S09 3G RPLS2_v2-0 UTRAN Control Protocol

8/13/2019 S09 3G RPLS2_v2-0 UTRAN Control Protocol

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1 NOKIA topic: UTRAN Control Protocfol Overview/ July 2003 /Markus Wimmer

UTRAN Control Protocol Overviewwithout RRC)


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Objectives

At the end of this module, you will be able to

Outline the RANAP, NBAP, and RNSAP services

Explain the S-RNC Relocation flow

Understand the structure of call setup flows


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UTRAN Specific Signalling and Control Protocols

3G-MSC/VLR

3G-SGSN

UE Node B RNC

RNC

RNS

RNS

RRC

Iur: RNSAP


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Part IRANAP


5/275 NOKIA topic: UTRAN Control Protocfol Overview/ July 2003 /Markus Wimmer

RANAP Services

3G-MSC/VLR

3G-SGSN

RNC

UTRAN CN

S-RNC Relocation

RAB Management

NAS PDU Transport

Location Reporting

PagingIu Signalling Connection

Management



RANAP: Elementary Procedures

Class 1:

EP with response

RequestResponse ack/unack)

timer

timeoutimplicit negative acknowledgement

Class 2:

EP with no response

Request

Class 3:

EP with multiple responses

RequestResponse ack/unack)

timer

timeoutimplicit negative acknowledgement

Response ack/unack)Response ack/unack)



Example Flow: Paging

3G-MSC/VLR

RNCLA

Cell 3

Cell 2

Cell 1

RNC

Message Type

Temporary UE IdentityPaging Area IDPaging Cause

Non Searching IndicationDRX Cycle Length

Coefficient

Permanent NAS UE IdentityCN Domain Indicator

CS domain/ PS domain

TMSI / P-TMSI

IMSI

LAI / RAI

Terminating Conversational Call / ... /

Terminating High Priority Signalling

non-searching / searching

6 .. 9

Class 1:

EP with response


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Example Flow: NAS Signalling EstablishmentRNC[RLC-TR, CCCH] RRC Connection Request

RRC Connection Setup [RLC-UM, CCCH]

[RLC-AM, DCCH] RRC Connection Setup Complete

MSC/VLRor SGSN

[RLC-AM, DCCH] Initial Direct Transfer Initial UE Message )

RRC ConnectionEstablishment

Message Type

RAC

NAS-PDU

Global RNC-ID

Iu Signalling ConnectionIdentifier

LAICN Domain Indicator

SAIbit string (24 bits)

(most significant bit (MSB) identifies the node

(RNC/CN node) that has assigned this value)

PLMN Identity + RNC ID

Class 1:

EP with response


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Example Flow: RAB Assignment

RNCMSC/VLRor SGSN

RAB Assignment Request )AC

Bearer setup/modification/release AALx link setup/modification/release

RAB Assignment Response )

RABs To Be SetupOr Modified List

RABs To BeReleased List

First Setup OrModify Item

Second Setup OrModify ItemRAB Parameters

User PlaneInformation

RAB IDNAS Synchroni-sation Indicator

Transport LayerInformation

Traffic Class

RAB Asymmetry Indicator

Maximum Bit Rate

Guaranteed Bit Rate Delivery Order

Maximum SDU Size

SDU parameters Transfer Delay

Traffic Handling Priority

Allocation/Retention priority Source Statistics Descriptor

Class 3 EP


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Example Flow: RAB AssignmentRNC

MSC/VLRor SGSN

RAB Assignment Request )AC

Bearer setup/modification/release AALx link setup/modification/release

RAB Assignment Response )

RABs SetupOr Modified List

RABsReleased List

RABsQueued List

RABs Failed to Set-up Or Modify ListRABs Failed to

Release List

RAB ID

Cause

Radio NetworkLayer CauseTransport Layer

CauseNASCause

ProtocolCause

MiscellaneousCause

Non-standardCause

e.g. 23:Invalid RAB

ParameterCombination

e.g. 98:SemanticError


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Example Flow: S-RNC RelocationsourceRNC

CN Iuedge node targetRNC

Relocation Required

TRO

1): TRELOCalloc

Relocation Request

2): TRELOCcomplete

Relocation Request Acknowledge

TRO

Relocation Command(1)

(2)

RNSAP:Relocation CommitRelocation Detect RRC: UTRANMobility Information

RRC: UTRAN Mobility InformationConfirm

Relocation CompleteIu Release CommandIu Release Complete


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Nokia Parameters for S-RNC Relocation Timer RNC: TRelocPrep

Specifies the maximum time for Relocation Preparation procedure in the source RNC. The timer is set when a

RANAP:Relocation Required message is sent. The timer is stopped when a RANAP:Relocation Command or a

Relocation Preparation Failure message is received.

[1 ... 16] seconds, step 1 second; default value: 6 seconds

RNC: TRelocOverallSpecifies the maximum time for the protection of overall Relocation procedure in the source RNC. The timer is set in

the source RNC when a RANAP:Relocation Command message is received. The timer is stopped when a RANAP:IuRelease Command is received, or the relocation procedure is cancelled. The timer is set in the target RNC when a

RANAP:Relocation Request Acknowledge message is sent. The timer is stopped when a RANAP:Relocation Complete

message is sent, or the relocation procedure is cancelled.

[1 ... 16] seconds, step 1 second; default value: 8 seconds


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Part IIRNSAP


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RNSAP Services

RNC UTRAN

Relocation ExecutionRadio Link Management

Compressed Mode Control

CCCH Signalling Transfer Paging

Measurements on

dedicated resources

RNCNS RNS

Class 1:

EP with response

Class 2:

EP with no response

PhyCH reconfiguration

etc.

CTCH resource management


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NAS-PDUSAPI

CN Domain Indicator

NAS-PDUSAPI

CN Domain Indicator

Flow Example: Relocation CommitsourceRNC

targetRNCelocation Commit )

Message Type

RANAP RelocationInformation

D-RNTITransaction ID

Direct TransferInformation Items

NAS-PDUSAPI

CN Domain Indicator

RAB Context Items

NAS-PDUSAPI

CN Domain Indicator

NAS-PDUSAPI

CN Domain Indicator

RAB IDDL GTP-PDU SeqNoUL GTP-PDU SeqNoCN Domain IndicatorN Domain IndicatorL N-PDU SeqNoCN Domain IndicatorN Domain IndicatorL N-PDU SeqNo

OP

OP

1 .. maxnoofDT (15)

1 .. maxnoofRABs (256)

Class 2:

EP with no response


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Flow Example: Radio Link Setup

sourceRNC targetRNC

Radio Link Setup Request )Radio Link Setup Response

Radio Link Setup RequestRadio Link Setup Failure

Message Type

D-RNTI

Transaction ID

S-RNTISRNC-Id

RL Information IEs

UL DPCHInformation IEs

DL DPCHInformation IEs

DSCH InformationDCH Information

Transmission GapPattern Sequence

InformationActive PatternSequence Info

Permanent NASUE Identity

Class 1:

EP with response


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Some Nokia Parameters RNC: IurItem

This parameter consists of all the needed information from the neighbour RNC.

RNC: IurListThis parameter is a collection of Iur-interfaces related to one RNC.

RNC: IurItemThis parameter indicates a user plane procedure support of the Iur connection. This information is given separately

for each neighbouring RNC. If the user plane is not supported between SRNC and DRNC, initiation of a softhandover procedure is not possible.

0 (Not supported), 1 (Supported); default: 1

etc.


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Part IIINBAP


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NBAP ServicesRadio Link MgtCell Configuration Mgt

DL Power Drift Correction

System Information Mgt Resource Event Status

Measurements on common & dedicated

resources

RNC RNS

Class 1:

EP with response

Class 2:

EP with no response

CTCH Mgt

CTCH resource management

Node B

Configuration Alignment

General Error Reporting


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Flow Example: Radio Link Setup

RNCNode B

Radio Link Setup Request )Radio Link Setup Response

Radio Link Setup RequestRadio Link Setup Failure

Message DiscriminatorMessage TypeTransaction ID

CRNC Communi-cation Context ID



DCH InformationDSCH Information

TFCI2 bearerinformation IEs

RL Information IEsTransmission GapPattern Sequence

InformationActive PatternSequence Info


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Measurement on Common ResourcesC-RNC

Node BCommon Measurement Report )

Message DiscriminatorMessage TypeTransaction ID

CHOICECommon MeasurementObject Type

Cell

Measurement ID

RACHCPCH

SFN

Common Measurement Initiation Request

Common Measurement Failure Indication

Common Measurement Initation Response

Common Measurement Initation Failure

Common Measurement Termination Request


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Some Nokia ParametersThere is a wide range of telecom and WBTS parameters; please refer to the WCDMA

RAN 1.5 Dictionary.


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Part IVCall Setup Example


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Flow Example: Call SetupRNCode BE

3G-MSC/VLR

RRC Connection Request (cause: Originating Conversational Call)

RRC Connection SetupRRC Connection Setup Complete

Initial Direct Transfer ...,CM Service Request,...)(cause: MOC establishment request)

Initial UE MessageLAI, CM Service Request,...)

MM

RRC

MM

NBAP Radio Link Setup RequestRadio Link Setup Response

Downlink SynchronisationUplink Synchronisation


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3G-MSC/VLR

Security Mode CommandSecurity Mode CommandSecurity Mode Complete Security Mode Complete

Initial Direct Transfer ...,Setup,...)(called party address, codec capabilities) Direct Transfer...,Setup,...)

Direct Transfer...,Call Proceeding,...)DL Direct Transfer ..., Call Proceeding,...)

Common ID...,IMSI,...)

CC CC

RANAP

RANAP

RRC

Direct Transfer...,Authentication Request,...)L Direct Transfer ..., Authentication Request,...)UL Direct Transfer ...,Authentication Response,...)

(old LAI, old TMSI, MS classmark,...)Direct Transfer...,Authentication Response,...)

MM MM


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3G-MSC/VLR

CC

NBAP RANAP

RRC

RAB Assignment RequestRadio Link Reconfiguration Request

Radio Link Reconfiguration Response

Radio Bearer SetupRadio Bearer Setup Complete RAB Assignment Response

Direct Transfer ...,Alerting,...)DL Direct Transfer ..., Alerting,...) CCDirect Transfer ...,Connect,...)DL Direct Transfer ..., Connect,...)

UL Direct Transfer ...,Connect Acknowledge,...) Direct Transfer...,Connect Acknowledge,...)

Media Flow

S09 3G RPLS2_v2-0 UTRAN Control Protocol

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