通信即时通信论文：基于校园网的综合通佩干事平台的设计与完成[新版]

即时通信论文基于校园网的综合通信服务平台的设计与实现

【中文摘要】计算机网络的普及和网络通信技术的飞速发展极大地改变了人们的交流方式,越来越多的人开始通过网络进行交流。随着数字化校园的建设,校园网络内部通信需求也在快速增长。论文结合校园网络的特点,在即时通信系统的基础上,开发了基于校园网的综合通信服务平台。该平台综合了电子邮件、 FTP等多种通信方式的优点,具有很强的交互功能、服务功能和管理功能,满足了广大师生的通信要求。首先,论文对当前流行的网络通信系统的功能进行了阐述,对校园网通信服务进行了需求分析,介绍了实现基于校园网的综合通信服务平台涉及的关键技术,包括IP多播技术、 H.323协议、音视频编码技术和数据库访问技术。然后,设计了基于校园网的综合通信服务平台的体系结构,包括终端、服务器组、数据库和数据库管理器四个部分,采用了C/S和P2P相结合的通信模式。对视频会议、数据库、用户域管理和个人文件柜进行了设计。在此基础上,论文详细阐述了各功能模块的具体实现。系统采用了基于角色的数据库访问控制技术;对用户域内的用户进行了分层次管理;采用IP多播技术实现视频会议模块,有效地减少了资源占有率。最后,对基于校园网的综合通信服务平台的各个模块进行了测试。总结了论文的工作,提出了下一步的工作方向。

【英文摘要】 The popularization of computer network and therapid development of network communication technologies have

greatly changed people’ s communication mode, more and morepeople begin to communicate through the network. With the buildof digital campus, the communication needs of campus networkgrowing rapidly. According to the characteristics of the campusnetwork, the paper designs the Campus Network InteractiveIntegrated Services Platform based on the instant messaging.The system integrates the advantages of E-mail, FTP and otherkinds of communication systems, provides very strong functionof interactive, service and management. It satisfies theteacher’ s and student’ s communication request.Firstly, thefunction offered by popular communication system is introduced.The paper carries on the demand analysis to the campus netcommunication services and introduces key technologies whichthe Campus Network Interactive Integrated Services Platforminvolves. These technologies include IP Multicast, H.323,audio and video coding and database access.Secondly, we designthe Campus Network Interactive Integrated Services Platform’s architecture, includes: terminal, server groups, databaseand database manager. We design the system framework combiningthe C/S and P2P. The video conference, personal file cabinet,user domain and database are designed. Based on this, detailrealization of each function module is explained. We use the

technology of RBAC in the database. we use the technology ofuser domain, and set levels in it. We use IP multicast as thefoundation of the video conference system. It successfullydecrease the resource occupation.Finally, we test theplatform’ s function modules, summarize the work and proposethe direction of the next work.

【关键词】即时通信视频会议H.323 IP多播角色访问控制

【英文关键词】 Instant Messaging Video Conference

H.323 IP Muticast RBAC