Efficient Packet Transmission Request Scheme Using Inter-Node Cooperation in Full-Duplex Communications 


Vol. 49,  No. 4, pp. 537-546, Apr.  2024
10.7840/kics.2024.49.4.537


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  Abstract

In contrast to the rapidly increasing wireless communication traffic, the available frequency spectrum for wirless local area networks(WLANs) is significantly limited. Therefore, full-duplex radio technology that can increase the efficiency of the frequency spectrum is attracting attention. Full-duplex radio is a wireless technology that can transmit and receive signals simultaneously in the same frequency spectrum by eliminating self-interference signals that occur during transmission. However, because existing WLANs are designed based on half-duplex radio, they cannot utilize full-duplex radio. Therefore, to utilize full-duplex radio in WLANs, a new medium access control(MAC) protocol is required. Several full-duplex MAC protocols have been proposed, and many studies have adopted a scheduling-based operation. In scheduling-based MAC protocols, an access point(AP) assigns a slot to each node, and a node having data to transmit requests packet transmission through the assigned slot. The AP realizes which nodes have data to transmit and schedules their packet transmission, and the nodes transmit packets according to the scheduling. This allows efficient packet transmission without wasting channel time, such as collisions. However, as the number of nodes increases, the slot time to confirm a node's packet transmission request also increases proportionally. To solve this problem, we propose a scheme to halve the number of slots required to confirm packet transmission requests by exploiting inter-node cooperation. This paper describes the operation of the proposed scheme based on Janus, the most representative scheduling-based MAC protocol, and evaluates the performance of the proposed scheme through analytical models and simulations.

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[IEEE Style]

H. Ahn and H. Lee, "Efficient Packet Transmission Request Scheme Using Inter-Node Cooperation in Full-Duplex Communications," The Journal of Korean Institute of Communications and Information Sciences, vol. 49, no. 4, pp. 537-546, 2024. DOI: 10.7840/kics.2024.49.4.537.

[ACM Style]

Hyeongtae Ahn and Harim Lee. 2024. Efficient Packet Transmission Request Scheme Using Inter-Node Cooperation in Full-Duplex Communications. The Journal of Korean Institute of Communications and Information Sciences, 49, 4, (2024), 537-546. DOI: 10.7840/kics.2024.49.4.537.

[KICS Style]

Hyeongtae Ahn and Harim Lee, "Efficient Packet Transmission Request Scheme Using Inter-Node Cooperation in Full-Duplex Communications," The Journal of Korean Institute of Communications and Information Sciences, vol. 49, no. 4, pp. 537-546, 4. 2024. (https://doi.org/10.7840/kics.2024.49.4.537)
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pISSN : 1226 - 4717
eISSN : 2287 - 3880