基于RTP/RTCP主动丢包的立体视频传输研究  

Research on Stereo Video Transmission Based on RTP / RTCP Active Packet Loss

作　　者：李少博[1] 王晓东[1] 周宇[1] 陈美子 章联军[1] 

机构地区：[1]宁波大学信息科学与工程学院,浙江宁波315211

出　　处：《计算机工程》2015年第4期241-245,共5页Computer Engineering

基　　金：科技部国家科技支撑计划基金资助项目(2012BAH67F01);浙江省教育厅科研计划基金资助项目(Y201327703);浙江省科技厅创新团队自主设计基金资助项目(2012R10009-08);宁波市科技创新团队研究计划基金资助项目(2011B81002)

摘　　要：针对立体视频数据量大容易在传输过程中导致网络拥塞的问题,提出一种端到端的拥塞控制传输机制。在NS-2平台上,根据RTP/RTCP在反馈间隔内对丢包个数的反馈信息以及各帧重要性不同的特点,采用在发送端主动丢包的方法优先丢弃不重要的数据,保证较重要的数据信息优先传输。实验结果表明,该机制能有效保护重要帧,增加可解码帧数,增强视频平滑度,与不采用保护拥塞控制相比,可解码帧数均能提高25%以上。For the data of stereo video is much larger and the current network＇s bandwidth cannot be upgraded immediately,it is easy to cause the netw ork congestion problem in transmission. An end-to-end transmission control mechanism is proposed. In NS-2 platform,according to the feedback information,the number of packet loss is calculated in the feedback internal of RTP / RTCP and the characteristics of different frames w ith different importance,an active packet loss method at the sending is adopted to discard the less important data and to ensure the more important data transmit in advance. Experimental results show that the method can effectively protect important frames and increase frames w hich can be decoded and the smoothness of the video. Compared w ith congestion control of w ithout the protection,the decoded frames can be increased by more than 25%.

关 键 词：立体视频 拥塞控制 传输 端到端 RTP/RTCP协议 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]