高效节能的无线传感器网络路由协议研究

现有的分簇式无线传感器网络路由协议中,簇大小通常是固定的.簇首间采用多跳通信的方式将数据传送至基站的过程中,靠近基站的簇首由于需要转发大量来自其它簇首的数据而负担过重,可能造成节点过早死亡.为了解决这种情况,提出一种非均匀分簇的多跳路由协议,根据与基站的距离建立大小不同的簇,靠近基站的簇规模小于远离基站的簇,靠近基站的簇首可以为数据转发预留能量.同时,在簇首选择机制上基于LEAcH做了一定的改进,通过综合考虑簇内平均能量、节点剩余能量等参数,有效避免了低能量节点被选为簇首.仿真实验结果表明,路由协议能有效地平衡簇首的能量消耗,延长网络的生存时间.

An Energy-efficient Routing Algorithm for Wireless Sensor Networks

In current cluster-based wireless sensor network routing protocol, the range of cluster always is the same. While cluster head transports data to BS using multi-hop, the cluster heads near BS need forward huge mount of data from other cluster heads, it may make node die early. To solve the problem, this paper presents an uneven cluster-based multi-hop protocol, it organizes different cluster in different size based on the distance between cluster heads and BS, and clusters closer to sink have smaller sizes ...