A Congestion Aware Slow-Start Algorithm for TFRC Protocol
Jiang Ming · Dianzi xuebao · 2009
This paper analyzes the problem of TFRC(TCP-Friendly Rate Control) protocol in slow-start phase in which the sending rate increases exponentially like that in the TCP protocol,and proposes a method of using round trip time(RTT) to adjust the sending rate adaptively in this phase.The method can detect the network congestion degree by comparing the sample RTT with the average RTT and then adjust the aggressiveness of sending rate in slow-start phase.The simulation results indicate that with this method,TFRC reduces the packet loss rate before entering the congestion avoid phrase,and improves the throughput and smoothness property,thus meeting the requirements of multimedia stream more effectively.