| 本书共分11章，介绍了通信基础知识、AMPS、D-AMPS、GSM、CDMA、WAP协议组、本地多点分布业务(LMDS)、多信道多点分布系统(MMDS)、蓝牙和无线局域网等方面的的内容。全面解释了无线网络的工作原理，介绍了允许通过无线网络传输的最新应用。
本书适合希望了解无线网络数据传输和应用的广大师生和技术人员阅读，对无线网络开发人员更是一本很内行的参考书。 |
| List of Tables and Figures
Preface About the Author About the Reviewers About the Contributors Chapter 1 Welcome to the Revolution 1 * Evolving Wireless Applications 2 ·Personal Positioning 3 ·Vehicle Positioning 4 ·Meter Reading 5 ·Mobile Banking and Finance 5 ·Brick and Mortar Shopping 6 ·Email 7 ·Wireless Docking 7 ·Web Surfing 8 ·LAN Access and Mobility Ports 8 * Book Preview 8 ·Communications Basics 9 ·AMPS 9 ·D-AMPS 9 ·GSM 10 ·CDMA 10 ·The WAP Suite 10 ·LMDS 11 ·MMDS 11 ·Bluetooth 11 ·Wireless LANS 12 Chapter 2 Communications Basics 13 * Powets of 10 14 * Frequency 15* Wavelength 16 * The Frequency Spectrum 17 * Bandwidth 18 * Power Measurements 18 ·Bel 19 ·Decibel 20 ·Decibel above 1 mW 20 * Signal-to-Noise Ratio 21 * Propagation Loss 23 * Transmission Rate Constraints 24 ·Nyquist Relationship 25 ·Shannon's Law 27 * Radiofrequency Spectrum Allocation 28 ·U.S.Spectrum Allocation 28 ·Band Nomenclature 29 ·Applications 31 Chapter 3 AMPS 33 * Evolution 34 * Components 36 ·Component Relationship 36 * Network Access 37 * Frequency Utilization 37 ·Frequency Allocation 38 ·Channel Center Frequencies 41 ·Channel Utilization 41 * Signaling 51 ·Voice-Channel Signaling 52 ·Cochannel Interference 53 * Data over AMPS 54 ·Case Study and Lessons Learned 54 ·Operating Rates 56 ·Cellular-Ready Modem Protocols 56 Chapter 4 D-AMPS 63 * Overview 64 * TDMA 65 ·Advantages 67 ·Disadvantages 67 * Digital Radio 67 * Voice-Coding Methods 68 ·Channel Banks 68 ·PCM 68 ·TDM and Line Driver 70 ·Waveform Coding 70 ·Voice Coding 70 ·Hybrid Coding 71 * Modulation 72 * Baud Rate 72 * TDM Operation 73 ·Frames 73 ·Time-Slot Format 75 ·Digital Channel Traffic Signaling 77 ·Control Channel Operations 78 * The IS-136 Digital Control Channel 78 ·PCS Overview 79 ·Extended Battery Life 80 ·Frequency Utilization 81 ·Logical Channels 81 ·Superframes and Hyperframes 84 * The PCSLayered Model 84 * PCS Messaging 86 * Modem Operations 86 Chapter 5 GSM 87 * Evolution 88 * Frequency Allocation 88 * Governing Body 89 * GSM Services 89 ·Voice Transport 90 ·Data Services 90 ·Bearer Services 91 ·Teleservices 91 ·Supplementary Services 92 ·The Subscriber ldentity Module 93 * Frequency Allocation 94 ·Initial European GSM 94 ·United Kingdom GSM 95 ·PCS 1900 96 * TDMA Operations 97 ·Time -Slot Utilization 98 * Speech Coding 98 * Framing and Channel Organization 99 ·The GSM Multiframe 99 * Data over GSM 103 ·Modem Incompatibility 103 ·Adapter Use 103 * Information Transfer Modes 104 * Inbound Data/Fax 104 * Data Compression 105 * Short Message Service 105 ·Features 106 ·Utilization 108 ·SMS Centers 109 ·Using the Internet 109 Chapter 6 CDMA 113 * Evolution 114 ·CITA Requirements 114 ·Deployments 115 ·IS-95 115 * Overview 115 ·Comparison With AMPS and TDMA 116 ·Capacity 118 ·Frequency Allocation 118 ·Speech Coding 122 * Channel Structure 124 ·Downlink Channels 124 ·Uplink Channels 129 * CDMA Data Services 131 ·The CDMA Air-Interface Protocol Stack 131 ·SMS 137 * 3G-CDMA 138 ·UMTS/IMT-2000 138 ·CDMA2000 139 Chapter 7 The WAP Protocol Suite 143 * Overview 144 ·Evolution 144 ·Basic Components 145 ·Architecture 146 * Wireless Datagram Protocol 152 ·Port Number Use 152 ·The Adaptation Layer 154 ·Protocol Operation 154 * Wireless Transport Layer Security 158 ·Connection Management 159 ·Encryption Support 159 * The Wireless Application Environment 162 ·Components 163 ·The Wireless Markup Language 163 Chapter 8 Local Multipoint Distribution Service 175 * Overview 176 * Frequency Allocation 177 ·Frequency Blocks 177 ·Frequency Bands 178 ·Bandwidth and Capacity 178 * Architecture 180 ·Frequency Considerations 180 ·The LMDS Cell 180 ·Base Station 182 ·The Network Interface Unit 183 ·Access Methods 184 ·Modulation 186 * System Capacity 188 ·FDMA 188 ·TDMA 190 ·Increasing Cell Capacity 190 * LMDS Advantages 191* LMDS Disadvantages 191 Chapter 9 Multichannel Multipoint Distribution System 193 * Overview 194 ·Frequency Band 195 ·Potential Market 195 ·Basic Architecture 195 ·Advantages of Use 196 ·Potential Disadvantages 196 * Evolution 196 ·MDS 197 ·MMDS 197 * Frequency Assignments 199 * Transmission Methods 202 ·Multipath Communications 202 ·Minimizing Multipath Reflections 203 * Summary 207 Chapter 10 Bluetooth 209 * Rationale 210 ·Compatibility Problems 210 ·Bluetooth to the Rescue 211 ·Potential Utilization 211* Evolution 213 ·The Code Name 213 * Overview 214 * Comparison with Infrared(IR) 215 * System Architecture 215 ·Master-Slave Relationship 216 ·Power Requirements 216 ·Power Operating Modes 217 ·Interface Support 218 ·The Protocol Stack 218 ·Adopted Protocols 221 * Communications Channels 221 ·Networking 222 Chapter 11 Wireless LSNs 229 * General Characteristics 230 ·Spread Spectrum Technology 230 * Applications 238 ·Inventory Control 238 ·Hospital 238 ·Hotel 239 ·Training 239 ·Trade Shows 239 ·Wireless Rationale 240 * The IEEE 802.11 Wireless LAN Standard 240 ·Initial Effort 240 ·Basic Configuration 241 * Frequency Selection 241 * Environment 242 * Architecture 242 ·Operation 261 * Wireless Home Networking 265 ·Overview 265 ·System Requirements 265 ·Technical Characteristics 266 ·Appendix A 271 ·Appendix B 291 ·Appendix C 309 ·Glossary 321 Index 331 |
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