Secondary Cell Addition Feedback for CPAC Status Recognition
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Solution Overview
Problem
The network cannot recognize the success or failure of the conditional PSCell addition/change procedure (CPAC), making it difficult to optimize this process.
Innovation Solution
A terminal (UE) is equipped with a control unit that executes addition or change procedures for secondary cells and a transmitting unit that sends messages to the network indicating the success or failure of these procedures, including the type of procedure and execution information, allowing the network to distinguish between master node and secondary node-initiated actions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal executes addition or change procedure for secondary cell, then the secondary cell configuration is updated, but the network cannot recognize the success or failure of the procedure
Solution Approach 1:
The terminal feeds back execution status information to the network through uplink messages. When the addition or change procedure succeeds or fails, the terminal transmits a message containing the type of procedure and execution information (indicating whether initiated by master node or secondary node) to enable the network to recognize the procedure outcome and optimize future CPAC operations.
2Productivity
If the terminal transmits detailed execution information to the network, then the network can optimize CPAC, but the signaling overhead increases
Solution Approach 1:
The patent extracts only the essential execution status information (success/failure state and initiation source) that the network needs for optimization, rather than transmitting complete procedure logs. This selective information extraction reduces signaling overhead while maintaining the network's ability to optimize CPAC procedures.
Data Source
AI summary
A terminal controls execution of an addition or change procedure for a secondary cell, and transmits a message to a network when the addition or change procedure succeeds or fails, the message including therein a type of the addition or change procedure, and execution information indicating that the addition or change procedure is initiated by a master node or a secondary node.