- ホーム
- > 洋書
- > 英文書
- > Science / Mathematics
Full Description
The field of telecommunications is becoming ever more complex. In order to manage the new Telecom industry it is necessary not only to understand its 3 main components, namely the end users, the technology and networks, and the business aspects, but also their vital inter-relationships.
Complexity leads to uncertainty, and one effect of uncertainty is for people to underestimate the complexity of the business and the technology. This book takes a holistic approach to the subject and can be used as a tool for decreasing this uncertainty. During 2000 many operators paid extremely high sums of money for 3G licenses in a number of European countries, supposing a potential corresponding and balancing revenue from mobile services in the new frequency band. Obviously today the licenses are questionable. Consequently, suppliers and operators were forced to reduce their international work force.
What are the underlying reasons? Since the true rate and level of development was hardly foreseen by anyone, the picture is complex, including factors such as psychology and belief in a new economy. It is immediately clear that the end user impact has been severely under-estimated. It is also clear that the expected development has and is happening, with more speed than expected, and continues to be complemented with solutions such as wireless LANs.
This book treats the paradigm shift from a number of angles: user needs and demands, deregulation of telecom and the convergence between telecommunications, data communications and the media industry, the service plan, service implementation, QoS, and Security.
Understanding Changing Telecommunications focuses on the overall principles and context of the new telecommunications world rather than on high-level technical descriptions in order to aid the understanding and development of the next generation of telecom networks. e.g. multimedia over IP and 3G.
Discusses the development of telecommunications up until 2005
Provides a holistic view of the world of telecommunications
Covers three main areas: End-users, Technologies and Networks, and Telecom Business, and their vital inter-relationships
Offers support and advice for those needing to implement business plans
Essential reading for staff with operators and providers involved in the telecom networks, especially management, planning and design, development, integration and training, as well as Business analysts and investors keen to understand the current state of the Telecom industry.
Contents
Preface xi
About the Author xiii
References and Acknowledgements xv
Glossary xxi
1 Introduction 1
1.1 The Book in Brief 1
1.2 A Dynamic Situation 10
1.3 Success Factors for the Growth of Mobile Services 11
1.4 Comment on Terminology 12
2 End-User Needs and Demands 15
2.1 Objectives 15
2.2 The Role of the Unpredictable (?) End User 18
2.3 User Analysis and Segmentation 19
2.4 Basic Needs Model 33
2.5 Mapping of Needs and Services 35
2.6 The Human End User as a Traffic Generator and Receiver 41
2.7 The Future Most Common End User: A Machine 43
2.8 What are the Service Drivers? 45
2.9 User Perception 46
2.10 Summary 47
3 Networks and Technologies 49
3.1 Objectives 49
3.2 What is a Network? 51
3.3 What is a Vertical Network? 54
3.4 The Convergence (or Collision?) 57
3.5 What is a Horizontal Network? 63
3.6 Fundamental Plans 65
3.7 A Techno-Economic View of the Convergence 70
3.8 Adaptation of the Basic Triangle and FPs to the Converged Multi-Service Network 71
3.9 The Connectivity Layer 75
3.10 The Control Layer 78
3.11 The Service Layer 78
3.12 The Distributed Network Dimension 83
3.13 The Processing Dimension 87
3.14 Key Enablers 89
3.15 General Enabler Development 93
3.16 Enabler Overview 93
4 Telecom Business 99
4.1 Objectives 99
4.2 The Telemanagement Forum 101
4.3 Adopting a Telecom Business Perspective 105
4.4 Telecom Enterprise Strategy: Roles for Positioning 108
4.5 Tools for Profitability Calculations and Business Cases 122
4.6 Revenue 130
4.7 Cost Efficiency 135
5 Services 147
5.1 Introduction 147
5.2 The Service Plan 154
5.3 A Common Segmentation of Services for Mobile Internet 157
5.4 Service Segmentation for Planning 159
5.5 Value-added Services 165
5.6 Economy of Service by Means of Caching 166
5.7 Economy of Service by Means of Saving Bandwidth 166
5.8 Bandwidth Requirements 170
5.9 Security 172
5.10 Future Service Development 172
5.11 Pricing: Charging in the New Telecom World 174
5.12 The Service Plan versus the New Architecture 177
5.13 The Core Network and the Service Plan 177
5.14 The Access Network and the Service Plan 180
5.15 Telecom Management and the Service Plan 183
6 Security 185
6.1 Objectives 185
6.2 The Goals of the User and Actor. Terminology 186
6.3 The Problem 187
6.4 Non-Availability for Non-Security Reasons 194
6.5 Connecting Security Terms into Telecommunication 194
6.6 Main Ways to Implement Security 196
6.7 Integrity and Confidentiality by Access Control - Authentication 202
6.8 Integrity by Access Control - Authorization in Enterprises 205
6.9 Integrity by Access Control - Firewalls 205
6.10 Confidentiality: Encryption and Key Management 207
6.11 Confidentiality by Tunnelling 210
6.12 Confidentiality and Integrity by IPsec 212
6.13 Confidentiality and Integrity for Mail by S/MIME 214
6.14 Applications and Solutions 215
6.15 Summary with IPsec and FP Focus 219
7 Quality of Service 221
7.1 Objective 221
7.2 Introduction 221
7.3 Perception of QoS 224
7.4 Threats to QoS 229
7.5 QoS Enablers 237
7.6 QoS at the Application Level 243
7.7 Implementation of QoS in UMTS 244
8 Service Implementation 247
8.1 Objectives 247
8.2 Chapter Structure 249
8.3 Target Network 250
8.4 Development Tracks 254
8.5 Introduction to Packet Design 256
8.6 The Role of Fundamental Technical Plans in Packet Design 258
8.7 Top-Down Approach to Packet Design 259
8.8 Specific Fundamental Technical Plans 266
8.9 Convergence Between Fundamental Technical Plans 275
8.10 Traffic Cases 280
9 Service Network 285
9.1 Objectives 285
9.2 Connection to Preceding Chapters 285
9.3 What is a Service Network? 286
9.4 Service Network Domain and Principles 288
9.5 Terminology 290
9.6 The Architecture of Service Networks 290
9.7 The Needs of the User Domain 295
9.8 The Needs of the Service Network Owner 296
9.9 Service Network Implementation 299
9.10 The (IP) Service Network Support Entities 300
9.11 Examples of Service Implementation 301
10 Terminals 305
10.1 What is a Terminal? 305
10.2 Business Aspects 308
10.3 History 309
10.4 Terminals for Mobile Networks 309
10.5 PDA Development 311
10.6 Terminal Convergence 312
10.7 The Changing Role of Terminating Devices 312
10.8 What is a Customer Premises Network? 313
10.9 Some Enablers 315
10.10 Terminal Functionality - Example 317
10.11 The Future 318
11 Edge Nodes 319
11.1 Introduction 319
11.2 Access and Backbone Networks 321
11.3 MGW Interfaces 323
11.4 Media Gateway Tasks 324
11.5 Summary 329
12 Packet Backbone 331
12.1 Objectives 331
12.2 Service Plan versus Packet Backbone 332
12.3 Capacity Development 334
12.4 Control Functions in the Packet Backbone 336
12.5 The Distributed Dimension 339
12.6 Traffic 339
12.7 ATM Solutions 340
12.8 IP Routing 342
12.9 IP QoS 344
12.10 Multi Protocol Label Switching (MPLS) 347
12.11 Multi-Layer Control 348
13 Access Network 351
13.1 Objectives 351
13.2 Introduction 351
13.3 What is an Access Network? 352
13.4 Access System Fragmentation 357
13.5 Unification 358
13.6 The Distributed Dimension 359
13.7 The Layered Dimension 361
13.8 Fundamental Plans in Access Networks 363
13.9 Mobility 364
13.10 Access Technologies in Mobile Networks 364
13.11 System Evolution 366
13.12 Fixed Systems 374
13.13 Fibre-Based Systems 376
13.14 Ethernet 376
13.15 Combined ADSL over Copper and Ethernet Over Fibre Solution 377
13.16 Cable Modem 378
13.17 WLAN 379
13.18 Satellite Technologies 381
13.19 High Speed Fixed Radio 382
14 Control Network 385
14.1 Introduction 385
14.2 The Environment of the Control Network 387
14.3 Fundamental Plans in the Control Network 388
14.4 A Simple Target Control Network Signalling 390
14.5 Circuit Mode Domain 394
14.6 Packet Mode Domain 397
14.7 IMS Domain = IP Multimedia Subsystem 399
14.8 HLR/HSS for all Previous Domains 402
14.9 The Domain of (Voice and) Signalling Over IP 402
14.10 Common Support Functions 406
15 Interconnection 409
15.1 Objectives 409
15.2 Introduction 410
15.3 Interconnection in Tele-Centric Fixed Voice Networks 413
15.4 Definition of an Actor Interface Reference Point 414
15.5 Service Level Agreements 415
15.6 Service Interworking 416
15.7 QoS Interworking 417
15.8 PDP Context Activation for Connection to a Data Network 418
15.9 Security Interworking 419
15.10 Signalling Interworking 420
15.11 Routing 421
15.12 Mobility Management 423
15.13 Charging and Accounting 424
15.14 Possible Interworking UMTS-WLAN 426
16 Telecom Management - Operations 429
16.1 Introduction 429
16.2 The Management System 431
16.3 Basic Process Part 438
16.4 The TMN Functional Areas 441
16.5 Service Management 443
16.6 TM Operations from a Roce Perspective 445
16.7 Customer Care and Data Warehousing 448
16.8 Security Management 451
16.9 QoS Management 452
16.10 Terminal Management 453
16.11 Access Network Management 454
16.12 Management of Layered and Serial Interworking 454
16.13 Conclusions 457
Appendix 1 Web Services and a Service-Oriented Architecture 459
Appendix 2 Financial Calculations 463
Appendix 3 Development Tracks 473
Appendix 4 Dimensioning Media Gateways and Associated Telephony Servers 481
Index 499
