无线传感器网络满足QoS带宽需求的能量最优路由方案  

Best Energy Route Discovery Method with the Requirement of QoS Bandwidth Satisfied for Wireless Sensor Networks

作　　者：王毅[1] 张德运[1] 张栋[1] 

机构地区：[1]西安交通大学电子与信息工程学院网络所,西安710049

出　　处：《传感技术学报》2006年第6期2754-2759,共6页Chinese Journal of Sensors and Actuators

基　　金：国家863高技术研究发展计划资助项目(2003AA148010)

摘　　要：有效使用片上受限资源以保持最长的生命周期是无线传感器网络的核心问题.QoS路由技术解决了无线传感器网络要求支持多种业务的差别服务和全网范围的资源有效利用的问题.本文提出了一种可以满足QoS带宽需求的能量最优路由发现方法.该方法构建了节点选择模型、能量评价模型和节点能耗权重模型,使用遗传算法利用可用节点集合建立满足QoS带宽需求的能量最优路由.利用Markov链证明该算法是可收敛并且是以指数速度概率强收敛的.另外,通过实验仿真与分析,给出了本文遗传算法的控制参数的选择区间,实验显示本文提出的满足QoS带宽需求的路由发现方法对无线传感器网络具有更好的适应性和更长的网络寿命.The key objective of wireless sensor networks （WSNs） is to use the constrained embedded resource efficiently and to maximize their lifetime. Quality of service （QoS） routing is one of the key technologies to provide differential services and utilize the whole resource effectively for WSNs. We present a new best energy route discovery method which could meet the requirements of QoS bandwidth and has better network lifetime. The method is based on the node selection model, energy estimate model and node energy consumption weight model. The genetic algorithm （GA） which utilizes the set of the available nodes was used to construct the route. The Markov chain proved the algorithm that is strong convergence and also the convergence speed is exponent. In addition, the choosing intervals of the controlling parameters proposed by the GA algorithm have been determined based on the simulations and the analysis results. It has been shown from the experiments that the energy best route discovery method has better adaptability and longer lifetime.

关 键 词：无线传感器网络 QOS 遗传算法 节能策略 网络寿命 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]