下一代全IP通信网移动多媒体业务的仿真研究

下一代移动通信网络将是一个全IP化的综合、开放的系统，并且可以提供语音、数据和多媒体等多种业务。该文讨论了全IP通信网络的发展，分析了移动多媒体业务的特性及其在全IP网络的实现技术，构造了一个基于IP的运行实时多媒体业务的网络模型并进行了性能仿真。仿真结果表明：网络运行移动多媒体业务情况下有效单元面积远小于现有移动通信网络，必须采用更有效的网络结构布局(如微蜂窝)来保证业务的正常运行。在此基础上，恰当地选取系统参数如带宽、设备缓存和数据率可以充分保障实时多媒体业务的质量和连续性。

Simulation Research on Mobile Multimedia Service of Next Generation All-IP Network

The next generation mobile communication network is an all - IP, integrated and exoteric network. It can provide various services such as voice, data and multimedia. This paper discusses the development of all - IP communication network and analyses the characteristics of mobile multimedia service. An IP - based real - time multimedia service network model is constructed and the performance simulation is made. Simulation results show that the available cell area of the mobile multimedia network is much smaller than that of the current mobile communication network. Thus, effective network hierarchical structure, such as micro - cell,is needed. What is more, suitable bandwidth, buffer and data rate are help to guarantee the quality and continuity of the mobile multimedia service.