Terminal Device UCI Prioritization for 5G NR Conflict Resolution
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Solution Overview
Problem
In 5G NR communications, the simultaneous reporting of multiple uplink control information (UCI) pieces by terminal devices to access network devices can lead to conflicts, resulting in failed data transmissions and compromised service requirements.
Innovation Solution
The terminal device prioritizes and sends only the highest-priority UCI pieces to the access network device, determining priorities based on factors such as subcarrier spacing, time length, and information type, to prevent conflicts and ensure successful data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the terminal device reports all N pieces of UCI to the access network device, then the completeness of information transmission is improved, but a UCI reporting conflict occurs and the reporting success rate deteriorates
Solution Approach 1:
The patent extracts and transmits only the most critical UCI pieces (M pieces with highest priorities) from the set of N pieces, separating essential information from less urgent information. This extraction approach prevents reporting conflicts while ensuring that the most important control information is successfully transmitted to the access network device.
Solution Approach 2:
The patent changes the parameter of information selection by introducing priority levels and selecting UCI pieces based on these priorities. Instead of transmitting all N pieces uniformly, the system transforms the transmission parameter to selectively transmit M pieces (where M < N) based on their priority values, thereby resolving the conflict between complete transmission and successful reporting.
2Reliability
If the terminal device sends M pieces of UCI with highest priorities, then the UCI reporting conflict is prevented and reporting success rate is improved, but the completeness of information transmission deteriorates
Solution Approach 1:
The patent applies local quality by assigning different priority levels to different UCI pieces based on their importance and characteristics. Each UCI piece is evaluated and assigned a priority level, allowing the system to selectively transmit M pieces with the highest local quality (priority) values. This ensures that critical information is transmitted successfully while accepting that some less critical information may be omitted.
3Adaptability or versatility
If multiple types of UCI are reported simultaneously, then the service requirements for different services are improved, but the complexity of UCI management increases
Solution Approach 1:
The patent segments the UCI management process into distinct steps: determining N pieces of UCI that need to be sent, assigning priorities to each piece based on service requirements and information type, and selecting M pieces with the highest priorities for transmission. This segmentation simplifies the management of multiple UCI types by providing a systematic framework that handles diversity through structured prioritization rather than complex simultaneous management.
Data Source
AI summary
Example information transmission methods, and apparatus are described. One example information transmission method includes determining resources for carrying N pieces of uplink control information (UCI) that partly overlap or completely overlap in time domain. The N pieces of UCI comprise at least one piece of beam channel quality information and at least one of a piece of channel state information or an acknowledgement (ACK)/a negative acknowledgement (NACK). A priority of the beam channel quality information is higher than a priority of the channel state information. A priority of the beam channel quality information is lower than a priority of the ACK/NACK.