Single PDCCH Multi-Carrier Scheduling via Cell Set Association
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Solution Overview
Problem
Existing wireless communication systems, such as those supporting R17 and earlier versions of 5G New Radio (NR), do not allow for simultaneous scheduling of multiple carriers by a single Physical Downlink Control Channel (PDCCH), limiting system performance and adaptability to diverse application scenarios.
Innovation Solution
A method and apparatus for wireless communication that enables a single PDCCH to simultaneously schedule multiple carriers by using a signaling mechanism that associates M1 first-type cell sets with M1 second-type cell sets, allowing for efficient cross-carrier scheduling and reducing complexity in blind detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single PDCCH schedules multiple carriers simultaneously, then system performance and transmission efficiency are improved, but device complexity and blind detection complexity increase
Solution Approach 1:
The patent segments the cell sets into first-type cell sets and second-type cell sets, where first-type cell sets are associated with downlink carriers and second-type cell sets are associated with uplink carriers. This segmentation allows the terminal to separately manage and detect PDCCH candidates for different carrier types, reducing overall blind detection complexity while enabling multi-carrier scheduling.
Solution Approach 2:
The patent introduces a first field in the downlink control information that serves as an intermediary indicator to identify which first-type cell set is being scheduled. This intermediary field allows the terminal to efficiently identify and process scheduled carriers without exhaustive blind detection across all possible carriers, thus improving transmission efficiency while controlling complexity.
2Adaptability or versatility
If cross-carrier scheduling is implemented to improve system adaptability, then versatility is improved, but signaling overhead and processing complexity increase
Solution Approach 1:
The patent creates a universal cell set association mechanism where first-type cell sets and second-type cell sets can be flexibly configured and associated. This universal framework allows the system to adapt to different carrier configurations and scheduling scenarios while using a consistent processing approach, thereby improving versatility without proportionally increasing complexity.
Data Source
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AI summary
The present application discloses a method and apparatus for wireless communication. A node firstly receives a first information block, and the first information block is configured to determine M1 first-type cell sets and then receive the first signaling; the M1 first-type cell sets are respectively associated with M1 second-type cell sets; the first signaling comprises at least a first field and a second field; the first field in the first signaling indicates "1", and the second field in the second signaling is used for indicating a first cell set from the M1 first-type cell sets; or the first field in the first signaling indicates "0", and the second field in the second signaling is used for indicating a second cell set from the M1 second-type cell sets; any serving cell in the second cell set is a serving cell in the first cell set. The present application improves the relationship between uplink and downlink carriers when a single DCI schedules a plurality of carriers to improve the overall performance.