Performance analysis of phs used in the wireless access network 在无线接入网中应用的性能分析研究
Wireless access network 无线接入网
Since there is a lack of the researches on performance in scdma wireless access network , so the study of the paper is very necessary 鉴于目前有关scdma无线接入系统性能分析的文献资料并不多,因此本文所做的工作十分有意义。
This paper deals with the mac techniques in wireless access networks with a central access point ( cap ) , and multicast routing in ad hoc networks 本文对具有中心接入点的无线多址接入技术和adhoc网络中的多播路由技术进行了研究。
Considering the advantage of optic , using the wireless mode , optical wireless access network is a better method to solve the " last mile " problem 结合光传输媒质的特点、采用无线的接入手段,无线光接入网是解决“最后一公里”问题经济合理的较佳方案。
Scdma wireless access network , the newborn wireless communication system , uses many up - to - date techniques , such as smart antennas , to solve the problem Scdma无线接入系统是一种全新的无线接入系统,它采用智能天线等新技术作为解决上述难题的有效手段。
Beyond the development of wireless local area network itself , another trend , i . e . , integration of wide range wireless network and wireless local area network , is flourishing with the goal to construct a global wireless access network 无线局域网除了自身的发展之外,另一个发展趋势是和其它的无线网络互通,从而构建更大的无线接入网络。
To be used flexibly in wireless access networks , and get balance of compression efficiency and robustness , this project implements assistant functions , including the three compression modes and transitions between them , compression states and decompression states , and making use of feedback mechanism to make a communication bridge between compressor and de - compressor . because this project will use on wireless links , packets loss on it will induce the asynchronisms between the context of de - compressor and compressor and lead to errors in decompression 同时,为了rohc在无线接入网中的灵活应用,并且保证较高的压缩效率和较好的健壮性,课题同时实现了rohc所提供的丰富的辅助功能,如完整实现u 、 o 、 r三种模式及模式之间的互换;分别完整实现压缩及解压缩三种状态的转换;合理利用反馈机制,以加强压缩方与解压缩方之间的沟通等。