Kanagarathinam, MR, Singh, S, Sandeep, I, Kim, H, Maheshwari, MK, Hwang, J, Roy, A and Saxena, N (2020) NexGen D-TCP: Next generation dynamic TCP congestion control algorithm. IEEE Access, 8. pp. 164482-164496. ISSN 2169-3536

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Abstract

With the advancement of wireless access networks and mmWave New Radio (NR), new applications emerged, which requires a high data rate. The random packet loss due to mobility and channel conditions in a wireless network is not negligible, which degrades the significant performance of the Transmission Control Protocol (TCP). The TCP has been extensively deployed for congestion control in the communication network during the last two decades. Different variants are proposed to improve the performance of TCP in various scenarios, specifically in lossy and high bandwidth-delay product (high- BDP) networks. Implementing a new TCP congestion control algorithm whose performance is applicable over a broad range of network conditions is still a challenge. In this article, we introduce and analyze a Dynamic TCP (D-TCP) congestion control algorithm overmmWave NR and LTE-A networks. The proposed D-TCP algorithm copes up with the mmWave channel fluctuations by estimating the available channel bandwidth. The estimated bandwidth is used to derive the congestion control factor N. The congestion window is increased/decreased adaptively based on the calculated congestion control factor. We evaluated the performance of D-TCP in terms of congestion window growth, goodput, fairness and compared it with legacy and existing TCP algorithms. We performed simulations of mmWave NR during LOS <-> NLOS transitions and showed that D-TCP curtails the impact of under-utilization during mobility. The simulation results and live air experiment points out that D-TCP achieves 32:9% gain in goodput as compared to TCPReno and attains 118:9% gain in throughput as compared to TCP-Cubic.

Item Type:	Article
Uncontrolled Keywords:	Bandwidth; 5G mobile communication; Heuristic algorithms; Throughput; Packet loss; Protocols; TCP; congestion control; bandwidth estimation; throughput; friendliness; fairness; 46 Information and Computing Sciences; 4606 Distributed Computing and Systems Software; 4006 Communications Engineering; 40 Engineering; 08 Information and Computing Sciences; 09 Engineering; 10 Technology; 40 Engineering; 46 Information and computing sciences
Subjects:	Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Divisions:	Computer Science and Mathematics
Publisher:	Institute of Electrical and Electronics Engineers (IEEE)
SWORD Depositor:	A Symplectic
Date Deposited:	25 Feb 2025 11:12
Last Modified:	25 Feb 2025 11:12
DOI or ID number:	10.1109/ACCESS.2020.3022284
URI:	https://researchonline.ljmu.ac.uk/id/eprint/25717

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