一种适用于WiMAX系统的调度算法  

A Scheduling Algorithm Designed for WiMAX System

作　　者：邢海涛[1,2] 何加铭[1,2] 

机构地区：[1]宁波大学信息科学与工程学院,浙江宁波315211 [2]宁波大学通信技术研究所,浙江宁波315211

出　　处：《宁波大学学报（理工版）》2010年第1期38-41,共4页Journal of Ningbo University：Natural Science and Engineering Edition

基　　金：科技部国际技术合作与交流专项项目(2008KR1041);国家自然科学基金(60671037);宁波市工业攻关项目(2007B10051)

摘　　要：针对WiMAX系统中混合业务的特点,提出一种新的调度算法来满足QoS要求.新算法采用动量机制分配带宽资源,并为满足实时业务时延要求,采取动量机制设置队列延时分配权值来保证实时业务的调度优先权;同时设置随信道条件动态变化的分配权值,提高WiMAX系统吞吐量.仿真结果表明:算法能够保证实时业务的最大时延要求,并提高系统吞吐量.A new scheduling algorithm is introduced to satisfy heterogeneous service requests with different QoS in the WiMAX system. The new algorithm adopts momentum scheme for bandwidth allocation purposes. The proposed algorithm sets up a waiting time priority to secure a maximum delay required by the real-time services. A channel gain acting upon the dynamic changes of the channels is also set to improve throughput of the WiMAX system. The simulation results suggest that the developed algorithm can ensure real-time service delay request and improve the throughput of the WiMAX system.

关 键 词：WIMAX 调度算法 QOS 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]