Retransmission method for multimedia streaming in DCCP/IP networks

doi:10.3778/j.issn.1002-8331.2009.36.036

Computer Engineering and Applications ›› 2009, Vol. 45 ›› Issue (36): 123-125.DOI: 10.3778/j.issn.1002-8331.2009.36.036

• 网络、通信、安全 • Previous Articles Next Articles

Retransmission method for multimedia streaming in DCCP/IP networks

ZHENG Chao-mei，ZOU Qun，LI Rong-xin

Computer Center，Nanchang University，Nanchang 330031，China

Received:2008-09-17 Revised:2008-11-19 Online:2009-12-21 Published:2009-12-21
Contact: ZHENG Chao-mei

DCCP下的一种流媒体重传机制

郑超美，邹群，李荣鑫

南昌大学计算中心，南昌 330031

通讯作者: 郑超美

Abstract

Abstract: Retransmission-based error recovery is inappropriate for multimedia applications，because of its latency.This solution can be attractive because it requires minimal network bandwidth，processing cost and efficiently improves the stream quality.A source controlled selective retransmission algorithm is presented with a decision algorithm based on the RTT and sending rate and the network congestion control determined by the TFRC.The emulating results show that significant quality improvement is possible with the proposed selective retransmission scheme.

Key words: retransmission, Datagram Congestion Control Protocol（DCCP）, TCP-Friendly Rate Control（TFRC）, Quality of Service（QoS）

摘要： 由于差错重传机制存在各种缺点，并不适合流媒体传输，若它的处理过程占用最小网络带宽和时间，将大大提高流媒体的质量。提出了一种基于DCCP的源端控制的选择重传机制（TBSR），其重传由决策算法决定，而发送速率和拥塞控制由TFRC控制。仿真结果表明，机制能大大提高流媒体视频质量。

关键词: 重传, 数据拥塞控制协议（DCCP）, TCP友好速率控制机制（TFRC）, 服务质量

CLC Number:

TP393

ZHENG Chao-mei，ZOU Qun，LI Rong-xin. Retransmission method for multimedia streaming in DCCP/IP networks[J]. Computer Engineering and Applications, 2009, 45(36): 123-125.

郑超美，邹群，李荣鑫. DCCP下的一种流媒体重传机制[J]. 计算机工程与应用, 2009, 45(36): 123-125.

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Retransmission method for multimedia streaming in DCCP/IP networks

DCCP下的一种流媒体重传机制

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