3.1.4 Traffic Equations in the WLAN 450
19.3.1.5 Performance Measures 451
19.3.2 Cellular/WLAN Model using Multidimensional Markov Chains 452
19.3.2.1 Model Assumptions 452
19.3.2.2 Performance Measures 453
19.4 Further Analytical Models for Cellular/WLAN Interworking 454
19.4.1 WLAN Capacity 454
19.4.2 Other Mobility Models 456
19.4.2.1 Non-uniform Mobility within a Single Cell 456
19.4.2.2 A Cell Residence Time Model for Two-Tier Integrated
Wireless Networks 456
19.4.3 Models with General Distributions 458
19.4.3.1 Traffic Equations of Handoff Rates 459
19.4.3.2 Channel Holding Times 461
19.5 Simulation Models 462
19.6 Open Issues 463
19.7 Conclusions 464
19.8 References 465
Part VII: Coexistence
Chapter 20 - Coexistence of Unlicensed Wireless Networks 469
20.1 Introduction 469
20.2 Overview of Unlicensed Frequency Bands 469
20.2.1 ISM and U-NII Frequency Bands 470
20.2.2 The 3650 MHz Frequency Band 472
20.2.3 VHF and UHF Television Frequency Bands 473
20.3 Survey of Unlicensed Wireless Networks 474
20.3.1 Wireless Local Area Network (WLAN) 474
20.3.2 Wireless Personal Area Network (WPAN) 476
20.3.3 Wireless Metropolitan Area Network (WMAN) 477
Contents xvii
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