Uplink Control Information Transmission in PUSCH
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Solution Overview
Problem
In the New Radio (NR) mobile communication system, the transmission efficiency of uplink control information (UCI) is reduced due to the allocation of excessive time-frequency resources when using higher-order modulation modes, especially in poor channel conditions, and there is a lack of clarity on which Physical Uplink Shared Channel (PUSCH) to transmit UCI when multiple PUSCHs are present in a time slot.
Innovation Solution
A method is introduced to determine the transmission of UCI based on its actual code rate and a preset threshold, calculated using a predetermined code rate and beta value, ensuring that UCI is transmitted only when the actual code rate is greater than or equal to the threshold, thereby optimizing resource allocation and reducing implementation complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If higher-order modulation mode is used to transmit UCI, then transmission efficiency is improved, but reliability of UCI transmission deteriorates
Solution Approach 1:
The patent dynamically adjusts the modulation order parameter based on channel quality conditions. When channel quality is good, higher-order modulation modes (e.g., 64QAM, 256QAM) are used to improve transmission efficiency. When channel quality is poor, lower-order modulation modes (e.g., QPSK, 16QAM) are used to ensure transmission reliability. This parameter adaptation resolves the contradiction between efficiency and reliability.
2Productivity
If more time-frequency resources are allocated to transmit UCI with higher-order modulation mode, then transmission efficiency is improved, but device complexity and resource waste increase
Solution Approach 1:
The patent changes the modulation order parameter adaptively based on channel conditions and UCI payload size. By using appropriate modulation modes rather than always using higher-order modes, the system achieves efficient transmission without unnecessarily increasing device complexity or wasting time-frequency resources.
3Adaptability or versatility
If multiple PUSCHs are present in one time slot, then transmission flexibility is improved, but determination complexity of which PUSCH to transmit UCI increases
Solution Approach 1:
The patent establishes predetermined rules and criteria for selecting which PUSCH to use for UCI transmission when multiple PUSCHs are available in a time slot. The UE can determine the appropriate PUSCH based on pre-configured parameters such as PUSCH priority, resource allocation, or association with specific uplink data, thereby reducing determination complexity while maintaining transmission flexibility.
Data Source
AI summary
Provided are a transmission method, apparatus and system. The transmission method includes: in response to UCI being configured to be transmitted in a PUSCH, and the PUSCH does not have a UL-SCH, determining to transmit the UCI according to an actual code rate of the UCI and a preset threshold. The preset threshold is determined according to a predetermined code rate and a predetermined value β. In the embodiment of the present disclosure, when the UCI is transmitted based on a given modulation mode, the UCI is determined to be transmitted according to the actual code rate of the UCI and the preset threshold.