COMPARISON OF TCP CONGESTION CONTROL ALGORITHMS IN NETWORKS WITH DELAY AND LOSS
Keywords:
TCP, congestion control, BBR, CUBIC, Vegas, Reno, satellite link, netemAbstract
This paper compares TCP Reno, CUBIC, BBR, and Vegas under controlled delay, jitter, and loss profiles, and separately evaluates BBRv1 and BBRv3 in a virtualized kernel testbed. The measurements use Linux tc netem, iperf3, and ping. The results show that BBR is a strong throughput-oriented baseline in satellite-like profiles, whereas Vegas better controls delay and retransmissions. BBRv3 reduced RTT in selected scenarios but had lower throughput than BBRv1. Additional repeats show that TCP measurements are sensitive to the runtime environment; therefore, kernel-version comparisons should be interpreted within the same controlled environment.
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