一种适合窄带网络多媒体教学的文件传输协议──NFTP的研究与实现

The Research of a New File Transfer Protocol──NFTP which is Fit for Multimedia Instruction in Narrowband Network

目前在网络环境下进行多媒体教学，网络速度是一个严重的瓶颈问题。在分析瓶颈产生的基础上，作者提出了一个新的文件传输协议──ＮＦＴＰ（Ｎａｒｒｏｗｂａｎｄ Ｆｉｌｅ Ｔｒａｎｓｆｅｒ Ｐｒｏｔｏｃｏｌ窄带文件传输协议），利用广播数据包方法解决多媒体教学中的速度问题，并设计了一组协议原语，用于协议的描述。

At present,network speed is a serious bottleneck problem for multimedia instruction in network environment. This paper presents a new file transfer protocol──Narrowband File Transfer Protocol,Which is based upon the analysis of the reason of the bottleneck.Using the method of the broadcast data packet,we can settle the problem of the network speed.Then a kind of Protocol description primitive is used to describe the protocol.