Based On The 802.16e Protocol Mac Module Research And Design

IEEE 802.16 standard called Air Interface for WirelessMAN standard is supported by WIMAX forum. It applies to the range of WMAN (Wireless Metropolitan Area Network) mainly. This thesis has studied 802.16e standard, to design a high-efficient software platform that has a high adaptive capacity and high performance.IEEE 802.16 is the new developing wireless technology of broadband born after 3G, and has framework with bandwidth up to 75M and the whole IP. It can be simple and high-efficient to access to Internet, and there is very powerful competitiveness in the wireless network transmission technology of the next generation. Wireless network have the problem of high error rate, badly channel dependability and transmit environment change unfavorable soon, etc. How to solve these problems fast and effectively? It is the key to guaranteeing transmitting quality. In 802.16 serial protocols, MAC (Medium Access Control) play a decisive role as an only software platform combined closely with transmission technology of physics, to guarantee the wireless network to transmit the stability and efficiency.On the basis of abundant researching 802.16e protocol, The main innovation of the thesis is as follows:1. Provide solution of entry network. The difficult point of entry has been analyzed. Combine the real hardware environment and design the effective implementation method. In case of using few memory, it can support up to 512 users to network and run steadily;2. Has studied the high-performance algorithm of handover. The algorithm of handover reaches WiMAX designing requirement, and supports user move fast. It resolves the problem that user lost signal in tradition algorithm.3. MAC control platform have a lot Advantages such as good adaptive capacity, high performance, run steadily and so on. It has already been applied to prototype system of ICT broadband mobile communication base station and terminal now.