GPRS Roaming Guidelines
Table of Contents
1.1 Overview......................................................................................................... 4
1.1.1 Scope.............................................................................................................. 4
1.1.2 Architecture and Interfaces............................................................................. 4
1.2 Definition of Terms.......................................................................................... 5
1.3 Document Cross-References......................................................................... 5
3.1 Introduction...................................................................................................... 6
3.2 Inter-PLMN IP backbone network requirements............................................ 6
3.2.1 IP address & routing....................................................................................... 6
3.2.2 DNS................................................................................................................. 6
3.3 Access Point Name (APN)............................................................................. 7
3.3.1 General............................................................................................................ 7
3.3.2 APN Components........................................................................................... 7
3.3.2.1 Overview............................................................................................... 7
3.3.2.2 Network Identifier.................................................................................. 7
3.3.2.3 Operator Identifier................................................................................. 9
3.3.3 Types of APN................................................................................................ 10
3.3.3.1 General................................................................................................ 10
3.3.3.2 Service APN....................................................................................... 10
3.3.3.3 Wildcard APN...................................................................................... 10
3.4 Addressing..................................................................................................... 10
3.4.1 UE Addressing.............................................................................................. 10
3.4.1.1 SS7...................................................................................................... 10
3.4.1.2 IP......................................................................................................... 10
3.4.2 Network Element Addressing....................................................................... 12
3.4.3 The Transition to IPv6................................................................................... 13
3.4.3.1 General................................................................................................ 13
3.4.3.2 Home GGSN Roaming....................................................................... 13
3.4.3.3 Visited GGSN Roaming...................................................................... 14
3.5 PDP Types.................................................................................................... 14
3.5.1 Introduction.................................................................................................... 14
3.5.2 No PDP Context........................................................................................... 14
3.5.3 IPv4 only PDP Context................................................................................. 15
3.5.4 IPv6 only PDP Context................................................................................. 15
3.5.5 IPv4 only PDP Context and IPv6 only PDP Context................................... 16
3.5.6 IPv4 and IPv6 PDP Context......................................................................... 16
4.1 Introduction.................................................................................................... 16
4.2 Control of multiple, concurrent PDP Contexts............................................. 16
4.2.1 Definition........................................................................................................ 16
4.2.2 Recommendations........................................................................................ 17
4.3 Flow Based Charging.................................................................................... 17
4.3.1 Definition........................................................................................................ 17
4.3.2 Recommendations........................................................................................ 18
4.4 Automatic Device Detection......................................................................... 18
4.4.1 Definition........................................................................................................ 18
4.4.2 Recommendations........................................................................................ 18
4.5 Direct Tunnel Functionality........................................................................... 18
4.5.1 Definition........................................................................................................ 18
4.5.2 Recommendations........................................................................................ 19
4.6 SGSN sharing............................................................................................... 19
4.6.1 Definition........................................................................................................ 19
4.6.2 Recommendations........................................................................................ 19
6.1 GTP version 0 and version 1 Interworking Problem..................................... 19
6.1.1 Introduction.................................................................................................... 19
6.1.2 VPLMN solution............................................................................................ 20
6.1.3 HPLMN solution............................................................................................ 20
6.2 IP source address of GTPv1 response messages....................................... 20
6.3 GPRS QoS Classes...................................................................................... 21
Document History...................................................................................................... 22
Other Information....................................................................................................... 22
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