无线局域网中周期查询控制系统分析  

Analysis of Polling Systems Based on Wireless LANs

作　　者：杨志军[1] 赵东风[1] 孙权[1] 

机构地区：[1]云南大学通信工程系,昆明650091

出　　处：《云南民族学院学报（自然科学版）》2002年第3期139-143,共5页Journal of Yunnan University of The Nationalities(Natural Sciences Edition)

基　　金：国家自然科学基金资助项目 (6 986 2 0 0 1)

摘　　要：通过对无线局域网 80 2 .11协议中满足时限业务需要的周期查询控制方式进行分析 ,对周期查询系统的调度策略做了改进 ,将传输服务与转移查询做了并行处理 ,基于连续时间型系统分析了平均排队队长和平均等待时间 ,并结合无线局域网上多业务应用 。This paper analyzes the polling systems defined in the 802.11 to transmit delay sensitive data and proposes a policy of parallel schedule for a polling system with limited service (K=1) in continuous time. The system enables simultaneous polling and transmissions of information packets. By the imbedded Markov chain theory and the generation function method, the mean values of queue length and information packed waiting time are explicitly obtained based on the different traffic in WLAN. Mathematical analysis and simulation results show that the parallel schedules are more efficient.

关 键 词：无线局域网 周期查询 控制系统 并行调度策略 

分 类 号：TP393.1[自动化与计算机技术—计算机应用技术]