TCP Throughput over Full-Duplex WLANs: Novel Implications of the AP's New Capability

Pai, VU and Mehta, NB and Singh, C (2024) TCP Throughput over Full-Duplex WLANs: Novel Implications of the AP's New Capability. In: 59th Annual IEEE International Conference on Communications, ICC 2024, 9 June 2024through 13 June 2024, Denver, pp. 1041-1046.

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Abstract

Full-duplex (FD) communication promises to double the throughput of wireless local area networks (WLANs) by allowing simultaneous transmission and reception of data. While the benefits of FD on the medium access control (MAC) layer throughput of IEEE 802.11 WLANs are well-studied, the interaction between the transmission control protocol (TCP) and the FD MAC layer is less explored. We consider TCP file uploads and downloads between stations (STAs) and a server via an FD access point (AP). Using a novel FD-specific saturation approximation, Markov renewal theory, and fixed point analysis, we derive novel expressions for the TCP upload and download saturation throughputs. These expressions differ from those derived in the literature for TCP over half-duplex (HD) WLANs, and bring out how the AP is no longer a bottleneck. Despite greater contention between STAs, cross-link interference between transmitting and receiving STAs, and asymmetric payloads due to the different sizes of TCP data packets and TCP acknowledgments, we find that an FD WLAN achieves a significantly higher TCP throughput than a conventional HD WLAN. © 2024 IEEE.

Item Type:	Conference Paper
Publication:	IEEE International Conference on Communications
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	The copyright for this article belongs to Institute of Electrical and Electronics Engineers Inc.
Keywords:	Digital television; Network layers; Transmission control protocol, Access points; Control protocols; File upload; Full duplex communication; Full-duplex; Half-duplex; Local areas; Medium access control layer; Simultaneous transmission; Transmission control, Markov processes
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	25 Sep 2024 10:31
Last Modified:	25 Sep 2024 10:31
URI:	http://eprints.iisc.ac.in/id/eprint/86294

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