ETSI TS 129 274 V16.7.0 (2021-04)

Universal Mobile Telecommunications System (UMTS); LTE; 5G; 3GPP Evolved Packet System (EPS); Evolved General Packet Radio Service (GPRS) Tunnelling Protocol for Control plane (GTPv2-C); Stage 3 (3GPP TS 29.274 version 16.7.0 Release 16)

RTS/TSGC-0429274vg70

General Information

• Status: Not Published
• Technical Committee: 3GPP CT 4 - MAP/CAMEL/GTP/BCH/SS/TrFO/IMS/GUP/WLAN (formely CN4)
• Current Stage: 12 - Completion
• Completion Date: 15-Apr-2021

Standards Content (Sample)

ETSI TS 129 274 V16.7.0 (2021-04)






TECHNICAL SPECIFICATION
Universal Mobile Telecommunications System (UMTS);
LTE;
5G;
3GPP Evolved Packet System (EPS);
Evolved General Packet Radio Service (GPRS)
Tunnelling Protocol for Control plane (GTPv2-C);
Stage 3
(3GPP TS 29.274 version 16.7.0 Release 16)

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3GPP TS 29.274 version 16.7.0 Release 16 1 ETSI TS 129 274 V16.7.0 (2021-04)

Reference
RTS/TSGC-0429274vg70
Keywords
5G,LTE,UMTS

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ETSI

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3GPP TS 29.274 version 16.7.0 Release 16 2 ETSI TS 129 274 V16.7.0 (2021-04)
Intellectual Property Rights
Essential patents
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Members. 3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and of the 3GPP
Organizational Partners. oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and of the
®
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Legal Notice
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"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI

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3GPP TS 29.274 version 16.7.0 Release 16 3 ETSI TS 129 274 V16.7.0 (2021-04)
Contents
Intellectual Property Rights . 2
Legal Notice . 2
Modal verbs terminology . 2
Foreword . 11
1 Scope . 13
2 References . 13
3 Definitions, symbols and abbreviations . 17
3.1 Definitions . 17
3.2 Symbols . 17
3.3 Abbreviations . 17
4 General . 19
4.1 GTP Tunnel . 19
4.2 Protocol stack . 19
4.2.0 General . 19
4.2.1 UDP header and port numbers . 20
4.2.1.0 General . 20
4.2.1.1 Initial Messages . 21
4.2.1.2 Triggered Messages . 21
4.2.1.3 Piggybacked Messages . 21
4.2.2 IP header and IP addresses . 21
4.2.2.1 Initial Messages . 21
4.2.2.2 Triggered Messages . 22
4.2.2.3 Piggybacked Messages . 23
4.2.3 Layer 2 . 23
4.2.4 Layer 1 . 23
4.2.5 Messages with GTPv2 defined replies: Classification of Initial and Triggered Messages . 23
4.3 Transmission Order and Bit Definitions . 24
5 GTP Header for Control Plane . 24
5.1 General format . 24
5.2 Control Plane GTP Extension Header . 24
5.3 GTP-C header for Echo and Version Not Supported Indication messages . 24
5.4 EPC specific GTP-C header . 25
5.5 Usage of the GTPv2-C Header . 25
5.5.1 General . 25
5.5.2 Conditions for sending TEID=0 in GTPv2-C header . 26
5.6 Format of the GTPv2-C Message . 28
6 GTP-C Message Types and Message Formats . 29
6.0 General . 29
6.1 Message Format and Type values . 29
6.1.0 Message Type . 29
6.1.1 Presence requirements of Information Elements . 33
6.1.2 Grouped Information Elements . 34
6.1.3 Information Element instance . 35
6.2 Message Granularity. 35
7 GTP-C messages . 36
7.1 Path Management Messages. 36
7.1.0 General . 36
7.1.1 Echo Request . 36
7.1.2 Echo Response . 37
7.1.3 Version Not Supported Indication . 37
7.2 Tunnel Management Messages . 37
ETSI

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3GPP TS 29.274 version 16.7.0 Release 16 4 ETSI TS 129 274 V16.7.0 (2021-04)
7.2.0 General . 37
7.2.1 Create Session Request . 37
7.2.2 Create Session Response . 59
7.2.3 Create Bearer Request . 72
7.2.4 Create Bearer Response . 76
7.2.5 Bearer Resource Command . 81
7.2.6 Bearer Resource Failure Indication . 84
7.2.7 Modify Bearer Request . 87
7.2.8 Modify Bearer Response . 108
7.2.9 Delete Session Request and Delete Bearer Request . 114
7.2.9.1 Delete Session Request . 114
7.2.9.2 Delete Bearer Request . 121
7.2.10 Delete Session Response and Delete Bearer Response . 127
7.2.10.1 Delete Session Response . 127
7.2.10.2 Delete Bearer Response . 131
7.2.11 Downlink Data Notification messages . 135
7.2.11.1 Downlink Data Notification . 135
7.2.11.2 Downlink Data Notification Acknowledge . 139
7.2.11.3 Downlink Data Notification Failure Indication . 141
7.2.12 Delete Indirect Data Forwarding Tunnel Request . 141
7.2.13 Delete Indirect Data Forwarding Tunnel Response . 142
7.2.14 Modify Bearer Command and Failure Indication . 143
7.2.14.1 Modify Bearer Command . 143
7.2.14.2 Modify Bearer Failure Indication . 145
7.2.15 Update Bearer Request . 147
7.2.16 Update Bearer Response . 152
7.2.17 Delete Bearer Command and Failure Indication . 157
7.2.17.1 Delete Bearer Command . 157
7.2.17.2 Delete Bearer Failure Indication . 159
7.2.18 Create Indirect Data Forwarding Tunnel Request . 162
7.2.19 Create Indirect Data Forwarding Tunnel Response . 165
7.2.20 Void . 167
7.2.21 Release Access Bearers Request . 167
7.2.22 Release Access Bearers Response . 168
7.2.23 Stop Paging Indication . 170
7.2.24 Modify Access Bearers Request . 170
7.2.25 Modify Access Bearers Response . 174
7.2.26 Remote UE Report Notification. 177
7.2.27 Remote UE Report Acknowledge . 178
7.3 Mobility Management Messages . 178
7.3.1 Forward Relocation Request . 178
7.3.2 Forward Relocation Response . 194
7.3.3 Forward Relocation Complete Notification . 197
7.3.4 Forward Relocation Complete Acknowledge . 198
7.3.5 Context Request . 198
7.3.6 Context Response . 202
7.3.7 Context Acknowledge. 214
7.3.8 Identification Request . 217
7.3.9 Identification Response . 218
7.3.10 Forward Access Context Notification . 219
7.3.11 Forward Access Context Acknowledge . 220
7.3.12 Detach Notification . 220
7.3.13 Detach Acknowledge . 221
7.3.14 Change Notification Request . 222
7.3.15 Change Notification Response . 225
7.3.16 Relocation Cancel Request . 226
7.3.17 Relocation Cancel Response . 227
7.3.18 Configuration Transfer Tunnel . 227
7.3.19 RAN Information Relay . 228
7.3.20 ISR Status Indication . 229
7.3.21 UE Registration Query Request . 229
7.3.22 UE Registration Query Response . 230
ETSI

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3GPP TS 29.274 version 16.7.0 Release 16 5 ETSI TS 129 274 V16.7.0 (2021-04)
7.4 CS Fallback and SRVCC related messages . 230
7.4.1 Suspend Notification. 230
7.4.2 Suspend Acknowledge . 232
7.4.3 Resume Notification . 233
7.4.4 Resume Acknowledge . 234
7.4.5 CS Paging Indication . 234
7.4.6 Alert MME Notification . 235
7.4.7 Alert MME Acknowledge . 235
7.4.8 UE Activity Notification . 235
7.4.9 UE Activity Acknowledge . 236
7.5 Non-3GPP access related messages . 236
7.5.1 Create Forwarding Tunnel Request . 236
7.5.2 Create Forwarding Tunnel Response . 236
7.6 Reliable Delivery of Signalling Messages . 237
7.7 Error Handling . 238
7.7.0 Handling Piggybacked Messages . 238
7.7.1 Protocol Errors . 238
7.7.2 Different GTP Versions . 239
7.7.3 GTP Message of Invalid Length . 239
7.7.4 Unknown GTP Message . 239
7.7.5 Unexpected GTP Message . 239
7.7.6 Missing Information Elements . 240
7.7.7 Invalid Length Information Element . 240
7.7.8 Semantically incorrect Information Element . 241
7.7.9 Unknown or unexpected Information Element . 241
7.7.10 Repeated Information Elements . 242
7.7.11 TFT Error Handling . 242
7.8 Path Failure . 242
7.9 Restoration and Recovery . 242
7.9.0 General . 242
7.9.1 Delete PDN Connection Set Request . 242
7.9.2 Delete PDN Connection Set Response . 243
7.9.3 Update PDN Connection Set Request . 243
7.9.4 Update PDN Connection Set Response . 243
7.9.5 PGW Restart Notification . 244
7.9.6 PGW Restart Notification Acknowledge .
...