[1]陈霞,蔡灿辉.网上视频传输拥塞控制策略的实现[J].华侨大学学报(自然科学版),2008,29(2):208-212.[doi:10.11830/ISSN.1000-5013.2008.02.0208]
　CHEN Xia,CAI Can-hui.A Source-based Congestion Control Policy on IP Network for Real-Time Video Transport[J].Journal of Huaqiao University(Natural Science),2008,29(2):208-212.[doi:10.11830/ISSN.1000-5013.2008.02.0208]
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网上视频传输拥塞控制策略的实现()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第29卷
期数:
2008年第2期
页码:
208-212
栏目:
出版日期:
2008-04-20

文章信息/Info

Title:
A Source-based Congestion Control Policy on IP Network for Real-Time Video Transport
文章编号:
1000-5013(2008)02-0208-05
作者:
陈霞; 蔡灿辉
华侨大学信息科学与工程学院; 华侨大学信息科学与工程学院 福建泉州362021; 福建泉州362021
Author(s):
CHEN Xia;  CAI Can-hui
College of Information Science and Engineering, Huaqiao University, Quanzhou 362021, China
关键词:
服务质量;  拥塞控制;  速率控制;  速率整形;  自适应编码
Keywords:
quality of service;  congestion control;  rate control;  rate shaping;  adaptive video encoding
分类号:
TP393.07
DOI:
10.11830/ISSN.1000-5013.2008.02.0208
文献标志码:
A
摘要:
探讨在没有服务质量(QoS)保证的IP网络中,根据反向信道反馈的网络状态信息,自适应调整输出码率,实现基于信源的实时视频传输控制策略.提出一种智能速率整形算法并实现在策略控制模块中,使传输缓冲区的输出速率与网络带宽相匹配.采用基于Lagrangian代价函数的最优前向自适应编码方法,根据网络带宽和缓冲区状态确定编码参数.仿真实验表明,这种算法非常高效,通常10次以内就能达到收敛,而且它能保证找到的都是质量较好的点,既合理利用网络资源又不会导致网络拥塞.
Abstract:
This paper discusses under IP network environment without quality of service(QoS) guarantee,how to adapt output rate according to the network states by backward channl,in order to realize a source-based real-time video transport control policy.This thesis presents a intelligent rateshaping algorithm nested in the policy control module,to insure that transport bufffer′s output rate matches network bandwidth.This adopts the optimization forward self-adaptive encoding based on Lagrangian cost function,to confirm coding parameter by network bandwidth and buffer states.The simulation experiments indicate this algorithm is highly efficient,because it gets convergence within 10 times and can find better quality point,consequently not only utilizes network resource reasonably,but also results in no network congestion.

参考文献/References:

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[2] SCHULZRINNE H, CASNER S, FREDERICK R. RTP:A transport protocol for real-time applications [EB/OL]. http://rfc.net/rfc3550.html, 2003.
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[5] FLOYD S, FALL K. Promoting the use of end-to-end congestion control in the internet [J]. IEEE/ACM Transactions on Networking, 1999(4):458-472.doi:10.1109/90.793002.
[6] REIBMAN A R, HASKELL B G. Constraints on variable bit-rate video for ATM networks [J]. IEEE Transactions on Circuits and Systems for Video Technology, 1992(4):361-372.doi:10.1109/76.168912.
[7] DALGIC I, TOBAGI F. Performance evaluation of atm networks carrying constant and variable bit-rate video traffic [J]. IEEE Journal on Selected Areas in Communications, 1997, (6):1115-1131.doi:10.1109/49.611163.
[8] LAKHSMAN T V, ORTEGA A, REIBMAN A R. VBR video:Trade-offs and potentials [J]. Proceedings of the IEEE, 1998, (86):952-973.doi:10.1109/5.664282.
[9] KRUNZ M, TRIPATHI S. Bandwidth allocation strategies for transporting variable bit-rate video traffic [J]. IEEE Communications Magazine, 1999(1):40-46.doi:10.1109/35.739277.

备注/Memo

备注/Memo:
国家自然科学基金资助项目(60472106); 福建省自然科学基金资助项目(A0410018); 华侨大学科研基金资助项目(04HZR17)
更新日期/Last Update: 2014-03-23