一种基于丢包依赖体现的E模型的自适应播放延迟算法  

A New Adaptive Playout Algorithm Based on E-Model with Packet Loss Dependency Characteristic

作　　者：韩心慧[1] 司端锋[1] 邹维[1] 

机构地区：[1]北京大学计算机科学技术研究所,北京100871

出　　处：《北京大学学报（自然科学版）》2006年第3期388-394,共7页Acta Scientiarum Naturalium Universitatis Pekinensis

基　　金：教育部博士点基金资助项目(20040001050)

摘　　要：在Internet通信播放延迟算法的基础上,使用E模型作为分析工具,并考虑丢包依赖在E模型中的体现以及对用户语音感受的影响,提出了一种应用于多方实时通信领域的新的自适应播放延迟算法,使得用户终端在获得良好Internet通信参数的同时,进一步提升用户的语音感受。实验测试结果发现,这种算法相比于目前其他算法,在丢包率、延迟等方面都有显著的改善,同时能够降低系统的连续丢包现象。Adaptive playout algorithm is an important component of the lnternet multiparty real-time communication system. The authors bring forward a new adaptive playout algorithm in the multiparty real-time communication fields based on the consideration of the impact of the packet loss dependency using E model tool. The aim of the algorithm is to give the best voice feeling to users as well as the best voice quality. The experiment results prove the validity of the algorithm. The algorithm can reduce the packet loss probability and delay significantly, and reduce the consecutive packet loss simultaneously.

关 键 词：多方实时通信 自适应播放延迟算法 丢包依赖 E模型 

分 类 号：TP393.01[自动化与计算机技术—计算机应用技术]