摘要
在无线传感器网络（WSN）中，由于信息和数据产生和转发的负载不均，会造成能量洞问题。利用时间同步网格协议统一管理网络且其内部无冲突可以进一步研究能量洞问题，使用数学分析如何避免此问题。了解其成因后提出一个能更新网络路由图并令节点调整其传输距离以便调整自身能量消耗的新方法。当节点只有较少能量时便可以减少转发或减小其传输距离以延长寿命。最后使用NS2工具模拟网络，与原TSMP协议对比，仿真结果显示网络拥有了相对更长的寿命。
Because of uneven load of generation and transmitting of massages and data in wireless sensor network（WSN）,there has always been a problem of energy hole.The time synchronized mesh protocol （TSMP） uses time synchronization,graph-routing and pre-scheduling of pair-wise communication while cycling through all available pre-divided channels to manage the whole network.With the collision-free network,we study the energy-hole problem and discuss how to fix or improve this problem with mathematical analyses.When knowing where the reason lies,we propose an algorithm which can enable the nodes to choose their transmission range and next hop relay in order to adjust energy consumption of nodes in different position of the network.With this ability nodes that have less energy can reduce their work,so do the nodes in the region nearer the sink,thus the lifetime of the network can be prolonged.At the end of this paper,we evaluate this algorithm by means of the NS2 stimulation tools,and compare the original TSMP with the new one which contains a new module that can control the transmission range.At last we get the simulation results which tell us that we finally get a network with relatively longer lifetime.
出处
《山东师范大学学报（自然科学版）》
CAS
2014年第3期30-34,共5页
Journal of Shandong Normal University(Natural Science)
基金
山东省星火计划基金资助项目（2013XH17003）.
