多异构网重叠区域能耗均衡的协作路由研究

Energy-balanced Cooperative Routing Research of Multi-heterogeneous Overlapped Area

随着无线传感网络WSNs(wireless sensor networks)的广泛应用,同一区域被多个WSNs重叠覆盖已成普通现象。在这种情况下,可通过多个WSNs间协作传输数据包,提高多个WSNs的寿命。为此,对多异构网重叠区域能耗均衡的协作路由进行研究,提出基于路由寿命的协作路由RLCR(routing lifetime-based cooperative routing)算法,均衡了各异构网的能耗,提高了它们的网络寿命。RLCR算法引入了能够多信道转发数据包的共享节点,它们能够与任何WSN通信。同时依据按需路由协议AODV(adhoc on-demand distance vector)建立路由表,并依据路由寿命选择路由,尽可能地延长各网络寿命。仿真结果表明,与基于EBCR算法相比,RLCR算法提高了网络寿命和时延性能。

As wireless sensor networks （WSNs） are widely diffused, multiple overlapping WSNs constructed on the same area become more common. In such a situation, lifetime is expected to be extended by cooperative packet forwarding. Therefore, energy-balanced of multi-heterogeneous WSNs overlapped area-based cooperative routing was analyzed in this paper, and the routing lifetime-based cooperative routing （RLCR） was proposed. It balanced energy consumption of multi-heterogeneous WSNs, and prolonged its network lifetime. RLCR protocol introduced shared nodes that can use multiple channels to relay data packets, and can communicate with any WSNs here. In RLCR protocol, each sensor node creates its routing table based on Ad Hoc Ondemand Distance Vector （AODV）, and selects the route with maximum route lifetime. Simulation results show that RLCR outperform in terms of lifetime and delay, compared with EBCR protocol.