A Novel Backoff Scheme and Its Throughput Analysis for Full Duplex MAC Protocols in Wireless LANs

Shota SAKAKURA; Chikara FUJIMURA; Kosuke SANADA; Hiroyuki HATANO; Kazuo MORI

doi:10.1587/transcom.2019EBP3152

IEICE TRANSACTIONS on Communications

A Novel Backoff Scheme and Its Throughput Analysis for Full Duplex MAC Protocols in Wireless LANs

Shota SAKAKURA, Chikara FUJIMURA, Kosuke SANADA, Hiroyuki HATANO, Kazuo MORI

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Wireless full duplex (FD) communication can double the point-to-point throughput. To fully realize the benefits of the FD technique in wireless local area networks (WLANs), it is important to design the medium access control (MAC) protocols for FD communications. In FD MAC protocols, when a node wins the channel contention and transmits a primary transmission, its destination node can start a secondary transmission triggered by the primary transmission. Each secondary transmitter transmits a data frame even if its backoff timer is not zero. However, the backoff scheme in the FD MAC protocols follows the conventional scheme based on the distributed coordination function (DCF). Therefore, the nodes with FD MAC initialize the contention window (CW) size to minimum CW (CW_min) after their successful secondary transmissions. Therefore, CW initialization in the FD MAC causes further collisions at stations (STAs), which degrades network throughput. This paper proposes a novel backoff scheme for FD MAC protocols. In the proposed scheme, the CW size and backoff timer are not initialized but kept the current value after secondary transmissions. The proposed scheme can mitigate frame collisions at STAs and increase FD-transmission opportunity in the network, and then enhance the throughput significantly. This paper presents comprehensive performance evaluation in simulations, including non-saturation and saturation conditions, and co-existence conditions with legacy half duplex (HD) STAs. For performance analysis, this paper establishes Markov-chain models for the proposed scheme. The analytical results show theoretically that the operation of the proposed scheme enhances network throughput. The simulation results and analytical results show the effectiveness of the proposed scheme.

Publication: IEICE TRANSACTIONS on Communications Vol.E103-B No.9 pp.989-1001

Publication Date: 2020/09/01

Publicized: 2020/03/03

Online ISSN: 1745-1345

DOI: 10.1587/transcom.2019EBP3152

Type of Manuscript: PAPER

Category: Wireless Communication Technologies

Authors

Shota SAKAKURA
  Mie University
Chikara FUJIMURA
  Mie University
Kosuke SANADA
  Mie University
Hiroyuki HATANO
  Mie University
Kazuo MORI
  Mie University

Keyword

wireless full duplex, MAC protocol, backoff, wireless local area networks, throughput analysis, Markov-chain

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Shota SAKAKURA, Chikara FUJIMURA, Kosuke SANADA, Hiroyuki HATANO, Kazuo MORI, "A Novel Backoff Scheme and Its Throughput Analysis for Full Duplex MAC Protocols in Wireless LANs" in IEICE TRANSACTIONS on Communications, vol. E103-B, no. 9, pp. 989-1001, September 2020, doi: 10.1587/transcom.2019EBP3152.
Abstract: Wireless full duplex (FD) communication can double the point-to-point throughput. To fully realize the benefits of the FD technique in wireless local area networks (WLANs), it is important to design the medium access control (MAC) protocols for FD communications. In FD MAC protocols, when a node wins the channel contention and transmits a primary transmission, its destination node can start a secondary transmission triggered by the primary transmission. Each secondary transmitter transmits a data frame even if its backoff timer is not zero. However, the backoff scheme in the FD MAC protocols follows the conventional scheme based on the distributed coordination function (DCF). Therefore, the nodes with FD MAC initialize the contention window (CW) size to minimum CW (CW_min) after their successful secondary transmissions. Therefore, CW initialization in the FD MAC causes further collisions at stations (STAs), which degrades network throughput. This paper proposes a novel backoff scheme for FD MAC protocols. In the proposed scheme, the CW size and backoff timer are not initialized but kept the current value after secondary transmissions. The proposed scheme can mitigate frame collisions at STAs and increase FD-transmission opportunity in the network, and then enhance the throughput significantly. This paper presents comprehensive performance evaluation in simulations, including non-saturation and saturation conditions, and co-existence conditions with legacy half duplex (HD) STAs. For performance analysis, this paper establishes Markov-chain models for the proposed scheme. The analytical results show theoretically that the operation of the proposed scheme enhances network throughput. The simulation results and analytical results show the effectiveness of the proposed scheme.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2019EBP3152/_p

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@ARTICLE{e103-b_9_989,
author={Shota SAKAKURA, Chikara FUJIMURA, Kosuke SANADA, Hiroyuki HATANO, Kazuo MORI, },
journal={IEICE TRANSACTIONS on Communications},
title={A Novel Backoff Scheme and Its Throughput Analysis for Full Duplex MAC Protocols in Wireless LANs},
year={2020},
volume={E103-B},
number={9},
pages={989-1001},
abstract={Wireless full duplex (FD) communication can double the point-to-point throughput. To fully realize the benefits of the FD technique in wireless local area networks (WLANs), it is important to design the medium access control (MAC) protocols for FD communications. In FD MAC protocols, when a node wins the channel contention and transmits a primary transmission, its destination node can start a secondary transmission triggered by the primary transmission. Each secondary transmitter transmits a data frame even if its backoff timer is not zero. However, the backoff scheme in the FD MAC protocols follows the conventional scheme based on the distributed coordination function (DCF). Therefore, the nodes with FD MAC initialize the contention window (CW) size to minimum CW (CW_min) after their successful secondary transmissions. Therefore, CW initialization in the FD MAC causes further collisions at stations (STAs), which degrades network throughput. This paper proposes a novel backoff scheme for FD MAC protocols. In the proposed scheme, the CW size and backoff timer are not initialized but kept the current value after secondary transmissions. The proposed scheme can mitigate frame collisions at STAs and increase FD-transmission opportunity in the network, and then enhance the throughput significantly. This paper presents comprehensive performance evaluation in simulations, including non-saturation and saturation conditions, and co-existence conditions with legacy half duplex (HD) STAs. For performance analysis, this paper establishes Markov-chain models for the proposed scheme. The analytical results show theoretically that the operation of the proposed scheme enhances network throughput. The simulation results and analytical results show the effectiveness of the proposed scheme.},
keywords={},
doi={10.1587/transcom.2019EBP3152},
ISSN={1745-1345},
month={September},}

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TY - JOUR
TI - A Novel Backoff Scheme and Its Throughput Analysis for Full Duplex MAC Protocols in Wireless LANs
T2 - IEICE TRANSACTIONS on Communications
SP - 989
EP - 1001
AU - Shota SAKAKURA
AU - Chikara FUJIMURA
AU - Kosuke SANADA
AU - Hiroyuki HATANO
AU - Kazuo MORI
PY - 2020
DO - 10.1587/transcom.2019EBP3152
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E103-B
IS - 9
JA - IEICE TRANSACTIONS on Communications
Y1 - September 2020
AB - Wireless full duplex (FD) communication can double the point-to-point throughput. To fully realize the benefits of the FD technique in wireless local area networks (WLANs), it is important to design the medium access control (MAC) protocols for FD communications. In FD MAC protocols, when a node wins the channel contention and transmits a primary transmission, its destination node can start a secondary transmission triggered by the primary transmission. Each secondary transmitter transmits a data frame even if its backoff timer is not zero. However, the backoff scheme in the FD MAC protocols follows the conventional scheme based on the distributed coordination function (DCF). Therefore, the nodes with FD MAC initialize the contention window (CW) size to minimum CW (CW_min) after their successful secondary transmissions. Therefore, CW initialization in the FD MAC causes further collisions at stations (STAs), which degrades network throughput. This paper proposes a novel backoff scheme for FD MAC protocols. In the proposed scheme, the CW size and backoff timer are not initialized but kept the current value after secondary transmissions. The proposed scheme can mitigate frame collisions at STAs and increase FD-transmission opportunity in the network, and then enhance the throughput significantly. This paper presents comprehensive performance evaluation in simulations, including non-saturation and saturation conditions, and co-existence conditions with legacy half duplex (HD) STAs. For performance analysis, this paper establishes Markov-chain models for the proposed scheme. The analytical results show theoretically that the operation of the proposed scheme enhances network throughput. The simulation results and analytical results show the effectiveness of the proposed scheme.
ER -

IEICE TRANSACTIONS on Communications