基于优化工作周期的EH-WSNs的簇路由

A Duty-Cycle based Clustering Energy Harvesting Wireless Sensor Networks

基于低能量自适应簇层(Low energy adaptive clustering hierarchy)协议,提出面向能量采集WSNs的基于优化工作周期的簇协议,记为DC-LEACH。DC-LEACH协议利用工作周期(duty Cycling,DC)技术对LEACH协议进行改进。首先,给簇头选择设置DC,并保证簇头CH的比例。然后,基于节点的能量采集率和数据包到达率优化数据传输的DC,使得节点能够调整数据传输的工作周期,进而维持能量中和操作(Energy Neutrality Operation,ENO),最终延长网络寿命。最后,分析了最优簇头CH数。仿真结果表明,提出的DC-LEACH协议在吞吐量和网络寿命方面的性能优于EA-LEACH和C-LEACH协议。

For Low energy adaptive clustering hierarchy( LEACH),a Duty-Cycle based Clustering Energy Harvesting Wireless Sensor Networks is proposed in this paper,which is marked as DC-LEACH. DCLEACH is the extension of LEACH based on the technique of duty cycling. In DC-LEACH,a duty cycle for CH assignment that guarantees a targeted CH percentage was derived. Then,an efficient DC that ensures a perpetual network operation was developed for data transmission based on the node’s energy harvesting and data arrival rates. Simulation results show that the proposed DC-LEACH enhanced network performance in terms of throughput,lifetime with respect to benchmark protocols( EA-LEACH and C-LEACH).