WSN中结合近源数据聚合和拥塞控制的低能耗路由协议

Low Energy Routing Protocol Combined with Near Source Data Aggregation and Congestion Control in WSN

在无线传感器网络(WSN)中,由于感知数据传输引起的能量消耗直接影响网络寿命。数据聚合能消除密集WSN中的冗余数据传输以节约能源,为此,提出了一种WSN中结合近源数据聚合和拥塞控制的低能耗路由协议。首先,构建网络的无结构拓扑,根据数据可靠性权重和节点成本函数来选择数据转发节点。然后,每个中继节点通过近源数据聚合对接收的数据包进行聚合,以此降低传输能耗。另外,在数据转发过程中,各节点根据接收阈值来决定是否转发数据,以此实现拥塞控制。仿真结果表明:提出的协议在能源效率、可靠性和传输延迟方面获得了优异的性能。

In wireless sensor network,the energy consumption due to the sensed data transmission directly affects the network lifetime.Data aggregation can conserve energy by eliminating the redundant data transmission in dense WSN,so this paper proposed a low-energy routing protocol based on near source data aggregation and congestion control in wireless sensor network.Firstly,the unstructured network topology is constructed,and the data forwarding nodes are selected according to the data reliability weight and node cost function.Then,each forwarding node aggregates the received data packets through near-source data aggregation to reduce transmission energy consumption.In addition,in the process of data forwarding,each node decides whether to forward data according to the receiving threshold,so as to achieve congestion control.The simulation results show that the proposed protocol achieves superior performance in energy efficiency,reliability and transmission delay.