【作者】 王晶；

【导师】 施亮；

【作者基本信息】 上海交通大学 ， 控制理论与控制工程， 2012， 硕士

【摘要】 随着信息技术的发展,操作系统的备份与还原已在逐渐代替传统操作系统的安装或单机系统的备份还原。为了降低操作系统批量部署的时间代价,实验室提出了设计网络镜像部署系统的课题。网络镜像部署系统的基本设计思想是将操作系统镜像以多播方式发送到多个客户端,以便客户端使用镜像进行系统还原而建立操作系统。实现网络镜像部署系统的一个关键是设计可靠、高效的数据传输模块。本文主要介绍网络镜像部署系统中的数据传输模块设计,完成以下研究工作:1)介绍网络镜像部署系统,包括系统的模块组成、主要模块的工作原理等;2)基于范德蒙矩阵,设计了一种易于在计算机中编码实现的前向纠删码;3)提出了几种用于提高数据传输效率的发送调度机制;4)将卡尔曼滤波原理用于多播网络中的丢包率预测,基于卡尔曼滤波器的预测结果自适应地调整FEC参数。更多还原

【Abstract】 With the development of information technology, cloning and restoring images of operation system on computers is gradually replacing the method of OS installing in traditional way. In order to reduce the time cost of massive OS deployment, we brought forward an issue for designing a network image deployment system.The design concept of network image deployment system is multicasting OS image to massive client machines simultaneously so that client machines can restore a computer system from OS image. A key problem in the implement of network image deployment system, is designing a credible and efficient data transfer module.This paper focuses on the design of data transfer module in network image deployment system, including the following aspects: 1) Introduce the network image deployment system, including its structure and the principal functions of core modules; 2) Design a FEC code for packet loss recovery based on Vandermonde Matrix, which can be easily carried out in computer programming; 3) Design some data transmitting schedule methods to improve the transmission efficiency; 4) Apply the Kalman Filtering Theory to the forecasting of packet loss rate and use the prediction result of the Kalman Filter to adjust the FEC parameter.更多还原