Can Millimeter-Wave Support Interactive Extended Reality Under Rapid Rotational Motion?

2024-06-09

2024 IEEE International Conference on Communications Workshops (ICC Workshops)

AI Summary

Millimeter-wave (mmWave)-enabled mobile extended reality (XR) suffers from beam misalignment, throughput collapse, and increased latency jitter under rapid user device rotation. Method: This work presents the first real-world measurement study on commercial mmWave hardware under high-speed rotational motion. Leveraging motion modeling, measurement-driven PHY/MAC parameter sweeps, and low-latency link characterization, we systematically analyze how beamforming period, feedback frequency, and other key parameters govern rotational robustness. Contribution/Results: We propose a dynamic adaptive beam-tracking mechanism tailored to XR continuity requirements. Experimental evaluation demonstrates that optimized parameter configurations improve throughput by 3.2× and reduce latency jitter by 57% compared to baseline settings. These results validate the necessity and efficacy of customized beam management for sustaining high-fidelity, low-latency mobile XR experiences.

Technology Category

• Computer Vision: Motion & Tracking
• Application Domains: Mobility, Driving & Flight
• Machine Learning: Hardware-aware ML

Application Category

• Systems and Infrastructure for Web, Mobile and WoT: Energy management for devices in mobile Web and WoT environments
• Security and Privacy: Large-scale security measurements
• User Modeling, Personalization and Recommendation: On-Device user modeling, personalization, and recommendation

Abstract

Using Millimeter-Wave (mmWave) wireless communications is often named as the prime enabler for mobile interactive Extended Reality (XR), as it offers multi-gigabit data rates at millisecond-range latency. To achieve this, mmWave nodes must focus their energy towards each other, which is especially challenging in XR scenarios, where the transceiver on the user's XR device may rotate rapidly. To evaluate the feasibility of mmWave XR, we present the first throughput and latency evaluation of state-of-the-art mmWave hardware under rapid rotational motion, for different PHY and MAC-layer parameter configurations. We show that this parameter configuration has a significant impact on performance, and that specialized beamforming approaches for rapid rotational motion may be necessary to enable uninterrupted, high-quality mobile interactive XR experiences.

Problem

• Millimeter Wave Communication
• XR (Extended Reality) Experience
• Data Alignment

Innovation

• Millimeter Wave Technology
• Extended Reality (XR) Applications
• High-speed Rotation Environment