改进的冲突检测算法仿真与分析

Simulation and analysis of the adaptive binary exponential backoff algorithm

为改善截断二进制指数退避算法(TBEB)的捕获效应,研究了一种改进的自适应冲突检测退避算法(ABEB),通过改进帧间时隙和退避参数的上限值来提高以太网的性能.从仿真结果可以看出,平均延迟减小了0.2 ms,捕获效应减小,吞吐量和网络利用率也有所增大.这对以太网实时业务和对无线局域网的碰撞检测具有参考价值.

In order to improve the capture effect adopted by backoff algorithm TBEB, a new adaptive binary exponential backoff algorithm （ABEB） is presented. This method can improve the performance of Ethernet via two ways： betterment the upper limit of the backoff parameter and the interframe spacing. The simulation result shows that the delay of ABEB algorithm is 0.2 ms smaller than old algorithm, the delay jitter, throughput and the utilization are also better. It can solve the problem of capture effect and be adaptive to real-time application.