基于信道状态的WiMAX系统实时调度算法  

Channel-based real-time scheduling algorithm for WiMAX system

作　　者：冯慧芳[1] 赵亮[1] 陈媛媛[1] 

机构地区：[1]西北师范大学数学与信息科学学院,兰州730070

出　　处：《计算机应用研究》2013年第1期224-226,共3页Application Research of Computers

基　　金：国家自然科学基金资助项目(61072063);甘肃省科技计划资助项目(1107RJZA234);西北师范大学青年教师科研能力提升计划资助项目(NWNU-LKQN-11-4)

摘　　要：介绍了M-LWDF、EXP和CD-EDD三种经典的实时调度算法,并在此基础上提出一种基于信道状态的WiMAX系统的实时调度算法CBRTS(channel-based real-time scheduling)。该算法核心思想是在数据链路层中考察物理层信道的传输条件,从而进一步将有限的无线资源更加合理地分配给用户。仿真结果表明,提出的算法具有更高的吞吐量、更小的时延和丢包率,能满足实时业务的QoS要求。This paper introduced three classic real-time scheduling algorithm named M-LWDF,EXP and CD-EDD.Then it proposed a real-time scheduling algorithm called CBRTS which based on the channel condition.The main idea of the algorithm was to find a more reasonable distribution of limited wireless resources for the users by analyzing the transmission conditions of the physical layer.The simulation results show that the CBRTS algorithm can reach higher throughput,smaller delay and packet loss rate,and are able to meet the QoS requirements of real-time businesses.

关 键 词：WIMAX 实时调度 服务质量 信道状态 

分 类 号：TP393.01[自动化与计算机技术—计算机应用技术] TP301.6[自动化与计算机技术—计算机科学与技术]