OFDMA-based Hybrid Channel Access for IEEE 802.11ax WLAN

Jorden Lee, Der-Jiunn Deng, Kwang Cheng Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Recently, IEEE 802.11 started a task group, 802.11ax, to investigate and deliver next generation wireless local area network (WLAN) technologies for dense environments. In 802.11ax, orthogonal frequency-division multiple access (OFDMA) has been adopted as PHY layer protocol to support up-link multiple-users (MU) transmission. However, choosing multiuser PHY in WLAN creates a new challenge as the legacy random access protocol, carrier sense multiple access/collision avoidance (CSMA/CA), was designed for single-user PHY. Hence, designing a new random access protocol for 802.11ax medium access control (MAC) is desperately needed. In this paper, we firstly introduce 802.11ax MAC and its random access protocol. Theoretical limitation of system efficiency of 802.11ax random access protocol is also provided. Next, we discuss the most popular contention resolution algorithm proposed in the 802.11ax task group at present. Finally, we propose a pragmatic and efficient OFDMA-based hybrid channel access (OHCA) method for IEEE 802.11ax. To the best of our knowledge, this is the first paper that study the 802.11ax random access protocol and its system efficiency analysis. Simulations are conducted to evaluate the performance of the proposed scheme. The results show that the proposed scheme provide much better performance than the existing solution, offering low collision rate, short access delay, better fairness, and yet more efficient bandwidth usage.

Original languageEnglish
Title of host publication2018 14th International Wireless Communications and Mobile Computing Conference, IWCMC 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages188-193
Number of pages6
ISBN (Print)9781538620700
DOIs
Publication statusPublished - 2018 Aug 28
Event14th International Wireless Communications and Mobile Computing Conference, IWCMC 2018 - Limassol, Cyprus
Duration: 2018 Jun 252018 Jun 29

Publication series

Name2018 14th International Wireless Communications and Mobile Computing Conference, IWCMC 2018

Other

Other14th International Wireless Communications and Mobile Computing Conference, IWCMC 2018
CountryCyprus
CityLimassol
Period18-06-2518-06-29

Fingerprint

Wireless Local Area Network (WLAN)
Frequency division multiple access
Orthogonal Frequency Division multiple Access (OFDMA)
Wireless local area networks (WLAN)
Random Access
Network protocols
Medium Access Control
Medium access control
Lower Solution
Carrier sense multiple access
Collision Avoidance
IEEE 802.11
Multiple Access
Uplink
Collision avoidance
Contention
Fairness
Computer systems
Collision
Bandwidth

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Energy Engineering and Power Technology
  • Control and Optimization

Cite this

Lee, J., Deng, D-J., & Chen, K. C. (2018). OFDMA-based Hybrid Channel Access for IEEE 802.11ax WLAN. In 2018 14th International Wireless Communications and Mobile Computing Conference, IWCMC 2018 (pp. 188-193). [8450369] (2018 14th International Wireless Communications and Mobile Computing Conference, IWCMC 2018). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IWCMC.2018.8450369
Lee, Jorden ; Deng, Der-Jiunn ; Chen, Kwang Cheng. / OFDMA-based Hybrid Channel Access for IEEE 802.11ax WLAN. 2018 14th International Wireless Communications and Mobile Computing Conference, IWCMC 2018. Institute of Electrical and Electronics Engineers Inc., 2018. pp. 188-193 (2018 14th International Wireless Communications and Mobile Computing Conference, IWCMC 2018).
@inproceedings{5b93f128a1104e9ba427c669cc3a757e,
title = "OFDMA-based Hybrid Channel Access for IEEE 802.11ax WLAN",
abstract = "Recently, IEEE 802.11 started a task group, 802.11ax, to investigate and deliver next generation wireless local area network (WLAN) technologies for dense environments. In 802.11ax, orthogonal frequency-division multiple access (OFDMA) has been adopted as PHY layer protocol to support up-link multiple-users (MU) transmission. However, choosing multiuser PHY in WLAN creates a new challenge as the legacy random access protocol, carrier sense multiple access/collision avoidance (CSMA/CA), was designed for single-user PHY. Hence, designing a new random access protocol for 802.11ax medium access control (MAC) is desperately needed. In this paper, we firstly introduce 802.11ax MAC and its random access protocol. Theoretical limitation of system efficiency of 802.11ax random access protocol is also provided. Next, we discuss the most popular contention resolution algorithm proposed in the 802.11ax task group at present. Finally, we propose a pragmatic and efficient OFDMA-based hybrid channel access (OHCA) method for IEEE 802.11ax. To the best of our knowledge, this is the first paper that study the 802.11ax random access protocol and its system efficiency analysis. Simulations are conducted to evaluate the performance of the proposed scheme. The results show that the proposed scheme provide much better performance than the existing solution, offering low collision rate, short access delay, better fairness, and yet more efficient bandwidth usage.",
author = "Jorden Lee and Der-Jiunn Deng and Chen, {Kwang Cheng}",
year = "2018",
month = "8",
day = "28",
doi = "10.1109/IWCMC.2018.8450369",
language = "English",
isbn = "9781538620700",
series = "2018 14th International Wireless Communications and Mobile Computing Conference, IWCMC 2018",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "188--193",
booktitle = "2018 14th International Wireless Communications and Mobile Computing Conference, IWCMC 2018",
address = "United States",

}

Lee, J, Deng, D-J & Chen, KC 2018, OFDMA-based Hybrid Channel Access for IEEE 802.11ax WLAN. in 2018 14th International Wireless Communications and Mobile Computing Conference, IWCMC 2018., 8450369, 2018 14th International Wireless Communications and Mobile Computing Conference, IWCMC 2018, Institute of Electrical and Electronics Engineers Inc., pp. 188-193, 14th International Wireless Communications and Mobile Computing Conference, IWCMC 2018, Limassol, Cyprus, 18-06-25. https://doi.org/10.1109/IWCMC.2018.8450369

OFDMA-based Hybrid Channel Access for IEEE 802.11ax WLAN. / Lee, Jorden; Deng, Der-Jiunn; Chen, Kwang Cheng.

2018 14th International Wireless Communications and Mobile Computing Conference, IWCMC 2018. Institute of Electrical and Electronics Engineers Inc., 2018. p. 188-193 8450369 (2018 14th International Wireless Communications and Mobile Computing Conference, IWCMC 2018).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - OFDMA-based Hybrid Channel Access for IEEE 802.11ax WLAN

AU - Lee, Jorden

AU - Deng, Der-Jiunn

AU - Chen, Kwang Cheng

PY - 2018/8/28

Y1 - 2018/8/28

N2 - Recently, IEEE 802.11 started a task group, 802.11ax, to investigate and deliver next generation wireless local area network (WLAN) technologies for dense environments. In 802.11ax, orthogonal frequency-division multiple access (OFDMA) has been adopted as PHY layer protocol to support up-link multiple-users (MU) transmission. However, choosing multiuser PHY in WLAN creates a new challenge as the legacy random access protocol, carrier sense multiple access/collision avoidance (CSMA/CA), was designed for single-user PHY. Hence, designing a new random access protocol for 802.11ax medium access control (MAC) is desperately needed. In this paper, we firstly introduce 802.11ax MAC and its random access protocol. Theoretical limitation of system efficiency of 802.11ax random access protocol is also provided. Next, we discuss the most popular contention resolution algorithm proposed in the 802.11ax task group at present. Finally, we propose a pragmatic and efficient OFDMA-based hybrid channel access (OHCA) method for IEEE 802.11ax. To the best of our knowledge, this is the first paper that study the 802.11ax random access protocol and its system efficiency analysis. Simulations are conducted to evaluate the performance of the proposed scheme. The results show that the proposed scheme provide much better performance than the existing solution, offering low collision rate, short access delay, better fairness, and yet more efficient bandwidth usage.

AB - Recently, IEEE 802.11 started a task group, 802.11ax, to investigate and deliver next generation wireless local area network (WLAN) technologies for dense environments. In 802.11ax, orthogonal frequency-division multiple access (OFDMA) has been adopted as PHY layer protocol to support up-link multiple-users (MU) transmission. However, choosing multiuser PHY in WLAN creates a new challenge as the legacy random access protocol, carrier sense multiple access/collision avoidance (CSMA/CA), was designed for single-user PHY. Hence, designing a new random access protocol for 802.11ax medium access control (MAC) is desperately needed. In this paper, we firstly introduce 802.11ax MAC and its random access protocol. Theoretical limitation of system efficiency of 802.11ax random access protocol is also provided. Next, we discuss the most popular contention resolution algorithm proposed in the 802.11ax task group at present. Finally, we propose a pragmatic and efficient OFDMA-based hybrid channel access (OHCA) method for IEEE 802.11ax. To the best of our knowledge, this is the first paper that study the 802.11ax random access protocol and its system efficiency analysis. Simulations are conducted to evaluate the performance of the proposed scheme. The results show that the proposed scheme provide much better performance than the existing solution, offering low collision rate, short access delay, better fairness, and yet more efficient bandwidth usage.

UR - http://www.scopus.com/inward/record.url?scp=85053940975&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85053940975&partnerID=8YFLogxK

U2 - 10.1109/IWCMC.2018.8450369

DO - 10.1109/IWCMC.2018.8450369

M3 - Conference contribution

AN - SCOPUS:85053940975

SN - 9781538620700

T3 - 2018 14th International Wireless Communications and Mobile Computing Conference, IWCMC 2018

SP - 188

EP - 193

BT - 2018 14th International Wireless Communications and Mobile Computing Conference, IWCMC 2018

PB - Institute of Electrical and Electronics Engineers Inc.

ER -

Lee J, Deng D-J, Chen KC. OFDMA-based Hybrid Channel Access for IEEE 802.11ax WLAN. In 2018 14th International Wireless Communications and Mobile Computing Conference, IWCMC 2018. Institute of Electrical and Electronics Engineers Inc. 2018. p. 188-193. 8450369. (2018 14th International Wireless Communications and Mobile Computing Conference, IWCMC 2018). https://doi.org/10.1109/IWCMC.2018.8450369