将无线传感器网络寿命定义为u及ξ的函数,即LT=f(u,ξ),其中,u是传输一个单位数据至基站(base station,简称BS)或接收点(sink)的平均能耗,眚代表在二维WSN区域内的流量分布.基于上述模型,详尽地分析了3个著名路由协议的网络寿命.使用文中提出的方法,可以计算无线传感器网络中任意位置、任意时间的平均能耗率.所提出的方法已由仿真结果验证.
In this paper, the lifetime of wireless sensor networks (WSNs) is modeled as a function of u and ξ, i.e. LT=f(u, ξ), where u is the mean value of energy dissipation when transmit one unit data to a base station or sink, and ξ denotes the flow distribution in a 2D WSN area. The lifetime analysis for three famous routing protocols is presented in detail based on the model mentioned above. With the methods proposed in this paper, the average energy dissipation rate of anywhere and anytime in WSNs can be calculated. The metrics presented in this paper has been validated by simulation results.