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3GPP (CT4)
TS 09.60














General Packet Radio Service (GPRS) – GPRS Tunnelling Protocol GPT) across the Gn and Gp Interface

(P) GSM Rel-98 v7.10.0    2002/12    69 p.
(P) GSM Rel-97 v6.13.0    2002/12    67 p.

Rapporteur:  SCHMITT, Peter
Descendant(s):  TS 29.060    

This TS defines the GPRS Tunnelling Protocol (GTP), i.e. the protocol between GSN nodes in the GPRS backbone network. It includes both the GTP signalling and data transfer procedures. It also lists the messages and information elements used by the GTP based charging protocol GTP', which is described in TS 12.15.

GTP is defined both for the Gn interface, i.e. the interface between GSNs within a PLMN, and the Gp interface between GSNs in different PLMNs. GTP' is defined for the interface between CDR generating functional network elements and Charging Gateway(s) within a PLMN. Charging Gateway(s) and GTP' protocol are optional, as the Charging Gateway Functionalities may either be located in separate network elements (Charging Gateways), or alternatively be embedded into the CDR generating network elements (GSNs) when the GSN-CGF interface is not necessarily visible outside the network element. These interfaces relevant to GTP are between the grey boxes shown in the figure below.

1   Scope   PDF-p. 7
2   References
3   Definitions and abbreviations   PDF-p. 8
4   General
5   Transmission order and bit definitions   PDF-p. 10
6   GTP header
7   Signalling Plane   PDF-p. 12
7.1   Signalling protocol
7.2   Signalling Message Formats      Up
7.3   Usage of the GTP Header   PDF-p. 13
7.4   Path Management messages   PDF-p. 14
7.5   Tunnel Management messages
7.6   Location Management messages   PDF-p. 28
7.7   Mobility Management messages
7.8   Reliable delivery of signalling messages   PDF-p. 35
7.9   Information elements
8   Transmission Plane   PDF-p. 52
9   Path Protocols      Up
10   Error handling   PDF-p. 55
11   Inter-PLMN GTP communication over the Gp interface      Up
12   IP, the networking technology used by GTP
13   GTP parameters
A   Naming convention   PDF-p. 64      Up
B   A method for sequence number checking   PDF-p. 65
C   Document change history   PDF-p. 66