CORESET QCL Sharing for Lower RRC Signaling Overhead

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Solution Overview

Problem

Current mobile communication systems face high signaling overheads due to the need for frequent RRC signaling to configure and reconfigure QCL information for multiple CORESETs, especially with multiple antenna sets.

Innovation Solution

Implementing association relationship indication information to determine that multiple CORESETs share QCL information, reducing the need for individual QCL configuration by using a shared beam set associated with antenna sets.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If RRC signaling is used to configure QCL information for each CORESET individually, then beam indication accuracy is improved, but signaling overhead increases

Engineering Contradiction:

Improvebeam indication accuracyVSAvoidsignaling overhead

Core Design Contradiction:

Measurement precisionVSQuantity of substance

Solution Approach 1:

The patent merges the QCL information configuration for multiple CORESETs into a single shared configuration. Instead of configuring QCL information separately for each CORESET through individual RRC signaling, the system establishes a shared QCL information set that is common to multiple CORESETs, thereby reducing signaling overhead while maintaining beam indication accuracy.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The shared QCL information configuration serves multiple CORESETs simultaneously, making the configuration universal. This multi-functional approach allows a single QCL configuration to be applied across multiple control resource sets, eliminating the need for redundant individual configurations and reducing overall signaling overhead.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If RRC signaling is used for reconfiguration of candidate QCL information, then beam management flexibility is improved, but signaling overhead increases

Engineering Contradiction:

Improvebeam management flexibilityVSAvoidsignaling overhead

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The system introduces dynamic indication mechanisms that allow flexible beam management without requiring full RRC reconfiguration. Through MAC CE or other dynamic signaling, the system can switch between different QCL information sets associated with different antenna sets, providing adaptability while avoiding the overhead of complete RRC reconfiguration.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent segments the QCL information into different sets associated with different antenna sets. This segmentation allows the system to reconfigure only the necessary portion (the indicated antenna set's QCL information) rather than reconfiguring all QCL information through full RRC signaling, thus reducing overhead while maintaining flexibility.

Inventive Principle:

Principle #1Segmentation

3Adaptability or versatility

If multiple antenna sets are supported with separate QCL configuration, then system adaptability is improved, but device complexity increases

Engineering Contradiction:

Improvesystem adaptabilityVSAvoidconfiguration complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent combines multiple antenna set configurations into a unified shared QCL information structure. Instead of maintaining separate, independent QCL configurations for each antenna set, the system merges them into a shared configuration that can be selectively activated, reducing configuration complexity while preserving the ability to support multiple antenna sets.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The system introduces an intermediary indication mechanism (such as MAC CE) that mediates between the multiple antenna set configurations and the active configuration. This intermediary allows the system to switch between different antenna set QCL information without requiring complex direct reconfiguration of all parameters, simplifying the overall device complexity.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS12507248B2Wireless communication method and device

Publication Date: 2025.12.23 VIVO MOBILE COMM CO LTD

AI summary

A wireless communication method includes: generating association relationship indication information; and sending the association relationship indication information. The association relationship indication information is used to indicate that multiple first CORESETs have an association relationship, and the multiple first CORESETs share first QCL information. The association relationship indication information is further used to indicate that multiple second CORESETs have an association relationship, the multiple first CORESETs and the multiple second CORESETs have no association relationship, and the multiple second CORESETs share second QCL information.