Radio Resource Mapping for Priority Multiplexing and CSI Feedback
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Solution Overview
Problem
In wireless communication systems, particularly in the New Radio (NR) system, there is a challenge in optimizing low-priority transmissions without compromising high-priority transmissions, and ensuring efficient resource utilization when conflicts arise between different priorities, while also enhancing Channel State Information (CSI) feedback precision.
Innovation Solution
A method for multiplexing different priorities of data on the same channel by associating time-frequency resource sizes with respective priorities, and improving CSI feedback precision through precise channel and interference estimation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If different priorities of data are multiplexed on the same channel, then resource utilization is improved, but transmission reliability of high-priority data may deteriorate
Solution Approach 1:
The patent segments the time-frequency resources within a radio resource block by creating a resource map that distinguishes between first resources (for high-priority data) and second resources (for low-priority data). This segmentation allows different priority data to be multiplexed on the same channel while ensuring high-priority data has dedicated protected resources, thus resolving the contradiction between resource utilization and transmission reliability.
2Reliability
If low-priority transmission resources are increased, then performance loss of low-priority data is reduced, but resource waste increases when high-priority transmission occurs
Solution Approach 1:
The patent implements dynamic resource allocation where the second resources allocated for low-priority data are configured based on the actual channel conditions and transmission requirements. The resource map dynamically adjusts which time-frequency resources are assigned to low-priority data, ensuring that low-priority transmissions receive adequate resources when needed while avoiding resource waste when high-priority transmissions occur, thus resolving the contradiction between transmission performance and resource efficiency.
3Measurement precision
If channel and interference estimation precision is improved, then CSI feedback accuracy is enhanced, but feedback overhead increases
Solution Approach 1:
The patent applies local quality by performing channel and interference estimation specifically on the first resources (high-priority data resources) rather than across all resources. This localized estimation approach provides sufficient accuracy for CSI feedback while significantly reducing the amount of feedback information required, thus resolving the contradiction between measurement precision and feedback overhead.
Data Source
AI summary
The present disclosure provides a method and a device in a node for wireless communications. A first node receives a first signaling and a second signaling; and transmits a first signal in a first radio resource block. The first signaling is used to determine the first radio resource block; the first signal carries a first bit block and a second bit block, of which the first bit block is associated with the first signaling, and a third bit block is associated with the second signaling, the third bit block being used to generate the second bit block; a number of bits comprised in the first bit block is used to determine a first resource size, a second resource size is used to determine a size of time-frequency resources occupied by the first signal. The method proposed herein improves resource utilization ratio of the wireless system.