Performance and Coexistence Evaluation of IEEE 802.11be Multi-link Operation

Carrascosa, Marc; Giordano, Lorenzo Galati; Jönsson, Anders; Geraci, Giovanni; Bellalta, Boris

doi:10.48550/arxiv.2205.15065

Cited by 2 publications

(3 citation statements)

References 7 publications

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“…This approach reduces the channel access delay because the delay is determined by its minimal value among multiple channels. In [9][10][11][12]45,46], the authors also explore the potential of MLO to reduce delays. Note that all the methods studied in these works require the PHY complication of RTA devices, in particular, to have at least one extra interface for wireless medium access, which significantly increases the cost of devices.…”

Section: Related Workmentioning

confidence: 99%

Smart Preliminary Channel Access to Support Real-Time Traffic in Wi-Fi Networks

et al. 2022

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Real-time applications (RTA) are an important use case for IEEE 802.11be, a new amendment to the Wi-Fi standard. This amendment introduces new complicated mechanisms to provide low delay and high reliability for RTA, but many of them are not supported by legacy devices that may be present in future Wi-Fi networks. In contrast, the preliminary channel access (PCA) method is designed to satisfy strict RTA requirements even in the presence of legacy devices and does not require significant changes to the Wi-Fi protocol. However, it significantly reduces the capacity for non-RTA traffic. This paper introduces a Smart PCA method, which improves the performance of all the stations in scenarios with multiple RTA stations. Extensive simulation shows that the Smart PCA method guarantees low delays for intensive RTA traffic in these scenarios. Moreover, it doubles the network capacity for the stations with non-RTA traffic.

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Section: Related Workmentioning

confidence: 99%

Smart Preliminary Channel Access to Support Real-Time Traffic in Wi-Fi Networks

et al. 2022

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“…A dynamic strategy such as multi-link congestion-aware load balancing (MCAB) has been proposed to periodically adjust the traffic-to-link allocation in order to follow channel occupancy changes. The traffic distribution policy over multiple links investigated in [4], [10], [11] has been experimentally demonstrated to improve worst-case latency and network throughput. Although MCAB is proposed to improve any existing MLO topology, these works have not studied intelligent AP-STA pairing and radio link allocation problems.…”

Section: Introductionmentioning

confidence: 99%

“…In our paper, we propose an AP-STA pairing and radio link allocation for enterprise-level network architecture. It should be noted that the optimization problem is formulated by assuming the coexistence [11] of single link (SL), multi-link single radio (MLSR), and multilink multiple radio (MLMR).…”

Section: Introductionmentioning

confidence: 99%

Synchronous Multi-Link Access in IEEE 802.11be: Modeling and Network Sum Rate Optimization

Zhang

Gao

Sun

et al. 2022

ICC 2022 - IEEE International Conference on Communications

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IEEE 802.11be (Wi-Fi 7) introduces a new concept called multi-link operation (MLO) which allows multiple Wi-Fi interfaces in different bands (2.4,5, and 6 GHz) to work together to increase network throughput, reduce latency, and improve spectrum reuse efficiency in dense overlapping networks. To make the most of MLO, a new intelligent resource allocation is needed. This paper proposes a model to align MLO and access point (AP) coordination in 11be. To maximize network throughput, a network topology optimization problem is formulated for MLO with AP coordination, which is solved by exploiting the totally unimodular property of the bipartite graph formed by the connection between AP and station (STA) in Wi-Fi networks. Subsequently, a proportional fairness algorithm is applied for radio link allocation, network throughput optimization considering the channel condition, and the fairness of the multi-link device (MLD) data rate. The performance of the proposed algorithm on two main MLO implementations -multi-mink multi-radio (MLMR) with simultaneous transmission and reception (STR), and the interplay between multiple nodes employing them are evaluated through cross-layer (PHY-MAC) data rate simulation with PHY abstraction.

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Performance and Coexistence Evaluation of IEEE 802.11be Multi-link Operation

Cited by 2 publications

References 7 publications

Smart Preliminary Channel Access to Support Real-Time Traffic in Wi-Fi Networks

Smart Preliminary Channel Access to Support Real-Time Traffic in Wi-Fi Networks

Synchronous Multi-Link Access in IEEE 802.11be: Modeling and Network Sum Rate Optimization

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