A TCP-Friendly Congestion Control Mechanism Implemented by Receivers
Yuheng Liu, Guangwen Chen, Sun Yat-sen · Dianzi xuebao · 2005
AbstrcatA new unicast rate-based TCP-Friendly protocol called RAAR (Rate Adaptation at Receivers) is proposed.RAAR is a rate adaptive algorithm at receivers.It applies GAIMD (General Additive Increase Multiplicative Decrease) policy for congestion control and doesn't need to feed back per packet received.In RAAR,almost all complex operations of traffic control are carried out at receivers.A simple mathematical model is constructed to analyze the throughput of RAAR and get the relationship of α and β in RAAR for AIMD(Additive Increase Multiplicative Decrease)TCP-Friendly congestion control.Comparing with two important TCP-Friendly protocols,TFRC and TEAR,results are that RAAR has better performance in TCP-Friendliness,intra-protocol fairness and smoothness.RAAR is also a promising avenue of development for congestion control of multicast traffic,since it is not a per-packet acknowledgement and is mainly implemented at receivers.