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A BBR-based congestion control for delay-sensitive real-time applications

Lookup NU author(s): Professor Raj Ranjan

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Abstract

© 2020, Springer-Verlag GmbH Austria, part of Springer Nature. The current User Datagram Protocol (UDP) causes unfairness and bufferbloats to delay sensitive applications due to the uncontrolled congestion and monopolization of available bandwidth.This causes call drops and frequent communication/connection loss in delay sensitive applications such as VoIP. We present a Responsive Control Protocol using Bottleneck Bandwidth and Round trip propagation time (RCP-BBR) as an alternate solution to UDP. RCP-BBR achieves low latency, high throughput, and low call drops ratio by efficiently customizing Transmission Control Protocol (TCP) Bottleneck Bandwidth and Round-trip propagation time (TCP-BBR) congestion control. We conducted comprehensive experiments, and the results show that proposed protocol achieves better throughput over UDP in stable networks. Moreover, in unstable and long-distanced networks, RCP-BBR achieved smaller queues in deep buffers and lower delays as compared to UDP, which performed poorly by keeping delays above the call drop threshold.

Publication metadata

Author(s): Najmuddin S, Asim M, Munir K, Baker T, Guo Z, Ranjan R

Publication type: Article

Publication status: Published

Journal: Computing

Year: 2020

Volume: 102

Pages: 2541-2563

Print publication date: 01/12/2020

Online publication date: 06/07/2020

Acceptance date: 22/06/2020

ISSN (print): 0010-485X

ISSN (electronic): 1436-5057

Publisher: Springer Nature

URL: https://doi.org/10.1007/s00607-020-00829-2

DOI: 10.1007/s00607-020-00829-2

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