An Improved TCP Congestion Control Algorithm of Based on Bandwidth Estimation in Heterogeneous Networks

Provided by: Journal of Communications
Topic: Enterprise Software
Format: PDF
Due to the difficulty in discriminating the wireless loss from congestion loss in heterogeneous networks, TCP Westwood cannot accurately estimate the available bandwidth and cause low network utilization. In this paper, the authors propose an improved congestion control algorithm called TCP NewBR, which adaptively estimates bandwidth by using the bottleneck link utilization and selects more precise time interval of ACK to improve the accuracy of available bandwidth estimation. In addition, they also modify the faster recovery and faster retransmission algorithms according to the queue length of bottleneck link.

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