Terminal Device Access Control for Dual Connectivity
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Solution Overview
Problem
In dual connectivity scenarios, existing technologies face challenges in ensuring that terminal device access to a target primary secondary cell does not disrupt the service provided by dual connectivity, particularly during radio resource control connection reestablishment or transfer, leading to potential system errors due to lack of coordination between new master and secondary nodes.
Innovation Solution
The method involves terminating or suspending access to the target primary secondary cell when the terminal device satisfies specific trigger conditions during radio resource control connection reestablishment or transfer, ensuring no interface is formed between new master and secondary nodes, thereby maintaining dual connectivity functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device performs access to the target primary secondary cell when trigger condition is satisfied, then the access performance is improved, but the dual connectivity service may be affected when RRC connection reestablishment or transfer is occurring
Solution Approach 1:
The patent applies preliminary anti-action by having the terminal device check whether RRC connection reestablishment or transfer is occurring before accessing the target primary secondary cell. When such connection changes are detected, the device proactively suspends or terminates the access procedure to prevent service disruption, thereby preventing the harmful effect before it can occur.
Solution Approach 2:
The patent implements preliminary action by establishing a check mechanism that evaluates the RRC connection state prior to allowing access to the target primary secondary cell. This preliminary evaluation ensures that access procedures are only permitted when they will not interfere with ongoing RRC connection reestablishment or transfer operations.
2Speed
If the terminal device allows simultaneous access to target primary secondary cell during RRC connection reestablishment, then the access speed is improved, but the interface coordination between new master and secondary nodes fails
Solution Approach 1:
The patent prevents the harmful effect of interface coordination failure by implementing a preliminary check that detects when RRC connection reestablishment or transfer is in progress. When detected, the system suspends the access procedure to the target primary secondary cell, thereby preventing the scenario where multiple simultaneous connection changes would cause interface coordination failures between master and secondary nodes.
Data Source
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AI summary
Embodiments of the present invention provide an access control method, comprising: when a terminal device meets a condition for reestablishing or transferring a radio resource control connection, or when the terminal device is reestablishing or transferring a radio resource control connection, the terminal device terminating or suspending a currently executed process of accessing a target primary secondary cell; or when the terminal device meets a first trigger condition, skipping a pending process of accessing a target primary secondary cell. The embodiments of the present invention further provide another access control method, a terminal device, a base station, and a storage medium.