【資料名稱】：諾西EPC白皮書

【資料作者】：Chandramouli, Devaki etc

【資料日期】：2010

【資料語言】：英文

【資料格式】：PDF

【資料目錄和簡介】：

1 Contents
2 Preface ................................................................................................................................................... 4
3 SAE Overview ....................................................................................................................................... 5
3.1 Brief History .................................................................................................................................................. 5
3.2 Drivers for the LTE/SAE Project.................................................................................................................... 5
3.3 LTE/SAE compared to 2G/3G ....................................................................................................................... 6
3.4 Specifics of Non-3GPP Access Interworking ................................................................................................. 7
4 SAE Network Architecture .................................................................................................................... 8
4.1 Introduction ................................................................................................................................................... 8
4.2 General (Non-Roaming) Architecture ............................................................................................................ 8
4.3 Roaming Architecture (home routed) ........................................................................................................... 10
4.4 Roaming Architecture (local breakout) ......................................................................................................... 11
4.5 Home eNodeB Architecture ......................................................................................................................... 12
4.6 Interworking with 2G/3G Networks ............................................................................................................. 14
4.7 Interworking with Non-3GPP Access Networks ........................................................................................... 15
5 Session and Bearer Management Procedures ....................................................................................... 18
5.1 Overview ..................................................................................................................................................... 18
5.2 QoS and EPS Bearers ................................................................................................................................... 18
5.3 Establishment of a PDN Connection ............................................................................................................ 19
5.3.1 3GPP Access .......................................................................................................................................... 19
5.3.1.1 UE requested PDN Connectivity ....................................................................................................... 20
5.3.2 Non-3GPP Access .................................................................................................................................. 20
5.3.2.1 Non-3GPP Access Networks with PMIPv6 ....................................................................................... 21
5.3.2.2 Non-3GPP Access Networks with DSMIPv6 .................................................................................... 22
5.3.2.3 Multiple PDN Connections via Non-3GPP Access Networks ............................................................ 22
5.3.2.4 QoS over Non-3GPP Access Networks ............................................................................................. 22
5.4 Allocation of dedicated bearers .................................................................................................................... 23
5.4.1 Network initiated Dedicated Bearer Context Activation Procedure ......................................................... 23
5.4.2 UE requested Bearer Resource Allocation Procedure .............................................................................. 24
5.4.3 UE requested Bearer Resource Modification Procedure .......................................................................... 24
5.5 IP Address Allocation .................................................................................................................................. 25
6 Mobility Management Procedures ....................................................................................................... 26
6.1 Overview ..................................................................................................................................................... 26
6.2 Attach .......................................................................................................................................................... 26
6.3 Tracking Area Updating ............................................................................................................................... 29
6.4 Intra E-UTRAN Handover ........................................................................................................................... 30
6.4.1 General ................................................................................................................................................... 30
6.4.2 X2-based Handover ................................................................................................................................ 31
6.4.3 S1-based Handover ................................................................................................................................. 32
6.5 Inter RAT Handover .................................................................................................................................... 34
6.5.1 2G/3G Handover .................................................................................................................................... 34
6.5.2 Non-3GPP Handover .............................................................................................................................. 36
7 Security Functions ................................................................................................................................ 39
7.1 Confidentiality and Integrity Protection ........................................................................................................ 39
7.2 Lawful Interception ...................................................................................................................................... 39
7.2.1 Lawful Interception for EPS ................................................................................................................... 40
7.2.2 Handover Interface in EPS ...................................................................................................................... 42
7.2.2.1 HI2 Interface and IRI Interception ..................................................................................................... 42
7.2.2.2 HI3 Interface and CC Interception ..................................................................................................... 42
7.2.3 EPS LawfuI Interception in ETSI ........................................................................................................... 42
8 Features and Functionalities ................................................................................................................. 43
8.1 Voice and SMS Support ............................................................................................................................... 43
8.1.1 Overview ................................................................................................................................................ 43
8.1.2 CS Fallback ............................................................................................................................................ 43
8.1.3 Single Radio Voice Call Continuity ........................................................................................................ 44
8.1.4 Short Message Service ............................................................................................................................ 45
8.2 Multimedia Broadcast/Multicast Service ...................................................................................................... 46
8.3 Emergency Services ..................................................................................................................................... 48
8.3.1 Overview ................................................................................................................................................ 48
8.3.2 Regulations and their Impact on Emergency Services ............................................................................. 48
8.3.3 Emergency Services in EPS .................................................................................................................... 48
8.3.4 Emergency Numbers and Detection of Emergency Calls ........................................................................ 49
8.4 Location Based Services .............................................................................................................................. 49
8.5 Public Warning System (PWS) .................................................................................................................... 51
9 Summary and Outlook ......................................................................................................................... 52
10 Terminology ......................................................................................................................................... 53
11 Appendix .............................................................................................................................................. 56
11.1 Reference Points .......................................................................................................................................... 56
12 References ............................................................................................................................................ 58