NR Unlicensed Spectrum BWP and CORESET Resource Configuration
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Solution Overview
Problem
In NR unlicensed spectrum, the position of the Initial Active Downlink BWP is not equal to the position of the CORESET of the first type of PDCCH, making it difficult for user equipment to determine the resource configuration of both in existing technologies.
Innovation Solution
A method and device that determine the frequency domain position of the PRB with the minimum index of the synchronization signal block to establish the position of the Initial Active Downlink BWP and the CORESET of the first type of PDCCH, using offsets and mapping relationships to configure the number of PRBs and bitmap-based positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the position of Initial Active Downlink BWP is set equal to the position of CORESET of the first type of PDCCH, then the user equipment can directly obtain the position information, but this approach cannot accommodate the NR unlicensed spectrum where BWP bandwidth (close to 20 MHz) differs from CORESET bandwidth (less than 20 MHz)
Solution Approach 1:
The patent segments the resource configuration determination into two independent parts: BWP position determination and CORESET position determination. Instead of equating them, the patent introduces separate determination methods using different parameters (offsets, bitmaps, or independent configurations), allowing each to be optimized independently for the NR unlicensed spectrum requirements while maintaining ease of operation through standardized procedures.
2Adaptability or versatility
If the BWP bandwidth is fixed at close to 20 MHz to match Wi-Fi channel, then the bandwidth compatibility is improved, but the position cannot be equal to CORESET position which has less than 20 MHz bandwidth
Solution Approach 1:
The patent introduces intermediary parameters (offsets and bitmaps) that mediate between the BWP position and CORESET position. These intermediaries allow the system to maintain the 20 MHz BWP bandwidth for Wi-Fi compatibility while precisely controlling the CORESET position within the BWP, resolving the position alignment issue without sacrificing bandwidth compatibility.
3Adaptability or versatility
If separate position determination methods are introduced for BWP and CORESET, then the adaptability to NR unlicensed spectrum is improved, but the complexity of resource configuration increases
Solution Approach 1:
The patent implements dynamic configurability where the determination method can adapt to different scenarios. The system can dynamically select among multiple determination approaches (offset-based, bitmap-based, or independent configuration) depending on the specific deployment requirements, maintaining adaptability while allowing the complexity to be adjusted based on actual needs rather than being fixed at maximum.
Data Source
AI summary
A resource information determining method and device, a storage medium, and a user equipment. The method includes: determining a frequency domain position of a PRB with a minimum index of a synchronization signal block; determining a position of an initial active downlink BWP according to the frequency domain position of the PRB with the minimum index of the synchronization signal block; determining a position of a CORESET of a first type of PDCCH, wherein the position of the CORESET comprises the frequency domain position of the PRB with the minimum index of the CORESET and the number of the PRBs of the CORESET, or a position of a bitmap-based PRB of the CORESET. By means of the solution of the present invention, the user equipment can obtain resource configuration of the initial active downlink BWP and resource configuration information of the first type of PDCCH in an NR unlicensed spectrum.