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MANET中基于能量约束的机会路由研究李钦伟 陈志刚 曾 锋 漆华妹 李 登


摘 要:为了使能量受限的无线网络寿命更大化,提出了MANET中基于能量约束的机会路由(ECOR)。根据节点的能量消耗模型(NECM)建立了候选节点等待时间函数(WTF);提出了基于能量的节点转发候选集选择策略(ECETX),综合考虑每个节点的归一化能量值(PI)与链路状况来产生投递矩阵(delivery matrix),以确定转发候选集中节点的优先级;利用以上策略设计了基于能量约束的机会路由(ECOR)。仿真实验表明,提出的ECOR比ExOR的网络寿命有明显提高,平均增长55%~70%左右,吞吐量也有15%~23%的提高。
  关键词:无线自组织网; 机会路由; 能量约束; 能量消耗模型; 等待时间函数; 候选节点集选择策略
  中图分类号:TP393
  文献标志码:A
  
  文章编号:1001-3695(2010)02-0642-04
  doi:10.3969/j.issn.1001-3695.2010.02.066
  
  Study of opportunistic routing with energy constraint in mobile Ad hoc network
  
  LI Qin-wei, CHEN Zhi-gang, ZENG Feng, QI Hua-mei, LI Deng
  
  (School of Information Science & Engineering, Central South University, Changsha 410083, China)
  
  Abstract:This paper proposed an opportunistic routing based on energy-constrainting in mobile Ad hoc networks to maximize the life of energy-constrainting wirless networks. Firstly, introduced the node energy-consuming model(NECM), and constructed the waiting time function(WTF). Then proposed the strategy for selecting forwarding candidates set based on metric named ECETX which consider both the unitary energy(PI) and the link state in order to build the delivery matrix, and then selected the nodes’ priorities which in forwarding candidates set. At last, designed an energy-constrainting opportunistic routing(ECOR) based on all of the above strategies. The simulation results show that the life of the network using ECOR is longer than using ExOR, increase by 60~70 percents in average, and the throughput increase by about 15~23 percents. ......
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