无线传感器网络最大生命期通信模型研究*

提出一种新的无线传感器网络最大生命期通信模型,研究了无线传感器网络中多源多链路多基站的最大生命期问题.为均衡数据流量分布,源节点产生的数据可以通过多条链路转发到多个基站.针对无线传感器网络能量和带宽受限等多约束条件,建立以网络最大生命期为最优目标和以降低节点处的数据量为次优目标的线性规划模型,依靠现有的分布式算法解决该模型.通过仿真实验验证了通信模型在多基站环境中的性能,并表明所提出的模型能够有效地延长网络生命期.

Maximum lifetime communication model of wireless sensor network

This paper presented a new maximum lifetime communication model of wireless sensor network. Discussed the maximum lifetime of wireless sensor network with multiple sources, multiple paths, multiple sinks deeply. It delivered the data generated by source node to multiple paths and reached multiple sinks in order to balance the flow distribution. According to the energy constraints and data traffic conservation of wireless sensor networks, formulated the problem as a liner program (IP)problem by maximizing the lifetime at which the first node ran out of energy and reduced the amount of data passing the node for the suboptimal goal. Relying on the optimization of a distributed algorithm, the IP could be resolved. It verified the performance of communication model in multi-base station environment by simulation. The result shows that the network lifetime can be maximized in communication model.