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面向最小延迟的无线mesh网络时隙分配问题研究
引用本文:赵金东,王沁,万亚东,刘其成.面向最小延迟的无线mesh网络时隙分配问题研究[J].小型微型计算机系统,2012,33(5):1041-1046.
作者姓名:赵金东  王沁  万亚东  刘其成
作者单位:1. 北京科技大学信息工程学院,北京100086;烟台大学计算机学院,山东烟台264005
2. 北京科技大学信息工程学院,北京,100086
3. 烟台大学计算机学院,山东烟台,264005
基金项目:国家自然科学基金青年基金,山东省高等学校科技计划项目
摘    要:在基于IEEE802.15.4的工业无线传感器网络中,通过时分复用技术来实现节点间并行通信,以提高网络的吞吐量.通常,网络中的管理器根据全网拓扑对网络中的每个连接分配一个超帧中相应的时隙.不同的时隙分配方案中,连接在超帧中活动的顺序也不同,对网络性能的影响也不同.本文研究了不同时隙分配方案在网络吞吐量和数据延迟方面对网络的影响,定性分析了时隙分配方案与数据延迟的关系,并根据mesh结构的特点提出一种使用粒子群优化的算法,用于在网络管理器上对时隙分配进行优化,使得数据延迟最小化,以满足工业无线网络实时性应用的要求.

关 键 词:工业无线网络  时隙分配  粒子群优化  无线传感器网络  延迟

Study of Timeslot Assignment in Mesh Wireless Sensor Network for Minimum Delay
ZHAO Jin-dong , WANG Qin , WAN Ya-dong , LIU Qi-cheng.Study of Timeslot Assignment in Mesh Wireless Sensor Network for Minimum Delay[J].Mini-micro Systems,2012,33(5):1041-1046.
Authors:ZHAO Jin-dong  WANG Qin  WAN Ya-dong  LIU Qi-cheng
Institution:1(School of Information Engineering,University of Science and Technology Beijing,Beijing 100086,China) 2(School of Computer,Yantai University,Yantai 264005,China)
Abstract:In IEEE802.15.4 based industrial wireless sensor network,Time Division Multiple Access(TDMA) mechanism is adopted to enable parallel communication of the nodes so as to improve the network throughput.Generally,the network manager assigns a time slot in superframe for every link according to the network topology.Different assignments generate different active sequences for the links,so that result in different impacts on network performance.In this paper,the impact on network performance of time slot assignments was studied,including network throughput and data delay,and the relation between data delay and time slot assignment was analyzed qualitatively.A PSO algorithm aimed at optimizing the time slot assignment for minimum data delay was introduced,which was run on network manager,so as to satisfy the real-time requirement in industrial wireless network application.
Keywords:industrial wireless network  time slot assignment  PSO  wireless sensor network  data delay
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