Separate CRC Predictions for XR Video Compression
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR, face challenges in efficiently compressing signals for enhanced mobile broadband, massive machine-type communications, and ultra-reliable low-latency communications, especially for XR devices which require high video quality, low latency, and reduced power consumption.
Innovation Solution
The proposed solution involves a method where a signal is compressed using an encoder scheme that includes a first cyclic redundancy check (CRC) associated with a prediction index and a second CRC associated with a prediction information component. This configuration allows for improved video quality by enabling separate predictions and estimating missing data based on CRC indications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If separate CRCs are used for prediction index and prediction information component, then video quality is improved, but device complexity increases
Solution Approach 1:
The patent divides the CRC verification into separate components: a first CRC for the prediction index and a second CRC for the prediction information component. This segmentation allows independent verification of each component, enabling the receiver to determine whether to use prediction-based estimation or direct decoding based on which CRC passes, thereby improving video quality while maintaining manageable complexity through modular verification.
2Productivity
If prediction-based compression is used, then processing overhead is reduced, but reliability of decoded signal decreases
Solution Approach 1:
The patent implements feedback through CRC verification of both the prediction index and prediction information component. The receiver uses the CRC results to determine whether the prediction-based decoding was successful or if alternative methods are needed. This feedback mechanism allows the system to maintain prediction-based compression for efficiency while ensuring reliability through verification and corrective measures when necessary.
3Quantity of substance
If compression is applied to XR signals, then bandwidth efficiency is improved, but latency increases
Solution Approach 1:
The patent applies partial compression by using prediction-based encoding only when appropriate, rather than always using full compression. The CRC verification allows the receiver to determine the appropriate decoding method, enabling the system to balance bandwidth efficiency with latency requirements by applying compression selectively rather than universally, thus maintaining low latency for time-sensitive XR applications while improving overall bandwidth efficiency.
Data Source
AI summary
Method and apparatus for compression in wireless communication systems. The apparatus compresses a signal based on an encoder scheme, wherein an encoded signal comprises at least a first CRC associated with a prediction index and a second CRC associated with a prediction information component. The apparatus transmits, to a second wireless device, the encoded signal comprising at least the first CRC associated with the prediction index and the second CRC associated with the prediction information component. The apparatus may be configured to compress the signal such that the signal comprises one or more parity bits, where the one or more parity bits correspond to a difference between a frame of the signal and at least one subsequent frame of the signal.