Media Bit Rate Adaptation for Wireless Channel Quality
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Solution Overview
Problem
In augmented and virtual reality applications, the degradation in channel quality from licensed to unlicensed wireless spectra can lead to latency issues and motion sickness due to insufficient bit rate support, affecting the user experience.
Innovation Solution
A system and method for negotiating session details and adapting media information, such as bit rate and resolution, based on the quality of wireless channels, by determining the channel quality through metrics like jitter and packet loss, and adjusting the bit rate to ensure consistent performance across both licensed and unlicensed spectrum connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If media bit rate is increased to improve image quality in AR/VR applications, then the quality of service is improved, but the wireless channel quality degradation causes latency and packet loss
Solution Approach 1:
The system dynamically adjusts the media bit rate based on real-time wireless channel conditions. The computing device monitors channel quality metrics (packet loss rate, jitter) and adapts the video bit rate accordingly, transitioning between different bit rate levels to maintain optimal performance under varying channel conditions.
Solution Approach 2:
The system implements a feedback mechanism where channel quality information is continuously monitored and fed back to the computing device. Based on this feedback, the bit rate is adjusted to match the actual channel capabilities, ensuring reliable communication while maintaining acceptable image quality.
2Adaptability or versatility
If the wireless channel operates in unlicensed spectrum to enable flexibility, then the adaptability is improved, but the channel quality degradation increases latency and affects real-time performance
Solution Approach 1:
The system performs preliminary channel quality assessment before finalizing the media session. By evaluating channel conditions in advance and negotiating appropriate bit rates beforehand, the system prepares optimal transmission parameters that prevent latency issues during actual real-time operation.
Solution Approach 2:
The system changes transmission parameters (bit rate, resolution) based on the operational mode (licensed vs. unlicensed spectrum). When operating in unlicensed spectrum with potential latency, the system adjusts parameters to prioritize low-latency communication over maximum quality, while maintaining adaptability across different spectrum types.
3Reliability
If the bit rate is reduced to accommodate channel quality limitations, then the reliability is improved, but the image quality and user experience deteriorate
Solution Approach 1:
The system dynamically adjusts the media bit rate based on real-time wireless channel conditions. The computing device monitors channel quality metrics (packet loss rate, jitter) and adapts the video bit rate accordingly, transitioning between different bit rate levels to maintain optimal performance under varying channel conditions.
Solution Approach 2:
The system implements a feedback mechanism where channel quality information is continuously monitored and fed back to the computing device. Based on this feedback, the bit rate is adjusted to match the actual channel capabilities, ensuring reliable communication while maintaining acceptable image quality.
Data Source
AI summary
Described embodiments provide systems and methods for adapting/negotiating media information. A first device may determine a channel quality of a wireless channel in an unlicensed spectrum between the first device and a first tethered device. The first device may determine a first bit rate supportable on the wireless channel according to the channel quality. The first device may send, to the second device, an offer message with an offered bit rate comprising a lower of the first bit rate or a second bit rate supportable by a connection between the first device and the second device at least partially across a licensed spectrum. The first device may receive, from the second device, a reply message with a reply bit rate that is less than or equal to the offered bit rate, to apply to wireless communication across at least the first tethered device, the first device and the second device.