一种具有QoS保证的无线分组调度算法  

A Novel Wireless Packets Scheduling Algorithm with QoS Guarantee

作　　者：赵树有[1] 

机构地区：[1]中国石化集团管道储运公司南京输油管理处,江苏南京210046

出　　处：《山西电子技术》2008年第5期56-57,共2页Shanxi Electronic Technology

摘　　要：为提高系统吞吐量对指数规则(EXP-rule)调度算法进行了改进。改进的指数规则(WEXP-rule)算法根据各移动用户收发信道质量和业务传输的QoS要求动态调整各用户的业务传输优先级,确定下行共享信道的调度方案。并给出该算法的简化形式SWEXP-rule。仿真结果表明,与传统调度算法相比,SWEXP-rule算法在数据包传输时延受限的条件下具有无线信道利用率高、实现复杂度低等特点。The EXP-rule scheduling algorithm is proposed for system throughput enhancement.The WEXP-rule algorithm makes packet scheduling scheme in downlink shared channel based on the users＇ priorities,which are dynamically adjusted according to the quality of wireless channel and the QoS requirement of streaming services.Simplified SWEXP-rule is also derived.Simulation results show that the new scheduling algorithm has the benefits of lower complexity,higher wireless channel utilization efficiency under the constraint of transfer delay,compared to the traditional scheduling algorithms.

关 键 词：B3G移动通信系统 下行共享信道 流媒体 WEXP-rule算法 SWEXP-rule算法 

分 类 号：TN929.5[电子电信—通信与信息系统]