水下传感网络中有效选择转发节点的协作路由

Efficient Relay Selection Algorithm for Cooperative Routing in Underwater Sensor Networks

协作通信充分利用了无线信道的广播特性,提高了水下传感网络USNs(Underwater Sensor Networks)的链路质量和数据传输的可靠性。为此,提出基于链路质量和物理距离选择转发节点的协作路由SRCR(Selecting Relays based link quality indicator and physical distances Cooperative Routing)。当源节点有数据要传输时,它就利用链路质量的指标(信噪比和到达时间)以及离目的节点的物理距离(跳数),从邻居节点中选择转发节点和协作节点。与传统的非协作路由相比,提出的SRCR路由有效地降低端到端时延和能耗,并提高了数据包传递率。

Cooperative Communication takes advantage of broadcast nature of wireless channel to enhance link quality and reliability for Underwater Sensor Networks( USNs). Therefore,Selecting Relays based link quality indicator and physical distances cooperative Routing( SRCR) is proposed in this paper. Sources that have data to transmit independently select their own relays among their neighbors based on their link quality indicators,i.e.,Signal-to-Noise Ratio( SNR),Time of Arrival( ToA) and their physical distances represented by hop count( HC) to the destination.Our simulation results show that the proposed routing improves the network performance in terms of end-to-end delay,energy consumption and packet delivery ratio if compared to conventional non-cooperative routing scheme.