水下无线光通信传感器网络路由算法的研究

Research on Routing Algorithm in Underwater Wireless Optical Communication Sensor Networks

水下环境的多变性导致水下无线光通信传感器网络中个别节点无法满足视距传输的要求。为了恢复节点间的有效通信,基于中继协作传输方式,将混合指数广义伽马模型中的误码率作为中继选择指标提出了一种中继路由算法。为了确保所选中继节点在低能耗条件下能解决传感器网络中的链路故障问题,在中继选择时考虑了节点成功通信的功率阈值。仿真结果表明,该重建传输链路的中继协作路由算法可以在保证节点传输误码率符合要求的同时最大化网络的生命周期。

Due to the variability of the underwater environment, individual nodes in the underwater wireless optical communication sensor network cannot meet the requirements of line-of-sight transmission. In order to restore effective communication between nodes, this paper proposes a relay routing algorithm based on relay cooperative transmission method, and the bit error rate of the mixture exponential-generalized Gamma model is used as the relay selection metric. In order to ensure that the selected relay node can solve the link failure problem in the sensor network under the condition of low energy. In terms of relay selection, consider the power threshold when the node communicates successfully. The simulation results show that the relay cooperative routing algorithm for reconstructing the transmission link can guarantee low bit error rate and maximize the network lifecycle simultaneously.