摘要
在移动自组网中,减少移动节点电池能量消耗,延长网络总的使用时间,成为路由协议性能优劣的一个很重要的指标。该文提出了一种关于节点能量估价函数PCF(PowerCostFunction)新的计算方法,这个函数考虑了节点能量的剩余和当前能量的使用情况,能够很好地在一条路径中找到有效的关键节点。该文还结合路径的最小能量代价和PCF,提出了一种加权路由选择算法WRMPCF(theWeightedRouteMechanismbasedPCF),有效延长了瓶颈节点的生命和网络的使用时间。以DSR路由协议为例,通过ns-2模拟的结果显示WRMPCF路由算法比以前相关的路由算法具有更好的性能。
Untethered nodes in mobile ad-hoc networks strongly depend on the efficient use of their batteries.This paper proposes a new metric,the Power Cost Function(PCF),to locate key node of a route according to current power conditions.This metric is combined with the value of the remaining battery capacity and using condition to determine which nodes can be part of an active route.This paper describes new route selection mechanisms for MANET routing protocols,which is called the Weighted Route Mechanism based PCF(WRMPCF).It extends nodel battery life and the duration of paths,and minimizes the total transmission power consumed per packet.Using the ns-2 simulator and the dynamic source routing(DSR) protocol,this paper compares WRMPCF against prior proposals for power-aware routing and show that using the power cost fuction for power-aware route selection offers superior performance results.
出处
《计算机工程与应用》
CSCD
北大核心
2004年第36期15-17,21,共4页
Computer Engineering and Applications
基金
国家自然科学基金网络与信息安全重大研究计划(编号:90304010)
湖南省自然科学基金(编号:03JJY5032)
关键词
移动自组网
路由选择
能量估价函数
Mobile Ad Hoc Network,route selection,Power Cost Function(PCF)
