Secondary Link for AR/VR Headset Connectivity
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Solution Overview
Problem
Wearable display technologies for virtual reality (VR) and augmented reality (AR) face challenges in maintaining reliable data transmission due to blockages and quality issues with primary links, leading to disruptions in user experience.
Innovation Solution
Implementing a secondary link with high availability and reliability, such as Bluetooth or low-power WiFi, which can be activated when primary link quality falls below certain thresholds, ensuring continuous data transmission and minimizing user experience disruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a primary link is used for VR/AR applications, then high bandwidth and low latency are achieved, but reliability deteriorates due to blockages and quality issues
Solution Approach 1:
The communication link is segmented into a primary link (e.g., Wi-Fi 6GHz) for high-speed data transmission and a secondary link (e.g., Bluetooth 5.0) for reliable backup communication. Each link handles different functions: the primary link provides high bandwidth when available, while the secondary link ensures continuity when the primary link fails due to blockages or quality issues.
Solution Approach 2:
The secondary link acts as an intermediary backup connection that mediates between the primary link and the head wearable display. When the primary link experiences blockages or quality degradation, the secondary link intermediates the data transmission to maintain connectivity, ensuring continuous operation of VR/AR applications.
2Reliability
If a secondary link is activated for backup, then reliability is improved, but device complexity increases
Solution Approach 1:
The secondary link is pre-configured and ready to activate automatically when the primary link fails. The system performs preliminary actions by establishing the secondary link in advance but keeping it inactive until needed. When blockages or quality issues occur with the primary link, the secondary link is already prepared to take over, minimizing the complexity of real-time decision-making.
Solution Approach 2:
The system continuously monitors the quality metrics of the primary link (signal strength, latency, packet loss) and uses this feedback to determine when to switch to the secondary link. This automated feedback mechanism simplifies link management by removing the need for manual intervention and complex real-time optimization algorithms.
3Reliability
If link quality monitoring is performed continuously, then reliability is maintained, but energy consumption increases
Solution Approach 1:
Instead of continuous monitoring, the system performs link quality measurements at periodic intervals. The measurement frequency is dynamically adjusted based on current conditions: higher frequency when the primary link quality is marginal (near threshold values), and lower frequency when quality is stable. This periodic action maintains reliability while significantly reducing energy consumption compared to continuous monitoring.
Solution Approach 2:
The system uses self-service mechanisms where the head wearable display and console automatically evaluate link quality metrics and make decisions about link switching without external intervention. The periodic measurements and automated threshold comparisons enable the system to self-regulate energy consumption while maintaining reliable operation.
Data Source
AI summary
Disclosed herein a system, a method and a device for selecting between a primary link and a secondary link for AR/VR applications. A console can provide a VR/AR session to a user through a head wearable display. The console can determine that a first measurement of a primary link between the console and a head wearable display is less than a first threshold. The first measurement can include a quality metric of the primary link. The console can activate a secondary link between the console and the head wearable display. The console can determine whether a second measurement of the primary link between the console and the head wearable display is less than a second threshold. The console can transition when the second measurement is less than the second threshold, traffic on the primary link to the activated secondary link.