International Journal Of Current Research
Worldwide Interoperability for Microwave Access (WiMAX) specified by IEEE 802.12 supports Wireless Metropolitan Area Network (WMAN). It is one of the most prominent technologies for the next generation networks and it provides high data rates and long range with full support of mobility. It is based on IEEE 802.16 standards and the modifications specifying the MAC and physical layers for fixed, portable, nomadic and mobile access. The aim of the WiMAX Forum Network Working Group is to provide controlled transition of the Mobile Station (MS) between Base Stations (BSs) without the loss of data.