Evaluation of the DSC algorithm and the BSS color scheme in dense cellular-like IEEE 802.11ax deployments

Selinis, Ioannis; Filo, Marcin; Vahid, Seiamak; Rodrı́guez, Jonathan; Tafazolli, Rahim

doi:10.1109/pimrc.2016.7794832

Cited by 29 publications

(23 citation statements)

References 10 publications

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“…• Spatial reuse improvement: Spatial reuse is a key aspect in future high-density WLANs in order to improve the area throughput [12,13]. By reducing the uncertainty with respect to the number of stations in a given area that may transmit in a given period of time, techniques to improve the spatial reuse by adapting the transmit power, tuning the Clear Channel Assessment (CCA) threshold, and selecting the channel to operate can be further improved.…”

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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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 main drawbacks of DSC are that transmission opportunity for celledge users further decays due to the extended carrier sensing range [8] and the increased probability of a false alarm [1]. DSC has been extensively studied in residential [18], small indoor [19,20], and outdoor scenarios [23].…”

Section: Spatial Reuse In Ieee 80211axmentioning

confidence: 99%

Damysus: A Practical IEEE 802.11ax BSS Color Aware Rate Control Algorithm

Selinis

Κατσαρός

Vahid

et al. 2019

Int J Wireless Inf Networks

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Institute of Electrical and Electronics Engineers (IEEE) 802.11ax Spatial Reuse (SR) is a new feature in the IEEE 802.11 family, aiming at improving the spectrum efficiency and the network performance in dense deployments. The main and perhaps the only SR technique in that amendment is the Basic Service Set (BSS) Color. It aims at increasing the number of concurrent transmissions in a specific area, based on a newly defined Overlapping BSS/Preamble-Detection threshold. In this paper, we overview the latest developments introduced in the IEEE 802.11ax for the SR and propose a rate control algorithm developed to exploit the BSS Color scheme. Our proposed algorithm, Damysus is specifically designed to function in dense environments where other off-the-shelf algorithms show poor performance. Simulation results in various dense scenarios, show a clear performance improvement of up to 113% gain in throughput over the well known MinstrelHT algorithm.

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“…e first one is "802.11 DCF," which is the original DCF protocol. e second protocol is the dynamic sensitivity control protocol [13] proposed for IEEE 802.11ax standard. e protocol dynamically adjusts the carrier sense threshold based on the RSSI between AP and the mobile station.…”

Section: Simulation Setup Performance Evaluation Of G-dcfmentioning

confidence: 99%

“…When the privileged node overhears the header, it can begin transmission immediately. A dynamic sensitivity control (DSC) algorithm [13] was proposed to be incorporated into IEEE 802.11ax, where nodes independently and dynamically select CST based on the received signal strength index (RSSI) between the sender and the receiver. e main idea of DSC is that a mobile station located close to its access point (AP) can use a high CST because it can tolerate high interference at the receiver.…”

mentioning

confidence: 99%

G-DCF: Improving System Spectral Efficiency through Concurrent Transmissions in Wireless LANs

Eliab

Kim

Lee

et al. 2019

Wireless Communications and Mobile Computing

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This paper presents G-DCF, a MAC protocol for wireless LANs that can improve system spectral efficiency of wireless LANs by allowing more concurrent transmissions. The 802.11 DCF creates exposed terminals which are nodes that can transmit successfully but are blocked by carrier sensing. More potential exposed terminals are created when APs are densely placed, limiting spatial reuse of channels and thus system throughput. In order to allow concurrent transmissions from exposed terminals, G-DCF establishes groups in the network. Members of a group are nodes located within the carrier sense range of each other but can transmit packets concurrently. Whenever one member of a group wins the channel and transmits its packet, other nodes in the group also start transmission, triggered by the group ID included in the preamble. Contention window is adjusted according to the group size for fair share of the channel. Performance evaluations show that G-DCF can significantly improve system throughput and fairness over 802.11 DCF, especially when the APs are densely deployed.

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Evaluation of the DSC algorithm and the BSS color scheme in dense cellular-like IEEE 802.11ax deployments

Cited by 29 publications

References 10 publications

Target Wake Time: Scheduled Access in IEEE 802.11ax WLANs

Target Wake Time: Scheduled Access in IEEE 802.11ax WLANs

Damysus: A Practical IEEE 802.11ax BSS Color Aware Rate Control Algorithm

G-DCF: Improving System Spectral Efficiency through Concurrent Transmissions in Wireless LANs

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