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arXiv · 2304.01693

Performance of 802.11be Wi-Fi 7 with Multi-Link Operation on AR Applications

Molham Alsakati·Charlie Pettersson·Sebastian Max·Vishnu Narayanan Moothedath·James Gross
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Abstract

Since its first release in the late 1990s, Wi-Fi has been updated to keep up with evolving user needs. Recently, Wi-Fi and other radio access technologies have been pushed to their edge when serving Augmented Reality (AR) applications. AR applications require high throughput, low latency, and high reliability to ensure a high-quality user experience. The 802.11be amendment, which will be marketed as Wi-Fi 7, introduces several features that aim to enhance its capabilities to support challenging applications like AR. One of the main features introduced in this amendment is Multi-Link Operation (MLO) which allows nodes to transmit and receive over multiple links concurrently. When using MLO, traffic is distributed among links using an implementation-specific traffic-to-link allocation policy. This paper aims to evaluate the performance of MLO, using different policies, in serving AR applications compared to Single-Link (SL). Experimental simulations using an event-based Wi-Fi simulator have been conducted. Our results show the general superiority of MLO when serving AR applications. MLO achieves lower latency and serves a higher number of AR users compared to SL with the same frequency resources. In addition, increasing the number of links can improve the performance of MLO. Regarding traffic-to-link allocation policies, we found that policies can be more susceptible to channel blocking, resulting in possible performance degradation.

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Molham Alsakati, Charlie Pettersson, Sebastian Max, Vishnu Narayanan Moothedath, James Gross. 2023-04-04. Performance of 802.11be Wi-Fi 7 with Multi-Link Operation on AR Applications. https://arxiv.org/abs/2304.01693

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