Terminal Handover Reporting for Connection Status Indication
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Solution Overview
Problem
In mobile communication, handover processes often result in handover failures due to challenges in indicating the success or failure of connection establishment between a terminal device and a target network device to the source network device, especially when multiple handovers occur.
Innovation Solution
A method and system for handover reporting, where a terminal device sends first indication information upon successful connection establishment with a target network device and second indication information upon failure, allowing the source network device to be informed of the connection status, including the identity of the target network device and reasons for failure, to facilitate handover management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device sends handover indication information to the source network device, then the source network device can make informed decisions about handover management, but the signaling overhead and system complexity increase
Solution Approach 1:
The patent extracts only the essential handover status information (success/failure indication and target cell identity) from the complete handover process, sending only this critical subset to the source network device. This selective extraction reduces signaling overhead while maintaining the ability to make informed handover decisions, resolving the contradiction between reliability and complexity.
Solution Approach 2:
The terminal device autonomously determines and reports handover status without requiring complex centralized control or additional network infrastructure. The device self-evaluates connection status with target cells and independently generates indication information, simplifying the overall system architecture while ensuring reliable handover management.
2Adaptability or versatility
If the terminal device maintains connection with source base station during handover to enable multiple handovers, then handover flexibility improves, but the difficulty of indicating connection status to source network device increases
Solution Approach 1:
The patent segments the handover process into distinct reportable events: successful connection establishment with target cells and failed connection attempts. By dividing complex multi-handover scenarios into discrete, identifiable status segments, the terminal can clearly indicate connection status to the source network device even while maintaining simultaneous connections, thus resolving the contradiction between flexibility and indication difficulty.
Solution Approach 2:
The patent introduces standardized indication information as an intermediary mechanism that translates complex multi-connection status into simplified reports for the source network device. This intermediary layer handles the complexity of tracking multiple handovers while presenting clear, manageable status information to the source, resolving the contradiction between adaptability and measurement difficulty.
Data Source
AI summary
Method for handover report and a terminal device are provided. In the method for handover report, the terminal device sends first indication information when connection establishment between the terminal device and the first target network device is successful, the first indication information is for indicating to a source network device that connection establishment between the terminal device and the first target network device is successful; and/or the terminal device sends a second indication information when connection establishment between the terminal device and the first target network device fails, where the second indication information is for indicating to the source network device that connection establishment between the terminal device and the first target network device fails.