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Summary
Summary
Mobile satellite services are set to change with the imminent launch of satellite personal communication services (S-PCS), through the use of non-geostationary satellites. This new generation of satellites will be placed in low earth orbit or medium earth orbit, hence, introducing new satellite design concepts. One of the first texts to cover this rapidly evolving field, this text provides the reader with an overview of mobile satellite systems, from their initial introduction (Inmarsat), current satellite-PCS (referring to such systems as Globalstar), through to Satellite-UMTS and an understanding of the following:
* The design concepts associated with non-geostationary satellite systems (constellation, link budgets, Doppler)
* The concepts of UMTS (network architecture, aims, in the context of IMT-2000) and the role foreseen for the satellite component (complementary to terrestrial network, network extension, global availability)
* Inter-working between satellite and terrestrial networks (network architecture, ATM Adaptation Layer)
* Radio interface technologies (WB-CDMA, TDMA, transmission environment)
* Regulatory issues
* Future services and applications
* Potential satellite markets (prediction techniques, effect of tariffing policies on potential market)
With leading edge information, this valuable resource will be indispensable to researchers, engineers, operators and market evaluators in satellite service industries and research institutions, as well as postgraduates and research students in the field.
Author Notes
Ray E. Sheriff is the author of Mobile Satellite Communication Networks, published by Wiley. Y. Fun Hu is the author of Mobile Satellite Communication Networks, published by Wiley.
Table of Contents
Preface | p. ix |
Acknowledgements | p. xi |
Figures | p. xiii |
Tables | p. xvii |
1 Mobile Communication System Evolution | p. 1 |
1.1 Historical Perspective | p. 1 |
1.2 Cellular Systems | p. 2 |
1.2.1 Basic Concepts | p. 2 |
1.2.2 First-Generation (1G) Systems | p. 6 |
1.2.3 Second-Generation (2G) Systems | p. 9 |
1.2.4 Evolved Second-Generation (2G) Systems | p. 21 |
1.3 Cordless Telephones | p. 26 |
1.3.1 Background | p. 26 |
1.3.2 Cordless Telephone-2 (CT-2) | p. 27 |
1.3.3 Digital Enhanced Cordless Telecommunications (DECT) | p. 28 |
1.3.4 Personal Handyphone System (PHS) | p. 30 |
1.4 Third-Generation (3G) Systems | p. 30 |
1.4.1 International Mobile Telecommunications-2000 (IMT-2000) | p. 30 |
1.4.2 Universal Mobile Telecommunications System (UMTS) | p. 35 |
1.5 Fourth-Generation (4G) Systems | p. 40 |
References | p. 41 |
2 Mobile Satellite Systems | p. 43 |
2.1 Introduction | p. 43 |
2.1.1 Current Status | p. 43 |
2.1.2 Network Architecture | p. 44 |
2.1.3 Operational Frequency | p. 49 |
2.1.4 Logical Channels | p. 49 |
2.1.5 Orbital Types | p. 50 |
2.2 Geostationary Satellite Systems | p. 52 |
2.2.1 General Characteristics | p. 52 |
2.2.2 Inmarsat | p. 56 |
2.2.3 Eutelsat | p. 61 |
2.2.4 Asia Cellular Satellite, Thuraya and Other Systems | p. 63 |
2.3 Little Leo Satellites | p. 65 |
2.3.1 Regulatory Background | p. 65 |
2.3.2 Orbcomm | p. 66 |
2.3.3 E-Sat | p. 67 |
2.3.4 Leo One | p. 68 |
2.3.5 Other Systems | p. 68 |
2.4 Satellite-Personal Communication Networks (S-PCN) | p. 69 |
2.4.1 General Characteristics | p. 69 |
2.4.2 Iridium | p. 70 |
2.4.3 Globalstar | p. 71 |
2.4.4 New Ico | p. 74 |
2.4.5 Constellation Communications | p. 77 |
2.4.6 Ellipso | p. 77 |
References | p. 81 |
3 Constellation Characteristics and Orbital Parameters | p. 83 |
3.1 Satellite Motion | p. 83 |
3.1.1 Historical Context | p. 83 |
3.1.2 Equation of Satellite Orbit--Proof of Kepler's First Law | p. 84 |
3.1.3 Satellite Swept Area per Unit Time--Proof of Kepler's Second Law | p. 86 |
3.1.4 The Orbital Period--Proof of Kepler's Third Law | p. 87 |
3.1.5 Satellite Velocity | p. 88 |
3.2 Satellite Location | p. 89 |
3.2.1 Overview | p. 89 |
3.2.2 Satellite Parameters | p. 90 |
3.2.3 Satellite Location in the Orbital Plane | p. 91 |
3.2.4 Satellite Location with Respect to the Rotating Earth | p. 93 |
3.2.5 Satellite Location with Respect to the Celestial Sphere | p. 94 |
3.2.6 Satellite Location with Respect to Satellite-Centred Spherical Co-ordinates | p. 95 |
3.2.7 Satellite Location with Respect to the Look Angles | p. 97 |
3.2.8 Geostationary Satellite Location | p. 100 |
3.3 Orbital Perturbation | p. 101 |
3.3.1 General Discussion | p. 101 |
3.3.2 Effects of the Moon and the Sun | p. 101 |
3.3.3 Effects of the Oblate Earth | p. 103 |
3.3.4 Atmospheric Drag | p. 104 |
3.4 Satellite Constellation Design | p. 104 |
3.4.1 Design Considerations | p. 104 |
3.4.2 Polar Orbit Constellation | p. 106 |
3.4.3 Inclined Orbit Constellation | p. 111 |
References | p. 114 |
4 Channel Characteristics | p. 115 |
4.1 Introduction | p. 115 |
4.2 Land Mobile Channel Characteristics | p. 115 |
4.2.1 Local Environment | p. 115 |
4.2.2 Narrowband Channel Models | p. 118 |
4.2.3 Wideband Channel Models | p. 127 |
4.3 Aeronautical Link | p. 128 |
4.4 Maritime Link | p. 129 |
4.5 Fixed Link | p. 129 |
4.5.1 Tropospheric Effects | p. 129 |
4.5.2 Ionospheric Effects | p. 142 |
References | p. 143 |
5 Radio Link Design | p. 147 |
5.1 Introduction | p. 147 |
5.2 Link Budget Analysis | p. 148 |
5.2.1 Purpose | p. 148 |
5.2.2 Transmission and Reception | p. 148 |
5.2.3 Noise | p. 152 |
5.2.4 Satellite Transponder | p. 158 |
5.3 Modulation | p. 163 |
5.3.1 Overview | p. 163 |
5.3.2 Phase Shift Keying | p. 163 |
5.3.3 Minimum Shift Keying | p. 168 |
5.3.4 Quadrature Amplitude Modulation (QAM) | p. 168 |
5.4 Channel Coding | p. 168 |
5.4.1 Background | p. 168 |
5.4.2 Block Codes | p. 169 |
5.4.3 Convolutional Codes | p. 174 |
5.4.4 Interleaving | p. 180 |
5.4.5 Concatenated Codes | p. 181 |
5.4.6 Turbo Codes | p. 181 |
5.4.7 Automatic Repeat Request Schemes | p. 182 |
5.5 Multiple Access | p. 184 |
5.5.1 Purpose | p. 184 |
5.5.2 FDMA | p. 186 |
5.5.3 TDMA | p. 186 |
5.5.4 CDMA | p. 188 |
5.5.5 Contention Access Schemes | p. 193 |
5.5.6 S-UMTS/IMT-200 Candidate Solutions | p. 194 |
References | p. 195 |
6 Network Procedures | p. 197 |
6.1 Introduction | p. 197 |
6.2 Signalling Protocols | p. 198 |
6.2.1 Overview of GSM Signalling Protocol Architecture | p. 198 |
6.2.2 S-PCN Interfaces and Signalling Protocol Architecture | p. 199 |
6.3 Mobility Management | p. 201 |
6.3.1 Satellite Cells and Satellite Location Areas | p. 201 |
6.3.2 Location Management | p. 202 |
6.3.3 Handover Management | p. 220 |
6.4 Resource Management | p. 224 |
6.4.1 Objectives | p. 224 |
6.4.2 Effects of Satellite System Characteristics | p. 225 |
6.4.3 Effects of Mobility | p. 226 |
6.4.4 Resource Allocation Strategies | p. 227 |
6.4.5 Network Operations and Procedures | p. 231 |
References | p. 243 |
7 Integrated Terrestrial-Satellite Mobile Networks | p. 247 |
7.1 Introduction | p. 247 |
7.2 Integration with PSTN | p. 248 |
7.2.1 Introduction | p. 248 |
7.2.2 Gateway Functions and Operations | p. 248 |
7.2.3 Protocol Architecture of SSN7 | p. 249 |
7.2.4 Access Functions | p. 253 |
7.3 Integration with GSM | p. 254 |
7.3.1 Introduction | p. 254 |
7.3.2 Integration Requirements | p. 256 |
7.3.3 Integration Scenarios | p. 258 |
7.3.4 Impact of Integration Scenarios on the Handover Procedure | p. 261 |
7.3.5 Impact of Integration Scenarios on the Location Management Procedure | p. 275 |
7.3.6 Impact of Integration Scenarios on the Call Set-up Procedure | p. 280 |
7.3.7 The Role of Dual-mode Terminal in Terrestrial/S-PCN Integration | p. 283 |
7.4 Integration with Third Generation (3G) Networks | p. 287 |
7.4.1 Concept of Interworking Units | p. 287 |
7.4.2 The Radio-Dependent and Radio-Independent Concept | p. 288 |
7.4.3 Satellite Integration with UMTS--a UTRAN Approach | p. 289 |
7.4.4 Satellite Integration with GSM/EDGE--a GERAN Approach | p. 290 |
7.4.5 Conclusion | p. 291 |
References | p. 291 |
8 Market Analysis | p. 293 |
8.1 Introduction | p. 293 |
8.2 Historical Trends in Mobile Communications | p. 295 |
8.3 Prospective Satellite Markets | p. 297 |
8.3.1 Objectives | p. 297 |
8.3.2 The Role of Satellites | p. 297 |
8.3.3 Satellite Markets | p. 298 |
8.3.4 Service Categories | p. 299 |
8.4 Future Market Forecast | p. 301 |
8.4.1 Terminal Classes | p. 301 |
8.4.2 Market Segmentation | p. 302 |
8.4.3 Sizing the Market | p. 305 |
8.4.4 Data Sources | p. 308 |
8.5 Results | p. 309 |
8.5.1 Tariff | p. 309 |
8.5.2 Portable Market | p. 310 |
8.5.3 Mobile Market | p. 311 |
8.5.4 Total Market | p. 315 |
8.6 Concluding Remarks | p. 316 |
References | p. 318 |
9 Future Developments | p. 319 |
9.1 Introduction | p. 319 |
9.2 Super GEOs | p. 320 |
9.3 Non-Geostationary Satellites | p. 323 |
9.4 Hybrid Constellations | p. 324 |
9.5 Mobile-Broadband Satellite Services | p. 325 |
9.6 Mobile IP | p. 328 |
9.7 Transmission Control Protocol (TCP) | p. 330 |
9.7.1 Overview | p. 330 |
9.7.2 Congestion Window and Slow Start Threshold | p. 331 |
9.7.3 Loss Recovery Mechanisms | p. 331 |
9.7.4 Future Work | p. 332 |
9.8 Fixed-Mobile Convergence | p. 333 |
9.9 High Altitude Platforms | p. 334 |
9.10 Location Based Service Delivery | p. 337 |
9.11 Concluding Remarks | p. 338 |
References | p. 339 |
Appendix A Acronyms | p. 341 |
Appendix B Symbols | p. 351 |
Index | p. 359 |