基于组播的协同学习网络系统

A cooperative e-learning system based on IP multicast

E-learning(数字化学习)系统的一个重要特征是对交互式协作的支持,它对于发展学生的创新意识、培养团队精神和信息素质具有重要意义。文章从E-learning系统的协同需求出发,设计并实现了一个支持交互式协同学习的网络应用系统,除了具有文档浏览、作业提交、信息查询等功能外,主要特点是支持应用共享、白板共享、文字实时通信和文件传输,从而为交互式协同学习提供支持。技术上,系统采用先进的IP组播传输结构,具有伸缩性好、复杂度低、实时性强等特点。

One of the important characters of the E-learning system is the support for interactive cooperation, it plays a very important role in the development of student creation awareness, cooperation spirit and the ability of using communication tools. In order to satisfy the need of this functionality of an E-learning system, this paper realizes a prototype with cooperative function to support application sharing, whiteboard sharing, real time communication and file transmission besides it has the function of document browse, task referring and imformation query. Based on the advanced IP muhicast infrastructure, the system has some significant features such as good scalability, low complexity and strong ability for real time application.