Multi-RAT Wireless Blanking with Adaptive Channel Feedback
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Solution Overview
Problem
Multi-RAT and DSDA capable wireless devices face performance degradation due to transmit and receive blanking on one link affecting another, leading to reduced throughput, increased latency, and inaccurate channel state feedback.
Innovation Solution
Implement techniques such as modifying channel state feedback reporting, performing antenna reselection, and selectively dropping transmissions to mitigate the impact of blanking, ensuring seamless operation across multiple wireless links.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transmit and receive blanking is performed on one wireless link to support another wireless link operation, then the other wireless link can operate without interference, but the blanked link experiences performance degradation including reduced throughput and increased latency
Solution Approach 1:
The system performs preliminary identification of blanking patterns and proactively adjusts channel state feedback reporting, antenna selections, and transmission configurations before blanking occurs. This allows the affected wireless link to maintain optimal performance by pre-adapting to the upcoming blanking events based on identified patterns from the other wireless link's operation.
2Measurement precision
If transmit and receive blanking is performed on one wireless link, then the other wireless link can maintain accurate channel state feedback, but the blanked link experiences inaccurate channel state feedback and reduced communication quality
Solution Approach 1:
The system extracts and identifies blanking patterns from the operation of one wireless link, then separately processes channel state feedback for the affected link by excluding or adjusting feedback that would be corrupted by the identified blanking events. This separation allows accurate channel state feedback to be obtained for the non-blanked link while compensating for the blanked link's degraded feedback quality.
3Adaptability or versatility
If multiple radio access technologies operate simultaneously in a wireless device, then the device gains enhanced functionality and connectivity, but interference occurs between the different radio access technologies requiring blanking
Solution Approach 1:
The system establishes feedback mechanisms where each wireless link monitors and reports its operation status, including identification of blanking patterns and performance metrics. This feedback loop enables the system to dynamically adjust the operation of different radio access technologies, optimizing their coexistence by adapting transmission parameters, timing, and resource allocation based on real-time conditions from both links.
Data Source
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AI summary
This disclosure relates to techniques for multi-RAT and DSDA capable wireless devices to handle frame blanking in a wireless communication system. A wireless device may establish wireless links according to a first radio access technology and a second radio access technology. The wireless device may determine to perform transmit and receive blanking for one or more antennas of the wireless device for the first radio access technology to perform sounding reference signal transmissions for the second radio access technology based at least in part on a band combination for the wireless links. The wireless device may determine a modification to channel state feedback reporting for the first radio access technology based at least in part on the transmit and receive blanking. The wireless device may perform channel state feedback reporting using the determined modification.