中文摘要：

为了解决无线传感器网络汇聚节点存在的溢出问题,基于α-稳定分布和令牌桶建立了一种新的接纳控制方法（connection admission control based onα-stable and token bucket,CACαTB）。该方法首先给出了网络演算中服务曲线与到达曲线的定义,然后利用α-稳定分布推导了令牌桶的控制参数,并建立面向分形业务流的接纳控制算法。最后利用NS2进行实验仿真,深入研究了丢包率、带宽利用率、缓冲区、以及分形参数之间的关系。与其他方法相比,结果发现CACαTB具有较好的适应性。

英文摘要：

In order to solve the overflow of aggregation node in wireless sensor network,a novel connection admission control method（ connection admission control based on α-stable and token bucket,CACαTB） is presented by α-stable distribution and token bucket. At first,the service curve and arrival curve for network calculusare definited in this method,and the control parameters of Token bucket are derived with α-stable distribution. Then,the connection admission control algorithm is proposed for fractal traffic. Finally,a simulation with NS2 was conducted to research on the relationship among dropping probability,bandwidth utilization probability,buffer,and fractal parameter. Compared to other algorithms,the simulation result shows CACαTB has good suitability.