基于AODV改进的水下传感器网络多径路由策略

Multi-path Routing Strategy for Underwater Sensor Networks Based on Improved AODV

根据水声信道特性对水声信道的链路传输质量与环路延时等参数进行估值,并在AODV协议的基础上进行改进,提出一种基于环路延时的多径路由传输策略。在初始化阶段根据链路传输质量得到多条路径,并根据定源宿点的环路延时选择主传播路径,从而达到降低网络能量开销与时延的目的。仿真结果表明,该算法相对于传统单径路由策略,能有效节约能量,延长生命周期。

The link transmission quality and round-trip delay are estimated according to the characteristics of underwater acoustic channel. A new routing strategy Multi-path RTT-based Transmission（MRT） is proposed based on the improvement of Ad hoc On-Demand Distance Veetor（AODV）. The proposed strategy finds multiple routes in the initial stage based on the link transmission quality and chooses the primary route according to the round-trip delay of a given source-destination pair. In this way, the energy consumption in the network as well as the delay is reduced. Simulation results show that compared with traditional one-path routing strategy, the MRT can reduce energy consumption and extend network lifetime.