Target PUSCH Selection for UCI Multiplexing in Wireless Nodes
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Solution Overview
Problem
In wireless communication systems, clarifying which Physical Uplink Shared Channel (PUSCH) carries Uplink Control Information (UCI) is crucial, especially in scenarios with multiple PUSCHs, to enhance transmission performance and reliability, but existing methods lack clarity and efficiency.
Innovation Solution
A method where a target PUSCH is selected based on reference information such as coresetPoolIndex, MCS index, or frequency-domain resource allocation, ensuring consistent understanding and improved resource utilization across various wireless communication scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple PUSCHs are used for uplink transmission, then uplink transmission capacity is improved, but ambiguity arises regarding which PUSCH carries UCI
Solution Approach 1:
The patent introduces a PUCCH (Physical Uplink Control Channel) as an intermediary carrier to transport UCI information. The PUCCH carries indication information that specifies which PUSCH should be used for UCI multiplexing, thereby resolving the ambiguity without limiting the use of multiple PUSCHs for data transmission
Solution Approach 2:
The patent segments the control information transmission by separating UCI indication (carried on PUCCH) from data transmission (carried on PUSCH). This segmentation allows independent optimization: multiple PUSCHs can be used for data while the PUCCH provides clear identification for UCI multiplexing
2Productivity
If UCI multiplexing on PUSCH is implemented, then uplink control information transmission is improved, but transmission reliability decreases due to ambiguity
Solution Approach 1:
The patent employs feedback mechanisms where the PUCCH transmits indication information about the selected PUSCH for UCI multiplexing. This feedback ensures that the receiving end correctly identifies which PUSCH carries the UCI, maintaining high reliability while enabling efficient multiplexing
3Reliability
If clear specification of target PUSCH is provided, then transmission reliability is improved, but system complexity increases
Solution Approach 1:
The patent uses the existing PUCCH structure as a template for carrying indication information. Instead of creating a new complex identification mechanism, the system reuses the established PUCCH format and protocols, thereby ensuring reliable target PUSCH specification without significantly increasing system complexity
Data Source
AI summary
The present application provides a method and device in a node for wireless communications. A first receiver receives at least one signaling; a first transmitter transmits a first UCI on a target PUSCH, the target PUSCH is one of multiple PUSCHs; the target PUSCH depends on reference information corresponding to the multiple PUSCHs, and the reference information comprises at least one of a coresetPoolIndex, an MCS index, or a frequency-domain resource allocation; herein, each PUSCH among the multiple PUSCHs is scheduled by one of the at least one signaling.