Update to the CN CS Domain

RNCUE

RRC Initial Direct Transfer (MM: LU

Request[Old LA Id, New LA Id, TMSI])

MAP Update Location

MAP Insert Subscriber

Data[Subscriber Profile, Serv. Info.]

Authentication and Security

New

MSC/VLR

Old

MSC/VLRAuC/HLR

RRC Connection Setup

MAP Cancel Location

RANAP UE Initial Message (MM: LU

Request[Old LA Id, New LA Id, TMSI]) MAP Send Parameters(Fetch Sec. Param.)

MAP Send Parameters(Sec. Param.)

MAP Cancel Location Ack.

MAP Insert Subscriber Data Ack.

MAP Update Location Ack.RANAP Direct Transfer (MM: LU

Accept [New TMSI])RRC Direct Transfer (MM: LU

Accept [New TMSI])

RRC Direct Transfer (MM:

Ack(TMSI Realloc. Complete))RANAP Direct Transfer (MM:

Ack(TMSI Realloc. Complete))

RANAP Iu Release Command

RRC Connection ReleaseRANAP Iu Release Complete

MM Procedure Examples (3/3)

Routing Area Update to the CN PS Domain

AuC/HLRRNCUE

GTP-C: SGSN Ctxt

Req.(Request Subscriber Info.)

RRC Initial Direct

Transfer(GMM: RAU

Request[Old and New RA ID])

RANAP UE Initial Massage

(GMM: RAU Request[Old

and New RA ID])

MAP Send Parameters (Subscribers Authentication Vectors)

MAP Send Parameters(Ask for Sub scribers Authentication Vectors)

MAP Update Location

GTP-C: Update PDP Context Response

GTP-C: SGSN Ctxt Resp.

(Subscriber Info.)

New SGSN Old SGSN GGSN

RRC Connection Setup

Au th en ticat io n a nd Secu ri ty G TP-C : U pda te PD P C on tex t Re qu est (T o I nfo rm tha t SG SN and

PDP Ctxt Have Been Changed)

MAP Cancel Location

MAP Cancel Location Ack.

MAP Insert Subscriber Data (Transfer Sub scriber Profile)

MAP Insert Subscriber Data Ack.

MAP Update Location Ack.

RANAP Direct Transfer

(GMM: RAU Accepted [New

P-TMSI])RRC Direct Transfer (GMM:

RAU Accepted [New P-TMSI])

RRC Direct Transfer (GMM:

Ack[P-TMSI Realoc.

Complete])

RANAP Direct Transfer

(GMM: Ack[P-TMSI

Realloc. Complete])

RANAP Iu Release Cmd

RRC Connection ReleaseRANAP Iu Release Complete

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IMS Procedure Example (1/2)

UTRAN

GERAN

PS CN

SGSN GGSN

HSS

CS CN

MSC

Server

GMSC

Server

MGW MGW

IMS CN

MGW

MGCF

BGCFS-CSCF

I-CSCF

P-CSCF

Iinternet &Corporate IP

PSTN/ISDN

BSC

RNCBS

BTS

IMS Procedure Example (2/2)

P-CSCF Discovery Using PDP Context Activation Signaling

Registration Information Flow User Not Registered

GGSNSGSNUE

Active PDP Context Request

(Ask for P-CSCF IP Addr.)

Create PDP Context ResponseActivate PDP Context Accept

Get IP Address(es)

of P-CSCF(s)

P-CSCF I-CSCF HSS S-CSCF

Initiate Communication towards IMS and Gain Signalling Channel

Register [P-CSCF addr.,

Public User ID, PrivateUser ID, P-CSCS

Network ID, UE IP

Addr.]

Cx-Query [Public User ID,

Private User ID, P-CSCF

Network ID]Cx-Query Resp.[(S_CSCF

name), S-CSCCF Capability]

Cx-Select-pull [Pub. User ID, Priv. User ID]

Cx-Select-pull Resp [S-CSCF Name & capability]

Register [P-CSCF, addr./name, Pub. User ID, Priv. User

ID, P-CSCF Net. ID, UE IP addr.]Cx-put [Pub. User ID, Priv. User ID, S_CSCF name]

Cx-put Resp.

Cx-pull [Pub. User ID, Priv. User ID]

Cx-pull Resp.[User Info. ]

Service Control.

200 OK (Home network contact info.)

200 OK (Home Network

Contact Info.[Encrypted

S_CSCF Addr.])200 OK (Home network contact Info.)

Visited Network Home Network

Create PDP Context Request

P-CSCF

Discovery

Register [Public User ID, Private User ID, Home Network Domain Name, UE IP Addr.]

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Summary

The presented UMTS procedures are only

some examples, it does not cover all the

procedures in UMTS.

The basic procedures are used in other

procedures.

IMS procedures are not covered by the

basic procedures.

Reference

Kaaranen Heikki, etc. Architecture,

Mobility and Services, John Wiley & Sons

Ltd, England, 2001

3GPP TS 23.228 v5.8.9 IP Multimedia

Subsystem (IMS), 2003-03

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Thank You!

UMTS Protocols (Control Plane) Control Plane (Signaling Plane)

TE

PPP

L1

PPP

L1

MT UTRAN

SM/GMM

RRC

RLC

MAC

Radio

RRC

RLC

MAC

Radio

RANAP

SCCP

MTP3

AAL5

ATM

Replay

ATM

switch

ATMARP

server

AAL5

ATM

ATMARP

server

SM/GMM

RANAP

SCCP

MTP3

AAL5

ATM

GTP-C

UDP

IP

IPOA

AAL5

ATM

SGSNGGSN

GTP-C

UDP

IP

IPOA

AAL5

ATM

BSSAP+/MAPTCAP

SCCP

MTP3

MTP2

E1

DHCP/RADIUS

UDP

IP

802.3

FE

GGSN

MSC_VLR/HLR

DHCP/RADIUS

UDP

IP

L2(802.3)

L1(FE)

ISP

MAP

TCAP

SCCP

MTP3

MTP2(SAAL)

E1(ATM)

GGSNHLR

MAP

TCAP

SCCP

MTP3

MTP2(SAAL)

E1(ATM)

SGSNHLR

BSSAP+

TCAP

SCCP

MTP3

MTP2(SAAL)

E1(ATM)

SGSNMSC_HLRSM: Session managementGMM: GPRS mobility managementRRC: Radio resource controlRLC: Radio Link ControlMAC: Medium Access ControlRANAP: Radio Access NetworkApplication ProtocolSCCP: Signaling ConnectionControl PartMTP3/2: Message Transfer Part 3/2PDCP: Packet Data ConvergenceProtocol

SAAL: Siganaling ATM adaptationlayerAAL5: ATM adaptation layer 5GTP-C/U: GPRS TunnelingProtocol-Control/UserIPoA: IP over ATMUDP: User Datagram ProtocolBSSAP: Base Station SystemGPRS Application PartMAP: Mobile Application PartTCAP: Transaction CapabilitiesApplication PartPPP: Point to Point Protocol

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UMTS Protocols (User Plane)

User Plane (Traffic Plane)

TE

IP

PPP

L1

MT UTRANATM

switch

ATMARP

server

AAL5

ATM

ATM

ARP

server

SGSNGGSN

IP

GTP-UUDP

IP

IPOA

AAL5

ATM

IPinIP

IP

802.3

FE

GGSN

Application

IPinIP

IP

L2

L1

ISP

Relay

GTP-UUDP

IP

IPOA

AAL5

ATM

GTP-UUDP

IP

IPOA

AAL5

ATM

Relay

GTP-UUDP

IP

IPOA

AAL5

ATM

PDCP

RLC

MAC

Radio

Relay

PPP

L1

PDCP

RLC

MAC

Radio

Relay

Application