WIMAX网络中信道时变特性明确及信道传输优化方案的研究

项目名称： WIMAX网络中信道时变特性明确及信道传输优化方案的研究

项目编号： No.61472129

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 自动化技术、计算机技术

项目作者： 王汉武

作者单位： 湖南大学

项目金额： 80万元

中文摘要： 本项目旨研究WIMAX网络中的信道时变特性与规律，并从不同层次来研究其信道传输优化方案，从而实现整个网络信道资源的优化利用。项目首先考虑各通信信道的状态时变特性，研究构建一种信道状态分析模型来明确各信道的最佳实时状态取值及其分布规律，然后进一步分层次研究如何优化各信道的传输效率。第一，根据各信道的物理层传输特性，研究构造一种基于自适用调制编码原则的传输适配机制来实现各信道物理传输速率及承载容量的优化。第二，根据各信道的链路层传输特性，研究设计一种基于并行链路集划分模式的信道空间复用机制，并构造相关的复用调配方案来实现系统可用传输带宽的升级及信道资源的最大空间复用。第三，根据网络层中各类业务的传输特点，研究构建一种运行于各RS站点的分布式流量传输机制以及服务质量实现机制，来实现信道上各业务流端到端的稳定传输，服务质量保证与信道带宽资源的充分利用，并对信道的传输服务能力与各项性能指标做出评估。

中文关键词： 网络资源管理；传输优化；服务质量

英文摘要： This project aims to research the channel time-varing characterization in WiMAX networks, and further research channel transmission optimization from different layers, so as to optimize the network channel resource efficiency. Firstly given the time-varing channel state , we propose a channel analytical model to specify the best channel state and its statistical distribution.Then we optimize the channel transport efficiency as follows. First, an adaptive modulation and coding principle based channel transmission adaptation scheme is proposed to optimize the channel physical transmission rate and its physical capacity. Second, a spatial reuse scheme based on the cocurrent active link set partition is proposed to enhance the link layer utility efficiency, and an optimal resource schedule scheme is also given to achieve the maximal channel transport spatial reuse. Finally a distributed traffic control scheme running on each hop of relay stations and also a quality of service implementation scheme are proposed to to achieve the stable end to end traffic transmission, service performance guarantee, and high channel utilization as well. We also carry out the performance analysis on various metrics to evaluate the channel transmission efficiency over the whole network.

英文关键词： Network Resource Management;Transport Optimization;Quality of Service