OFDMA系统中基于多业务QoS保证的机会调度算法  

Opportunistic Scheduling Algorithm Based on Multi-service QoS Guarantee for OFDMA System

作　　者：张冬梅[1] 马文峰[1] 益晓新[1] 徐友云[1] 

机构地区：[1]解放军理工大学通信工程学院,南京210007

出　　处：《数据采集与处理》2014年第3期403-408,共6页Journal of Data Acquisition and Processing

基　　金：江苏省"九七三"计划"下一代网络"(BK2011002)资助项目;国家重点基础研究发展计划("九七三"计划)(2009CB3020402)资助项目

摘　　要：针对正交频分多址接入(Orthogonal frequency division multiple access,OFDMA)系统中多业务资源调度问题,提出了一种基于服务质量(Quality of service,QoS)的最小性能保证的资源机会调度算法。以系统总吞吐量优化为目标,根据业务的QoS参量设计子载波调度参数,并利用图论中最大加权双向匹配问题的求解算法,在各业务间公平分配子载波资源,保证了各业务的QoS要求。仿真结果表明,所提算法在保证各业务的最低速率要求的前提下有效地提高了系统总吞吐量性能。For the issue of resource opportunistic scheduling in orthogonal frequency division multiple access （OFDMA） systems,a resource scheduling algorithm of minimum performance guarantee （MPG） based on quality of service （QoS） constraints is proposed. To maximize the total throughput of the system, the parameters of subcarriers scheduling are designed according to the QoS constraints of services, and by using the method solving the maximal weighted bipartite matching problem in graph theory, the fair subcarriers allocation among the services is realized, thus guaranteeing the QoS. The simulation results show that the proposed algorithm can availably increase the total throughput of the system under guaranteeing the minimum rate constraints of every service.

关 键 词：资源调度 正交频分多址接入 QOS保证 机会调度 

分 类 号：TN929.5[电子电信—通信与信息系统]