PUCCH Multiplexing for Overlapping Uplink Control Transmission
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Solution Overview
Problem
In the new radio (NR) communication system, overlapping physical uplink control channels (PUCCHs) lead to the transmission of only the PUCCH with higher priority, potentially causing latency and unnecessary retransmissions due to the prioritization of certain HARQ-ACK codebooks.
Innovation Solution
A method and apparatus that select a third PUCCH from a set to multiplex first and second uplink information, such as HARQ-ACK codebooks, ensuring simultaneous transmission of multiple PUCCHs by considering priority, resource usage, and processing time requirements, thereby improving reliability and reducing latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If only the PUCCH with higher priority is transmitted when two PUCCHs overlap in the time domain, then the transmission complexity is reduced, but the reliability of data transmission deteriorates and unnecessary retransmissions occur
Solution Approach 1:
The patent combines multiple overlapping PUCCH transmissions into a single consolidated PUCCH transmission. When multiple PUCCHs overlap in the time domain, the terminal multiplexes the uplink information from all overlapping PUCCHs and transmits them together in one PUCCH, ensuring that all HARQ-ACK codebooks are transmitted simultaneously without requiring separate transmissions for each PUCCH.
Solution Approach 2:
The patent makes the PUCCH transmission mechanism universal by enabling it to handle multiple uplink information types simultaneously. The PUCCH is designed to carry not only the highest priority information but also to multiplex and transmit multiple HARQ-ACK codebooks from different PUCCHs, making the transmission system more versatile and capable of handling complex overlapping scenarios.
2Device complexity
If only the PUCCH with higher priority is transmitted when two PUCCHs overlap, then the transmission process is simplified, but latency increases due to unnecessary retransmissions
Solution Approach 1:
The patent merges multiple overlapping PUCCH transmissions into a single consolidated transmission event. By multiplexing all uplink information from overlapping PUCCHs and transmitting them together, the system eliminates the need for sequential transmissions and retransmissions, thereby reducing the overall time loss and latency while maintaining transmission reliability.
3Reliability
If multiple PUCCHs are transmitted simultaneously by selecting a third PUCCH from a set, then data transmission reliability is improved, but the device complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring PUCCH sets with different characteristics (first PUCCH set for highest/lowest priority, second PUCCH set for minimum/maximum time domain resource, third PUCCH set for simultaneous transmission). Before actual transmission occurs, the terminal is prepared with these pre-defined sets and selection criteria, enabling rapid and systematic PUCCH selection without complex real-time decision-making processes.
Solution Approach 2:
The patent utilizes parameter changes by selecting the third PUCCH based on configurable parameters such as priority levels, time domain resource occupation, and network device instructions. The system dynamically adjusts the selection criteria and PUCCH characteristics based on the specific transmission scenario, allowing flexible adaptation to different reliability requirements without increasing fundamental system complexity.
Data Source
AI summary
The present application relates to the technical field of communications, and provides an uplink data transmission method and apparatus, a terminal, and a storage medium. The method comprises: if a first physical uplink control channel (PUCCH) and a second PUCCH to be transmitted overlap in a time domain, selecting a third PUCCH from a PUCCH set; transmitting first uplink information in wherein first PUCCH and second uplink information in wherein second PUCCH in the third PUCCH; and transmitting the first uplink information and the second uplink information to a network device by means of the third PUCCH. Both first uplink transmission data and second uplink transmission data are transmitted in the third PUCCH, so that the first uplink transmission data and the second uplink transmission data are subjected to multiplex transmission, thereby improving the reliability of data transmission, reducing time delay, and avoiding unnecessary retransmission.