SAE and the Evolved Packet Core (eBook)
464 Seiten
Elsevier Science (Verlag)
978-0-08-088870-5 (ISBN)
This book provides a clear, concise, complete and authoritative introduction to System Architecture Evolution (SAE) standardization work and its main outcome: the Evolved Packet Core (EPC), including potential services and operational scenarios. After providing an insightful overview of SAE's historical development, the book gives detailed explanations of the EPC architecture and key concepts as an introduction. In-depth technical descriptions of EPC follow, including thorough functional accounts of the different components of EPC, protocols, network entities and procedures. Case studies of deployment scenarios show how the functions described within EPC are placed within a live network context, while a description of the services that are predicted to be used shows what EPC as a core network can enable.
This book is an essential resource for professionals and students who need to understand the latest developments in SAE and EPC, the 'engine' that connects broadband access to the internet.
All of the authors have from their positions with Ericsson been actively involved in GPRS, SAE and 3GPP from a business and technical perspective for many years. Several of the authors have also been actively driving the standardization efforts within 3GPP.
'There is no doubt that this book, which appears just when the mobile industry starts its transition away from legacy GSM/GPRS and UMTS networks into the future will become the reference work on SAE/LTE. There are no better qualified persons than the authors of this book to provide both communication professionals and an interested general public with insights into the inner workings of SAE/LTE. Not only are they associated with one of the largest mobile network equipment vendors in the world, they have all actively contributed to and, in some cases, been the driving forces behind the development of SAE/LTE within 3GPP.' - from the foreword by Dr. Ulf Nilsson, TeliaSonera R&D, Mobility Core and Connectivity
'The authors have done an excellent job in writing this book. Their familiarity with the requirements, concepts and solution alternatives, as well as the standardization work allows them to present the material in a way that provides easy communication between Architecture and Standards groups and Planning/ Operational groups within service provider organizations.' - from the foreword by Dr. Kalyani Bogineni, Principal Architect, Verizon
- Up-to-date coverage of SAE including the latest standards development
- Easily accessible overview of the architecture and concepts defined by SAE
- Thorough description of the Evolved Packet Core for LTE, fixed and other wireless accesses
- Comprehensive explanation of SAE key concepts, security and Quality-of-Service
- Covers potential service and operator scenarios including interworking with existing 3GPP and 3GPP2 systems
- Detailed walkthrough of network entities, protocols and procedures
- Written by established experts in the SAE standardization process, all of whom have extensive experience and understanding of its goals, history and vision
Magnus Olsson is an expert in system architecture and standardization at Ericsson. He has worked with the overall mobile network architecture since joining Ericsson in 1995 and has over 10 years of experience in the standardization of mobile systems. He served as the chairman of 3GPP TSG SA WG2 (Architecture Working Group) for four years and has contributed to numerous specifications within this forum. He has been involved in driving the System Architecture Evolution (SAE) work item since its inception within 3GPP. He holds an MSc in Applied Physics and Electrical Engineering from the Linköping Institute of Technology.
This book provides a clear, concise, complete and authoritative introduction to System Architecture Evolution (SAE) standardization work and its main outcome: the Evolved Packet Core (EPC), including potential services and operational scenarios. After providing an insightful overview of SAE's historical development, the book gives detailed explanations of the EPC architecture and key concepts as an introduction. In-depth technical descriptions of EPC follow, including thorough functional accounts of the different components of EPC, protocols, network entities and procedures. Case studies of deployment scenarios show how the functions described within EPC are placed within a live network context, while a description of the services that are predicted to be used shows what EPC as a core network can enable. This book is an essential resource for professionals and students who need to understand the latest developments in SAE and EPC, the 'engine' that connects broadband access to the internet. All of the authors have from their positions with Ericsson been actively involved in GPRS, SAE and 3GPP from a business and technical perspective for many years. Several of the authors have also been actively driving the standardization efforts within 3GPP. "e;There is no doubt that this book, which appears just when the mobile industry starts its transition away from legacy GSM/GPRS and UMTS networks into the future will become the reference work on SAE/LTE. There are no better qualified persons than the authors of this book to provide both communication professionals and an interested general public with insights into the inner workings of SAE/LTE. Not only are they associated with one of the largest mobile network equipment vendors in the world, they have all actively contributed to and, in some cases, been the driving forces behind the development of SAE/LTE within 3GPP."e; - from the foreword by Dr. Ulf Nilsson, TeliaSonera R&D, Mobility Core and Connectivity"e;The authors have done an excellent job in writing this book. Their familiarity with the requirements, concepts and solution alternatives, as well as the standardization work allows them to present the material in a way that provides easy communication between Architecture and Standards groups and Planning/ Operational groups within service provider organizations."e; - from the foreword by Dr. Kalyani Bogineni, Principal Architect, Verizon- Up-to-date coverage of SAE including the latest standards development- Easily accessible overview of the architecture and concepts defined by SAE- Thorough description of the Evolved Packet Core for LTE, fixed and other wireless accesses- Comprehensive explanation of SAE key concepts, security and Quality-of-Service- Covers potential service and operator scenarios including interworking with existing 3GPP and 3GPP2 systems- Detailed walkthrough of network entities, protocols and procedures- Written by established experts in the SAE standardization process, all of whom have extensive experience and understanding of its goals, history and vision
Front Cover 1
SAE and the Evolved Packet Core: Driving the Mobile Broadband Revolution 4
Copyright Page 5
Contents 6
Foreword by Dr. Ulf Nilsson 14
Foreword by Dr. Kalyani Bogineni 16
Preface 18
Acknowledgements 24
Part I: Introduction – Background and Vision of EPC 26
Chapter 1 Mobile broadband and the core network evolution 28
1.1 The need for global standards 29
1.2 Origins of the EPC 30
1.2.1. 3GPP radio access technologies 31
1.2.2. 3GPP2 radio access technologies 34
1.2.3. Other forums involved in SAE 34
1.2.4. Dawn of EPC 35
1.2.5. SAE – building bridges between different networks 35
1.2.6. Introducing EPC – an operator's and end-user's perspective 37
Chapter 2 SAE history and background 39
2.1 Impact of standardization processes on SAE 39
2.2 Terminologies used in this book 44
Part II: Overview of EPS 48
Chapter 3 Architecture overview 50
3.1 EPS Architecture 50
3.1.1 Basic IP connectivity over LTE access 54
3.1.2 Adding more advanced functionality for LTE access 58
3.1.3 Interworking between LTE and GSM/GPRS or WCDMA/HSPA 60
3.1.4 Interworking between LTE and CDMA networks 68
3.1.5 Interworking between 3GPP access technologies and non-3GPP access technologies 71
3.1.6 Support for voice services 74
3.1.7 Miscellaneous features 76
3.1.8 Summing up the architecture overview 78
3.2 Mobile devices 78
3.2.1 Different types of devices 79
3.2.2 Terminals becoming general-purpose devices 81
3.2.3 Some challenges 81
3.2.4 Concluding words on mobile devices 84
3.3 Relationship of EPC to radio networks 85
3.3.1 Overview of radio networks for mobile services 85
3.3.2 Functionality of radio networks 86
3.3.3 GSM 89
3.3.4 WCDMA 90
3.3.5 LTE 91
Chapter 4 EPS deployment scenarios and operator cases 95
4.1 Scenario 1: EPS with LTE deployment with existing 3GPP installations 96
4.2 Scenario 2: LTE and EPS for Greenfield operators 101
4.3 Scenario 3: LTE and EPS deployment for 3GPP2 operators 102
4.4 Scenario 4: WiMAX and WLAN operators 104
4.5 Scenario 5: Consideration for EPC-only deployment with existing 2G/3G accesses 105
Chapter 5 Services in EPS 107
5.1 Data services 107
5.1.1 A note on application development 109
5.2 Voice services 110
5.2.1 Voice services based on circuit-switched technology 111
5.2.2 Voice services with IMS technology 113
5.2.3 Realization of voice over LTE 115
5.2.4 Voice services using IMS technology 116
5.2.5 Single-radio voice call continuity 117
5.2.6 Circuit-switched fallback 118
5.2.7 Comparing SRVCC and CSFB 119
5.3 Messaging services 120
Part III: Key Concepts 122
Chapter 6 Session management and mobility 124
6.1 IP connectivity and session management 124
6.1.1 The IP connection 124
6.2 Session management, bearers and QoS aspects 134
6.2.1 General 134
6.2.2 The EPS bearer for E-UTRAN access 134
6.2.3 Session management for EPS and GERAN/UTRAN accesses 141
6.2.4 Session management for other accesses 142
6.3 Mobility principles 143
6.3.1 General 143
6.3.2 Mobility within 3GPP family of accesses 144
6.3.3 Mobility between E-UTRAN and HRPD 148
6.3.4 Generic mobility between 3GPP and non-3GPP accesses 151
6.4 Idle mode signalling reduction (ISR) 155
6.4.1 ISR activation 156
6.4.2 Paging 158
6.4.3 ISR deactivation 158
6.5 Identifiers and corresponding legacy IDs 159
6.5.1 Permanent subscriber identifiers 160
6.5.2 Temporary subscriber identifiers 160
6.5.3 Relation to subscription identifiers in 2G/3G 162
6.6 Pooling and overload protection 163
Chapter 7 Security 166
7.1 Introduction 166
7.2 Security services 167
7.2.1 Introduction 167
7.2.2 Security domains 168
7.3 Network access security 170
7.3.1 Introduction 170
7.3.2 Access security in E-UTRAN 170
7.3.3 Interworking with GERAN/UTRAN 176
7.3.4 Access security in trusted non-3GPP accesses 178
7.3.5 Access security in untrusted non-3GPP access 179
7.3.6 Special considerations for host-based mobility DSMIPv6 181
7.4 Network domain security 182
7.5 User domain security 184
7.6 Lawful intercept 184
Chapter 8 Quality of service, charging and policy control 187
8.1 Quality of service 187
8.1.1 General 187
8.1.2 QoS in E-UTRAN 188
8.1.3 Interworking with GERAN/UTRAN 197
8.1.4 QoS aspects when interworking with other accesses 198
8.2 Policy and charging control 199
8.2.1 Introduction 199
8.2.2 The PCC Architecture 200
8.2.3 Basic PCC concepts 203
8.2.4 Network vs. terminal-initiated QoS control 216
8.2.5 PCC and roaming 219
8.3 Charging 221
Chapter 9 Selection functions 232
9.1 Architecture overview for selection functions 232
9.2 Selection of MME, SGSN, serving GW and PDN GW 233
9.2.1 Selection procedure at a glance 233
9.2.2 Use of DNS infrastructure 236
9.2.3 MME selection 239
9.2.4 SGSN selection function for EPS 241
9.2.5 GW selection overview 242
9.2.6 PDN GW selection function 242
9.2.7 Serving GW selection function 245
9.2.8 Handover (non-3GPP access) and PDN GW selection 246
9.3 PCRF selection 247
Part IV: The Nuts and Bolts of EPC 250
Chapter 10 EPS network entities and interfaces 252
10.1 Network entities 254
10.1.1 eNodeB 255
10.1.2 Mobility management entity 255
10.1.3 Serving GW 256
10.1.4 PDN GW 256
10.1.5 Policy and charging rules function 257
10.2 Control plane between UE, eNodeB and MME 257
10.2.1 S1-MME 257
10.3 GTP-based interfaces 259
10.3.1 Control plane 259
10.3.2 MME & #8596
10.3.3 MME & #8596
10.3.4 Serving GW & #8596
10.3.5 SGSN & #8596
10.3.6 SGSN & #8596
10.3.7 SGSN & #8596
10.3.8 User plane 263
10.3.9 eNodeB & #8596
10.3.10 UE & #8596
10.3.11 UE & #8596
10.3.12 UE & #8596
10.3.13 UE & #8596
10.4 PMIP-based interfaces 266
10.4.1 Serving GW – PDN GW (S5/S8) 266
10.4.2 Trusted non-3GPP IP access – PDN GW (S2a) 267
10.4.3 ePDG – PDN GW (S2b) 269
10.5 DSMIPv6-based interfaces 270
10.5.1 UE – PDN GW (S2c) 270
10.6 HSS-related interfaces and protocols 271
10.6.1 General 271
10.6.2 MME – HSS (S6a) and SGSN – HSS (S6d) 272
10.7 AAA-related interfaces 273
10.7.1 General 273
10.7.2 AAA server – HSS (SWx) 274
10.7.3 Trusted non-3GPP access – 3GPP AAA server/proxy (STa) 276
10.7.4 Untrusted non-3GPP IP access – 3GPP AAA server/proxy (SWa) 277
10.7.5 ePDG – 3GPP AAA server/proxy (SWm) 279
10.7.6 PDN GW – 3GPP AAA server/proxy (S6b) 281
10.7.7 3GPP AAA proxy – 3GPP AAA server/proxy (SWd) 282
10.8 PCC-related interfaces 284
10.8.1 General 284
10.8.2 PCEF – PCRF (Gx) 284
10.8.3 BBERF – PCRF (Gxa/Gxc) 285
10.8.4 PCRF – AF (Rx) 286
10.8.5 PCRF – PCRF (S9) 287
10.8.6 SPR – PCRF (Sp) 289
10.9 EIR-related interfaces 290
10.9.1 MME-EIR and SGSN-EIR interfaces (S13 and S13') 290
10.10 I-WLAN-related interfaces 291
10.10.1 UE – ePDG (SWu) 291
10.11 ANDSF-related interfaces 292
10.11.1 Policy node 294
10.11.2 Discovery Information node 294
10.11.3 UE location node 295
10.11.4 Ext node 295
10.12 HRPD IW-related interfaces 295
10.12.1 Optimized handover and related interfaces (S101 and S103) 295
10.12.2 MME & #8596
10.12.3 Serving GW & #8596
10.13 Interface to external networks 298
10.13.1 General 298
10.13.2 Functions 299
Chapter 11 Protocols 301
11.1 Introduction 301
11.2 GPRS tunnelling protocol overview 301
11.2.1 Protocol structure 304
11.2.2 Control plane (GTPv2-C) 309
11.2.3 User plane (GTPv1-U) 313
11.2.4 Protocol format 314
11.3 Mobile IP 315
11.3.1 General 315
11.3.2 Host-based and network-based mobility mechanisms 318
11.3.3 Basic principles of mobile IP 318
11.3.4 Mobile IPv6 security 324
11.3.5 Packet format 325
11.3.6 Dual-stack operation 328
11.3.7 Additional MIPv6 features – route optimization 330
11.4 Proxy Mobile IPv6 331
11.4.1 General 331
11.4.2 Basic principles 332
11.4.3 PMIPv6 security 335
11.4.4 PMIPv6 packet format 336
11.4.5 Dual-stack operation 337
11.5 Diameter 338
11.5.1 Background 338
11.5.2 Protocol structure 338
11.5.3 Diameter nodes 339
11.5.4 Diameter sessions, connections and transport 340
11.5.5 Diameter request routing 342
11.5.6 Peer discovery 342
11.5.7 Diameter message format 343
11.6 Generic routing encapsulation 344
11.6.1 Background 344
11.6.2 Basic protocol aspects 344
11.6.3 GRE packet format 346
11.7 S1-AP 347
11.8 Non-access stratum (NAS) 348
11.8.1 EPS mobility management 348
11.8.2 EPS session management 349
11.8.3 Message structure 350
11.8.4 Security-protected NAS messages 351
11.8.5 Message transport 351
11.8.6 Future extensions and backward compatibility 351
11.9 IP security 352
11.9.1 Introduction 352
11.9.2 Encapsulated security payload and authentication header 353
11.9.3 Internet key exchange 356
11.9.4 IKEv2 mobility and multi-homing 357
11.10 Extensible authentication protocol 358
11.10.1 Overview 358
11.10.2 Protocol 359
11.11 Stream control transmission protocol 361
11.11.1 Background 361
11.11.2 Basic protocol features 362
11.11.3 Multi-streaming 364
11.11.4 Multi-homing 365
11.11.5 Packet structure 366
Chapter 12 Procedures 368
12.1 Attach and detach for E-UTRAN 368
12.1.1 Attach procedure for E-UTRAN 368
12.1.2 Detach procedure for E-UTRAN 371
12.2 Attach and detach for non-3GPP accesses 372
12.2.1 General 372
12.2.2 Attach procedure in untrusted non-3GPP access using PMIPv6 (S2b) 373
12.2.3 Detach procedure in untrusted non-3GPP access using PMIPv6 (S2b) 374
12.2.4 Attach procedure in trusted non-3GPP access using DSMIPv6 (S2c) 375
12.2.5 Detach procedure in trusted non-3GPP access using DSMIPv6 (S2c) 376
12.3 Tracking Area update 377
12.3.1 Tracking Area update procedure 377
12.3.2 TA update with MME change 378
12.4 Handover procedure 381
12.4.1 Basic handover 381
12.4.2 Phases and details of handover procedure 386
12.4.3 Handover in EPS with non-3GPP accesses 397
12.5 Bearer and QoS-related procedures 411
12.5.1 General 411
12.5.2 Bearer procedures for E-UTRAN 411
12.5.3 Bearer procedures for GERAN/UTRAN 414
12.5.4 Interworking with dynamic QoS mechanisms in other accesses 417
12.6 Single radio voice call continuity 417
12.6.1 SRVCC from E-UTRAN to GERAN or UTRAN 418
12.6.2 SRVCC from E-UTRAN to 1×RTT 420
12.7 CS fallback 421
Part V: Conclusion and Future of EPS 424
Chapter 13 Conclusions and looking ahead 426
13.1 Concluding words 429
References 430
Appendix A: Standards bodies associated with EPS 438
Appendix B: SAE/EPC specifications 444
Appendix C: Mobile broadband application development 450
Appendix D: Abbreviations 452
Index 460
A 460
B 460
C 460
D 460
E 461
F 461
G 461
H 461
I 462
J 462
L 462
M 462
N 463
O 463
P 463
Q 464
R 464
S 464
T 465
U 465
V 465
W 465
X 465
| Erscheint lt. Verlag | 1.8.2009 |
|---|---|
| Sprache | englisch |
| Themenwelt | Sachbuch/Ratgeber |
| Mathematik / Informatik ► Informatik ► Netzwerke | |
| Mathematik / Informatik ► Informatik ► Theorie / Studium | |
| Naturwissenschaften ► Physik / Astronomie ► Elektrodynamik | |
| Technik ► Elektrotechnik / Energietechnik | |
| Technik ► Nachrichtentechnik | |
| ISBN-10 | 0-08-088870-4 / 0080888704 |
| ISBN-13 | 978-0-08-088870-5 / 9780080888705 |
| Haben Sie eine Frage zum Produkt? |
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