【毕业论文】基于UDP组播会议室系统的设计与实现.doc

PAGE lw 基于UDP组播会议室系统的设计与实现 lw 基于UDP组播会议室系统的设计与实现 摘 要 近两年来，网络 HYPERLINK \t _blank 视频会议厂商的大力推广以及 HYPERLINK / \t _blank 运营商的高调介入，成功将网络视频会议由专门的行业应用推入了普通大众的视线，使得网络视频会议成为信息化的重要标志。随着国力的增强和通讯及时性的要求，网络视频会议紧跟国外的发展步伐，在国内开始稳步发展。视频会议系统市场也步入稳步快速发展阶段。本次设计的网络会议室系统使用C#编程语言开发，基于.net技术，网络通信使用UDP数据报传输协议实现了点对点的通信和组播。本系统包括成员列表模块、留言板模块、发言模块、语音模块、视频模块、登陆与退出的模块。可以实现多人同时在线，可进行文字会议聊天,语音会议聊天，视频会议聊天,也可以清楚地浏览会议室中的成员。这个基于UDP组播的网络会议室系统，不仅满足了网络视频会议的各项要求，而且最大限度的利用了现有带宽从而节省了时间、资源和费用问题。 关键字：语音编解码 UDP用户数据包协议 组播 FOR UDP GROUP ON THE DESIGNAND IMPLEMENTATION OF THE SYSTEM ABSTRACT In the past two years, the network videoconferencing manufacturers of promoting and operators of the high success in the network video conference from special industry application in the general publics view, video conference information network becomes an important landmark. The power to enhance the timeliness and communication, internet video conference with the pace of development in china began developing steadily. Video conferencing system market stable and rapid development stage and enter. The design of the network system uses the programming language c#.net the technology development based on internet communication, the use of UDP data reported to the transport protocol for point-to-point communication and team on. This system includes a list of modules and message boards, speaking module, voice, video landing and out of the modules. You can achieve more people online, but at a meeting with the words, the voice, video conference, is also clear to members of the room. UDP group on the network based on the system, Not only to the internet video conference, and the best use of existing bandwidth which saves time and resources and the question of costs. Key Words: Voice Codec UDP User Datagram Protocol Multicast 目 录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc292582709 摘 要 PAGEREF _Toc292582709 \h I HYPERLINK \l _Toc292582710 ABSTRACT PAGEREF _Toc292582710 \h II HYPERLINK \l _Toc29258271