Improvement on Congestion Control Mechanism of TCP Vegas
Jing Liu · Jisuanji gongcheng · 2006
To overcome the implementing limitation of Vegas,an improved Vegas is proposed.First,it calculates actual RTT and smallest RTT(base_rtt) based on grouping segments by size.While updating congestion window size and setting retransmission timer,the improved Vegas employs the RTT and base_rtt measured for segments belong to the same group.By these step,the improved Vegas can eliminate the negativity of segments size to window size and retransmit timer value in some degree and improve throughput more.Simulating results show that the improved Vegas can improve throughput up to 24% compared to TCP Vegas.