RRC Reconfiguration Compliance Checks for Enhanced CPA/CPC Mobility

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Solution Overview

Problem

Existing wireless communication systems face challenges in performing compliance checks for enhanced conditional primary secondary cell (PSCell) addition (CPA) and conditional PSCell change (CPC) procedures, leading to inefficiencies and potential failures in mobility management.

Innovation Solution

The implementation of a user equipment (UE) and base station (BS) architecture that includes processors configured to perform compliance checks on RRC reconfiguration messages for enhanced CPA and CPC, transmitting failure information when necessary, and managing conditional handover procedures to ensure successful cell group transitions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If compliance check is performed on RRC reconfiguration message for enhanced CPA/CPC, then reliability of mobility management is improved, but processing time and complexity increase

Engineering Contradiction:

Improvereliability of mobility managementVSAvoidprocessing time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The compliance check is performed on the RRC reconfiguration message before executing the conditional handover procedure. This preliminary verification ensures that the mobility management parameters are valid and compliant with the network configuration before actual handover execution, preventing potential failures and ensuring reliable mobility management while containing processing time within the configuration phase.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If compliance check is performed on RRC reconfiguration message for enhanced CPA/CPC, then reliability of mobility management is improved, but device complexity increases

Engineering Contradiction:

Improvereliability of mobility managementVSAvoidcomplexity of compliance check mechanism

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The user equipment autonomously performs compliance check on the received RRC reconfiguration message and determines whether to execute the conditional handover based on the compliance result. This self-service mechanism eliminates the need for complex external verification systems or manual intervention, reducing overall system complexity while maintaining high reliability through automated validation.

Inventive Principle:

Principle #25Self-service

3Reliability

If failure information is transmitted upon compliance check failure, then reliability of mobility management is improved, but signaling overhead increases

Engineering Contradiction:

Improvereliability of mobility managementVSAvoidsignaling overhead

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The compliance check validation result is extracted and included as a specific field in the RRC reconfiguration message itself, rather than requiring separate failure information transmission. This integration allows the network to receive compliance status information directly during the normal handover signaling process, reducing additional signaling overhead while maintaining reliable failure notification.

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentUS20250274836A1Method and apparatus for compliance check in communication system

Publication Date: 2025.08.28 LENOVO (BEIJING) LTD

AI summary

Embodiments of the present disclosure relate to methods and apparatuses for compliance check in a communication system. According to some embodiments of the disclosure, a UE may: receive, from a BS, an RRC reconfiguration message for mobility; and transmit, to the BS, an RRC complete message in response to receiving the RRC reconfiguration message for mobility. The RRC reconfiguration message for mobility may be associated with an enhanced CPA or an enhanced CPC.