MPE^2S:基于多路径纠删编码的无线传感器网络可靠传输策略

MPE^2S: Multi-paths and Erasure Encoding Based Reliable Transmission Strategy for Wireless Sensor Networks

传输可靠性是衡量无线传感器(Wireless sensor networks,WSN)网络性能的一个重要指标.针对节点故障会影响网络传输稳定性和可靠性的问题,提出了基于多路径纠删编码的无线传感器网络可靠传输策略(Multi-paths and erasure encoding strategy,MPE2S).根据反映链路质量的最优最差蚂蚁系统的信息素归一化值,在相邻等级节点间建立多条互不交叉的传输路径,将源数据包经纠删编码的数据片沿多条路径分配和传输以实现负载均衡和故障容错.理论分析和仿真结果表明,MPE2S具有较高数据包接收率、数据准确率和能效性,体现了良好的故障容错性、数据传输稳定性和可靠性.

Transmission reliability is one of the important indexes reflecting the performance of wireless sensor networks （WSN）. Aiming at the issue that the nodes~ failures affect the stability and reliability of the data transmission, a multi- paths and erasure encoding based reliable transmission strategy （MPE2S） is presented. According to the normalized values of the ants~ pheromone produced in best-worst ant system which reflect the quality of links, multiple disjoint paths for data transmission are established between the nodes with the adjacent hierarchies. The erasure-coded data packets from the source data is to be allocated to and transmitted through the multi-paths by the load balance mechanism to realize the fault tolerance. Theoretical analysis and simulations show that MPE2S has a higher receiving rate and accuracy rate of the data packets and energy efficiency. It has the good performance of fault tolerance, stability and reliability of data transmission.