Acknowledgement-aware MPR MAC protocol for distributed WLANs: Design and analysis

Mukhopadhyay, Arpan; Mehta, Neelesh B.

doi:10.1109/glocom.2012.6503927

“…The nodes in the same cluster have the same backoff counter, so that when the backoff procedure is completed, the nodes in the same cluster simultaneously send UL data frames. Mukhopadhyay et al [82] propose that to solve the ACK delay problem in MU-MIMO transmission, the operation mode of the waiting ACK timeout timer is modified, i.e., the waiting ACK timeout timer only starts to work after the channel is idle for DCF inter-frame space Zheng et al [87] propose that multiple nodes still obey the CSMA/CA backoff procedure, and synchronously send RTS frames after the backoff procedure. After AP receives the RTS frames from multiple nodes, it sends the CTS frame to schedule the nodes perform parallel transmission.…”

Section: ) Mu-mimo Based Mu-macmentioning

confidence: 99%

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

Qu

¹

,

Li

²

,

Yang

³

et al. 2019

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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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“…Since Babich et al in [32] did not consider the ACK-delay problem, the authors in [55] propose to change the ACK-waiting STAs' backoff timer to be decreased only when the channel has been idle for DIFS. The simultaneous transmissions are assumed to be decodable by the AP, and a single data rate is also assumed.…”

Section: Survey Of Mu-mimo Mac Protocols For Wlansmentioning

confidence: 99%

MU-MIMO MAC Protocols for Wireless Local Area Networks: A Survey

Liao

¹

,

Bellalta

²

,

Oliver

³

et al. 2016

IEEE Commun. Surv. Tutorials

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As wireless devices boom, and bandwidth-hungry applications (e.g., video and cloud uploading) get popular, today's Wireless Local Area Networks (WLANs) become not only crowded but also stressed at throughput. Multi-user Multiple-Input and Multiple-Output (MU-MIMO), an advanced form of MIMO, has gained attention due to its huge potential in improving the performance of WLANs. This paper surveys random access based MAC protocols for MU-MIMO enabled WLANs. It first provides background information about the evolution and the fundamental MAC schemes of IEEE 802.11 Standards and Amendments, and then identifies the key requirements of designing MU-MIMO MAC protocols for WLANs. After that, the most representative MU-MIMO MAC proposals in the literature are overviewed by benchmarking their MAC procedures and examining the key components, such as the channel state information acquisition, de/pre-coding and scheduling schemes. Classifications and discussions on important findings of the surveyed MAC protocols are provided, based on which, the research challenges for designing effective MU-MIMO MAC protocols, as well as the envisaged MAC's role in the future heterogeneous networks, are highlighted.Comment: Accepted by IEEE Communications Surveys and Tutorials, 40 pages, 12 figure

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“…b) Asynchronous Data Transmissions: Mukhopadhyay et al in [55] explore the ACK-delay problem that arises in asynchronous MPR.…”

Section: Survey Of Mu-mimo Mac Protocols For Wlansmentioning

confidence: 99%

MU-MIMO MAC Protocols for Wireless Local Area Networks: A Survey

Liao,

Bellalta,

Oliver

et al. 2014

Preprint

0

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As wireless devices boom, and bandwidth-hungry applications (e.g., video and cloud uploading) get popular, today's Wireless Local Area Networks (WLANs) become not only crowded but also stressed at throughput. Multi-user Multiple-Input and Multiple-Output (MU-MIMO), an advanced form of MIMO, has gained attention due to its huge potential in improving the performance of WLANs. This paper surveys random access based MAC protocols for MU-MIMO enabled WLANs. It first provides background information about the evolution and the fundamental MAC schemes of IEEE 802.11 Standards and Amendments, and then identifies the key requirements of designing MU-MIMO MAC protocols for WLANs. After that, the most representative MU-MIMO MAC proposals in the literature are overviewed by benchmarking their MAC procedures and examining the key components, such as the channel state information acquisition, de/pre-coding and scheduling schemes. Classifications and discussions on important findings of the surveyed MAC protocols are provided, based on which, the research challenges for designing effective MU-MIMO MAC protocols, as well as the envisaged MAC's role in the future heterogeneous networks, are highlighted.

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Acknowledgement-aware MPR MAC protocol for distributed WLANs: Design and analysis

Cited by 12 publications

References 19 publications

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

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

MU-MIMO MAC Protocols for Wireless Local Area Networks: A Survey

MU-MIMO MAC Protocols for Wireless Local Area Networks: A Survey

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