The 3G IP multimedia subsystem (IMS) : merging the Internet and the cellular worlds / Gonzalo Camarillo, Miguel A. García-Martín.

Format:

Book

Author/Creator:

Camarillo, Gonzalo.

Contributor:

García-Martín, Miguel A.

Language:

English

Subjects (All):

Wireless communication systems.

Mobile communication systems.

Multimedia communications.

Physical Description:

xxvi, 427 pages : illustrations ; 25 cm

Edition:

Second edition.

Place of Publication:

Chichester, England ; Hoboken, NJ : J. Wiley & Sons, [2006]

Summary:

The 3G IP Multimedia Subsystem (IMS): Merging the Internet and the Cellular Worlds, Second Edition is an updated version of the best-selling guide to this exciting technology that will merge the Internet with the cellular world, ensuring the availability of Internet technologies such as the web, email, instant messaging, presence and videoconferencing nearly everywhere. In this thoroughly revised overview of the IMS and its technologies, goals, history, vision, the organizations involved in its standardization and architecture, the authors first describe how each technology works on the Internet and then explain how the same technology is adapted to work in the IMS, enabling readers to take advantage of any current and future Internet service.

Key features of the Second Edition include: New chapter on Next Generation Networks, including an overview on standardization, the architecture, and PSTN/ISDN simulation services. Fully updated chapter on the Push-to-talk over Cellular (PoC) service, covering the standardization in the Open Mobile Alliance (OMA), architecture, PoC session types, user plane, and the Talk Burst Control Protocol. Several expanded sections, including discussion of the role of the Open Mobile Alliance in the standardization process, IPv4 support in IMS, a description of the IMS Application Layer Gateway and the Transition Gateway, and a description of the presence data model. Updated material on the presence service, session-based instant messages with the Message Session Relay Protocol (MSRP), and the XML Configuration Access Protocol (XCAP). Engineers, programmers, business managers, marketing representatives, and technically aware users will all find this to be an indispensable guide to IMS and the business model behind it.

Contents:

1 IMS Vision: Where Do We Want to Go? 5

1.1 The Internet 5

1.2 The Cellular World 6

1.3 Why do we need the IMS? 6

1.4 Relation between IMS and non-IMS Services 8

2 The History of the IMS Standardization 9

2.1 Relations between IMS-related Standardization Bodies 9

2.2 Internet Engineering Task Force 10

2.2.1 Structure of the IETF 10

2.2.2 Working Group Operations 11

2.2.3 Types of RFCs 12

2.3 Third Generation Partnership Project 13

2.3.1 3GPP Structure 14

2.3.2 3GPP Deliverables 15

2.4 Third Generation Partnership Project 2 16

2.4.1 3GPP2 Structure 16

2.4.2 3GPP2 Deliverables 16

2.5 IETF-3GPP/3GPP2 Collaboration 17

2.5.1 Internet Area 18

2.5.2 Operations and Management Area 18

2.5.3 Transport Area 19

2.6 Open Mobile Alliance 19

2.6.1 OMA Releases and Specifications 20

2.6.2 Relationship between OMA and 3GPP/3GPP2 21

2.6.3 Relationship between OMA and the IETF 22

3 General Principles of the IMS Architecture 23

3.1 From Circuit-switched to Packet-switched 23

3.1.1 GSM Circuit-switched 23

3.1.2 GSM Packet-switched 24

3.2 IMS Requirements 24

3.2.1 IP Multimedia Sessions 25

3.2.2 QoS 25

3.2.3 Interworking 26

3.2.4 Roaming 26

3.2.5 Service Control 26

3.2.6 Rapid Service Creation 27

3.2.7 Multiple Access 27

3.3 Overview of Protocols used in the IMS 27

3.3.1 Session Control Protocol 27

3.3.2 The AAA Protocol 28

3.3.3 Other Protocols 29

3.4 Overview of IMS Architecture 29

3.4.1 The Databases: the HSS and the SLF 30

3.4.2 The CSCF 31

3.4.3 The AS 33

3.4.4 The MRF 35

3.4.5 The BGCF 35

3.4.6 The IMS-ALG and the TrGW 35

3.4.7 The PSTN/CS Gateway 36

3.4.8 Home and Visited Networks 38

3.5 Identification in the IMS 39

3.5.1 Public User Identities 40

3.5.2 Private User Identities 40

3.5.3 The Relation between Public and Private User Identities 41

3.5.4 Public Service Identities 42

3.6 SIM, USIM, and ISIM in 3GPP 42

3.6.1 SIM 43

3.6.2 USIM 43

3.6.3 ISIM 45

Part II The Signaling Plane in the IMS 47

4 Session Control on the Internet 51

4.1 SIP Functionality 51

4.1.1 Session Descriptions and SDP 51

4.1.2 The Offer/Answer Model 52

4.1.3 SIP and SIPS URIs 53

4.1.4 User Location 54

4.2 SIP Entities 55

4.2.1 Forking Proxies 57

4.2.2 Redirect Servers 58

4.3 Message Format 59

4.4 The Start Line in SIP Responses: the Status Line 59

4.5 The Start Line in SIP Requests: the Request Line 60

4.6 Header Fields 60

4.7 Message Body 62

4.8 SIP Transactions 63

4.9 Message Flow for Session Establishment 64

4.10 SIP Dialogs 67

4.10.1 Record-Route, Route, and Contact Header Fields 70

4.11 Extending SIP 70

4.11.1 New Methods 72

4.12 Caller Preferences and User Agent Capabilities 72

4.13 Reliability of Provisional Responses 73

4.14 Preconditions 76

4.15 Event Notification 77

4.15.1 High Notification Rates 79

4.16 Signaling Compression 80

4.16.1 SigComp Extended Operations 81

4.16.2 Static SIP/SDP Dictionary 82

4.17 Content Indirection 82

4.18 The REFER Method 85

5 Session Control in the IMS 87

5.1 Prerequisites for Operation in the IMS 88

5.2 IPv4 and IPv6 in the IMS 89

5.3 IP Connectivity Access Network 90

5.4 P-CSCF Discovery 91

5.5 IMS-level Registration 93

5.5.1 IMS Registration with an ISIM 93

5.5.2 IMS Registration with a USIM 101

5.6 Subscription to the reg Event State 106

5.7 Basic Session Setup 109

5.7.1 The IMS Terminal Sends an INVITE Request 113

5.7.2 The Originating P-CSCF Processes the INVITE Request 120

5.7.3 The Originating S-CSCF Processes the INVITE Request 121

5.7.4 The Terminating LCSCF Processes the INVITE Request 125

5.7.5 The Terminating S-CSCF Processes the INVITE Request 126

5.7.6 The Terminating P-CSCF Processes the INVITE Request 129

5.7.7 The Callee's Terminal Processes the INVITE Request 129

5.7.8 Processing the 183 Response 133

5.7.9 The Caller's IMS Terminal Processes the 183 Response 133

5.7.10 The Callee's IMS Terminal Processes the PRACK request 134

5.7.11 Alerting the Callee 137

5.8 Application Servers: Providing Services to Users 142

5.8.1 Generalities about Application Servers 142

5.8.2 Types of Application Servers 143

5.8.3 The Session Setup Model through Application Servers 147

5.8.4 Filter Criteria 155

5.8.5 An Example of Service Execution 159

5.9 Interworking 162

5.9.1 SIP-PSTN Interworking 162

5.9.2 Interworking with Non-IMS SIP-based Networks 165

5.10 Emergency Sessions 169

6 AAA on the Internet 171

6.1 Authentication, Authorization, and Accounting 171

6.2 AAA Framework on the Internet 171

6.3 The Diameter Protocol 173

6.3.1 Diameter Sessions 174

6.3.2 The Format of a Diameter Message 175

6.3.3 Attribute Value Pairs 176

6.3.4 The AAA and AAAS URIs 177

6.3.5 Diameter Base Protocol Commands 178

6.3.6 Diameter Base Protocol AVPs 180

7 AAA in the IMS 183

7.1 Authentication and Authorization in the IMS 183

7.2 The Cx and Dx Interfaces 183

7.2.1 Command Codes Defined in the Diameter Application for the Cx Interface 185

7.2.2 AVPs Defined in the Diameter Application for the Cx Interface 188

7.2.3 The User Profile 192

7.3 The Sh Interface 194

7.3.1 Command Codes Defined in the Diameter Application for the Sh Interface 195

7.3.2 AVPs Defined in the Diameter Application for the Sh Interface 197

7.4 Accounting 198

7.5 Charging Architecture 198

7.6 Offline Charging 200

7.6.1 IMS Terminal in a Visited Network 200

7.6.2 IMS Terminal in its Home Network 202

7.6.3 The Rf Interface 205

7.7 Online Charging 206

7.7.1 S-CSCF 206

7.7.2 Application Servers and the MRFC 207

8 Security on the Internet 213

8.1 HTTP Digest 213

8.1.1 Security Properties of Digest 215

8.2 Certificates 216

8.3 TLS 216

8.3.1 SIP Usage 217

8.4 S/MIME 218

8.4.1 Self-signed Certificates 220

8.5 Authenticated Identity Body 221

8.6 IPsec 224

8.6.1 ESP and AH 224

8.6.2 Tunnel and Transport Modes 226

8.6.3 Internet Key Exchange 226

8.7 Privacy 227

8.8 Encrypting Media Streams 228

8.8.1 MIKEY 228

9 Security in the IMS 231

9.1 Access Security 231

9.1.1 Authentication and Authorization 231

9.1.2 Authentication and Authorization with ISIM 232

9.1.3 Authentication and Authorization with USIM 234

9.1.4 Security Association Establishment 235

9.2 Network Security 237

10 Policy on the Internet 239

10.1 The COPS Protocol 239

10.2 The Outsourcing Model 241

10.3 The Configuration Model 242

11 Policy in the IMS 245

11.1 SIP Procedures 245

11.2 Media Authorization 246

11.2.1 The Policy Decision Function 247

11.2.2 Media Authorization Token 247

11.3 Proxy Access to SDP Bodies 250

11.4 Initialization Procedure 250

12 Quality of Service on the Internet 251

12.1 Integrated Services 251

12.1.1 RSVP 251

12.1.2 State in the Network 253

12.2 Differentiated Services 253

13 Quality of Service in the IMS 255

13.1 Instructions to Perform Resource Reservations 255

13.1.1 Proxy Modifying Bodies 257

13.2 Reservations by the Terminals 257

13.3 Network Authorization 259

13.4 QoS in the Network 259

Part III The Media Plane in the IMS 261

14 Media Encoding 265

14.1 Speech Encoding 265

14.1.1 Pulse Code Modulation 266

14.1.2 Linear Prediction 267

14.1.3 GSM-FR 268

14.1.4 AMR 269

14.1.5 AMR-WB 272

14.1.6 SMV 272

14.2 Video Encoding 277

14.2.1 Common Video Codecs 278

14.2.2 H.263 279

14.2.3 Image Encoding 279

14.2.4 Temporal Correlation 279

14.2.5 Spatial Correlation 280

14.3 Text Encoding 280

14.4 Mandatory Codecs in the IMS 281

15 Media Transport 283

15.1 Reliable

Media Transport 283

15.2 Unreliable Media Transport 284

15.2.1 DCCP 284

15.2.2 RTP 285

15.2.3 RTCP 287

15.2.4 SRTP 288

15.3 Media Transport in the IMS 288

Part IV Building Services with the IMS 291

16 The Presence Service on the Internet 295

16.1 Overview of the Presence Service 295

16.1.1 The pres URI 296

16.2 The Presence Life Cycle 297

16.3 Presence Information Data Format 298

16.3.1 Contents of the PIDF 299

16.4 The Presence Data Model for SIP 299

16.5 Mapping the SIP Presence Data Model to the PIDF 301

16.6 Rich Presence Information Data Format 303

16.6.1 Contents of the RPID 303

16.7 CIPID 304

16.8 Timed Presence Extension to the PIDF 306

16.9 Presence Capabilities 307

16.9.1 Service Capabilities 308

16.9.2 Device Capabilities 309

16.9.3 An Example of the Presence Capabilities Document 309

16.10 Presence Publication 311

16.11 Presence Subscription and Notification 312

16.12 Watcher Information 312

16.13 URI-list Services and Resource Lists 314

16.14 XML Configuration Access Protocol 317

16.14.1 XCAP Application Usage 318

16.15 Presence Optimizations 319

16.15.1 Partial Notification of Presence Information 319

16.15.2 Event Notification Filtering 320

17 The Presence Service in the IMS 323

17.1 The Foundation of Services 323

17.2 Presence Architecture in the IMS 323

17.3 Watcher Subscription 325

17.4 Subscription to Watcher Information 326

17.5 Presence Publication 326

17.6 Presence Optimizations 327

17.7 The Ut Interface 328

18 Instant Messaging on the Internet 329

18.1 The im URI 329

18.2 Modes of Instant Messages 330

18.3 Pager-mode Instant Messaging 330

18.3.1 Congestion Control with Message 330

18.4 Session-based Instant Messaging 331

18.4.1 The MSRP and MSRPS URLs 332

18.4.2 MSRP Overview 332

18.4.3 Extensions to SDP due to MSRP 333

18.4.4 MSRP Core Functionality 336

18.4.5 Status and Reports 337

18.4.6 MSRP Relays 340

19 The Instant Messaging Service in the IMS 345

19.1 Pager-mode Instant Messaging in the IMS 345

19.2 Session-based Instant Messaging in the IMS 346

20 Push-to-Talk over Cellular 351

20.1 PoC Standardization 351

20.2 IETF Work Relevant to PoC 352

20.2.1 URI-list Services 352

20.2.2 Event Package for PoC Settings 355

20.2.3 SIP Header Fields 357

20.3 Architecture 357

20.4 Registration 359

20.5 PoC Server Roles 359

20.6 PoC Session Types 360

20.6.1 One-to-one PoC Sessions 361

20.6.2 Ad-hoc PoC Group 362

20.6.3 Pre-arranged PoC Group 363

20.6.4 Chat PoC Group 363

20.7 Adding Users to a PoC Session 365

20.8 Group Advertisements 366

20.9 Session Establishment Types 366

20.10 Answer Modes 367

20.11 Right-to-speak Indication Types 369

20.12 Participant Information 370

20.13 Barring and Instant Personal Alerts 370

20.14 The User Plane 371

20.14.1 Media Encoding 371

20.14.2 Talk Burst Control Protocol 371

20.15 Simultaneous PoC Sessions 375

21 Next Generation Networks 377

21.1 NGN Overview 377

21.2 The Core IMS in NGN 379

21.2.1 New SIP Functionality 382

21.2.2 Unneeded Functionality 382

21.3 PSTN/ISDN Simulation Services 383

21.3.1 Communication Diversion (CDIV) and Communication Forwarding 383

21.3.2 Conference (CONF) 383

21.3.3 Message Waiting Indication (MWI) 385

21.3.4 Originating Identification Presentation/Restriction (OIP, OIR) 385

21.3.5 Terminating Identification Presentation/Restriction (TIP, TIR) 385

21.3.6 Communication Waiting (CW) 386

21.3.7 Communication Hold (HOLD) 386

21.3.8 Anonymous Communication Rejection (ACR) and Communication Barring (CB) 386

21.3.9 Advice of Charge (AoC) 386

21.3.10 Completion of Communications to Busy Subscriber (CCBS) and Completion of Communications on No Reply (CCNR) 387

21.3.11 Malicious Communication Identification (MCID) 387

21.3.12 Explicit Communication Transfer (ECT) 387

21.3.13 User Settings in PSTN/ISDN Simulation Services 388

Appendix A The 3GPP2 IMS 389

A.2 The Multimedia Domain (MMD) 389

A.3 Architecture of the 3GPP2 IMS 390

Appendix B List of IMS-related Specifications 393

B.2 3GPP Specifications 393

B.3 3GPP2 Specifications 394

B.4 ETSI NGN Specifications 394.

Notes:

Includes bibliographical references (pages [401]-417) and index.

ISBN:

0470018186

OCLC:

61651865

Publisher Number:

9780470018187