Can cloud-based VR streaming handle Wi-Fi OBSS contention?

2025-07-10

AI Summary

This study addresses performance degradation of cloud VR streaming in Wi-Fi overlapping basic service set (OBSS) scenarios. We systematically evaluate the impact of neighboring network interference on VR quality-of-experience under partial and full 80 MHz channel overlap. Using experimentally configured symmetric and asymmetric traffic load environments, we discover that interference on secondary 40 MHz subchannels is significantly stronger than on the primary channel, and—counterintuitively—that full 80 MHz overlap with two competing networks induces less interference than partial overlap with a single high-load competitor. Based on these findings, we propose NeSt-VR, an adaptive channel-aware interference mitigation algorithm. Experimental results demonstrate that NeSt-VR effectively suppresses multi-OBS interference, ensuring low-latency and highly stable VR streaming under severe interference conditions. This work provides a critical solution for deploying cloud VR in dense Wi-Fi environments.

Technology Category

• Computer Vision: Motion & Tracking
• Planning, Routing, and Scheduling: Optimization of Spatio-temporal Systems
• Humans and AI: Game Design — Virtual Humans, NPCs and Autonomous Characters

Application Category

• Systems and Infrastructure for Web, Mobile and WoT: Virtualization and resource management in Web systems and infrastructures
• Responsible Web: Human-perceived consequences of algorithmic deployment on the web
• Search and Retrieval-Augmented AI: Vertical and domain-specific search

Abstract

This paper experimentally analyzes the negative impact of contention caused by neighboring Wi-Fi networks operating on overlapping channels on Virtual Reality (VR) streaming over Wi-Fi, focusing on scenarios of partial and full channel overlap within an 80 MHz channel. Our results show that (i) increasing the number of 80 MHz Overlapping Basic Service Sets (OBSSs) intensifies contention and degrades VR streaming performance; (ii) OBSS activity on the secondary-sided 40 MHz portion degrades performance more than activity on the primary-sided 40 MHz portion; (iii) for the same aggregate load, full channel overlap with two 40 MHz OBSS contenders is less detrimental than partial overlap with a single high-load 40 MHz contender, but more disruptive than full overlap with two 80 MHz contenders; and (iv) full channel overlap with two 40 MHz OBSS contenders has a smaller impact on VR streaming under symmetric traffic loads than under asymmetric loads. Moreover, our results demonstrate that our previously proposed Network-aware Step-wise adaptive bitrate algorithm for VR streaming (NeSt-VR) effectively mitigates performance degradation in OBSS environments, enabling VR streaming under heavier OBSS traffic conditions.

Problem

• Impact of Wi-Fi OBSS contention on cloud VR streaming
• Performance degradation due to overlapping channel interference
• Mitigating VR streaming issues in high OBSS traffic

Innovation

• Analyzes Wi-Fi OBSS impact on VR streaming
• Compares partial and full channel overlap effects
• Proposes NeSt-VR algorithm for performance mitigation