基于MPEG-4视频流的QoS映射研究  

QoS mapping based on MPEG-4 video streams

作　　者：马志卫[1] 张占军[2] 

机构地区：[1]天津大学管理学院,天津300072 [2]装甲兵工程学院信息工程系,北京100072

出　　处：《计算机应用》2006年第4期799-802,共4页journal of Computer Applications

摘　　要：基于XVID和实时传输协议(RTP)提出了一种MPEG4视频流的服务质量(QoS)映射管理方法。分析了MPEG4视频流特点、编解码软件和QoS分层管理方法,提出了基于RTP协议的QoS管理逻辑结构、不同层次上的QoS参数,即应用层和系统层QoS参数,以及应用层到系统层QoS参数的映射算法。在模拟网络环境下的实验结果表明这种QoS参数的映射算法能够保证MPEG4视频流的服务质量。The mapping of Quality of Service（QoS） for MPEG-4 video streams was presented based on XVID MPEG-4 codec and RTP（ Real-time Transport Protocal）. First, the characteristics of MPEG-4 video streams, codec and layered management of QoS was analyzed. Then, a logical structure of QoS management based on RTP and QoS parameters of MPEG- 4 video streams in application layer and system layer were presented. The QoS mapping algorithm and calculating formulas from application layer to system layer were put forward. Finally, results of simulation experiments reveal that the proposed mapping algorithms and formulas can meet QoS of MPEG-4 video streams.

关 键 词：MPEG-4 QOS映射 XVID 实时传输协议 

分 类 号：TP316.5[自动化与计算机技术—计算机软件与理论]