Improving Performance of Rate-Based Transport Protocols in Wireless Environments
msra(2003)
摘要
Wireless links present higher loss rate than current wired links due to the inherent characteristi cs of wireless transmission. Lossy environments break the fundamental assumption of current transport protocols t hat a loss indicates congestion, which results in a reductio n in throughput. To avoid changes to the infrastructure, we p ropose an end-to-end approach to loss discrimination based on n etwork state estimation at the receiver. Discrimination is achi eved by correlating the short-term jitter history with anomalou s jitter and loss. Through simulation, an experimental rate-based protocol using the discrimination heuristic is compare d to a stock TCP and a TCP modified to deal with wireless los ses. Our experimental results validate the heuristics and show th at better performance can be achieved.
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关键词
rate-based transport protocols.,index terms —wireless,congestion control
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