摘要
为满足视频会议中网络流量的平滑稳定性以及公平竞争性,设计了一种新的传输拥塞控制方案——CTP(Conference Transmission Protocol)。CTP在逻辑上分为DCC(Dynamic Congestion Control Layer)和RAC(Rate Amended Control Layer)两层。DCC层实现了允许丢包为前提的动态退避策略,避免出现网络拥塞;RAC层建立了基于正态分布的网络流量模型,通过分析网络的竞争情况,调整带宽,使得传输速率逐渐收敛到平均速率,实现稳定传输。通过在网络环境中仿真实验,验证了CTP具有良好的拥塞控制能力和传输稳定性。
To meet smoothing stability and fair competition of network traffic in video conferencing,we designed a new congestion control scheme for transmission-CTP.CTP is logically divided into two layers,called DCC and RAC.DCC layer achieves dynamic backoff policy at the prerequisite of packet loss allowance to avoid network congestion;on RAC layer the normal distribution-based network traffic model is established.By analysing the competition in the network,the bandwidth can be adjusted,which makes the transmission rate gradually converge to the average rate to achieve stable transmission.Through simulation experiment in a network environment,it has been verified that the CTP has good capability in congestion control and transmission stability.
出处
《计算机应用与软件》
CSCD
2011年第9期207-209,共3页
Computer Applications and Software
关键词
视频会议
拥塞控制
稳定性
公平竞争
正态分布
Video conferencing Congestion control Stability Fair competition Normal distribution
