By providing affordable wireless broadband access, WiMAX technology will revolutionize broadband communications in the developed world and bridge the digital divide in developing countries. This book discusses standard versus proprietary solutions for wireless broadband access, reviews the core of media access control protocol of WiMAX systems, and presents the operator perspective 'on the wireless service. It also discusses the main mobility functions of the IEEE 802.16e standard, describes how to speed up WiMAX handover procedures, presents the 802.16 mesh protocol, and surveys the testing and certification processes used for WiMAX products.