改进的无线传感器网络覆盖区域节点调度算法

Research on Nodes Scheduling in Coverage Area of Wireless Sensor Networks

节能覆盖对于提高无线传感器网络的性能有着重要的意义。针对当前传感器网络的算法中存在的热区问题,提出一种在传感器网络非均匀分布部署下的基于能量预测的节点覆盖调度算法。该算法首先对网络中的节点进行非均匀部署,离基站距离较近区域部署的节点密度较大,而较远的密度小,然后综合考虑节点覆盖效率和能量消耗进行节点调度,从而使能量消耗更加均衡,最后对该算法进行了仿真实验和性能分析。仿真结果表明与当前经典的覆盖节点调度算法相比,该算法提高网络覆盖率、降低了网络能耗,且网络生命周期也相应的延长,能够保证网络内大多数节点达到能耗均衡。

Energy-saving coverage can improve the performance of wireless sensor networks and has important significance.To resolve the hot zones in the algorithm for the current sensor networks,proposed an algorithm for the non-uniform distribution in the deployment of sensor networks under energy-based scheduling for prediction of node coverage.The algorithm first deploys the nodes of the network non-uniformly.The deployment density is higher if the nodes are near the base station,and lower if farther.Then the node average energy consumption and energy balance factor are considerd for node scheduling to achieve more balanced energy consumption.Lastly,the algorithm simulation and performance analysis are carried out.The results show that compared with the classical nodes scheduling algorithm,the propsed one can improve the network coverage.At the same time,the network has a corresponding extension of the life cycle,and achieves the energy balance for majority of network nodes.