节能有效的无线传感器网络状态信息收集算法  

Energy-efficient algorithm for network status information collecting in wireless sensor networks

作　　者：刘琳[1,2] 于海斌[1] 曾鹏[1] 

机构地区：[1]中国科学院沈阳自动化所,辽宁沈阳110016 [2]中国科学院研究生院,北京100039

出　　处：《通信学报》2009年第6期126-134,141,共10页Journal on Communications

基　　金：国家自然科学基金资助项目(60434030);国家杰出青年科学基金资助项目(60725312)~~

摘　　要：网络状态信息收集协议既要保证信息收集的准确性、实时性,又要保证协议算法的轻量级特性。为解决上述矛盾问题,提出了一种轻量级的、能量有效的、基于无损聚合的层次分簇数据收集机制(QTBDC)。QTBDC首先对网络节点编码并在节点间建立起一个逻辑层次簇结构,然后利用各个子簇状态数据的相似性和编码的连续性,实现了网内无损聚合。该监测机制使得网络状态信息的收集在不丢失数据细节信息的情况下,数据通信量大大减少。经过仿真分析表明,该方法与现有经典数据收集方法相比,实现了节能,延长了网络的生命期。The protocol of network status information collection guaranteed not only authenticity of the collected information but also lightweight of the collection algorithm. To solve the contradiction problem, a lightweight, energy efficient, in-network lossless aggregation and hierarchical cluster was proposed based on data collecting mechanism （QTBDC）. In QTBDC, all the nodes in WSN were encoded and a logical multi-level cluster was constructed among the nodes. Making use of the similarity of network status data and continuity of node codes in sub-cluster, in-network lossless aggregation could be realized. Without losing details of network status data, this monitoring mechanism reduced communication cost significantly. Simulations show that, compared with the classical data collecting methods, the QTBDC makes WSN save more energy and therefore WSN sustains longer life cycle.

关 键 词：无线传感器网络 信息收集 无损聚合 区域四叉树 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]