SBFD PRG Granularity for Downlink Channel Estimation
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Solution Overview
Problem
In the New Radio (NR) system, the precoding resource block group (PRG) designed based on the DL BWP is not applicable in subband full duplex (SBFD) scenarios, affecting channel estimation accuracy.
Innovation Solution
A method and apparatus for determining and indicating PRG granularity in SBFD scenarios, allowing user equipment to adapt PRG granularity based on configuration or indication information, improving channel estimation accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If PRG is designed based on DL BWP size, then the PRG design is simple and unified, but it becomes inapplicable in SBFD scenarios where DL BWP is divided into multiple DL subbands, affecting channel estimation accuracy
Solution Approach 1:
The patent divides the DL BWP into multiple DL subbands and designs separate PRG configurations for each subband. This segmentation allows the PRG to adapt to the specific characteristics of each subband in SBFD scenarios, making the PRG design applicable to divided frequency resources while maintaining accurate channel estimation for each segment
Solution Approach 2:
The patent enables different PRG granularities to be applied to different DL subbands based on their specific conditions. Each subband can have its own PRG configuration optimized for local channel characteristics, rather than using a unified PRG design for the entire DL BWP, thereby improving channel estimation accuracy in each local region
2Productivity
If PRG granularity is fixed based on DL BWP, then the configuration is simple, but it cannot adapt to multiple DL subbands in SBFD mode, reducing resource utilization efficiency
Solution Approach 1:
The patent introduces dynamic PRG granularity configuration where the PRG size can be adjusted based on the specific SBFD scenario and channel conditions. The network can dynamically indicate different PRG granularities for different DL subbands, allowing the system to adapt to varying resource requirements while maintaining manageable configuration complexity through standardized indication mechanisms
Data Source
AI summary
A method for determining a precoding resource block group (PRG), a method for indicating a precoding resource block group (PRG), and a user equipment are provided. The method for determining a precoding resource block group (PRG) includes: receiving, by a user equipment, first information, where the first information includes at least one of configuration information or indication information that is used for determining a PRG granularity; and determining, by the user equipment, a PRG granularity of at least one downlink (DL) subband in a subband full duplex (SBFD) mode based on the first information.