CORESET Group Segmentation for Multi-TRP Beam Scheduling
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Solution Overview
Problem
Existing technologies face challenges in effectively supporting multiple transmission and reception points (TRPs) to provide efficient services to a terminal in a beam mechanism, especially when there is no ideal backhaul among TRPs and they are independently scheduled.
Innovation Solution
The method involves determining D control resource set (CORESET) groups in one bandwidth part (BWP), detecting control information in these CORESET groups, and performing channel transmission based on the detected information. This approach allows multiple TRPs to effectively serve a terminal in a beam mechanism by optimizing resource allocation and reducing blind detection complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple TRPs are used to serve one terminal in a beam mechanism, then communication robustness is enhanced, but device complexity increases due to independent scheduling and lack of ideal backhaul
Solution Approach 1:
The patent divides the control resource set into multiple CORESET groups, where each group is associated with a specific TRP. This segmentation allows the terminal to independently manage control resources from different TRPs, reducing the complexity of handling multiple TRPs simultaneously while maintaining communication robustness through diverse path utilization.
Solution Approach 2:
The patent introduces a mapping relationship between CORESET groups and TRPs as an intermediary mechanism. This mapping allows the system to coordinate multiple independently scheduled TRPs without requiring ideal backhaul, as the CORESET groups serve as intermediaries that organize and manage the control resources from different TRPs in a structured manner.
2Adaptability or versatility
If multiple TRPs independently schedule terminals without ideal backhaul, then adaptability is improved, but loss of information increases due to coordination challenges
Solution Approach 1:
The patent segments control information into different CORESET groups, with each group handled independently by specific TRPs. This segmentation enables each TRP to independently schedule terminals without requiring constant coordination through backhaul, thereby maintaining adaptability while reducing information loss through structured resource organization.
Solution Approach 2:
The patent applies local quality by allowing different CORESET groups to have different configurations and properties according to their associated TRPs. This enables each TRP to optimize its control resource allocation independently, improving adaptability while the overall system maintains coordination through the CORESET group structure, thus preventing information loss.
3Productivity
If D CORESET groups are determined in one BWP for multiple TRPs, then productivity is improved through better resource utilization, but device complexity increases due to monitoring multiple PDCCH candidates
Solution Approach 1:
The patent segments the monitoring of PDCCH candidates by associating them with specific CORESET groups. Instead of blindly searching all possible candidates across all TRPs, the terminal can focus its detection efforts on candidates within specific CORESET groups, thereby reducing blind detection complexity while maintaining high spectrum efficiency through effective utilization of multiple TRPs.
Solution Approach 2:
The patent applies preliminary action by pre-configuring the mapping relationships between CORESET groups and TRPs, and by pre-identifying which PDCCH candidates belong to which CORESET groups. This preliminary organization allows the terminal to efficiently monitor control information without having to perform exhaustive blind detection across all possible candidates, thus improving productivity while reducing device complexity.
Data Source
AI summary
Provided are information transmission method and apparatus. The information transmission method includes that: D control channel resource groups are determined, control information is detected in the D control channel resource groups, and transmission of a channel and/or signal is performed according to control information which is detected.