基于CMRA路由协议改进算法

为了延长无线传感网络的生存时间,需要设计满足高效率、低功耗的路由算法。一种CMRA（intercluster head multi-hop routing algorithm）算法被提出来,这种算法通过节点通信能量消耗模型建立最小能量路径树,但CMRA对于簇头选择的能量分配不均衡,造成簇头结点负载过重。提出一种新的路由算法CMRA-EE（CMRA-energy efficient）,在簇头选举阶段引入节点能量参数,同时将簇头节点能量与距离作为代价参数,从而平衡了网络节点能耗。通过仿真对CMRA-EE算法进行性能分析与评价,结果显示,CMRA-EE算法在延长无线传感网有效生存时间方面比CMRA算法有了明显的改善。

Improved algorithm based on CMRA routing protocol algorithm

In order to extend the lifetime of wireless sensor networks, energy efficient protocols should be designed to adapt the characteristic of high-efficiency, low power routing algorithm. The CMRA （ intercluster head muhi-hop routing algo- rithm） has been proposed, the algorithm establishes a minimum energy path tree to the base station through energy con- sumption model. However,CMRA for the energy distribution of cluster head selection is not balanced, leading cluster heads consuming more energy. Based on the principle of a new routing algorithm CMRA-EE （ CMRA-energy efficient） , energy parameters are introduced in the cluster heads election phase , while the cluster heads energy and distance parameters as consideration to balance the energy consumption of network nodes. Simulation experiments demonstrate that, compared to the CMRA, the proposed CMRA-EE algorithm achieves better performance in terms of extending the effective network sur- vival time.