Wireless Lan Standards and Applications (Artech House Telecommunications Library)

Contents......Page 8
Acknowledgments......Page 12
1.1 Introduction to wireless local area networks ( LANs)......Page 14
1.2 The need for standardization......Page 15
1.3 Future trends......Page 16
References......Page 20
Selected Bibliography......Page 21
2.1 Introduction to the IrDAÛ General description......Page 22
3.2 Medium access control ( MAC) for the IEEE......Page 24
2.2.1 General description of the physical layer specification......Page 26
2.2.2 Specifications for signals at bit rates from 2.4 Kbps to 115.2 Kbps......Page 27
2.2.3 Specifications for signals at bit rates of 0.576 Mbps and 1.152 Mbps......Page 28
2.2.4 Specifications for signals at bit rates of 4 Mbps......Page 30
2.2.5 Optical interface characteristics......Page 34
2.3 Serial infrared link access protocol ( IrLAP)......Page 35
2.3.2 Services provided by IrLAP: Connection- oriented services......Page 37
2.3.3 Configurations and operating characteristics......Page 38
2.3.5 IrLAP frame types......Page 39
2.4.1 Link management multiplexor ( LM- MUX)......Page 41
2.4.2 Information access service ( IAS)......Page 46
2.5 IRDA transport protocol: TinyTP......Page 48
2.5.2 Flow control......Page 49
2.6.1 IrLAN general description......Page 51
2.6.2 Access methods......Page 52
2.6.3 Frames size and format......Page 54
References......Page 56
3.1 Introduction to IEEE 802.11: General description......Page 58
wireless LANs ( WLANs)......Page 60
3.2.1 Expected features of a WLAN MAC protocol......Page 61
3.2.2 The structure of the IEEE standard MAC protocol......Page 67
3.2.3 Comparison with the MAC protocol of other WLANs: HIPERLAN......Page 78
3.3.1 Introduction......Page 82
3.3.2 Spread spectrum techniques......Page 84
3.3.3 Frequency hopping techniques......Page 85
3.3.4 Direct sequence systems......Page 88
3.3.5 IEEE 802.11 frequency hopping physical layer......Page 96
3.3.6 IEEE 802.11 direct sequence physical layer......Page 102
3.3.7 Comparison of the FHSS and DSSS physical layers......Page 106
3.4.1 Description......Page 109
3.4.2 The physical layer convergence procedure ( IR- PLCP)......Page 110
3.4.3 The IR physical medium sublayer ( IR- PMD)......Page 112
3.5 Conclusions and applications......Page 117
References......Page 118
4.1 Introduction: Terminology......Page 122
4.2.1 Introduction......Page 126
4.2.2 Transmission characteristics......Page 127
4.2.3 Data bursts......Page 129
4.2.5 Receiver characteristics......Page 131
4.2.7 Establishing a defer threshold......Page 132
4.3.1 Generalities......Page 134
4.3.2 HIPERLAN CAC protocol data units ( HCPDUs)......Page 135
4.3.3 Channel access......Page 137
4.3.4 Channel access in the free channel condition......Page 139
4.3.5 Channel access in the synchronized channel condition......Page 140
4.3.6 Hidden node detection and operation......Page 143
4.4.1 HIPERLAN MAC functions......Page 144
4.4.2 HIPERLAN differentiation and addressing......Page 145
4.4.4 Power- saving function......Page 146
4.4.5 MAC information databases......Page 148
4.4.6 Priorities and traffic lifetime......Page 150
4.4.8 Look- up function: LR- HMPDU and LC- HMPDU......Page 152
4.4.10 DT- HMPDU......Page 153
4.4.11 TC- HMPDU and HO- HMPDU......Page 154
4.4.12 Routing functions and information maintenance......Page 155
4.5 Conclusions on HIPERLAN type 1......Page 159
4.6 Future BRAN standards......Page 160
References......Page 161
Selected Bibliography......Page 162
5.1 Introduction......Page 164
5.2.1 Public buildings......Page 165
5.2.2 Business environment......Page 171
5.2.3 Domestic buildings ( the home)......Page 172
5.2.4 Industrial sector......Page 173
5.3.1 The RF market......Page 174
5.3.2 The IR market......Page 181
5.4 Conclusions......Page 189
Selected Bibliography......Page 190
Appendix 5A: IrDA membership......Page 191
6.1 Introduction: Is the future wireless?......Page 196
6.2 The evolution of HIPERLAN......Page 199
6.3 The evolution of IEEE 802.11......Page 201
6.4.1 IrDA new techniques......Page 203
6.4.2 Interconnection for wireless networks......Page 208
6.4.3 New techniques for diffuse links: Spread spectrum......Page 210
6.5.1 Introduction......Page 213
6.5.2 Digital enhanced cordless telecommunications ( DECT)......Page 214
6.5.3 Bluetooth......Page 216
6.5.4 Wireless ATM......Page 219
6.5.5 HomeRF......Page 220
References......Page 222
Glossary......Page 226
About the Author......Page 236
Index......Page 238