Sidelink HARQ-ACK Multiplexing Across Overlapping Uplink Priorities
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Solution Overview
Problem
In mobile communication systems, the overlap between physical uplink shared channels (PUSCH) and physical uplink control channels (PUCCH) carrying hybrid automatic repeat request acknowledgments (HARQ ACK) is unclear when priorities are different, leading to uncertainties in multiplexing sidelink HARQ-ACK on PUSCH.
Innovation Solution
A method and apparatus for determining target transmission and priority definition by establishing a mapping relationship between sidelink (SL) and Uu priorities, allowing for collision or multiplexing conditions to be resolved by considering the Uu and SL priorities of overlapping resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the PUSCH and PUCCH carrying HARQ ACK overlap with different Uu priorities, then the HARQ ACK cannot be multiplexed on the PUSCH, but this leads to unclear definitions and uncertainties in sidelink HARQ-ACK multiplexing
Solution Approach 1:
The patent applies parameter changes by introducing a mapping relationship between SL priority and Uu priority. Specifically, different SL priority values (e.g., SL priority 1, 2, 3) are mapped to corresponding Uu priority values, transforming the priority parameter system to enable consistent multiplexing decisions across different interface types.
Solution Approach 2:
The patent uses Uu priority as an intermediary to bridge the gap between SL and Uu interface priority systems. By converting SL priority to Uu priority through a mapping relationship, the system creates a common reference framework that resolves the uncertainty in multiplexing decisions when resources overlap.
2Ease of operation
If the definitions of SL priority and Uu priority are different, then the priority comparison becomes ambiguous, but establishing a mapping relationship increases system complexity
Solution Approach 1:
The patent achieves universality by creating a unified priority comparison mechanism that works across both SL and Uu interfaces. The mapping relationship enables the system to use a single reference framework (Uu priority) for making multiplexing decisions regardless of the original priority type, simplifying the overall operation.
Solution Approach 2:
The patent applies preliminary action by pre-establishing the mapping relationship between SL priority and Uu priority before actual multiplexing decisions are needed. This advance configuration of the mapping table or relationship allows for quick and unambiguous priority comparisons when resource overlaps occur, without requiring complex real-time calculations.
Data Source
AI summary
A transmission method and apparatus, a priority definition method and apparatus, and a terminal are provided. The transmission method applicable to a communication device includes: determining target transmission when a target resource and a first resource at least partially overlap, meet a collision condition, or meet a multiplexing condition, where the target resource is related to a sidelink SL, the target resource has or does not have a first Uu priority, the first resource has or does not have a second Uu priority, and the first Uu priority of the target resource includes a Uu priority of the target resource and/or a Uu priority of at least part of information corresponding to the target resource.