基于802.15.4的无线传感器网络查询质量优化算法  

A Query Quality Optimization Algorithm in IEEE 802.15.4-Based Wireless Sensor Networks

作　　者：毛剑琳[1] 吴智铭[1] 

机构地区：[1]上海交通大学自动化系,上海200030

出　　处：《计算机工程与应用》2006年第20期4-6,43,共4页Computer Engineering and Applications

基　　金：国家自然科学基金资助项目(编号:60074011;60574049)

摘　　要：在簇形结构的无线传感器网络中,针对基本单元簇,在IEEE802.15.4协议的MAC层讨论查询质量的优化问题。建立了以查询质量为目标,带宽限制为约束条件的优化模型,并提出了动态规划法和查询质量因子动态更新算法相结合的动态查询质量保证算法。仿真实验表明,该方法能提高IEEE802.15.4的实时带宽利用率,减少查询响应时间,并能根据不同的查询质量要求提供相应的服务。From the point of view of MAC layer definition in IEEE802.15.4,a query quality optimization problem in a cluster-based wireless sensor network is discussed.An optimization model is presented,whose objective is to maximize the quality of query, subject to the bandwidth limitations.Combining the dynamic program method and dynamic quality of query factor updating algorithm,a Dynamic Query Quality Guaranteed（DQQG） algorithm is proposed.The simulation results show that I）QQG algorithm can improve the real-time bandwidth utility and decrease the query response time. Additionally it can provide corresponding query services according to the different service demands.

关 键 词：无线传感器网络 IEEE 802.15.4 查询 优化 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]