Dynamic Channel Bandwidth Use through Efficient Channel Assignment in IEEE 802.11ac Networks

Zakrzewska, Anna; Ho, Lester

doi:10.1109/vtcfall.2019.8891243

Cited by 12 publications

(6 citation statements)

References 8 publications

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“…As well, different channel bonding policies were introduced and modeled for spatially distributed scenarios [32], [31]. Lastly, primary channel selection was studied in [33], [34], [35], [36], traffic demands in [37], and QoS constraints in [38]. However, such work does not have an experimental validation as presented here.…”

Section: Related Workmentioning

confidence: 99%

Wi-Fi Channel Bonding: An All-Channel System and Experimental Study From Urban Hotspots to a Sold-Out Stadium

Barrachina‐Muñoz

Bellalta

Knightly

2021

IEEE/ACM Trans. Networking

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In this paper, we present WACA, the first system to simultaneously measure all 24 Wi-Fi channels that allow channel bonding at 5 GHz with microsecond scale granularity. With WACA, we perform a first-of-its-kind measurement study in areas including urban hotspots, residential neighborhoods, universities, and even a game in Futbol Club Barcelona's Camp Nou, a sold-out stadium with 98,000 fans and 12,000 simultaneous Wi-Fi connections. We study channel bonding in this environment, and our experimental findings reveal the underpinning factors controlling throughput gain, including channel bonding policy and spectrum occupancy statistics. We then show the significance of the gathered dataset for finding insights, which would not be possible otherwise, given that simple channel occupancy models severely underestimate the available gains. Likewise, we characterize the risks of channel bonding due to other BSS's, including their missed transmission opportunities and potential collisions due to imperfect sensing of bonded transmissions. We explore 802.11ax which imposes constraints on bonded channels to avoid fragmentation and defines different modes that can trade implementation complexity for throughput. Lastly, we show that the stadium, while seemingly too highly occupied for channel bonding gains, has transient gaps yielding impressive gains.

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Section: Related Workmentioning

confidence: 99%

Wi-Fi Channel Bonding: An All-Channel System and Experimental Study From Urban Hotspots to a Sold-Out Stadium

Barrachina‐Muñoz

Bellalta

Knightly

2021

IEEE/ACM Trans. Networking

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“…However, they only considered a centralization scenario with relatively few contending stations. The authors of [17] proposed a channel allocation method to utilize channels for bonding patterns in DBC. This scheme creates a bonding matrix (BM) that stores information about occupied channels and each AP has its own BM.…”

Section: Literature Reviewmentioning

confidence: 99%

An Adaptive Common Control Channel MAC with Transmission Opportunity in IEEE 802.11ac

Alsufyani¹,

Almotairi²

2021

J. ICT Res. Appl.

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Spectral utilization is a major challenge in wireless ad hoc networks due in part to using limited network resources. For ad hoc networks, the bandwidth is shared among stations that can transmit data at any point in time. It Â is important to maximize the throughput to enhance the network service. In this paper, we propose an adaptive multi-channel access with transmission opportunity protocol for multi-channel ad hoc networks, called AMCA-TXOP. For the purpose of coordination, the proposed protocol uses an adaptive common control channel over which the stations negotiate their channel selection based on the entire available bandwidth and then switch to the negotiated channel. AMCA-TXOP requires a single radio interface so that each station can listen to the control channel, which can overhear all agreements made by the other stations. This allows parallel transmission to multiple stations over various channels, prioritizing data traffic to achieve the quality-of-service requirements. The proposed approach can work with the 802.11ac protocol, which has expanded the bandwidth to 160 MHz by channel bonding. Simulations were conducted to demonstrate the throughput gains that can be achieved using the AMCA-TXOP protocol. Moreover, we compared our protocol with Â the IEEE 802.11ac standard protocols.

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“…If the score is satisfactory, the AP remains on this channel, otherwise, it resumes its exploration. Two scenarios are studied in [23] corresponding to an enterprise and a residential WLAN. Their method to the CA problem considers the constraints imposed by bonding, and attempts to use wider bandwidths as they often result in higher throughput.…”

Section: Related Workmentioning

confidence: 99%

Assigning channels in WLANs with channel bonding: A fair and robust strategy

Chadda

Stojanova²,

Begin³

et al. 2021

Computer Networks

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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Dynamic Channel Bandwidth Use through Efficient Channel Assignment in IEEE 802.11ac Networks

Cited by 12 publications

References 8 publications

Wi-Fi Channel Bonding: An All-Channel System and Experimental Study From Urban Hotspots to a Sold-Out Stadium

Wi-Fi Channel Bonding: An All-Channel System and Experimental Study From Urban Hotspots to a Sold-Out Stadium

An Adaptive Common Control Channel MAC with Transmission Opportunity in IEEE 802.11ac

Assigning channels in WLANs with channel bonding: A fair and robust strategy

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