Uplink PUSCH Scheduling With Overlap-Aware PDCCH Timing
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Solution Overview
Problem
Existing wireless communication systems face challenges in improving scheduling flexibility when multiple DCI schedules multiple PUSCHs, leading to inefficiencies and hardware complexity.
Innovation Solution
A method and device for wireless communication that allows for the reception and transmission of multiple PDCCH and PUSCH signals with flexible scheduling, including scenarios where one PDCCH can end later than another based on overlap conditions and coresetPoolIndex associations, supporting various transmission types and reducing hardware complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple DCI schedule multiple PUSCHs with flexible timing, then scheduling flexibility is improved, but system complexity increases
Solution Approach 1:
The patent implements dynamic timing relationships between PDCCH and PUSCH by allowing the PDCCH to end at different symbol positions (first symbol or second symbol) based on whether PUSCHs overlap in time. This dynamic adjustment enables the system to adapt to different scheduling scenarios without requiring complex static configuration, resolving the contradiction between flexibility and complexity.
Solution Approach 2:
The patent changes the timing parameter of PDCCH termination symbol based on the overlap condition of scheduled PUSCHs. When PUSCHs overlap, the PDCCH ends at the second symbol; when they don't overlap, it ends at the first symbol. This parameter change approach provides scheduling flexibility while maintaining manageable system complexity through clear conditional logic.
2Reliability
If PDCCH ends later to accommodate overlapping PUSCHs, then transmission reliability is improved, but transmission delay increases
Solution Approach 1:
The patent dynamically adjusts the PDCCH ending symbol position based on the actual overlap condition of PUSCHs. The system only extends the PDCCH to the second symbol when PUSCH overlap is detected, otherwise it ends at the first symbol. This dynamic approach ensures reliable scheduling information delivery while minimizing unnecessary transmission delay.
Solution Approach 2:
The patent determines the appropriate PDCCH ending symbol in advance based on the scheduled PUSCH timing information. By预先 determining whether PUSCHs will overlap and setting the PDCCH end position accordingly, the system ensures reliable information delivery without introducing unnecessary delay.
Data Source
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AI summary
Disclosed in the present application are a method and device used in a node for wireless communication. A first receiver receives a first PDCCH and a second PDCCH; and a first transmitter sends a first PUSCH and a second PUSCH, the first PDCCH and the second PDCCH respectively scheduling the first PUSCH and the second PUSCH, wherein the first PDCCH ends at a first symbol, and the second PUSCH starts earlier than the end of the first PUSCH; and whether the second PDCCH can end later than the first symbol is related to whether the second PUSCH overlaps with the first PUSCH.