分析和研製以Linux作業系統為基礎之IEEE 802.16 WiMAX系統架構和軟體模擬實體層

Abstract

During the system providers of mobile communication investing much money to deploy 3G mobile communication networks, computer industry proposes another wireless communication technology: WiMAX (Worldwide Interoperability for Microwave Access) technique, which is also called as IEEE 802.16 communication technology. It is a strong wireless communication technology to provide users being able to quickly and arbitrarily use wireless data communication services, and this technique also has the potential to be a last mile solution of broadband home network connecting to Internet in future. In the example of 802.16a using instead of DSL technique, the theoretical value of transmission range is about 50km and the transmission rate can be up to 75Mbps. In the example of 802.16e using for mobile equipments, the theoretical value of transmission range is about 2-5km and the transmission rate can be up to 15Mbps. Owing to the cost of wireless network infrastructure is lower than that of wire network infrastructure, WiMAX can be regarded as a cheap substitutive scheme of DSL and other broadband wire networks. On the other hand, although the data transmission rate of 3G mobile communication network is faster than the currently mobile telecom network, it is still slower 30 times than that of WiMAX network, and its radio range is also smaller 10 times than that of WiMAX. Therefore, the required number of base station of WiMAX network is fewer than that of 3G mobile communication network, moreover, some parts of frequency bands defined in WiMAX are license-exempt. Present there are 67 member companies of WiMAX Forum in the world using the name of WiMAX to push the standard. The semiconductor giant-Intel corp. fully supports the technique, and the mobile phone and network provider-Nokia corp. also supports this technique standard. Intel corp. begins to include WiMAX technique in its chip platform, and plans to sell the WiMAX chip in the next half year. The analysts of MIC predict that there will be 25% notebooks installed this sort of wireless technique till 2008. Nemcek believes that consumers will get the convenience brought from WiMAX in 3 or 4 years, and the market of WiMAX will grow in 2007 or 2008. In this thesis” Analysis and Implementation of IEEE 802.16 WiMAX System Software Architecture on Linux Operating System” is to analyze and implement WiMAX wireless system on Linux operating system. For system analyzing, study the standard speciation of IEEE 802.16 series at first, then start to design software architecture for Linux system. For system implementation, use standard PC for software implementation, and then for others to follow the system architecture to implement Linux Device Driver for WiMAX. The system architecture will also consider the efficiency of porting and development of the embedded system. Also implement Software Emulate Physical Layer to verity the Linux Device Driver for WiMAX.