AOMDV多路径协议的研究和改进

Study and improvement of AOMDV multipath protocol

由于WSN网络中每个节点的能量都是有限的,并且很难对电池充电再使用,所以能量就成为衡量一个网络好坏的关键因素。针对节点间通信问题,传统的AOMDV协议仅仅考虑了时延最短因素,常常导致某些节点局部死亡,甚至会导致整个网络被分割。为此,提出一种新的协议RED-AOMDV,会考虑端到端时延的因素,会根据每条路径的最大剩余能量来选择最优路径。改进协议综合考虑每个节点中的能量值和时延,让已有的多路径均衡地承担转发数据的任务。实验结果表明,改进协议在节点能耗、投递率和网络生命周期等方面都较之前的协议有了较大的提高。

Since the energy of each node in WSN network is limited, and it is difficult to recharge the battery, so the energy becomes a key factor to measure the network performance. For inter-node communication problems, the traditional AOMDV（Ad hoc On-demand Multipath Distance Vector Routing） protocol considers only the shortest delay, which often leads some nodes to the local death, or even causes the entire network to be divided into many small networks. This paper proposes a new protocol RED-AOMDV, will consider the end to end delay factors, and will choose the optimal path according to the maximum residual energy of each path. The improved protocol considers the energy value and delay of each node to allow the data forwarding in between the existing multiple paths in a balanced way. The experimental results show that the proposed protocol has been greatly improved in terms of energy consumption, delivery ratio and network lifetime.