Published Online: 14 DEC 2007
Copyright © 2007 by John Wiley & Sons, Inc.
Wiley Encyclopedia of Computer Science and Engineering
How to Cite
Tsao, S.-L. and Lin, Y.-B. 2007. WiMAX Networks. Wiley Encyclopedia of Computer Science and Engineering. .
- Published Online: 14 DEC 2007
IEEE Std 802.16-2004, or Worldwide Interoperability for Microwave Access (WiMAX), is a broadband wireless system that offers packet-switched services for fixed, nomadic, portable, and mobile accesses. The first specification, i.e., IEEE, Std 802.16-2004, that was ratified by the IEEE in 20014 targets on fixed and nomadic accesses in both line-of-sight (LOS) and non-line-of-sight (NLOS) environments. With the IEEE 802.16e amendment, i.e., IEEE Std 802.16e-2005, the IEEE 802.16e system, also called Mobile WiMAX, further provides handover, sleep-mode, idle-mode, and roaming functions to facilitate mobile accesses. Besides the PHY and MAC layer specifications, IEEE working groups and technical forums have also defined management and networking protocols for WiMAX, With these efforts, WiMAX has become a complete solution for broadband wireless access beyond 3G. This article provides an overview to WiMAX from an end-to-end perspective. The architecture and entities of a WiMAX network and the design of fixed/mobile WiMAX PHY and MAC layers are first presented, and then protocols and procedures for the network entry, connection management, mobility management, sleet-mode and idele-mode operations, and security management are introduced.
- WiMAX network;
- mobile WiMAX;
- IEEE Std 802.16;
- wireless networks;
- broadband wireless access;
- orthogonal frequency division multiplexing;
- computer networks