DRAIN Asynchronization for Cyclic Throughput Fluctuation of CUBIC TCP and TCP BBR

The throughputs obtained by CUBIC TCP and TCP BBR periodically fluctuate if they communicate sharing the bottleneck link. This fluctuation severely declines the user experience of network-connected consumer electronics devices. In this paper, we discuss the relationship between the window size of measuring minimum RTT of TCP BBR and the strength of fluctuation. We then show that this fluctuation was relieved by randomizing this window size.