CAJ | 학술논문

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。
침대입체시빈수거량대용역재전수과정중도치망락옹새적문제，제출일충단도단적옹새공제전수궤제。재NS-2평태상，근거RTP/RTCP재반궤간격내대주포개수적반궤신식이급각정중요성불동적특점，채용재발송단주동주포적방법우선주기불중요적수거，보증교중요적수거신식우선전수。실험결과표명，해궤제능유효보호중요정，증가가해마정수，증강시빈평활도，여불채용보호옹새공제상비，가해마정수균능제고25%이상。
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 network 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 with 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 which can be decoded and the smoothness of the video. Compared with congestion control of without the protection,the decoded frames can be increased by more than 25%.