水下无线传感网络中一种地理-机会的混合路由

A geographic-opportunistic hybrid routing for underwater wireless sensor networks

为了提高水下无线传感网络(UWSNs)的数据采集效率,提出基于地理-机会的水下无线传感网的混合路由(GOHR)。当源节点需要转发数据包时,首先计算候选转发节点集,并依据集内节点的归一化权重进行排序,形成转发簇;然后分析每个簇的期望权重值;最终由最大期望权重值的簇内节点转发数据包。同时,引用时延机制,抑制冗余数据包。仿真结果表明,提出的GOHR协议提高了数据包传递率,降低了数据包传输时延。

To improve the data collection in underwater wireless sensor networks （UWSNs）, a geographic and opportunistic hybrid routing （GOHR） is proposed in this paper, which is marked as GOHR. In GOHR, source node determines the neighbors candidate set, which is ordered by normalized advance metric, forming neighbors candidate clustering. Then, it computes the Expected Packet Advanced（EPA） of each cluster, and the cluster with the highest EPA is selected as the next-hop forwarder. In order to void colli- sion in forwarding packet, the time-delay mechanism is adopted. Simulation results show that GOHR protocol has a good perfor- mance in terms of packet delivery ratio and end-to-end delay.