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为了延长无线传感器网络(WSNs)的生存周期,提出了联合优化物理层和网络层的跨层算法.首先通过物理层的功率控制方法,初步确定可能参与通信传输的传感器节点候选集;然后在节点候选集中,综合考虑传感器节点的接入概率、端到端通信链路的单跳成功传输概率和端到端通信链路的能量效率,以达到均衡性地进行网络层路由选择的目的,实现传感器网络的端到端通信传输过程.仿真结果表明,在保证能量效率的同时,该算法可以有效地延长无线传感器网络的生存周期.
In order to prolong the lifetime of wireless sensor networks (WSNs), a cross-layer algorithm is proposed to jointly optimize the physical layer and the network layer.Firstly, through the physical layer power control method, the sensor node candidate sets that may participate in the communication are initially determined. Candidate concentration, taking into account the sensor node access probability, end-to-end communication link single hop success probability and end-to-end communication link energy efficiency in order to achieve a balanced network layer routing purposes, to achieve the sensor Network end-to-end communication transmission process.The simulation results show that the algorithm can effectively extend the life cycle of wireless sensor networks while ensuring energy efficiency.