WiMAX Handbook: Building 802.16 Wireless Networks
Describing how WiMAX affects current telecom technologies including Wi-Fi, fiber optics, and VoIP, this book discusses the business and economic implications of this ground-breaking technology.
TABLE OF CONTENTS WiMAX Handbook: Building 802.16 Wireless Networks
Appendix A: Considerations in Building Wireless Networks
This appendix is not intended as a "how to" guide but rather to give the reader a broad overview of the foibles and tricks of the trade for the installation of wireless networks.
Successful deployment of a WiMAX system requires design, planning, implementation, operation, and maintenance. This chapter provides a very brief overview of what the wireless network planner needs to consider when deploying a WiMAX network.
Design
Some of the questions that must be addressed in selecting a WiMAX solution lead to trade-offs such as speed versus range. Others have mutually exclusive answers such as proprietary versus standards-based extensions. Some of the questions that need to be addressed include: What is the network topology? What kinds of links will be used? What is the environment like? What is the throughput, range, and bit error rate (BER) that is needed? Will one need tolerance for multipath? What frequency band will be used with what protocols? Can the solution be off-the-shelf or surplus standards based, or will it need to be custom?
Network Topology
One of the major factors that determine throughput, robustness, reliability, security, and cost is the geometric arrangement of the network components, or the topology. Five major topologies are in use today in wired networks: Bus, Star, Tree, Ring, and Mesh. In Wireless LAN only, the Star and Mesh have analogues with the wired networks.
The mesh topology is a slightly different type of network architecture than the better-known star topology, except that there is no centralized BS. Nodes that...
Copyright The McGraw-Hill Companies, Inc. 2005 under license agreement with Books24x7
