项目名称: 移动多跳WIMAX网络中高效调度机制的研究
项目编号: No.61202461
项目类型: 青年科学基金项目
立项/批准年度: 2013
项目学科: 计算机科学学科
项目作者: 王汉武
作者单位: 湖南大学
项目金额: 24万元
中文摘要: 本项目旨在从不同层次来研究移动多跳WIMAX网络中的高效调度机制,从而实现整个网络系统资源的优化利用。根据移动多跳WIMAX网络的业务传输特点,研究构建一种运行于各RS站点的分布式流量调度机制,同时引入控制理论方法设计合适的离散速率控制器来实现网络上各类业务流的稳定传输与各跳链路传输带宽的充分利用。根据移动多跳WIMAX网络的结构特征以及链路之间的传输调度关系,研究设计一种基于并行链路集划分模式的空间复用机制,并且构造相关的资源优化调度方案来提升各链路的可用传输带宽以及实现系统带宽资源的最大空间复用。针对移动多跳WIMAX网络的物理层时变特性,研究设计一种能反应信道实时状态变化以及符合自适应调制编码原则的信道传输适配机制,来实现各物理信道的实时传输速率以及系统传输承载容量的优化。项目将通过实验与仿真相结合的办法来对各类方案的实现机制与操作算法进行测试与检验。
中文关键词: 移动多跳WIMAX;调度器;空间复用;传输适配;优化
英文摘要: This project aims to research the effective scheduling schemes in different layers of the so called mobile multihop WiMAX networks,so as to optimize the network system resource efficiency. Firstly a distributed traffic scheduling scheme running on each hop of relay stations is proposed to deal with the end to end traffic transmission over the whole network, and a suitable rate controller is designed using the control theory which helps to stabilize the network traffics and fully utilize the transmission bandwidth. Second a spatial reuse scheme based on the network structure and the cocurrent active link set partition is proposed to enhance the link layer scheduling efficiency, and an optimal resource allocation scheme is given to achieve the maximal system spatial reuse. Finally a channel transmission adaptation scheme with respect to both the instant channel state and adaptive modulaiton and coding principle is proposed to optimize the physical channel transmission rate and the network system capacity. This project will carry out experiments and simulations to test the various scheduling schemes proposed and their operation algorithms and verify their efficacy and efficiency.
英文关键词: mobile multihop wimax;scheduler;spatial reuse;transmission adaptation;optimization