一种基于TCPW的流媒体端到端拥塞控制方法.pdfVIP

13 10 V o.l 13, N o. 10 2008 10 Journa l o f Im age and G raphics O c t. , 2008 TCPW 金崇奎 王 嘉 宋 利 , 200240 ) , 200240 ) , , D arw in stream ing server D SS) , TCP W eswt ood T CPW ) DSS, , , TCPW : TP301. 6 : A : 1006- 8961 2008) 10- 1959- 04 An End-to-end Congestion Control Strategy for Stream ingM edia Based on TCPW JI N Chong-ku ,i WAND Jia, SONG L i (Institute of Image Communication and InformationProcessing, ShanghaiJiaotong University, Shanghai 200240 ) (ShanghaiK ey Laboratory of D igital ediaProcessing and Transmissions, ShanghaiJiaotong University, Shanghai200240) Abstract D ue to tmi e-v ar iab le and he terogeneou s netw ork, stream ing m ed ia system a wl ay s can no t adapt to the ne wt o rk bandw idth w ell. B ased on ana lyz ing the stra tegy o f cong estion contro l of D arw in Stre am ing Serve r, u sing T CP W estw ood to e stim ate the bandw idth, an im prov ed cong estion contro l stra tegy is proposed in th is paper and v a lida ted in a rea-l tmi e v ideo transpo rt system. Exper mi enta l result show s tha t the mi proved strategy not only mi proves the v ideo quality in the rece iver, bu t a lso imp rov es the bandw id th utility. K eywords cong estion control, TCP W estw ood TCPW ) , rea-l tmi e video stream ing system, da rw in stream ing server TCP 1 ) [ 1]