Master Node Handover Processing for Direct Data Forwarding
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Solution Overview
Problem
In the handover process of communication systems, especially in LTE and 5G networks, the lack of direct data forwarding support between Secondary Nodes (SN) and target nodes leads to system performance deterioration, as existing standards only allow Master Nodes (MN) to notify the Core Network about direct data forwarding capabilities, not enabling direct data forwarding between SN and target nodes.
Innovation Solution
An information processing method where the Master Node (MN) initiates a request to determine if the Secondary Node (SN) supports direct data forwarding with a target node, and based on the response, performs corresponding handover processing, including allocating indirect data forwarding if direct is not supported, to ensure seamless data transmission across different handover scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If direct data forwarding is only supported between MN and target node, then the handover process can be implemented with existing standards, but system performance deteriorates due to inability to perform direct data forwarding between SN and target node
Solution Approach 1:
The patent segments the data forwarding capability into two independent paths: one between MN and target node (existing standard support) and another between SN and target node (new capability). By checking SN's direct data forwarding capability separately and establishing independent forwarding paths, the system achieves both standard compatibility and enhanced performance through selective use of direct forwarding when available.
2Ease of operation
If each node decides individually whether direct or indirect data forwarding is performed, then flexibility is improved, but system performance deteriorates due to lack of coordinated decision-making
Solution Approach 1:
The patent implements a feedback mechanism where SN first declares its direct data forwarding capability to MN, then MN makes the final routing decision based on this feedback and overall system state. This coordinated approach ensures both flexibility (MN can choose either direct or indirect path) and performance (direct forwarding is utilized when available), avoiding the pitfalls of completely autonomous node decisions.
Data Source
AI summary
Provided in the embodiments are an information processing method, an information processing device, an apparatus, and a computer-readable storage medium. The information processing method includes: obtaining first information in the case that a handover process has been initiated for a UE in a DC state, the first information being used to indicate whether an SN supports direct data forwarding between the SN and a target node; and performing corresponding handover processing in accordance with the first information.