ABSTRACT
The requirements for the Institute of Electrical and Electronics Engineers (IEEE) 802.16m standard were selected to ensure competitiveness with the emerging fourth-generation radio access technologies, while extending and significantly improving the functionality and efficiency of the legacy system. This chapter describes the prominent functional features of IEEE 802.16m radio access technology including air-interface protocols, and physical layer and medium access control functional components. The International Mobile Telephone-Advanced requirements defined and approved by International Telecommunications Union-Radio (ITU-R) and published as Report ITU-R M.2134, referred to as target requirements in the IEEE 802.16m system requirement document, were evaluated based on the methodology and guidelines specified by Report ITU-R M.2135-1. The mobile station state diagram for the IEEE 802.16m is similar to that of the legacy system with the exception of the initialization state that has been simplified to reduce the scan latency and to enable fast cell selection or reselection.
