利用切换模糊预测改进平滑切换中缓冲区管理的研究

Applying Handover Fuzzy Forecast to Buffer Management in Smooth Handover

移动IPv6下的平滑切换及缓冲区管理机制主要是为了解决无线网络切换中的丢包问题,然而由于MN缺乏对自身移动状况的感知,存在着比较严重的缓冲区浪费问题。该文利用一个简单的切换模糊预测模型对缓冲区管理机制进行了改进,并引入了一种自适应算法,增强了整个方案的适用性。仿真和分析表明,改进方案能够在尽量不影响上层协议性能的前提下,切实起到提高缓冲区利用率的作用,同时具有简单、适用性强的特点。

The buffer management scheme in Smooth Handover for Mobile IPv6aims to alleviate packet loss during handover process in wireless network.However,due to insensitiveness with the movement of mobile node(MN),the buffer management scheme has a serious buffer waste problem.This paper enhances the buffer management scheme with a handover fuzzy forecast model,and a self -adaptive algorism is also adopted.The simulation results and analysis demonstrate that the enhanced scheme can increase buffer utilization without degrading the upper layer performance.At the same time the enhanced scheme is simple relatively and can be applied widely.