Overlapping PUCCH Processing by UCI Priority and Start Time
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Solution Overview
Problem
In the New Radio (NR) system, User Equipment (UE) cannot send multiple Physical Uplink Control Channels (PUCCHs) simultaneously, leading to information transmission errors due to overlapping PUCCHs, which necessitate discarding or multiplexing UCI, causing inefficiencies.
Innovation Solution
A method for processing overlapping PUCCHs by determining a processing order based on the priorities and start times of uplink control information (UCI) carried by the PUCCHs, followed by a de-overlapping process to resolve overlaps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple PUCCHs are transmitted simultaneously, then communication efficiency is improved, but information transmission errors occur due to overlapping channels
Solution Approach 1:
The patent segments the overlapping PUCCH transmission problem by introducing a processing order mechanism. When PUCCHs overlap in time domain, the terminal determines a specific processing sequence based on UCI priority and start time, dividing the simultaneous transmission into sequential processing steps. This segmentation resolves the conflict between allowing multiple PUCCHs (for efficiency) and preventing errors (for reliability).
Solution Approach 2:
The patent applies preliminary action by determining the processing order of PUCCHs before actual transmission. The terminal calculates and establishes the processing sequence in advance based on UCI priority levels and start times, so that when overlapping occurs, the correct processing order is already determined. This preliminary determination prevents information transmission errors while maintaining the ability to transmit multiple PUCCHs efficiently.
2Reliability
If PUCCH discarding or UCI multiplexing is performed to resolve overlaps, then information transmission errors are reduced, but transmission efficiency deteriorates
Solution Approach 1:
The patent changes the parameter of PUCCH processing by introducing a priority-based processing order mechanism instead of simple discarding or multiplexing. By adjusting the processing sequence parameter based on UCI priority and start time, the system resolves overlaps without losing information or reducing efficiency. This parameter change allows the terminal to maintain all PUCCH transmissions while processing them in an optimized sequence.
3Reliability
If a processing order based on UCI priority and start time is implemented, then information transmission errors are reduced, but device complexity increases
Solution Approach 1:
The patent applies self-service by enabling the terminal to autonomously determine the processing order of overlapping PUCCHs using pre-defined rules based on UCI priority and start time. The terminal itself performs the ordering calculation and sequence determination without requiring complex network coordination or additional signaling. This self-service approach reduces the need for external control mechanisms while maintaining reliable error-free transmission.
Data Source
AI summary
A method for processing overlapping physical uplink control channels, a terminal and a network side device are provided. The method includes: when PUCCHs are overlapped, a terminal determining a processing order for the PUCCHs according to priorities of uplink control information (UCI) carried by the PUCCHs and/or start time of the PUCCHs; performing a de-overlapping process for the PUCCHs according to the processing order.