Experimental evaluation of opportunistic access in shared contention-based channels

Nada Elgaml; Heba Raafat; Aya Halim; Aya Abdeldayem; Nourhan Mahmoud; Ahmed Khattab; Ahmed H. Zahran

doi:10.1109/ICECS.2015.7440298

Experimental evaluation of opportunistic access in shared contention-based channels

Nada Elgaml
, Heba Raafat
, Aya Halim
, Aya Abdeldayem
, Nourhan Mahmoud
, Ahmed Khattab
, Ahmed H. Zahran

Cairo University

Research output: Chapter in Book/Report/Conference proceedings › Chapter › peer-review

Abstract

In this paper, we experimentally evaluate the gains of applying the concept of opportunistic channel access to the traditional contention-based access widely used in unlicensed channels. We consider the scenario in which multiple IEEE 802.11 networks coexist in a given channel and pose the following question: should all networks fairly compete for channel access or should they be prioritized in terms of channel access rights, and use opportunistic access to regulate their transmission? We implement a simple modification to the IEEE 802.11 medium access module of the wireless interface driver to allow opportunistic access of the shared channel. Then, we configure a secondary IEEE 802.11 network to opportunistically access the channel only when a primary network is not using it. Our empirical results show that such opportunistic channel access achieves high channel utilization (up to 188 % utilization gain) while respecting the prioritized access rights of the primary network with primary network outages below 7 %. In contrast, legacy contention-based access achieves higher channel utilization. However, it does not provide prioritized access and causes half the primary network packets to be denied transmission, which is not suitable for the targeted application scenarios.

Original language	English
Title of host publication	2015 IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	260-263
Number of pages	4
ISBN (Electronic)	9781509002467
DOIs	https://doi.org/10.1109/ICECS.2015.7440298
Publication status	Published - 23 Mar 2016
Externally published	Yes
Event	IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2015 - Cairo, Egypt Duration: 6 Dec 2015 → 9 Dec 2015

Publication series

Name	Proceedings of the IEEE International Conference on Electronics, Circuits, and Systems
Volume	2016-March

Conference

Conference	IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2015
Country/Territory	Egypt
City	Cairo
Period	6/12/15 → 9/12/15

Keywords

Ath9k
Experimental Evaluation
IEEE 802.11
Opportunistic Spectrum Access

Access to Document

10.1109/ICECS.2015.7440298

Cite this

Elgaml, N., Raafat, H., Halim, A., Abdeldayem, A., Mahmoud, N., Khattab, A., & Zahran, A. H. (2016). Experimental evaluation of opportunistic access in shared contention-based channels. In 2015 IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2015 (pp. 260-263). Article 7440298 (Proceedings of the IEEE International Conference on Electronics, Circuits, and Systems; Vol. 2016-March). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICECS.2015.7440298

Elgaml, Nada ; Raafat, Heba ; Halim, Aya et al. / Experimental evaluation of opportunistic access in shared contention-based channels. 2015 IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2015. Institute of Electrical and Electronics Engineers Inc., 2016. pp. 260-263 (Proceedings of the IEEE International Conference on Electronics, Circuits, and Systems).

@inbook{d86a65cd7a4b4adfaf06540bddfe9ecc,

title = "Experimental evaluation of opportunistic access in shared contention-based channels",

abstract = "In this paper, we experimentally evaluate the gains of applying the concept of opportunistic channel access to the traditional contention-based access widely used in unlicensed channels. We consider the scenario in which multiple IEEE 802.11 networks coexist in a given channel and pose the following question: should all networks fairly compete for channel access or should they be prioritized in terms of channel access rights, and use opportunistic access to regulate their transmission? We implement a simple modification to the IEEE 802.11 medium access module of the wireless interface driver to allow opportunistic access of the shared channel. Then, we configure a secondary IEEE 802.11 network to opportunistically access the channel only when a primary network is not using it. Our empirical results show that such opportunistic channel access achieves high channel utilization (up to 188 \% utilization gain) while respecting the prioritized access rights of the primary network with primary network outages below 7 \%. In contrast, legacy contention-based access achieves higher channel utilization. However, it does not provide prioritized access and causes half the primary network packets to be denied transmission, which is not suitable for the targeted application scenarios.",

keywords = "Ath9k, Experimental Evaluation, IEEE 802.11, Opportunistic Spectrum Access",

author = "Nada Elgaml and Heba Raafat and Aya Halim and Aya Abdeldayem and Nourhan Mahmoud and Ahmed Khattab and Zahran, \{Ahmed H.\}",

note = "Publisher Copyright: {\textcopyright} 2015 IEEE.; IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2015 ; Conference date: 06-12-2015 Through 09-12-2015",

year = "2016",

month = mar,

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doi = "10.1109/ICECS.2015.7440298",

language = "English",

series = "Proceedings of the IEEE International Conference on Electronics, Circuits, and Systems",

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Elgaml, N, Raafat, H, Halim, A, Abdeldayem, A, Mahmoud, N, Khattab, A & Zahran, AH 2016, Experimental evaluation of opportunistic access in shared contention-based channels. in 2015 IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2015., 7440298, Proceedings of the IEEE International Conference on Electronics, Circuits, and Systems, vol. 2016-March, Institute of Electrical and Electronics Engineers Inc., pp. 260-263, IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2015, Cairo, Egypt, 6/12/15. https://doi.org/10.1109/ICECS.2015.7440298

Experimental evaluation of opportunistic access in shared contention-based channels. / Elgaml, Nada; Raafat, Heba; Halim, Aya et al.
2015 IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2015. Institute of Electrical and Electronics Engineers Inc., 2016. p. 260-263 7440298 (Proceedings of the IEEE International Conference on Electronics, Circuits, and Systems; Vol. 2016-March).

Research output: Chapter in Book/Report/Conference proceedings › Chapter › peer-review

TY - CHAP

T1 - Experimental evaluation of opportunistic access in shared contention-based channels

AU - Elgaml, Nada

AU - Raafat, Heba

AU - Halim, Aya

AU - Abdeldayem, Aya

AU - Mahmoud, Nourhan

AU - Khattab, Ahmed

AU - Zahran, Ahmed H.

PY - 2016/3/23

Y1 - 2016/3/23

N2 - In this paper, we experimentally evaluate the gains of applying the concept of opportunistic channel access to the traditional contention-based access widely used in unlicensed channels. We consider the scenario in which multiple IEEE 802.11 networks coexist in a given channel and pose the following question: should all networks fairly compete for channel access or should they be prioritized in terms of channel access rights, and use opportunistic access to regulate their transmission? We implement a simple modification to the IEEE 802.11 medium access module of the wireless interface driver to allow opportunistic access of the shared channel. Then, we configure a secondary IEEE 802.11 network to opportunistically access the channel only when a primary network is not using it. Our empirical results show that such opportunistic channel access achieves high channel utilization (up to 188 % utilization gain) while respecting the prioritized access rights of the primary network with primary network outages below 7 %. In contrast, legacy contention-based access achieves higher channel utilization. However, it does not provide prioritized access and causes half the primary network packets to be denied transmission, which is not suitable for the targeted application scenarios.

AB - In this paper, we experimentally evaluate the gains of applying the concept of opportunistic channel access to the traditional contention-based access widely used in unlicensed channels. We consider the scenario in which multiple IEEE 802.11 networks coexist in a given channel and pose the following question: should all networks fairly compete for channel access or should they be prioritized in terms of channel access rights, and use opportunistic access to regulate their transmission? We implement a simple modification to the IEEE 802.11 medium access module of the wireless interface driver to allow opportunistic access of the shared channel. Then, we configure a secondary IEEE 802.11 network to opportunistically access the channel only when a primary network is not using it. Our empirical results show that such opportunistic channel access achieves high channel utilization (up to 188 % utilization gain) while respecting the prioritized access rights of the primary network with primary network outages below 7 %. In contrast, legacy contention-based access achieves higher channel utilization. However, it does not provide prioritized access and causes half the primary network packets to be denied transmission, which is not suitable for the targeted application scenarios.

KW - Ath9k

KW - Experimental Evaluation

KW - IEEE 802.11

KW - Opportunistic Spectrum Access

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DO - 10.1109/ICECS.2015.7440298

M3 - Chapter

AN - SCOPUS:84964849335

T3 - Proceedings of the IEEE International Conference on Electronics, Circuits, and Systems

SP - 260

EP - 263

BT - 2015 IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2015

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2015

Y2 - 6 December 2015 through 9 December 2015

ER -

Elgaml N, Raafat H, Halim A, Abdeldayem A, Mahmoud N, Khattab A et al. Experimental evaluation of opportunistic access in shared contention-based channels. In 2015 IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2015. Institute of Electrical and Electronics Engineers Inc. 2016. p. 260-263. 7440298. (Proceedings of the IEEE International Conference on Electronics, Circuits, and Systems). doi: 10.1109/ICECS.2015.7440298

Experimental evaluation of opportunistic access in shared contention-based channels

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