Dealing with Sudden Bandwidth Changes in TCP

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Dealing with Sudden Bandwidth Changes in TCP
— In this paper, we propose a novel technique to deal with sudden bandwidth changes in TCP. In the current Internet, sudden bandwidth changes may occur due to vertical handovers between heterogeneous access networks or routing path changes. The current implementation of TCP is designed and optimized for stable networks, and does not adapt well upon sudden bandwidth changes. Consequently, it might suffer from packet losses in burst upon sudden decrements of bandwidth and under-utilization upon sudden increments of bandwidth. To resolve this problem, we propose to modify the current TCP algorithm to include a new phase, called Fast Adaptation (FA). The FA phase is triggered upon detecting sudden bandwidth changes, and a TCP sender in the FA phase attempts to recover lost packets quickly to avoid timeout upon sudden decrement of bandwidth. Upon sudden increment of bandwidth, it increases its window size drastically to realize full-utilization. Through extensive simulations and experimen...
Euiyul Ko, Donghyeok An, Ikjun Yeom
Added 30 May 2010
Updated 30 May 2010
Type Conference
Year 2008
Where ICC
Authors Euiyul Ko, Donghyeok An, Ikjun Yeom
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