导　　师： 高航

学科专业： H1203

授予学位： 硕士

作　　者： ;

机构地区： 南京航空航天大学

摘　　要： INTERNET和移动通信是目前信息技术的两大热点技术,移动互联网正是这两大热点技术的结合,而可移动的个人多媒体通信业务则被认为是未来信息交流的主要特征.该文首先介绍了无线网络的基本原理,分析了基于POCKET PC平台的移动互联网的实现方式和路由技术.然后设计了移动多媒体通信系统的方案,按照结构模型对数据通信协议和多媒体流的采集播放以及编码解码作了详细的论述,并在此基础上对多媒体实时数据交换技术作了深入探讨,重点研究了缓冲预取技术、网络带宽监控算法以及终端调度策略.另外,鉴于当前网络通信速率较低难以满足多媒体通信对带宽的要求,进一步分析了多媒体通信中的服务质量问题,提出相应的解决方案并将之应用到系统中进行优化.最后,文章总结了该移动多媒体通信系统中的不完善之处,并对今后的扩展提出了设想. The most fascinating technologies nowadays are Internet and mobile communication. With the rapid development of them, mobile Internet is walking into our lives and mobile multimedia transport seems to become the main characteristic of the remote communication in the future. In this paper, the principle of wireless network is introduced in the first, and the technology of mobile Internet based on the Pocket PC platform is analyzed in detail. Then, the project of mobile multimedia communication is devised. According to the model of this project, we discuss about how to control data communication, how to translate the multimedia analog data into the digital data, and how to encoding and decoding the data. The real-time multimedia transport technology is also researched, in which we emphasis on the buffer preparation technology, the bandwidth inspection algorithm and the terminal scheduler. In addition, QoS in the multimedia transport can not be neglected. Considering the current bandwidth of the network is too narrow, we analyze the process of data transport and provide several approaches to optimize the project. Finally, we summarize flaws in this project and bring forward the design of the system extensions.

关 键 词： 多媒体通信 路由技术 移动多媒体通信 网络通信

分 类 号： [TN919.85 TP393.4]

领　　域： [电子电信] [电子电信] [自动化与计算机技术] [自动化与计算机技术]