Abstract: Mobile base station data collection mode can improve WSN performance.The optimal location of data buffer is studied based on the energy consumption pattern.The improvement is done based on the method proposed by Shi Gao-tao which r<<R.Come to the conclusion that：The network longest life is expectancy when the centre of the data buffer is located on 2^-2/2R-l，which l is a smaller number relation to r and R.The reasons of energy consumption unbalancing are analyzed，the method of calculating the data buffer location is proposed by a concise style.

Key words: Wireless Sensor Networks（WSN）, mobile base station, network optimization, energy consumption balancing, network life

摘要： 针对一种移动基站协助数据收集模式，依据无线传感器网络的能量消耗模式，改进了石高涛等人提出的r<<R情况下的缓冲区设计，得到的结论是：缓冲区的中心位于2^-2/2R-l时，网络的寿命最长，其中l为与r和R相关的一个较小的数，并分析给出了能量消耗不均衡的原因，提供了简洁的优化缓冲区设计的计算方法。对传感器网络的优化具有较好的指导作用。

关键词: 无线传感器网络, 移动基站, 网络优化, 能量消耗均衡, 网络寿命