无线传感器网络多路径路由算法的研究

Research of Multipath Routing Algorithm for Wireless Sensor Networks

在多路径路由算法的研究中,仍然存在着一定的局限性,如没有充分考虑网络中链路的多重特性.因此,文中在定向扩散路由算法的基础上提出了一种多路径路由算法(EDB-MRA).该算法在源节点和目的节点之间建立多条路径,根据网络链路中的3个特征值——能量消耗、延时和带宽,给每条路径赋予一定的选择概率,使得数据总能在链路性能较优的多路径中传输,从而延长了网络的生存周期,提高了传输的可靠性.

In the multipath routing algorithm, there are still some limitations, such as： It does not sufficiently consider multiple metrics of the network link. In this paper, we propose a multipath routing algorithm （EDB-MRA） on the basis of Directed Diffusion for wireless sensor networks. The algorithm establishes multiple paths from source node to destination node. According to the three metrics of network link-energy consumption, delay and bandwidth, each path can be given a choices probability to make data always transmit on multiple paths of better link performance.