Joint Usage of Dynamic Sensitivity Control and Time Division Multiple Access in Dense 802.11ax Networks

Khorov, Evgeny; Kiryanov, Anton; Krotov, Alexander; Gallo, Pierluigi; Garlisi, Domenico; Tinnirello, Ilenia

doi:10.1007/978-3-319-51376-8_5

Cited by 6 publications

(5 citation statements)

References 16 publications

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“…are shown in figure 3. In this figure we can easily observe that packet sizes are mostly short, the number of packets per burst is mostly a few and burst inter-arrival time is mostly on the order of milliseconds [19]. For instance, traffic measurement on packet size reveals that packet size is \66 B with [75% chance for UL, and \1500 B with 40% chance for DL.…”

Section: Mu Aggregationmentioning

confidence: 95%

High-efficiency WLANs for dense deployment scenarios

Vijay

Malarkodi

2019

Sādhanā

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In this article, we review the latest technical attributes such as orthogonal frequency division multiple access (OFDMA), multiuser MIMO (MU-MIMO) and enhanced clear channel assessment (CCA) for better spatial reuse used in the 802.11ax amendment to the 802.11 standard that leads to PHY and MAC enhancements for high-density scenarios of access points (APs). IEEE 802.11ax, also referred to as highefficiency wireless local area network (WLAN) (HEW), provides mechanisms to thoroughly utilize the unlicensed spectrum bands (2.4 and 5 GHz) and strengthen the user experience. The functional requirements of HEW are stressed on interactive video transmission latency and access efficiency to meet quality of service (QoS) requirements. Finally, we investigate three configurations-MU-MIMO, OFDMA and combination of both or mixed mode-for 4-user AP transmission schemes in 802.11ax. The performance of the MU schemes varies with packet size and operating SNR. OFDMA is more efficient than MU-MIMO at low SNRs for all packet sizes, which means 5th percentile stations (STAs) can get desired throughput.

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Section: Mu Aggregationmentioning

confidence: 95%

High-efficiency WLANs for dense deployment scenarios

Vijay

Malarkodi

2019

Sādhanā

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“…This approach is evaluated in [68] and it has been proved to be effective. In [69], the DSC approach is combined with inter-BSS Fig. 11.…”

Section: Adjustment Of Sensitivity Threshold and Transmit Powermentioning

confidence: 99%

A Tutorial on IEEE 802.11ax High Efficiency WLANs

Khorov

Kiryanov

Lyakhov

et al. 2019

IEEE Commun. Surv. Tutorials

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428

231

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While celebrating the 21st year since the very first IEEE 802.11 "legacy" 2 Mbit/s wireless local area network standard, the latest Wi-Fi newborn is today reaching the finish line, topping the remarkable speed of 10 Gbit/s. IEEE 802.11ax was launched in May 2014 with the goal of enhancing throughput-perarea in high-density scenarios. The first 802.11ax draft versions, namely, D1.0 and D2.0, were released at the end of 2016 and 2017. Focusing on a more mature version D3.0, in this tutorial paper, we help the reader to smoothly enter into the several major 802.11ax breakthroughs, including a brand new orthogonal frequencydivision multiple access-based random access approach as well as novel spatial frequency reuse techniques. In addition, this tutorial will highlight selected significant improvements (including physical layer enhancements, multiuser multiple input multiple output extensions, power saving advances, and so on) which make this standard a very significant step forward with respect to its predecessor 802.11ac.

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“…The challenge here is to be able to identify which are the potential hidden and exposed nodes for each BSS, and find suitable schedules to avoid them. Although not considering TWT, a similar approach is developed in [14] where TDMA schedules and DSC adaptation are used to improve the throughput in dense WLAN deployments.…”

Section: Coordination Of Multiple Obsssmentioning

confidence: 99%

Target Wake Time: Scheduled Access in IEEE 802.11ax WLANs

Nurchis

Bellalta

2019

IEEE Wireless Commun.

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The increasing interest for ubiquitous networking, and the tremendous popularity gained by IEEE 802.11 Wireless Local Area Networks (WLANs) in recent years, is leading to very dense deployments where high levels of channel contention may prevent to meet the increasing users' demands. To mitigate the negative effects of channel contention, the Target Wake Time (TWT) mechanism included in the IEEE 802.11ax amendment can have a significant role, as it provides an extremely simple but effective mechanism to schedule transmissions in time. Moreover, in addition to reduce the contention between stations, the use of TWT may also contribute to take full advantage of other novel mechanisms in the IEEE 802.11 universe, such as multiuser transmissions, multi-AP cooperation, spatial reuse and coexistence in high-density WLAN scenarios. Overall, we believe TWT may be a first step towards a practical collision-free and deterministic access in future WLANs.1 It is expected that the IEEE 802.11ax amendment will be published in 2019.

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Joint Usage of Dynamic Sensitivity Control and Time Division Multiple Access in Dense 802.11ax Networks

Cited by 6 publications

References 16 publications

High-efficiency WLANs for dense deployment scenarios

High-efficiency WLANs for dense deployment scenarios

A Tutorial on IEEE 802.11ax High Efficiency WLANs

Target Wake Time: Scheduled Access in IEEE 802.11ax WLANs

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