Application-Layer Measurement Reporting After Secondary Cell Group Release
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Solution Overview
Problem
In multi-radio dual connectivity (MR-DC) scenarios, existing methods for application layer measurement are inefficient and prone to signaling overheads, leading to incorrect understanding of commands by user equipment (UE) in communicating with multiple base stations.
Innovation Solution
A method for application layer measurement that involves explicit indication or autonomous determination by the UE to release or adjust application layer measurements based on secondary cell group changes, reducing signaling overheads and ensuring accurate reporting to the primary access network device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the terminal device releases the secondary cell group in MR-DC scenario, then the device complexity is reduced, but the application layer measurement result collection efficiency deteriorates due to lack of explicit release indication
Solution Approach 1:
The patent introduces feedback mechanisms where the terminal device monitors whether the access network device has received the application layer measurement result. When the secondary cell group is released, the terminal device determines whether to retain the measurement result based on feedback about reception status, ensuring efficient collection while avoiding unnecessary retention.
Solution Approach 2:
The terminal device autonomously determines whether to retain or delete the application layer measurement result based on the secondary cell group release status and reception feedback, without requiring explicit release indication from the network. This self-service approach improves efficiency while maintaining correctness.
2Loss of information
If the terminal device retains application layer measurement result after secondary cell group release, then the measurement data is preserved for potential reporting, but signaling overhead increases and command understanding becomes ambiguous
Solution Approach 1:
The terminal device uses feedback about whether the measurement result was successfully received to determine retention. If received, the result can be deleted; if not received, it may be retained for retransmission, optimizing the balance between information preservation and signaling reduction.
Solution Approach 2:
The retention status of the application layer measurement result is dynamically changed based on the secondary cell group release status and reception feedback, allowing the system to adapt between retaining and deleting the measurement data as conditions change.
3Quantity of substance
If the terminal device autonomously determines measurement release without explicit indication, then the signaling overhead is reduced, but the reliability of command execution deteriorates
Solution Approach 1:
The terminal device's autonomous determination is guided by feedback about measurement result reception status. This feedback-based autonomous decision-making ensures that the device only deletes measurement results when confident they were received, maintaining reliability while reducing signaling overhead.
Solution Approach 2:
The terminal device performs self-service by autonomously managing the application layer measurement result retention based on observable conditions (secondary cell group release and reception feedback), reducing the need for explicit network commands while maintaining execution reliability.
Data Source
AI summary
An application layer measurement method includes receiving, by a terminal device, a first message from a first access network device. The first message carries first indication information, and the first indication information indicates the terminal device to release a secondary cell group. The method also includes, in response to receiving second indication information, releasing, by the terminal device, first application layer measurement; or in response to the terminal device not receiving the second indication information, the first message not indicating the terminal device to change an access network device to which a first application layer measurement result is reported, and the access network device to which the first application layer measurement result is reported being a second access network device before the first message is received, releasing the first application layer measurement or adjusting the access network device to which the first application layer measurement result is reported.