无线传感器网络中基于能效的最优数据包长

在无线传感器网络中，传感器节点的能效一直是非常关键的问题．当设定的数据包长度较大时，数据包在网络中传输出错的概率就会较大，而采用较小的数据包时，又会导致过多的控制包．如何通过设定数据包的最优长度进而提高节点能效是一个值得研究的问题．以往对数据包长度的设定一般是基于大量的数值、实物模拟，本文则尝试通过构造最优化模型来揭示数据包长度与无线电收发部件、通信信道、通信协议等因素的内在关系．最后，通过数值分析，说明了数据传输量与最优包长之间的联系．

Energy efficiency based packet size optimal design in wireless sensor networks

Energy efficiency is the critical factor in wireless sensor networks.Increasing the packet size may increase the probability of transportation error,while shortening the packet size may encounter too many control packets.It is a worthy issue to optimize packet size so as to improve the energy efficiency.Previous works on setting the packet size normally is based on extensive numerical or implemental simulation.In this paper,we try to construct an optimal model to establish the internal relationship among radio unit,channels and protocols.One numerical example illustrates the relationship between the optimal packet size and the data which to be sent.