4G Long Term Evolution (LTE) networks present new features of high capacities together with end-user mobility. These challenges have led to a gap in the understanding of the effectiveness of TCP congestion control algorithms in LTE networks with mobile users. To further understanding, we conduct a detailed measurement study comparing TCP CUBIC with Bottleneck Bandwidth and Round-trip propagation time (BBR) - a new congestion control alternative developed by Google - in a high-speed driving scenario over a tier-1 U.S. wireless carrier. Our results show CUBIC and BBR generally have similar throughputs, but BBR has significantly lower self-inflicted delays than CUBIC.

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See also:

• Mark Claypool, Feng Li and Jae Chung. BBR' - An Implementation of Bottleneck Bandwidth and Round-trip Time Congestion Control for ns-3, In Proceedings of the Workshop on ns-3 (WNS3), Mangalore, India, June 2018. Online at: http://www.cs.wpi.edu/~claypool/papers/bbr-prime/

• Saahil Claypool, Mark Claypool, Jae Chung, and Feng Li. Sharing but not Caring - Performance of TCP BBR and TCP CUBIC at the Network Bottleneck, In Proceedings of the 15th IARIA Advanced International Conference on Telecommunications (AICT), Nice, France, July 28 - August 2, 2019. Online at: http://www.cs.wpi.edu/~claypool/papers/bbr/