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Interference-Aware Sector Design in IEEE 802.11ad Networks

Guillaume Gaillard 1 Gentian Jakllari 1
1 IRIT-RMESS - Réseaux, Mobiles, Embarqués, Sans fil, Satellites
IRIT - Institut de recherche en informatique de Toulouse
Abstract : IEEE 802.11ad is the first standard capable of delivering Gigabit capacities in a WLAN setting by exploiting mmWave frequencies. Its key innovation is the Sector Level Sweep, a procedure for establishing directional links over mmWave by sweeping over a pre-computed set of phased-array antenna sectors. Crucial to the performance of IEEE 802.11ad networks and involving an exponentially-large search space, the sector design is left open to implementation. As a result, several sector designs have been introduced that are aimed at maximizing the SNR of a given direct link while ignoring the interference projected to other links. If highly competitive in small deployments, a sector design that does not take interference into account can lead to poor overall performance in multi-AP deployments. In this article we present IASSEN, the first approach to Interference-Aware Sector deSign in IEEE 802.11ad Networks. Anchored in an intimate understanding of COTS 802.11ad hardware, IASSEN models the SINR for each network link as function of the low-level parameters driving the sector design. After modeling the problem of interference-aware sector design as an integer nonlinear programming problem, IASSEN introduces a heuristic carefully combining a quick convergence to a local optimum with an approach for avoiding poor local optimum points. A simulation study using measurement-based and realistic sector patterns shows that IASSEN improves overall network performance by as much as 100% when compared to state-of-the-art approaches that do not take interference into account.
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https://hal.inria.fr/hal-03276187
Contributor : Guillaume Gaillard Connect in order to contact the contributor
Submitted on : Thursday, July 1, 2021 - 6:08:59 PM
Last modification on : Tuesday, October 19, 2021 - 2:24:25 PM
Long-term archiving on: : Saturday, October 2, 2021 - 7:14:02 PM

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  • HAL Id : hal-03276187, version 1

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Guillaume Gaillard, Gentian Jakllari. Interference-Aware Sector Design in IEEE 802.11ad Networks. 30th International Conference on Computer Communications and Networks (ICCCN 2021), Jul 2021, Athens / Virtual, Greece. ⟨hal-03276187⟩

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