Novel DCF-based multi-user MAC protocol and dynamic resource allocation for OFDMA WLAN systems

Takuya, Mishima; Miyamoto, Shingo; Sampei, Seiichi; Jiang, Wenjie

doi:10.1109/iccnc.2013.6504157

Cited by 20 publications

(5 citation statements)

References 7 publications

(5 reference statements)

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“…In [14], it is proposed that only AP could occupy the channel resource and shares the channel resources with other STAs in the transmission opportunity (TXOP). The detail of this protocol is illustrated in Fig.…”

Section: Ap Initiated Channel Access With Ofdmmentioning

confidence: 99%

Survey on OFDMA based MAC protocols for the next generation WLAN

Yan

et al. 2015

2015 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)

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The physical (PHY) layer peak rate of the wireless local area network (WLAN) has been almost exponentially improved over the past 15 years since 1999. However, it is proved that the throughput is very low comparing to the PHY peak rate, and the media access control (MAC) efficiency is very low in the current WLANs specification, especially in dense deployment scenarios. Therefore, to achieve high MAC efficiency the IEEE Standards Association Standards Board (IEEE-SA) approves IEEE 802.11ax in March 2014, to draw up a brand new amendment for the next generation WLAN. One of the promising technologies to improve MAC efficiency is Orthogonal Frequency Division Multiple Access (OFDMA). In this paper, we firstly investigate the existing OFDMA based MAC protocols in the literature. Then, a framework of OFDMA based MAC protocol for the next generation WLAN is proposed. Finally, all of the existing OFDMA based MAC protocols listed in this paper are compared according to the proposed design issues. To the best of our knowledge this paper is the first survey focusing on OFDMA based MAC protocols for the next generation WLAN.

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Section: Ap Initiated Channel Access With Ofdmmentioning

confidence: 99%

Survey on OFDMA based MAC protocols for the next generation WLAN

Yan

et al. 2015

2015 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)

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“…Mishima et al recently proposed a distributed coordination function (DCF)-based multi-user medium access control (MAC) protocol [12], in which the access point controls the medium access for different traffic categories based on their specific QoS requirements. While their proposed protocol promises better QoS support for those stations that have attained medium access, there is a great possibility for other contending stations of not being able to access the medium for longer periods which might lead to starvation.…”

Section: Background and Related Workmentioning

confidence: 99%

Enhanced quality of service support for triple play services in IEEE 802.11 WLANs

Javed

Baig

Maqbool

2015

J Wireless Com Network

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Wi-Fi or wireless local area networks (WLANs) are among the most popular wireless internet access technologies used. The major challenge faced by WLANs is the provision of quality of service (QoS) for real-time applications at high congestion periods. IEEE 802.11e draft presents the only comprehensive QoS infrastructure for WLANs which proposes enhanced distributed channel access (EDCA) that propounds the prioritization of medium access for different traffic classes. EDCA while making perceptible improvements for real-time applications neglects non-real-time applications by allocating their share of the bandwidth to the former in an inefficient manner. In our study, we have found that there are considerable design improvements possible for IEEE 802.11e-based QoS propositions. This paper proposes a novel medium access and transmission mechanism for IEEE 802.11 WLANs that is specifically designed to ensure QoS for triple play services. Based on our study regarding the traffic characteristics of triple play services, we propose a mechanism that adaptively uses the medium access and transmission parameters according to the traffic characteristics of the applications, for better utilization of the available bandwidth. The mechanism also proffers higher medium access priority to the access point as compared to the stations in order to cope with the issue of uplink/downlink traffic asymmetry. Simulation-based analysis of the proposed mechanism compares its performance with EDCA. The proposed mechanism offers promising results in terms of packet loss, packet delay and throughput, and thus ensures QoS for voice, video and data transfer applications.

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“…Kamoun et al[65] propose a MAC protocol that supports UL and DL OFDMA transmission. Mishima et al[66] propose that AP sends RTS frame to multiple nodes, the nodes reply CTS frames sequentially, and then AP respectively schedules OFDMA DL transmission and OFDMA UL transmission. Qu et al[67] introduce the full duplex technology into OFDMA MU access, and design a MAC protocol for MU full-duplex OFDMA, which can greatly improve throughput.Due to the simple process of centralized scheduling in AP, IEEE 802.11ax adopts OFDMA access based on centralized scheduling in AP.…”

mentioning

confidence: 99%

Survey and Performance Evaluation of the Upcoming Next Generation WLANs Standard - IEEE 802.11ax

Yang

et al. 2019

Mobile Netw Appl

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With the ever-increasing demand for wireless traffic and quality of serives (QoS), wireless local area networks (WLANs) have developed into one of the most dominant wireless networks that fully influence human life. As the most widely used WLANs standard, Institute of Electrical and Electronics Engineers (IEEE) 802.11 will release the upcoming next generation WLANs standard amendment: IEEE 802.11ax. This article comprehensively surveys and analyzes the application scenarios, technical requirements, standardization process, key technologies, and performance evaluations of IEEE 802.11ax. Starting from the technical objectives and requirements of IEEE 802.11ax, this article pays special attention to high-dense deployment scenarios. After that, the key technologies of IEEE 802.11ax, including the physical layer (PHY) enhancements, multi-user (MU) medium access control (MU-MAC), spatial reuse (SR), and power efficiency are discussed in detail, covering both standardization technologies as well as the latest academic studies. Furthermore, performance requirements of IEEE 802.11ax are evaluated via a newly proposed systems and link-level integrated simulation platform (SLISP). Simulations results confirm that IEEE 802.11ax significantly improves the user experience in high-density deployment, while successfully achieves the average per user throughput requirement in project authorization request (PAR) by four times compared to the legacy IEEE 802.11. Finally, potential advancement beyond IEEE 802.11ax are discussed to complete this holistic study on the latest IEEE 802.11ax. To the best of our knowledge, this article is the first study to directly investigate and analyze the latest stable version of IEEE 802.11ax, and the first work to thoroughly and deeply evaluate the compliance of the performance requirements of IEEE 802.11ax.

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Novel DCF-based multi-user MAC protocol and dynamic resource allocation for OFDMA WLAN systems

Cited by 20 publications

References 7 publications

Survey on OFDMA based MAC protocols for the next generation WLAN

Survey on OFDMA based MAC protocols for the next generation WLAN

Enhanced quality of service support for triple play services in IEEE 802.11 WLANs

Survey and Performance Evaluation of the Upcoming Next Generation WLANs Standard - IEEE 802.11ax

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