PSFCH Subset Detection Under Concurrent Sidelink Feedback Limits
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing concurrent physical sidelink feedback channel (PSFCH) transmissions, particularly in scenarios where multiple user equipment (UEs) transmit PSFCHs simultaneously, leading to limitations in detection capacity.
Innovation Solution
A method and apparatus for UE to identify a subset of PSFCH transmissions that can be concurrently detected, allowing for efficient monitoring and processing of PSFCHs within a slot, by determining a subset that satisfies a condition based on the maximum detectable PSFCH transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple UEs transmit PSFCHs simultaneously in the same slot, then the system supports higher communication capacity and connectivity, but the detection capacity of a receiving UE becomes insufficient and detection accuracy deteriorates
Solution Approach 1:
The patent segments the set of concurrently transmitted PSFCHs into multiple subsets, where each subset contains a manageable number of PSFCH transmissions that can be detected within the UE's detection capacity. The receiving UE processes each subset separately, ensuring detection accuracy is maintained for each segment while supporting a larger overall number of concurrent transmissions through the segmentation approach.
2Loss of information
If a UE attempts to detect all PSFCH transmissions in a slot, then complete feedback information is obtained, but the processing complexity and time consumption increase beyond UE capabilities
Solution Approach 1:
The patent divides the detection task into multiple segments corresponding to different subsets of PSFCH transmissions. Instead of attempting to detect all PSFCHs simultaneously, the UE processes each subset separately, reducing the per-subset detection complexity to within UE capabilities while collectively obtaining feedback information from all transmitted PSFCHs through the segmented processing approach.
Solution Approach 2:
The patent enables the UE to detect a subset of PSFCH transmissions that falls within its detection capacity, rather than requiring detection of all transmissions. By processing multiple subsets across different time resources, the system achieves near-complete feedback information collection while maintaining processing complexity at manageable levels through partial action on each subset.
3Reliability
If the UE processes all PSFCH transmissions in a slot, then comprehensive resource availability determination is achieved, but the time required exceeds the slot duration and productivity decreases
Solution Approach 1:
The patent segments PSFCH detection across multiple slots, where each slot processes a specific subset of PSFCH transmissions. This segmentation allows the UE to complete detection of each subset within the slot duration, maintaining processing speed and productivity, while achieving comprehensive resource availability determination through the accumulation of results from multiple segmented detection operations across different slots.
Data Source
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AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine that a first quantity of physical sidelink feedback channel (PSFCH) transmissions to be transmitted in a slot fails to satisfy a condition that is based at least in part on a maximum quantity of PSFCH transmissions the UE can concurrently detect. The UE may identify, among the PSFCH transmissions to be transmitted in the slot, a subset of the PSFCH transmissions to be detected. For example, the subset of the PSFCH transmissions to be detected may include a second quantity of the PSFCH transmissions that satisfies the condition. Accordingly, the UE may monitor, during the slot, a PSFCH for the subset of the PSFCH transmissions. Numerous other aspects are provided.