Wireless Mesh Transceivers for Obstructed VR Video Paths
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Solution Overview
Problem
Wireless VR systems face challenges in maintaining high-quality video streaming due to obstructions that degrade link quality between the master transceiver and the receiver, leading to poor user experience and reduced video quality.
Innovation Solution
Deploying multiple transceivers in a mesh network and using beamforming training procedures to determine the best path for video data transmission, dynamically switching between transceivers to maintain a stable and high-quality link, even in environments with obstructions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single direct wireless link is used between master transceiver and receiver, then the system is simple and latency is low, but link quality deteriorates when obstructions are present
Solution Approach 1:
The patent introduces intermediate transceivers as mediators in the wireless transmission path. When the direct link between master transceiver and receiver is obstructed, data is routed through one or more intermediate transceivers that relay the signal, thereby maintaining link quality while managing complexity through selective path establishment
2Reliability
If multiple transceivers are deployed in a mesh network, then link reliability is improved through alternative paths, but system complexity and initialization overhead increase
Solution Approach 1:
The patent performs beamforming training procedures in advance during system initialization and periodically thereafter, before actual data transmission begins. This preliminary action pre-establishes the optimal transmission paths and beamforming parameters, so that when data needs to be transmitted, the system can immediately use the pre-determined routes without time-consuming real-time training
3Reliability
If beamforming training procedures are performed to determine the best path, then video quality is maintained, but transmission latency increases
Solution Approach 1:
Beamforming training is executed in advance during initialization and periodically, rather than in real-time for each video frame. This allows the system to pre-determine optimal paths and beamforming parameters, storing them for immediate use during data transmission, thereby maintaining video quality while minimizing latency during actual operation
4Productivity
If the master transceiver transmits directly to the receiver, then the path is simple and latency is low, but obstructions cause data loss and quality degradation
Solution Approach 1:
The patent introduces intermediate transceivers as mediators to relay video data when the direct path between master transceiver and receiver is obstructed. The system dynamically selects alternative paths through one or more intermediate transceivers, preventing data loss and maintaining streaming continuity despite physical obstructions in the environment
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 ensures continuous and high-quality video streaming by adaptively selecting the best transmission path, reducing data loss and maintaining low latency, thereby enhancing the VR experience.
Implementation Method 1
Beamforming techniques to choose transceivers in a wireless mesh network
Data Source
AI summary
Systems, apparatuses, and methods for implementing beamforming techniques to choose transceivers in a wireless mesh network are disclosed. Multiple transceivers are deployed in a wireless virtual reality (VR) environment to provide a high quality path to send an encoded video stream from a graphics source to a head-mounted display (HMD) receiver. When a master transceiver connected to the graphics source does not have a line of sight connection to the HMD, the master transmitter sends the encoded video stream on a path though one or more passive transceivers that have good line of sight connections on the path to the HMD. To determine the quality of the wireless links between the various transceivers and the HMD, beamforming training procedures are performed. These beamforming training procedures are implemented to determine how to route the encoded video stream from the master transceiver to the HMD.