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计算机工程 ›› 2007, Vol. 33 ›› Issue (11): 110-112,. doi: 10.3969/j.issn.1000-3428.2007.11.041

• 网络与通信 • 上一篇    下一篇

基于单向时延的自适应拥塞控制的研究

李 力1,黎 敏2,肖 庆3,江民斌2   

  1. (1. 南昌大学计算中心,南昌 330047;2. 南昌工程学院,南昌 330047;3. 江西蓝天学院,南昌 330047)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-06-05 发布日期:2007-06-05

Research on Adaptive Congestion Control Based on One-way Delay

LI Li1, LI Min2, XIAO Qing3, JIANG Minbin2   

  1. (1. Computing Center, Nanchang University, Nanchang 330047; 2. Nanchang Institute of Technology, Nanchang 330047; 3. Jiangxi Bluesky University, Nanchang 330047)
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-06-05 Published:2007-06-05

摘要: 对两种基于UDP实时流媒体拥塞控制机制——探讨基于丢包率的控制和基于往返时延 (Round-trip Time, RTT)的控制,提出一种在接收端通过单向延时预测拥塞的算法。与前两种拥塞驱动机制相比,单向时延自适应拥塞控制算法(AOWDCC)最大限度地缩短了拥塞反馈时间间隔,拥塞判断的实时性大大增强。采用NS模拟器,对基于丢包率的拥塞控制、基于RTT的拥塞控制和AOWDCC算法的性能进行仿真,验证了AOWDCC的优越性。

关键词: 拥塞控制, 往返时延, 单向时延, 实时多媒体通信, AOWDCC

Abstract: This paper analyzes and discusses two congestion control mechanism in the continuous media stream communications in which UDP Is used, one is based on loss-rate, the other is based on RTT, and it points out each deficiency. It proposes a congestion control mechanism AOWDCC based on one way delay. Test in network simulate proves the superiority of the mechanism.

Key words: Congestion control, Round-trip time(RTT), One-way delay, Real-time multimedia communication, Adaptive one-way delay congestion control(AOWDCC)

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