Uplink Control Information Repetition Configuration Selection
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Solution Overview
Problem
In future radio communication systems like NR, the transmission of uplink control information (UCI) using both the Physical Uplink Control Channel (PUCCH) and Physical Uplink Shared Channel (PUSCH) at overlapping timings can lead to decreased communication throughput due to mismatched repetition numbers, affecting the expected repetition transmission effects.
Innovation Solution
A user terminal is designed with a transmitting section that transmits UCI using PUSCH when PUCCH and PUSCH timings overlap, and a control section that determines the appropriate repetition transmission configuration for either PUCCH or PUSCH based on specific conditions to ensure accurate repetition of UCI.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If UCI is piggybacked to PUSCH when PUCCH and PUSCH repetition numbers differ, then UCI transmission can occur on PUSCH, but the expected repetition transmission effect is not achieved and communication throughput decreases
Solution Approach 1:
The patent implements dynamic selection of repetition configuration by the control section. When PUCCH and PUSCH transmission timings overlap, the system dynamically determines whether to apply PUCCH repetition configuration or PUSCH repetition configuration based on current transmission conditions, rather than using a fixed approach. This dynamic adaptation ensures that the appropriate repetition number is applied to maintain communication throughput while enabling flexible UCI transmission on PUSCH.
2Reliability
If PUCCH repetition configuration is used for UCI on PUSCH, then UCI repetition can be achieved, but it conflicts with PUSCH repetition configuration and causes transmission timing mismatches
Solution Approach 1:
The control section acts as an intermediary between PUCCH and PUSCH repetition configurations. It receives both configuration types and intelligently selects which one to apply based on whether PUCCH and PUSCH transmissions overlap. This intermediary function resolves the conflict between the two configurations by applying the appropriate one, thereby maintaining UCI repetition reliability while avoiding the complexity of managing both configurations simultaneously.
3Productivity
If PUSCH repetition configuration is used for UCI transmission, then PUSCH transmission efficiency is maintained, but UCI may not achieve the expected repetition effect when PUCCH repetition was intended
Solution Approach 1:
The system dynamically adjusts the repetition configuration applied to UCI based on real-time transmission conditions. When PUCCH and PUSCH do not overlap, PUSCH repetition configuration is used to maintain transmission efficiency. When they overlap, the system switches to PUCCH repetition configuration to ensure UCI repetition effect. This dynamic switching mechanism, controlled by the control section, resolves the contradiction between maintaining PUSCH efficiency and achieving UCI repetition reliability.
Data Source
AI summary
A user terminal according to one aspect of the present disclosure includes a transmitting section that transmits, when a transmission timing of uplink control information (UCI) using a physical uplink control channel (PUCCH) overlaps with a transmission timing of a physical uplink shared channel (PUSCH), the UCI using the PUSCH, and a control section that controls which of a repetition transmission configuration of the PUCCH and a repetition transmission configuration of the PUSCH is to be used to determine the number of times of repetition transmission of the PUSCH including the UCI. According to one aspect of the present disclosure, a UCI repetition configuration can be appropriately determined.