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Based on the analysis of TCP performance of over the two ways of IEEE 802.11 DCF (RTS/CTS and CSMA/CA), TCP flows becomes unstable when WLAN is in high load. In this paper, we propose a novel backoff algorithm for IEEE 802.11 DCF named as ACWB (adaptive contention window backoff) with cross-layer optimization. Its basic idea is to dynamically adjust the size of the contention window by the estimation...
In the standard TCP congestion control mechanism such as TCP Reno, it may cause the issue that packet sending rate increase exponentially in the slow start phase so significantly that it leads to the decline of TCP performance due to the overflow of bottleneck link buffer. One of the ways of TCP modification is based on estimation of the fair share of the available bandwidth for each flow and adjustment...
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