Full-Duplex MAC Protocol Based on CSMA/CA for Switching Transmission Mode

Full-duplex (FD) radios can transmit and receive packets simultaneously in the same frequency band. Although this potentially doubles the spectral efficiency, it also causes inter-node interference, which was not an issue for half-duplex (HD) radios and can significantly reduce FD radio throughput....

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Main Authors: Jin-Ki Kim, Won-Jae Lee, Jae-Hyun Kim
Format: Article
Language:English
Published: MDPI AG 2021-03-01
Series:Electronics
Subjects:
Online Access:https://www.mdpi.com/2079-9292/10/5/587
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author Jin-Ki Kim
Won-Jae Lee
Jae-Hyun Kim
author_facet Jin-Ki Kim
Won-Jae Lee
Jae-Hyun Kim
author_sort Jin-Ki Kim
collection DOAJ
description Full-duplex (FD) radios can transmit and receive packets simultaneously in the same frequency band. Although this potentially doubles the spectral efficiency, it also causes inter-node interference, which was not an issue for half-duplex (HD) radios and can significantly reduce FD radio throughput. This paper proposes a hybrid transmission switching algorithm to reduce performance degradation due to inter-node interference. In contrast to previous studies that only considered channel capacity, we determine the transmission mode by considering the modulation and coding scheme (MCS). The access point compares the required transmission time for HD, FD, and hybrid mode and selects the mode with the best network throughput. We also designed an analytical model to evaluate network throughput for the proposed algorithm. In particular, we consider FD pair probability, which has not been addressed previously. Analytical and simulation results verify that the proposed algorithm improves network performance.
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spelling doaj.art-515037a9c66b4728b08d90158b504fd12023-12-03T12:24:22ZengMDPI AGElectronics2079-92922021-03-0110558710.3390/electronics10050587Full-Duplex MAC Protocol Based on CSMA/CA for Switching Transmission ModeJin-Ki Kim0Won-Jae Lee1Jae-Hyun Kim2Department of Electrical and Computer Engineering, Ajou University, Suwon 16499, KoreaDepartment of Artificial Intelligence Convergence Network, Ajou University, Suwon 16499, KoreaDepartment of Electrical and Computer Engineering, Ajou University, Suwon 16499, KoreaFull-duplex (FD) radios can transmit and receive packets simultaneously in the same frequency band. Although this potentially doubles the spectral efficiency, it also causes inter-node interference, which was not an issue for half-duplex (HD) radios and can significantly reduce FD radio throughput. This paper proposes a hybrid transmission switching algorithm to reduce performance degradation due to inter-node interference. In contrast to previous studies that only considered channel capacity, we determine the transmission mode by considering the modulation and coding scheme (MCS). The access point compares the required transmission time for HD, FD, and hybrid mode and selects the mode with the best network throughput. We also designed an analytical model to evaluate network throughput for the proposed algorithm. In particular, we consider FD pair probability, which has not been addressed previously. Analytical and simulation results verify that the proposed algorithm improves network performance.https://www.mdpi.com/2079-9292/10/5/587hybrid transmissionWLANFD pair probabilityMCS region
spellingShingle Jin-Ki Kim
Won-Jae Lee
Jae-Hyun Kim
Full-Duplex MAC Protocol Based on CSMA/CA for Switching Transmission Mode
Electronics
hybrid transmission
WLAN
FD pair probability
MCS region
title Full-Duplex MAC Protocol Based on CSMA/CA for Switching Transmission Mode
title_full Full-Duplex MAC Protocol Based on CSMA/CA for Switching Transmission Mode
title_fullStr Full-Duplex MAC Protocol Based on CSMA/CA for Switching Transmission Mode
title_full_unstemmed Full-Duplex MAC Protocol Based on CSMA/CA for Switching Transmission Mode
title_short Full-Duplex MAC Protocol Based on CSMA/CA for Switching Transmission Mode
title_sort full duplex mac protocol based on csma ca for switching transmission mode
topic hybrid transmission
WLAN
FD pair probability
MCS region
url https://www.mdpi.com/2079-9292/10/5/587
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