Dual Connectivity Mobility Configuration for CHO and CPA/CPC Reliability
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Solution Overview
Problem
In 5G systems, dual connectivity (DC) terminal devices cannot simultaneously improve the reliability of master cell group (MCG) and secondary cell group (SCG) mobility processes due to the inability to configure both conditional handover (CHO) and conditional primary secondary cell (PSCell) addition (CPA) or change (CPC).
Innovation Solution
Configuring both MCG and SCG mobility management configurations for DC terminal devices, allowing them to trigger CHO and/or CPA or CPC based on preconfigured conditions, thereby enhancing the reliability of both mobility processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If only CHO or CPA/CPC is configured for DC terminal devices, then the configuration complexity is reduced, but the reliability of mobility processes cannot be simultaneously improved for both MCG and SCG
Solution Approach 1:
The mobility management configuration is segmented into separate MCG mobility configuration and SCG mobility configuration. The network device can independently configure CHO parameters for MCG and CPA/CPC parameters for SCG, allowing each mobility process to be optimized separately while coexisting in the same terminal device.
Solution Approach 2:
The terminal device is designed with multi-functionality to support both CHO and CPA/CPC operations simultaneously. The device can execute MCG mobility based on CHO triggers and SCG mobility based on CPA/CPC triggers, making it universally capable of handling multiple mobility management modes without functional conflicts.
2Reliability
If both CHO and CPA/CPC are configured for DC terminal devices, then the reliability of both MCG and SCG mobility processes is improved, but the device complexity increases
Solution Approach 1:
The configuration is divided into distinct MCG mobility configuration parameters and SCG mobility configuration parameters. This segmentation allows the terminal device to process and manage each set of parameters independently, reducing the cognitive complexity despite supporting multiple mobility types simultaneously.
Solution Approach 2:
The network device performs preliminary configuration by pre-configuring both MCG and SCG mobility parameters before mobility events occur. This preliminary setup establishes clear trigger conditions and target cell configurations in advance, simplifying the real-time decision-making process at the terminal device when mobility events are triggered.
Data Source
AI summary
A method for configuring mobility management includes: sending configuration information of condition-triggered cell management and a type of the condition-triggered cell management to a terminal device.