无线传感网络中基于探测包的多径路由

Exploration packet-based multipath routing in Wireless Sensor Networks

多径路由是应对无线传感网络(WSNs)的链路质量差的重要技术。现存的构建多径路由依赖集中运算或迭代的分布式运算,消耗大量的运行时间。为此,提出基于探测包的多径路由(EPMR)。EPMR路由先利用探测包的传输,收集局部拓扑信息。依据接收探测包的到达时间,设置端口优先级,优先考虑端口优先级的节点参与路由。一旦参与了一条路径,节点不再参与源节点与目的节点间的其他路径,进而保证多径间的不相交性。仿真结果表明,提出的EPMR提升了数据包传输成功率,缩短了运行时间。

Multipath routing is essential to overcome the high loss rate in Wireless Sensor Networks(WSNs). Current proposals rely on centralized computation or iterative distributed algorithms and consume large amount of convergence time. Therefore, Exploration Packet-based Multipath Routing(EPMR) is proposed in this paper. EPMR routing first collects local topology information by using the transmission of exploration packets. According to the arrival time of the received exploration packet, the port priority is set, and the node that gives priority to the port priority participates in the route. Once participating in a path, the node will no longer participate in other paths between the source node and the destination node pair, thus ensuring the disjunction between multiple paths.Simulation results show that the proposed EPMR improves the packet transmission success rate and cuts the running time.