Beamforming Training During Vertical Blanking Intervals
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless VR video streaming faces challenges with low latency and video quality issues due to link deterioration and data loss, which affects the user experience, especially when traditional cable connections are eliminated.
Innovation Solution
The implementation of periodic beamforming training procedures during vertical blanking intervals (VBIs) in wireless communication systems to optimize antenna configurations and maintain link quality without interfering with video data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beamforming training procedures are performed periodically to optimize antenna configurations and maintain link quality, then reliability is improved, but loss of time increases due to training overhead
Solution Approach 1:
The patent extracts the beamforming training procedure from the active video data transmission period and places it in the vertical blanking interval. This separation removes the training overhead from the time available for video data transfer, resolving the contradiction between maintaining link quality through periodic training and minimizing time loss from training operations.
Solution Approach 2:
The patent performs beamforming training in advance during the vertical blanking interval before the active video transmission begins. This preliminary action ensures that antenna configurations are optimized before video data transfer starts, maintaining reliability without interfering with the actual video streaming process.
2Reliability
If beamforming training is performed during active video transmission, then link quality is maintained, but productivity decreases due to interference with video data transfer
Solution Approach 1:
The patent extracts the beamforming training procedure from the active video transmission period and relocates it to the vertical blanking interval. This extraction eliminates the interference between training operations and video data transfer, maintaining link quality while preserving video streaming productivity.
Solution Approach 2:
The patent implements periodic beamforming training that is synchronized with the video frame structure, performing training during the periodic vertical blanking intervals. This periodic action ensures link quality maintenance occurs at regular intervals without continuously interfering with video data transmission during active periods.
3Ease of operation
If wireless transmission is used to eliminate cable connections and enable unrestricted movement, then ease of operation is improved, but reliability worsens due to link deterioration and data loss
Solution Approach 1:
The patent implements a self-service mechanism where the wireless transmission system automatically performs beamforming training during vertical blanking intervals to detect and correct link deterioration. This self-service approach maintains video stream quality without requiring user intervention, resolving the contradiction between wireless mobility and transmission reliability.
Solution Approach 2:
The patent incorporates feedback mechanisms through beamforming training procedures that continuously assess link quality and adjust antenna configurations accordingly. This feedback loop maintains reliable video transmission over wireless links, enabling unrestricted user movement while compensating for link deterioration caused by mobility.
Data Source
AI summary
Systems, apparatuses, and methods for scheduling beamforming training during vertical blanking intervals (VBIs) are disclosed. A system includes a transmitter sending a video stream over a wireless link to a receiver. The wireless link between the transmitter and the receiver has capacity characteristics that fluctuate with variations in the environment. To combat the fluctuating capacity characteristics of the link, the transmitter and the receiver perform periodic beamforming training procedures to determine whether to adjust the beamforming characteristics of their respective antennas. To avoid interfering with the video data being sent, the system waits until a VBI to perform a beamforming training procedure. If the beamforming training procedure cannot be completed in a single VBI, then multiple VBIs can be used for performing separate portions of the beamforming training procedure. In one embodiment, the system can perform a beamforming training procedure every N VBIs, where N is a positive integer.