无线传感器网络中基于概率触发的负载均衡拓扑控制算法

多跳无线传感器网络中,部分节点由于担当数据转发任务,能量消耗较快,缩短了网络的生命期。充分考虑节点承担数据转发任务时负载过大的特点,用剩余能量和发射功率构建综合权值来决定节点担当数据转发任务的可能性,并通过设计的拓扑维护概率周期性的对网络拓扑进行局部调整,形成了基于概率触发的负载均衡拓扑控制算法,有效地解决了节点由于担当转发任务而造成能量过早耗尽的问题在一定程度上均衡了节点负载,延长了网络生命期。

Load-balancing Topology Control Arithmetic Based on Probability Triggering in Wireless Sensor Network

In multi-hop wireless sensor networks,the energy of some sensors which take on forwarding data is used up rapidly,so the lifetime span of networks is shortened.Considered that the load of sensor is heavy when it forwards data,integrated weight which is constructed by leaving energy and transmitting power is used to decide whether sensor forwards data or not.And a topology maintenance probability is designed to adjust local network topology periodically.Thus a new type of load-balancing topology control arithmetic is presented based on probability.The problem that sensors died ahead of schedule because of forwarding data is solved effectively.The load of sensors is balanced to some extent.The lifetime span of networks is prolonged.