Uplink Channel Scheduling for Overlapping PUCCH and PUSCH Priorities
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in performing wireless signal transmission and reception, particularly in handling simultaneous physical uplink control channel (PUCCH) and physical uplink shared channel (PUSCH) transmissions with different priorities.
Innovation Solution
A method and apparatus for enabling simultaneous transmission of PUCCH and PUSCH with different priorities by allowing their overlap without multiplexing uplink control information (UCI) and resolving overlaps based on priority differences, using inter-band carrier aggregation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If PUCCH and PUSCH transmissions with different priorities are handled using traditional multiplexing methods, then channel resource utilization is improved, but transmission efficiency and priority handling capability deteriorate
Solution Approach 1:
The patent segments the uplink transmission by separating PUCCH and PUSCH channels with different priorities into distinct transmission paths. High-priority PUCCH transmissions are handled independently from lower-priority PUSCH transmissions, allowing each to be processed according to its specific requirements without interference from multiplexing operations.
Solution Approach 2:
Instead of the traditional approach of multiplexing control information into data channels to improve resource utilization, the patent inverts the approach by allowing simultaneous separate transmission of PUCCH and PUSCH. This inversion prioritizes transmission efficiency and priority handling over resource consolidation, particularly in inter-band carrier aggregation scenarios.
2Adaptability or versatility
If UCI is multiplexed into PUSCH to consolidate channel resources, then resource utilization is improved, but the ability to handle different priority levels independently deteriorates
Solution Approach 1:
The patent segments the transmission procedure by maintaining separate handling paths for high-priority PUCCH and lower-priority PUSCH. This segmentation allows the system to preserve priority differentiation capability while simplifying the overall transmission procedure by avoiding complex multiplexing operations between channels of different priorities.
Solution Approach 2:
The patent applies local quality by allowing simultaneous transmission of PUCCH and PUSCH specifically in inter-band carrier aggregation scenarios, while potentially maintaining multiplexing in other scenarios. This localized application of separate transmission optimizes priority handling where it is most needed without unnecessarily complicating other transmission procedures.
3Productivity
If simultaneous PUCCH-PUSCH transmission is enabled without multiplexing, then transmission efficiency is improved, but resource utilization deteriorates
Solution Approach 1:
The patent implements a dynamic transmission strategy where the system adaptively chooses between simultaneous separate transmission and multiplexing based on the specific scenario. In inter-band carrier aggregation with different priority requirements, simultaneous transmission is enabled for high efficiency. In other scenarios, multiplexing may be applied for better resource utilization. This dynamic approach optimizes the trade-off between efficiency and resource utilization.
Solution Approach 2:
The patent changes the transmission parameter from mandatory multiplexing to conditional simultaneous transmission. By modifying this key parameter based on priority requirements and carrier aggregation configurations, the system achieves improved transmission efficiency where needed while maintaining reasonable resource utilization through selective application rather than universal enforcement.
Data Source
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AI summary
A UE according to an embodiment of the present disclosure may receive a parameter enabling simultaneous transmission of overlapping PUCCH-PUSCH having different priorities in the same PUCCH cell group, and may perform uplink (UL) transmission related to a PUCCH and one or at least two PUSCHs overlapping the PUCCH. The one or at least two PUSCHs may include at least one of a first PUSCH on a first band to which a cell of the PUCCH belongs and a second PUSCH on a second band. The UE may perform the UL transmission without multiplexing the UCI of the PUCCH onto the second PUSCH on the basis of the first band and the second band being different from each other.