保证服务质量的最小能量无线传感器网络路由算法

被引:7
作者
余荣 [1 ]
孙智 [1 ]
周海军 [2 ]
梅顺良 [1 ]
机构
[1] 清华大学电子工程系
[2] 西安通信学院
关键词
路由协议; 无线传感器网络; 服务质量; 能量节约;
D O I
10.16511/j.cnki.qhdxxb.2007.10.020
中图分类号
TN929.5 [移动通信]; TP212.9 [传感器的应用];
学科分类号
080402 ; 080904 ; 0810 ; 081001 ; 080202 ;
摘要
为了减小无线传感器网络(wireless sensornetwork,WSN)的路由能量开销,同时保证数据传输的服务质量,提出了一种新的路由算法,称之为DEER(delay-constrained energy efficient routing)算法。DEER算法的核心思想是将路由选择和传输速率控制相结合。算法首先采用概率分析方法,估计出最优的总跳数以及相应的传输速率;然后再逐跳选择出后续节点,构成整条路径。理论分析和计算机仿真结果都表明,在现有的路由算法中,如果端到端传输时延变小,那么能量消耗将呈指数上升趋势;而在DEER算法中,二者的关系将从指数退化成多项式关系。可见,DEER算法不但保证了端到端传输的服务质量,而且大幅度地降低了路由能量开销。
引用
收藏
页码:1634 / 1637
页数:4
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