GTPv2-协议描述

3GPP TS 29.274 V13.1.0 (2021-03) Technical Specification

3rd Generation Partnership Project;

Technical Specification Group Core Network and Terminals; 3GPP Evolved Packet System (EPS);

Evolved General Packet Radio Service (GPRS) Tunnelling Protocol for Control plane (GTPv2-C); Stage 3 (Release 13)

The present document has been developed within the 3rd Generation

Partnership Project (3GPP TM) and may be further elaborated for the purposes of 3GPP.. The present document has not been subject to any approval process by the 3GPP Organizational Partners and shall not be implemented.

This Specification is provided for future development work within 3GPP only. The Organizational Partners accept no liability for any use of this Specification. Specifications and reports for implementation of the 3GPP TM system should be obtained via the 3GPP Organizational Partners' Publications Offices.

Release 13 2 3GPP TS 29.274 V13.1.0 (2021-03) Keywords

GSM, UMTS, packet mode, GPRS, LTE 3GPP Postal address

3GPP support office address

650 Route des Lucioles - Sophia Antipolis Valbonne - FRANCE

Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Internet

http://www.3gpp.org Copyright Notification

No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media.

? 2021, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC).

All rights reserved.

UMTS? is a Trade Mark of ETSI registered for the benefit of its members 3GPP? is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners

LTE? is a Trade Mark of ETSI currently being registered for the benefit of its Members and of the 3GPP Organizational Partners GSM? and the GSM logo are registered and owned by the GSM Association 3GPP

Release 13 3 3GPP TS 29.274 V13.1.0 (2021-03) Contents

Foreword........................................................................................................................................................... 10 1 2 3

3.1 3.2 3.3

Scope ...................................................................................................................................................... 11

References .............................................................................................................................................. 11 Definitions, symbols and

abbreviations ................................................................................................. 14

Definitions ....................................................................................................................................................... 14

Symbols ........................................................................................................................................................... 14

Abbreviations ................................................................................................................................................... 14 4

General ................................................................................................................................................... 16

4.1 GTP

Tunnel ..................................................................................................................................................... 16 4.2 Protocol

stack................................................................................................................................................... 16 4.2.0

General ....................................................................................................................................................... 16 4.2.1 UDP header and port

numbers ................................................................................................................... 17 4.2.1.0

General ......................................................................

........................................................................... 17 4.2.1.1 Initial

Messages .................................................................................................................................... 18 4.2.1.2 Triggered

Messages .............................................................................................................................. 18 4.2.1.3 Piggybacked

Messages ......................................................................................................................... 18 4.2.2 IP header and IP addresses ......................................................................................................................... 18 4.2.2.1 Initial

Messages .................................................................................................................................... 18 4.2.2.2 Triggered

Messages .............................................................................................................................. 19 4.2.2.3 Piggybacked

Messages ......................................................................................................................... 19 4.2.3 Layer

2 ....................................................................................................................................................... 19 4.2.4 Layer

1 ....................................................................................................................................................... 19 4.2.5 Messages with GTPv2 defined replies: Classification of Initial and

Triggered Messages ......................... 19 4.3 Transmission Order and Bit Definitions .......................................................................................................... 20 5

GTP Header for Control

Plane ............................................................................................................... 20 5.1 General

format ................................................................................................................................................. 20 5.2 Control Plane GTP Extension

Header ............................................................................................................. 21 5.3 GTP-C header for Echo and Version Not Supported Indication

messages ...................................................... 21 5.4 EPC

specific GTP-C

header............................................................................................................................. 21 5.5 Usage of the GTPv2-C

Header ........................................................................................................................ 22 5.5.1

General ............................................................................................................................................................. 22 5.5.2 Conditions for sending TEID=0 in GTPv2-C

header ................................................................................. 23 5.6 Format of the GTPv2-C

Message .................................................................................................................... 24 6 6.0 6.1

GTP-C Message Types and Message

Formats ....................................................................................... 25

General ................................................................................................................................................... 25 Message Format and Type

values .................................................................................................................... 25 Message

Type............................................................................................................................................. 25 Presence requirements of Information

Elements ........................................................................................ 28 Grouped Information

Elements .................................................................................................................. 29 Information Element

instance .................................................................................................................... 30 Message

Granularity ........................................................................................................................................ 30 GTP-C

messages .............................................................................................................................................. 31 Path Management

Messages ............................................................................................................................ 31

General ......................................................................

................................................................................. 31 Echo

Request .............................................................................................................................................. 31 Echo

Response ........................................................................................................................................... 31 Version Not Supported

Indication .............................................................................................................. 32 Tunnel Management

Messages ........................................................................................................................ 32

General ....................................................................................................................................................... 32 Create Session

Request .............................................................................................................................. 32 Create Session Response ............................................................................................................................ 46 Create Bearer

Request ................................................................................................................................ 56 Create Bearer Response ............................................................................................................................. 61

6.1.0 6.1.1 6.1.2 6.1.3 6.2 7 7.1 7.1.0 7.1.1 7.1.2 7.1.3 7.2 7.2.0 7.2.1 7.2.2 7.2.3 7.2.4 3GPP

Release 13 4 3GPP TS 29.274 V13.1.0 (2021-03)

7.2.5 Bearer Resource

Command ........................................................................................................................ 66 7.2.6 Bearer Resource Failure

Indication ............................................................................................................ 69 7.2.7 Modify Bearer

Request .............................................................................................................................. 71 7.2.8 Modify Bearer

Response .....................................................................

....................................................... 85 7.2.9 Delete Session Request and Delete Bearer

Request ................................................................................... 91 7.2.9.1 Delete Session

Request ......................................................................................................................... 91 7.2.9.2 Delete Bearer Request .......................................................................................................................... 96 7.2.10 Delete Session Response and Delete Bearer

Response ............................................................................ 101 7.2.10.1 Delete Session

Response .................................................................................................................... 101 7.2.10.2 Delete Bearer Response ...................................................................................................................... 106 7.2.11 Downlink Data Notification

messages ..................................................................................................... 110 7.2.11.1 Downlink Data

Notification ............................................................................................................... 110 7.2.11.2 Downlink Data Notification

Acknowledge ........................................................................................ 114 7.2.11.3 Downlink Data Notification Failure

Indication .................................................................................. 115 7.2.12 Delete Indirect Data Forwarding Tunnel

Request .................................................................................... 116 7.2.13 Delete Indirect Data Forwarding Tunnel

Response ................................................................................. 116 7.2.14 Modify Bearer Command and Failure

Indication..................................................................................... 117 7.2.14.1 Modify Bearer

Command ................................................................................................................. 117 7.2.14.2 Modify Bearer Failure Indication ....................................................................................................... 119 7.2.15 Update Bearer

Request ............................................................................................................................. 121 7.2.16 Update Bearer

Response .....................................................................

..................................................... 126 7.2.17 Delete Bearer Command and Failure

Indication ...................................................................................... 130 7.2.17.1 Delete Bearer

Command .................................................................................................................... 130 7.2.17.2 Delete Bearer Failure

Indication ......................................................................................................... 132 7.2.18 Create Indirect Data Forwarding Tunnel

Request .................................................................................... 134 7.2.19 Create Indirect Data Forwarding Tunnel

Response ................................................................................. 137 7.2.20

Void .......................................................................................................................................................... 138 7.2.21 Release Access Bearers

Request .............................................................................................................. 138 7.2.22 Release Access Bearers Response ............................................................................................................ 139 7.2.23 Stop Paging

Indication ............................................................................................................................. 141 7.2.24 Modify Access Bearers

Request............................................................................................................... 141 7.2.25 Modify Access Bearers Response ............................................................................................................ 143 7.3 Mobility Management

Messages ................................................................................................................... 146 7.3.1 Forward Relocation Request .................................................................................................................... 146 7.3.2 Forward Relocation Response .................................................................................................................. 154 7.3.3 Forward Relocation Complete

Notification ............................................................................................. 157 7.3.4 Forward Relocation Complete

Acknowledge .......................................................................................... 157 7.3.5 Context

Request ....................................................................................................................................... 158 7.3.6 Context

Response ..................................................................................................................................... 160 7.3.7 Context

Acknowledge .............................................................................................................................. 166 7.3.8 Identification

Request .............................................................................................................................. 167 7.3.9 Identification

Response ............................................................................................................................ 168 7.3.10 Forward Access Context

Notification ...................................................................................................... 169 7.3.11 Forward Access Context

Acknowledge ................................................................................................... 169 7.3.12 Detach

Notification .................................................................................................................................. 170 7.3.13 Detach

Acknowledge ............................................................................................................................... 171 7.3.14 Change Notification

Request.................................................................................................................. 171 7.3.15 Change Notification Response ................................................................................................................. 173 7.3.16 Relocation Cancel Request ....................................................................................................................... 174 7.3.17 Relocation Cancel Response .................................................................................................................... 175 7.3.18 Configuration Transfer

Tunnel ................................................................................................................. 175 7.3.19 RAN Information

Relay ........................................................................................................................... 175 7.3.20 ISR Status Indication ...................................................................

............................................................. 176 7.3.21 UE Registration Query

Request ............................................................................................................... 176 7.3.22 UE Registration Query Response ............................................................................................................. 177 7.4 CS Fallback and SRVCC related messages ................................................................................................... 177 7.4.1 Suspend

Notification ................................................................................................................................ 177 7.4.2 Suspend

Acknowledge ............................................................................................................................. 179 7.4.3 Resume Notification ................................................................................................................................. 179 7.4.4 Resume

Acknowledge .............................................................................................................................. 180 7.4.5 CS Paging

Indication ................................................................................................................................ 180 7.4.6 Alert MME

Notification ........................................................................................................................... 181 3GPP

Release 13 5 3GPP TS 29.274 V13.1.0 (2021-03)

7.4.7 7.4.8 7.4.9 7.5 7.5.1 7.5.2 7.6 7.7 7.7.0 7.7.1 7.7.2 7.7.3 7.7.4 7.7.5 7.7.6 7.7.7 7.7.8 7.7.9 7.7.10 7.7.11 7.8 7.9 7.9.0 7.9.1 7.9.2 7.9.3 7.9.4 7.9.5 7.9.6 7.9.7 7.9.8 7.10 7.11 7.12 7.12.1 7.12.2 7.13 7.13.1 7.13.2 7.13.3 7.13.4 7.13.5 7.13.6 Alert MME

Acknowledge ........................................................................................................................ 181 UE Activity

Notification .......................................................................................................................... 181 UE Activity Acknowledge ....................................................................................................................... 182 Non-3GPP access related

messages ............................................................................................................... 182 Create Forwarding Tunnel

Request .......................................................................................................... 182 Create Forwarding Tunnel

Response ....................................................................................................... 182 Reliable Delivery of Signalling

Messages ..................................................................................................... 183 Error

Handling ............................................................................................................................................... 184 Handling Piggybacked

Messages ............................................................................................................. 184 Protocol

Errors ......................................................................................................................................... 184 Different GTP

Versions ........................................................................................................................... 185 GTP Message of Invalid

Length .............................................................................................................. 185 Unknown GTP

Message ........................................................................................................................... 185 Unexpected GTP

Message ....................................................................................................................... 185 Missing Information Elements ................................................................................................................. 186 Invalid Length Information Element ........................................................................................................ 186 Semantically incorrect Information Element ............................................................................................ 187 Unknown or unexpected Information

Element ........................................................................................ 187 Repeated Information

Elements ............................................................................................................... 187 TFT Error

Handling ................................................................................................................................. 188 Path

Failure ....................................................................................................................................................

188 Restoration and

Recovery .............................................................................................................................. 188

General ..................................................................................................................................................... 188 Delete PDN Connection Set

Request ....................................................................................................... 188 Delete PDN Connection Set

Response ..................................................................................................... 188 Update PDN Connection Set

Request ...................................................................................................... 189 Update PDN Connection Set

Response .................................................................................................... 189 PGW Restart

Notification ........................................................................................................................ 190 PGW Restart Notification

Acknowledge ................................................................................................. 190 PGW Downlink Triggering

Notification .................................................................................................. 191 PGW Downlink Triggering

Acknowledge ............................................................................................... 191 Fallback to GTPv1

mechanism ...................................................................................................................... 192 Fallback to

GTPv0 ......................................................................................................................................... 192 Trace Management

Messages ........................................................................................................................ 193 Trace Session

Activation .......................................................................................................................... 193 Trace Session Deactivation ...................................................................................................................... 193 MBMS

Messages ........................................................................................................................................... 194 MBMS Session Start

Request .................................................................................................................. 194 MBMS Session Start

Response ................................................................................................................ 195 MBMS Session Update

Request .............................................................................................................. 195 MBMS Session Update

Response ............................................................................................................ 195 MBMS Session Stop

Request .................................................................................................................. 196 MBMS Session Stop

Response ................................................................................................................ 196 8

8.1 8.2 8.2.1 8.2.2 8.3 8.4 8.5 8.6 8.7 8.8 8.9 8.10 8.11 8.12 8.13 8.14 8.15

GTP-C Information

Elements .............................................................................................................. 197 Information Element

Types ........................................................................................................................... 197 Information Element Format.......................................................................................................................... 200

General ..................................................................................................................................................... 200 Handling ASN.1/PER encoded

parameters .............................................................................................. 200 International Mobile Subscriber Identity

(IMSI) ........................................................................................... 200

Cause ............................................................................................................................................................. 201 Recovery (Restart

Counter) ........................................................................................................................... 206 Access Point Name (APN) ............................................................................................................................ 206 Aggregate Maximum Bit Rate

(AMBR) ........................................................................................................ 207 EPS Bearer ID

(EBI)...................................................................................................................................... 207 IP

Address ...................................................................................................................................................... 207 Mobile Equipment Identity

(MEI) ................................................................................................................. 208

MSISDN ........................................................................................................................................................ 208

Indication ....................................................................................................................................................... 208 Protocol Configuration Options

(PCO).......................................................................................................... 211 PDN Address Allocation

(PAA) .................................................................................................................... 212 Bearer Quality of Service (Bearer

QoS) ........................................................................................................ 212 3GPP

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