Connection reestablishment method and relevant device
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Solution Overview
Problem
Communication interruptions occur due to handover failures in conditional handover processes, particularly in 5G systems, where dual connectivity architectures are employed, leading to inefficiencies in connection management.
Innovation Solution
A connection re-establishment method is implemented by a terminal to initiate re-establishment on either the source node or target node upon satisfying specific trigger conditions, such as timer expiration or handover failure, to minimize communication disruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conditional handover is implemented to improve handover flexibility, then handover adaptability is improved, but communication interruption increases due to handover failures
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple potential target nodes and their associated re-establishment parameters before handover is needed. When handover fails, the terminal can immediately utilize the pre-prepared re-establishment configuration without waiting for network reconfiguration, thus reducing communication interruption while maintaining handover flexibility.
2Reliability
If connection re-establishment is initiated on multiple nodes to improve connection reliability, then connection reliability is improved, but device complexity increases
Solution Approach 1:
The patent applies local quality by assigning different re-establishment configurations to different target nodes based on their specific characteristics and handover conditions. Each target node has its own optimized re-establishment parameters, allowing the terminal to select the most appropriate configuration locally rather than using a uniform complex mechanism across all nodes.
Solution Approach 2:
The network side performs preliminary actions by pre-configuring re-establishment parameters on multiple target nodes before handover failure occurs. This preparation eliminates the need for complex real-time decision-making at the terminal, as the selection and configuration are already determined in advance.
3Ease of operation
If handover failure handling is simplified to reduce device complexity, then ease of operation is improved, but communication interruption increases
Solution Approach 1:
The patent resolves this contradiction by having the network side perform preliminary configuration of re-establishment parameters on multiple target nodes before handover failure occurs. This advance preparation simplifies the terminal's operation to merely selecting and executing the pre-configured option, while simultaneously enabling rapid connection recovery without complex real-time processing.
Data Source
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AI summary
The present disclosure provides a connection re-establishment method and related device, the method including: performing a handover process; and initiating a connection re-establishment on the first node if a re-establishment trigger condition is satisfied by a terminal, wherein the first node includes at least one of a source node or a target node in the handover process.