Spatial Reuse in IEEE 802.11ax WLANs

Wilhelmi, Francesc; Barrachina‐Muñoz, Sergio; Cano, Cristina; Selinis, Ioannis; Bellalta, Boris

doi:10.1016/j.comcom.2021.01.028

Cited by 27 publications

(23 citation statements)

References 49 publications

(85 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To detect the overlapping basic service set (OBSS) co-channel interference, BSS coloring is defined in the PHY and MAC layers of IEEE 802.11ax to identify the frames with the same color as interference. This technique can be used for spatial reuse [34], [35].…”

Section: Ieee 80211 Mac Sublayermentioning

confidence: 99%

Medium access control protocol design for wireless communications and networks review

Jaber

Kadhim

Al-Araji

2022

IJECE

View full text Add to dashboard Cite

<p><span>Medium access control (MAC) protocol design plays a crucial role to increase the performance of wireless communications and networks. The channel access mechanism is provided by MAC layer to share the medium by multiple stations. Different types of wireless networks have different design requirements such as throughput, delay, power consumption, fairness, reliability, and network density, therefore, MAC protocol for these networks must satisfy their requirements. In this work, we proposed two multiplexing methods for modern wireless networks: Massive multiple-input-multiple-output (MIMO) and power domain non-orthogonal multiple access (PD-NOMA). The first research method namely Massive MIMO uses a massive number of antenna elements to improve both spectral efficiency and energy efficiency. On the other hand, the second research method (PD-NOMA) allows multiple non-orthogonal signals to share the same orthogonal resources by allocating different power level for each station. PD-NOMA has a better spectral efficiency over the orthogonal multiple access methods. A review of previous works regarding the MAC design for different wireless networks is classified based on different categories. The main contribution of this research work is to show the importance of the MAC design with added optimal functionalities to improve the spectral and energy efficiencies of the wireless networks.</span></p>

show abstract

Section: Ieee 80211 Mac Sublayermentioning

confidence: 99%

Medium access control protocol design for wireless communications and networks review

Jaber

Kadhim

Al-Araji

2022

IJECE

View full text Add to dashboard Cite

show abstract

“…In dense scenarios, overlapping of basic service set (BSS) coverage areas turns into large delays for STAs waiting to access the channel. IEEE 802.11ax partially addresses this issue by allowing concurrent transmissions under the spatial reuse scope, showing a clear gain for time-sensitive communication [ 16 ]. A gain that could be remarkably boosted by means of coordination mechanisms among neighboring APs.…”

Section: Limitations Of Ieee 80211 To Handle Time-sensitive Trafficmentioning

confidence: 99%

Time-Sensitive Networking in IEEE 802.11be: On the Way to Low-Latency WiFi 7

Adame

Carrascosa

Bellalta

2021

Sensors

Self Cite

View full text Add to dashboard Cite

A short time after the official launch of WiFi 6, IEEE 802.11 working groups along with the WiFi Alliance are already designing its successor in the wireless local area network (WLAN) ecosystem: WiFi 7. With the IEEE 802.11be amendment as one of its main constituent parts, future WiFi 7 aims to include time-sensitive networking (TSN) capabilities to support low latency and ultra-reliability in license-exempt spectrum bands, enabling many new Internet of Things scenarios. This article first introduces the key features of IEEE 802.11be, which are then used as the basis to discuss how TSN functionalities could be implemented in WiFi 7. Finally, the benefits and requirements of the most representative Internet of Things low-latency use cases for WiFi 7 are reviewed: multimedia, healthcare, industrial, and transport.

show abstract

“…The goal of efficient channel utilization is to maximize "spatial reuse", or number of parallel transmissions in a given area. IEEE 802.11ax, the most recent WLAN standard, incorporates a feature called BSS coloring [3], as well as two spatial reuse methods called OBSS/PD and PSR (Parameterized Spatial Reuse) [4]. Although these mechanisms can help increase spatial reuse and thus improve the overall performance in dense environment, they have their limitations as discussed in the next section.…”

Section: Introductionmentioning

confidence: 99%

Improving Spatial Reuse of Wireless LAN Uplink Using BSS Color and Proximity Information

Kim

2021

Applied Sciences

View full text Add to dashboard Cite

With the density of wireless networks increasing rapidly, one of the major goals in next-generation wireless LANs (Local Area Networks) is to support a very dense network with a large number of closely deployed APs (Access Points) and crowded users. However, the CSMA (Carrier-Sense Multiple Access)-based medium access control of current wireless network systems suffers from significantly degraded performance when the network becomes dense. Recent WLAN (Wireless Local Area Networks) standards include measures for increasing spatial reuse such as BSS (Basic Service Set) coloring, but the schemes based on BSS coloring such as OBSS/PD (Overlapping BSS/Preamble Detection) have limitations in improving spatial reuse. In this paper, we propose a spatial reuse method for uplink which can utilize BSS color and proximity information to improve the efficiency of carrier sensing and thus spatial reuse. Specifically, through the BSS color and the proximity information, a node receiving a preamble can figure out how far the receiver of the ongoing traffic is located. This information is used to determine whether the node should aggressively start transmitting or defer its transmission to protect the ongoing transmission. Simulation results show that the proposed method outperforms existing methods in terms of throughput and fairness.

show abstract

Spatial Reuse in IEEE 802.11ax WLANs

Cited by 27 publications

References 49 publications

Medium access control protocol design for wireless communications and networks review

Medium access control protocol design for wireless communications and networks review

Time-Sensitive Networking in IEEE 802.11be: On the Way to Low-Latency WiFi 7

Improving Spatial Reuse of Wireless LAN Uplink Using BSS Color and Proximity Information

Contact Info

Product

Resources

About