SINR-Based Distributed Beam Selection for HWD Interference
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Solution Overview
Problem
In artificial reality systems, interference between head wearable displays (HWDs) and consoles due to co-location and head movements degrades user experience by reducing signal quality and increasing noise, leading to suboptimal communication links.
Innovation Solution
A method and device for performing distributed beam selection based on signal-to-interference-plus-noise ratio (SINR) to optimize communication links by selecting beams with the highest SINR, iteratively adjusting beamforming to minimize interference and maximize signal quality, even in the presence of interfering links.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple HWDs and consoles are co-located to enable artificial reality experiences, then user immersion and interaction are improved, but interference between communication links increases and signal quality deteriorates
Solution Approach 1:
The patent segments the communication space by assigning different beams to different communication links between HWDs and consoles. Each beam is selectively activated based on SINR conditions, effectively dividing the shared wireless medium into isolated communication channels that prevent interference between co-located devices
Solution Approach 2:
The system dynamically adjusts beam selection based on real-time SINR measurements. When interference is detected (SINR degrades below threshold), the system switches from using a beam to using a different beam, adapting the communication configuration to current environmental conditions to maintain optimal performance
2Reliability
If beamforming is performed to improve signal quality, then link performance is improved, but computational complexity and coordination requirements increase
Solution Approach 1:
Each device (HWD and console) independently performs SINR measurements and makes autonomous beam selection decisions based on local observations. The system operates in a distributed manner where devices self-organize their beam configurations without requiring centralized coordination, reducing computational burden and system complexity
Solution Approach 2:
The system implements feedback through SINR measurement and comparison against thresholds. Each device monitors its own link quality and triggers beam selection changes only when necessary (when SINR degrades), creating an efficient feedback loop that maintains performance while minimizing unnecessary computational operations
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances user experience by reducing interference and improving overall link performance, maintaining high SINR ratios without the need for centralized coordination, thus reducing computational complexity and hardware costs.
Implementation Method 1
performing beamforming to provide a first plurality of beams for a first link between the first HWD and the first console
Data Source
AI summary
Systems and methods for iterative distributed beam selection include a device including at least one of a first head wearable display (HWD), a second HWD, a first console or a second console. The device detects a predefined condition. The device performs a first distributed beam selection responsive to detecting the predefined condition. Performing the first distributed beam selection includes performing beamforming to provide a first plurality of beams for a first link between the first HWD and the first console, selecting a first beam of the first link with a highest signal-to-interference-plus-noise ratio (SINR) from the first plurality of beams, performing beamforming to provide a second plurality of beams for a second link between the second HWD and the second console while the first beam of the first link is active, and selecting a second beam of the second link with a highest SINR from the second plurality of beams.