Uplink Control Information Multiplexing in Unlicensed Spectrum
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Solution Overview
Problem
There is an urgent technical problem to be solved regarding how a terminal device performs uplink transmission when a conflict occurs between the Physical Uplink Shared Channel (PUSCH) and the Physical Uplink Control Channel (PUCCH) that are to be transmitted on an unlicensed frequency spectrum.
Innovation Solution
The method involves determining, based on first Downlink Control Information (DCI), the PUSCHs to be transmitted and transmitting uplink control information carried in the PUCCH when the PUSCHs overlap the PUCCH in the time domain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the terminal device transmits both PUSCH and PUCCH simultaneously, then the data transmission efficiency is improved, but the transmission reliability deteriorates due to conflicts between PUSCH and PUCCH
Solution Approach 1:
The patent extracts the uplink control information from the PUCCH and multiplexes it into the PUSCH for transmission. This separates the conflicting transmission functions by consolidating control information into the data channel, eliminating the PUCCH transmission and resolving the conflict between PUSCH and PUCCH while maintaining both data and control information transmission
Solution Approach 2:
The patent merges the uplink control information with the uplink data transmission by multiplexing the control information into the PUSCH. This combining approach allows both data and control information to be transmitted through a single channel, improving transmission reliability by avoiding conflicts while maintaining productivity
2Reliability
If the terminal device prioritizes PUCCH transmission, then the uplink control information transmission reliability is improved, but the data transmission efficiency deteriorates due to PUSCH transmission conflicts
Solution Approach 1:
The patent combines the uplink control information with the PUSCH transmission, ensuring that control information is transmitted reliably through the data channel. This merging eliminates the need for separate PUCCH transmission, maintaining control information reliability while preserving data transmission efficiency
Solution Approach 2:
The PUSCH is given multi-functionality by serving both as a data transmission channel and a control information transmission channel. This universal approach allows the single channel to fulfill both functions, improving data transmission efficiency while maintaining control information transmission reliability
Data Source
AI summary
The present disclosure discloses a method and apparatus for transmitting uplink control information, a device, and a storage medium, relating to the field of mobile communication. The method includes: determining, based on first Downlink Control Information (DCI), m Physical Uplink Shared Channels (PUSCHs) to be transmitted, where m is a positive integer; and transmitting, when the m PUSCHs overlap at least one Physical Uplink Control Channel (PUCCH) in a time domain, uplink control information carried in the at least one PUCCH.