Uplink Control Information Mapping in User Terminals
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Solution Overview
Problem
In future radio communication systems, the variable transmission timing of uplink control information (UCI) with uplink data using the PUSCH poses a risk of deteriorating communication quality, as existing processing methods are not adaptable to changing transmission conditions.
Innovation Solution
The user terminal employs rate matching processing for uplink data, determining a mapping pattern for UCI based on the number of HARQ-ACK bits, selecting between puncturing and rate matching processing to optimize coding and minimize PAPR and IMD, thereby improving communication quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If variable transmission timing is applied to UCI and uplink data using PUSCH, then scheduling flexibility is improved, but communication quality deteriorates due to incompatible processing methods
Solution Approach 1:
The patent applies dynamics by making the transmission processing method adaptive to variable transmission timing conditions. The base station determines whether to apply puncturing or rate matching processing based on the actual transmission timing of UCI and uplink data, allowing the system to dynamically adjust processing methods to maintain communication quality while supporting flexible scheduling.
Solution Approach 2:
The patent changes the processing parameter from fixed to variable based on transmission timing conditions. By switching between puncturing and rate matching processing methods depending on whether UCI and uplink data have variable transmission timing, the system optimizes communication quality while maintaining scheduling flexibility.
2Reliability
If puncturing processing is applied to uplink data, then UCI transmission reliability is improved, but data transmission efficiency deteriorates
Solution Approach 1:
The patent applies local quality by selectively applying puncturing processing only to specific resource elements where UCI is transmitted, rather than uniformly processing all uplink data. This allows UCI to be transmitted reliably on designated resources while preserving data transmission efficiency on other resources.
Solution Approach 2:
The patent segments the uplink data transmission into two parts: resources allocated for UCI transmission (subject to puncturing) and resources for data transmission (subject to rate matching or normal processing). This segmentation allows optimized handling of each type of information with appropriate processing methods.
3Productivity
If rate matching processing is applied to uplink data, then data transmission efficiency is improved, but UCI transmission reliability deteriorates
Solution Approach 1:
The patent applies local quality by applying rate matching processing selectively to uplink data resources that do not overlap with UCI transmission resources. This ensures that data transmission efficiency is maintained on non-UCI resources while UCI transmission reliability is preserved on its designated resources through puncturing or dedicated resource allocation.
4Object-generated harmful factors
If DFT-s-OFDM waveform is used, then PAPR is reduced, but system versatility deteriorates due to limited waveform options
Solution Approach 1:
The patent applies universality by making the PUSCH capable of supporting multiple transmission scenarios with variable timing configurations. The same PUSCH structure can accommodate different UCI types (ACK/NACK, CSI, SR) and different timing relationships, providing multi-functionality without requiring multiple specialized waveforms or channels.
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3A~3B
AI summary
In order to prevent the communication quality from deteriorating, also in the case of transmitting uplink data and uplink control information using an uplink shared channel in the future radio communication system, one aspect of a user terminal of the present invention has a transmitting section that transmits uplink data and uplink control information, and a control section that determines a mapping pattern for the uplink control information, while selecting at least one of puncturing processing and rate matching processing, based on at least one of the number of bits of a receipt conformation signal included in the uplink control information, an instruction from a base station and a type of the uplink control information, in the case of multiplexing the uplink data and the uplink control information into an uplink shared channel to transmit.