一种自适应的3G网络流媒体速率控制算法  

An Adaptive Algorithm of Multimedia Rate Control in 3G Network

作　　者：李晓城[1] 钱松荣[1] 

机构地区：[1]复旦大学通信科学与工程系,上海200433

出　　处：《小型微型计算机系统》2012年第7期1429-1432,共4页Journal of Chinese Computer Systems

摘　　要：在3G移动无线网络中,流媒体的服务质量不仅受限于无线链路的不稳定特性,如时延、抖动、丢包率等,客户端的缓存与处理能力也是重要的制约要素,为自适应速率控制算法的研究带来了很大的挑战.本文首先介绍了在3G网络中流媒体自适应传输的机制和研究现状,然后分析了点对点自适应传输的策略问题,并综合考虑通信链路与客户端能力问题,提出了基于客户端缓存的AIMD自适应速率控制算法(ABB-AIMD),最后通过仿真实验对算法进行验证.In the 3G network,the service quality of multimedia is not only restricted by the characteristics of link（packet loss rate,jitter,round-trip time,etc.）,but also by the client＇s ability of data buffering and processing,which would be a great challenge for adaptive rate control algorithm.In this paper we first introduce the mechanism of adaptive transmission and the up-to-date research results,then analyze the strategy of point-to-point adaptive transmission and overall consider the link characteristics and client buffer information,on which we propose the Adaptive Buffer-based AIMD algorithm（ABB-AIMD）.Finally we verify the effect of this algorithm in simulation experiment.

关 键 词：无线网络 流媒体 自适应算法 速率控制 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]