集中式无线局域网流间干扰分析及资源分配机制  

Traffic Interference Analysis and Resource Allocation Scheme for Wireless Local Area Networks with Infrastructure Mode

作　　者：皇甫伟[1] 周新运[1] 孙利民[1] 

机构地区：[1]中国科学院软件研究所信息安全国家重点实验室,北京100080

出　　处：《计算机辅助设计与图形学学报》2007年第11期1489-1495,共7页Journal of Computer-Aided Design & Computer Graphics

基　　金：国家自然科学基金(60472076;60673178;60434030);国家"九七三"重点基础研究发展规划项目(2006CB303007);国家"八六三"高技术研究发展计划(2006AA01Z218;2006AA01Z215)

摘　　要：分析无线信道变化对集中式无线局域网下行业务性能的影响,指出流间干扰会导致所有下行业务流性能下降.提出一种基于信道状态的资源分配机制,该机制基于信道状态动态地调整业务流分组的传输次数,根据业务流的QoS需求,采用优先级调度算法调度分组.实验结果表明,该机制可以合理地分配资源,减小流间干扰带来的性能下降.In this paper, the influence of wireless channel state transformation in wireless local area networks with infrastructure mode is studied. It is shown that the interference among different traffics will lead to severe performance degradation of all downlink traffics. A novel channel state aware resource allocation scheme is proposed, which adaptively adjusts transmission limit for different traffics based on the state of wireless channel and schedules packets using a priority algorithm according to the QoS requirements of the traffics. Experimental results show this scheme can allocate resource more efficiently and reduce the performance degradation caused by the interference of downlink traffics.

关 键 词：流间干扰分析 分组错误率 下行业务性能 资源分配机制 

分 类 号：TP393.1[自动化与计算机技术—计算机应用技术]