Uplink Control Information Transmission via PUSCH Selection
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Solution Overview
Problem
In wireless communication systems, particularly in 5G, determining the appropriate Physical Uplink Shared Channel (PUSCH) for transmitting uplink control information (UCI) from multiple overlapping PUSCHs poses challenges in processing capability and downlink data transmission delay, as existing methods do not effectively manage the time overlap between PUSCH and Physical Uplink Control Channel (PUCCH).
Innovation Solution
The user equipment determines a PUSCH for transmitting UCI based on a set condition that includes a Time Difference threshold between the start and end times of downlink data, ensuring that the selected PUSCH overlaps with PUCCH, thereby optimizing processing capability and minimizing downlink data transmission delay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If user equipment transmits UCI on multiple overlapping PUSCHs, then the reliability of UCI transmission is improved, but the processing capability requirements and downlink data transmission delay increase
Solution Approach 1:
The patent changes the parameter of time difference threshold to determine which PUSCH should carry UCI. By comparing the time difference between PUSCH start time and downlink data end time against a threshold, the system selects the appropriate PUSCH, thereby resolving the contradiction between transmission reliability and delay without requiring simultaneous transmission on multiple PUSCHs
2Ease of operation
If user equipment selects PUSCH improperly for UCI transmission, then higher processing capacity requirements are imposed, but if selected properly, processing capability challenges are avoided
Solution Approach 1:
The patent introduces a time difference threshold parameter that simplifies the PUSCH selection process. Instead of complex multi-PUSCH coordination, the user equipment only needs to compare the time difference against the threshold to determine the appropriate PUSCH, significantly reducing processing capacity requirements while maintaining proper UCI transmission
Data Source
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AI summary
The present application discloses an uplink control information transmission method and device. The method includes: determining, by user equipment, a physical uplink control channel (PUCCH) corresponding to uplink control information (UCI); and transmitting, by the user equipment, the UCI on a first PUSCH in a first physical uplink shared channel (PUSCH) set; wherein every PUSCH contained in the first PUSCH set overlaps with the PUCCH in time. In this way, the challenge to the processing capability of the user equipment caused by transmitting the uplink control information on the PUSCHs can be effectively avoided, and meanwhile, the downlink data transmission performance can be ensured.