Path Handover Feedback for Late Command and Condition Failures
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Solution Overview
Problem
Handover failures in communication systems occur due to late handover commands or unreasonable handover conditions configured by the network device, leading to wireless link failures.
Innovation Solution
A terminal determines a preset condition before executing a path handover and sends auxiliary information to the network device if the condition is satisfied, allowing the network device to select a new target node or update the handover condition, thereby avoiding path handover failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network device sends a handover command to the terminal, then the terminal can be handed over to a target cell, but handover failure can occur due to the handover command being sent too late
Solution Approach 1:
The terminal proactively sends auxiliary information (measurement results, handover preference indications) to the network device before the handover command is issued. This preliminary action enables the network device to make informed handover decisions earlier, reducing the time delay in handover command delivery and preventing handover failures due to late command transmission.
2Reliability
If the network device configures handover conditions for the terminal, then handover can be triggered based on these conditions, but handover failure can occur due to unreasonable handover conditions
Solution Approach 1:
The terminal provides feedback to the network device by sending auxiliary information including measurement results and handover preference indications. This feedback loop enables the network device to optimize handover condition configurations based on actual terminal measurements and preferences, making the conditions more reasonable and reliable while reducing unnecessary complexity from overly conservative or inappropriate configurations.
3Reliability
If the terminal sends auxiliary information to the network device before handover, then handover reliability can be improved, but communication overhead increases
Solution Approach 1:
The terminal extracts and sends only the most critical auxiliary information (key measurement results and handover preference indications) to the network device, rather than transmitting all available data. This selective extraction reduces communication overhead while still providing sufficient information for the network device to improve handover reliability through better-informed decisions.
Data Source
AI summary
A path handover method is provided. The method includes: in response to an execution of a path handover to a target node being triggered, determining whether a preset condition is satisfied; and in response to the preset condition being satisfied, sending first indication information to a network device, the first indication information being used for indicating auxiliary information for handover to the target node.