SIST EN 301 347 V7.5.1:2003

SLOVENSKI STANDARD
SIST EN 301 347 V7.5.1:2003
01-december-2003
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Digital cellular telecommunications system (Phase 2+) (GSM); General Packet Radio
Service (GPRS); GPRS Tunnelling Protocol (GTP) across the Gn and Gp Interface
(GSM 09.60 version 7.5.1 Release 1998)
Ta slovenski standard je istoveten z: EN 301 347 Version 7.5.1
ICS:
33.070.50 Globalni sistem za mobilno Global System for Mobile
telekomunikacijo (GSM) Communication (GSM)
SIST EN 301 347 V7.5.1:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 301 347 V7.5.1:2003

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SIST EN 301 347 V7.5.1:2003
ETSI EN 301 347 V7.5.1 (2000-12)
European Standard (Telecommunications series)
Digital cellular telecommunications system (Phase 2+);
General Packet Radio Service (GPRS);
GPRS Tunnelling Protocol (GTP)
across the Gn and Gp Interface
(GSM 09.60 version 7.5.1 Release 1998)
R
GLOBAL SYSTEM FOR
MOBILE COMMUNICATIONS

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SIST EN 301 347 V7.5.1:2003
2 ETSI EN 301 347 V7.5.1 (2000-12)
(GSM 09.60 version 7.5.1 Release 1998)
Reference
REN/TSGN-040960Q7R3
Keywords
Digital cellular telecommunications system,
Global System for Mobile communications (GSM)
ETSI
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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.
© European Telecommunications Standards Institute 2000.
All rights reserved.
ETSI

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SIST EN 301 347 V7.5.1:2003
3 ETSI EN 301 347 V7.5.1 (2000-12)
(GSM 09.60 version 7.5.1 Release 1998)
Contents
Intellectual Property Rights .6
Foreword.6
1 Scope.7
2 References.7
3 Definitions and abbreviations.8
3.1 Definitions . 8
3.2 Abbreviations. 9
4 General.9
5 Transmission order and bit definitions.10
6 GTP header.10
7 Signalling Plane.12
7.1 Signalling protocol . 12
7.2 Signalling Message Formats . 13
7.3 Usage of the GTP Header . 14
7.4 Path Management messages. 14
7.4.1 Echo Request. 14
7.4.2 Echo Response. 15
7.4.3 Version Not Supported. 15
7.5 Tunnel Management messages. 15
7.5.1 Create PDP Context Request . 15
7.5.2 Create PDP Context Response. 17
7.5.3 Update PDP Context Request. 19
7.5.4 Update PDP Context Response. 20
7.5.5 Delete PDP Context Request . 21
7.5.6 Delete PDP Context Response. 21
7.5.7 Create AA PDP Context Request. 22
7.5.8 Create AA PDP Context Response . 23
7.5.9 Delete AA PDP Context Request. 24
7.5.10 Delete AA PDP Context Response . 25
7.5.11 Error Indication. 25
7.5.12 PDU Notification Request. 25
7.5.13 PDU Notification Response. 26
7.5.14 PDU Notification Reject Request . 27
7.5.15 PDU Notification Reject Response. 27
7.6 Location Management messages. 28
7.6.1 Send Routeing Information for GPRS Request.28
7.6.2 Send Routeing Information for GPRS Response . 28
7.6.3 Failure Report Request. 29
7.6.4 Failure Report Response . 29
7.6.5 Note MS GPRS Present Request . 30
7.6.6 Note MS GPRS Present Response . 30
7.7 Mobility Management messages. 31
7.7.1 Identification Request . 31
7.7.2 Identification Response. 31
7.7.3 SGSN Context Request . 32
7.7.4 SGSN Context Response. 33
7.7.5 SGSN Context Acknowledge . 34
7.8 Reliable delivery of signalling messages . 34
7.9 Information elements. 35
7.9.1 Cause. 35
7.9.2 International Mobile Subscriber Identity (IMSI) . 38
7.9.3 Routeing Area Identity (RAI) . 38
ETSI

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SIST EN 301 347 V7.5.1:2003
4 ETSI EN 301 347 V7.5.1 (2000-12)
(GSM 09.60 version 7.5.1 Release 1998)
7.9.4 Temporary Logical Link Identity (TLLI) . 39
7.9.5 Packet TMSI (P-TMSI). 39
7.9.6 Quality of Service (QoS) Profile. 39
7.9.7 Reordering Required. 40
7.9.8 Authentication Triplet . 40
7.9.9 MAP Cause . 41
7.9.10 P-TMSI Signature. 41
7.9.11 MS Validated. 41
7.9.12 Recovery . 42
7.9.13 Selection mode . 42
7.9.14 Flow Label Data I . 42
7.9.15 Flow Label Signalling. 43
7.9.16 Flow Label Data II. 43
7.9.17 Charging ID. 43
7.9.18 End User Address . 44
7.9.19 MM Context . 46
7.9.20 PDP Context. 47
7.9.21 Access Point Name . 50
7.9.22 Protocol Configuration Options. 50
7.9.23 GSN Address. 50
7.9.24 MS International PSTN/ISDN Number (MSISDN). 51
7.9.25 Charging Gateway Address. 51
7.9.26 Private Extension . 51
8 Transmission Plane.52
8.1 Protocol Stack. 52
8.1.1 Usage of the GTP Header. 52
8.1.1.1 Usage of the Sequence Number. 53
8.2 Tunnelling between SGSNs. 53
8.3 Tunnelling between GGSNs . 53
9 Path Protocols.53
9.1 UDP/IP . 53
9.1.1 UDP Header . 54
9.1.1.1 Signalling request messages. 54
9.1.1.2 Signalling response messages. 54
9.1.1.3 Encapsulated T-PDUs. 54
9.1.2 IP Header. 54
9.1.2.1 Signalling request messages and Encapsulated T-PDUs. 54
9.1.2.2 Signalling response messages. 54
9.2 TCP/IP. 54
9.2.1 TCP Header . 54
9.2.2 IP Header. 54
10 Error handling .55
10.1 Protocol errors. 55
10.1.1 Different GTP versions . 55
10.1.2 GTP Message too short . 55
10.1.3 Unknown GTP signalling message . 55
10.1.4 Unexpected GTP signalling message. 55
10.1.5 Missing mandatorily present information element. 55
10.1.6 Invalid Length. 56
10.1.7 Invalid mandatory information element . 56
10.1.8 Invalid optional information element. 56
10.1.9 Unknown information element . 56
10.1.10 Out of sequence information elements. 56
10.1.11 Unexpected information element. 56
10.1.12 Repeated information elements. 57
10.1.13 Incorrect optional information elements. 57
10.2 Path failure. 57
10.3 MS detach. 57
10.4 Restoration and Recovery. 57
ETSI

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SIST EN 301 347 V7.5.1:2003
5 ETSI EN 301 347 V7.5.1 (2000-12)
(GSM 09.60 version 7.5.1 Release 1998)
11 Inter-PLMN GTP communication over the Gp interface.57
12 IP, the networking technology used by GTP.57
12.1 IP version. 57
12.2 IP fragmentation. 58
12.2.1 MO direction . 58
12.2.2 MT direction. 58
12.2.3 Tunnelling from old to new SGSN . 58
13 GTP parameters.58
13.1 Timers. 59
13.2 Others . 59
Annex A (informative): Naming convention .64
A.1 Routing Area Identities .64
A.2 GPRS Support Nodes.64
Annex B (informative): A method for sequence number checking .65
Annex C (informative): Document change history .66
History .67
ETSI

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SIST EN 301 347 V7.5.1:2003
6 ETSI EN 301 347 V7.5.1 (2000-12)
(GSM 09.60 version 7.5.1 Release 1998)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://www.etsi.org/ipr).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This European Standard (Telecommunications series) has been produced by ETSI Technical Committee Special Mobile
Group (SMG).
The present document defines the Gn and Gp interfaces for the General Packet Radio Service (GPRS) within the digital
cellular telecommunications system (Phase 2+).
The contents of the present document are subject to continuing work within SMG and may change following formal
SMG approval. Should SMG modify the contents of the present document, it will then be re-submitted for OAP by
ETSI with an identifying change of release date and an increase in version number as follows:
Version 7.x.y
where:
7 indicates Release 1998 of GSM Phase 2+.
x the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections,
updates, etc.
y the third digit is incremented when editorial only changes have been incorporated in the specification.
National transposition dates
Date of adoption of this EN: 1 December 2000
Date of latest announcement of this EN (doa): 31 March 2001
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 30 September 2001
Date of withdrawal of any conflicting National Standard (dow): 30 September 2001
ETSI

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SIST EN 301 347 V7.5.1:2003
7 ETSI EN 301 347 V7.5.1 (2000-12)
(GSM 09.60 version 7.5.1 Release 1998)
1 Scope
The present document defines the Gn and Gp interfaces for the General Packet Radio Service (GPRS).
2 References
The following documents contain provisions which, through reference in this text, constitute provisions of the present
document.
• References are either specific (identified by date of publication, edition number, version number, etc.) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• For a non-specific reference, the latest version applies.
• A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the same
number.
• For this Release 1998 document, references to GSM documents are for Release 1998 versions (version 7.x.y).
[1] GSM 01.04: "Digital cellular telecommunications system (Phase 2+); Abbreviations and
acronyms".
[2] GSM 03.03: "Digital cellular telecommunications system (Phase 2+); Numbering, addressing and
identification".
[3] GSM 03.07: "Digital cellular telecommunications system (Phase 2+); Restoration Procedures".
[4] GSM 03.20: "Digital cellular telecommunications system (Phase 2+); Security related network
functions".
[5] GSM 03.60: "Digital cellular telecommunications system (Phase 2+); General Packet Radio
Service (GPRS); Service Description; Stage 2".
[6] GSM 03.64: "Digital cellular telecommunications system (Phase 2+); General Packet Radio
Service (GPRS); Overall description of the GPRS Radio Interface; Stage 2".
[7] GSM 04.08: "Digital cellular telecommunications system (Phase 2+); Mobile radio interface
layer 3 - specification".
[8] GSM 04.64: "Digital cellular telecommunications system (Phase 2+); Mobile Station - Serving
GPRS Support Node (MS-SGSN) Logical Link Control (LLC) Layer Specification".
[9] GSM 09.02: "Digital cellular telecommunications system (Phase 2+); Mobile Application Part
(MAP) specification".
[10] STD 0005: "Internet Protocol", J. Postel.
[11] STD 0006: "User Datagram Protocol", J. Postel.
[12] STD 0007: "Transmission Control Protocol", J. Postel.
[13] RFC 1700: "Assigned Numbers", J. Reynolds and J. Postel.
[14] RFC 2181: "Clarifications to the DNS Specification", R. Elz and R. Bush.
[15] ITU-T Recommendation X.25: "Interface between data terminal equipment (DTE) and data
circuit-terminating equipment (DCE) for terminals operating in the packet mode and connected to
public data networks by dedicated circuit".
[16] ITU-T Recommendation X.121: "International Numbering Plan for Public Data Networks".
ETSI

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SIST EN 301 347 V7.5.1:2003
8 ETSI EN 301 347 V7.5.1 (2000-12)
(GSM 09.60 version 7.5.1 Release 1998)
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
Conditional: when the presence requirement for the information element is conditional, the receiving protocol level can
check the presence or absence of an IE based on the received information
G-PDU: T-PDUplus a GTPheader. AG-PDUis sentin a path
GTP-Flow: GTP flow is defined by the unidirectional virtual aggregation of G-PDUs and/or signalling messages
related to one or more GTP tunnels. A GTP flow is identified by a Flow Label included in the GTP header. The
meaning of the Flow Label is transparent for the transmitter side, only the receiver may evaluate the Flow Label
GTP tunnel: GTP tunnel is defined by two associated PDP Contexts in different GSN nodes and is identified with a
Tunnel ID. A GTP tunnel is necessary to forward packets between an external packet data network and a MS user
MM Context: information sets held in MS and GSNs for a GPRS subscriber related to mobility management (MM)
(please refer to the MM Context Information Element)
MM Context ID:IMSI or equivalent for use in conjunction with Anonymous Access (please refer to section GTP
Header)
NSAPI: Network Service Access Point Identifier. An integer value in the range [0; 15], identifying a certain PDP
Context. It identifies a PDP context belonging to a specific MM Context ID
Path: UDP/IP path and TCP/IP path are examples of paths that may be used to multiplex GTP tunnels
Path Protocol: Path Protocol is the protocol(s) used as a bearer of GTP between GSNs
PDP: Packet Data Protocol (PDP) is a network protocol used by an external packet data network interfacing to GPRS
PDP Context: information sets held in MS and GSNs for a PDP address (please refer to the PDP Context Information
Element)
Quality of Service: Quality of Service may be applicable for the GPRS backbone if the path media supports it.
Separate paths with different priorities may be defined between a GSN pair. However, the possible use of QoS in the
GGSN is outside the scope of the GTP specification
Signalling message: GTP signalling messages are exchanged between GSN pairs in a path. The signalling messages are
used to transfer GSN capability information between GSN pairs and to create, update and delete GTP tunnels
TCP/IP path: TCP/IP path is a reliable connection-oriented path defined by two end-points and an end-point is defined
by an
...