A Resilient Transport Control Scheme for Metro Ethernet Services Based on Hypothesis Test
Chunpeng Xiao, Claudio I. Estevez, Georgios Ellinas, Gee‐Kung Chang · 2007
This paper aims to enhance the transport services of Ethernet MANs by detecting congestion more accurately and responding to packet losses more adaptively. Traditional TCP was designed for best-effort networks, and cannot utilize available bandwidth efficiently in a broadband link. Most of the previous research addressed this problem by modifying the additive increase multiplicative decrease (AIMD) algorithm of TCP. In this paper, a novel resilient transport control scheme is proposed for Ethernet services that utilize a less aggressive congestion window reduction algorithm when a non-congested environment is detected. A stochastic model for packet loss is proposed, in which packet losses are expressed as a random function of congestion and random loss present in the network Transport layer congestion control is stated as a hypothesis test process; making decisions based on multiple ACK feedbacks. The new method can keep false-alarm probability under control and therefore it increases throughput significantly.