RAN Node Interface Synchronization for LTE Handover
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Solution Overview
Problem
Current LTE/SAE network handover methods are inefficient due to reliance on static configuration of interface information, leading to manual errors, resource wastage, and increased delays, particularly in determining whether an X2 interface is available for handover.
Innovation Solution
Implement an interface information synchronization method that dynamically updates and shares S1 and X2 interface information between RAN nodes, allowing for accurate and quick selection of the proper interface for handover based on available connections, reducing the need for manual configuration and minimizing futile operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If static configuration of interface information is used, then device complexity is reduced, but handover efficiency deteriorates due to manual errors and inability to reflect real-time interface availability
Solution Approach 1:
The patent transforms the static configuration approach into a dynamic one by enabling RAN nodes to automatically obtain and update interface information (S1 and X2 interfaces) in real-time. This allows the system to adapt to changing network conditions without manual intervention, thereby improving handover efficiency while managing complexity through automated processes.
Solution Approach 2:
The patent implements self-service by enabling RAN nodes to autonomously acquire and maintain interface information without requiring manual configuration. The nodes automatically query and update their interface information databases, eliminating manual errors and reducing the operational complexity associated with static configuration management.
2Reliability
If X2 interface handover is attempted without verifying interface availability, then handover speed is improved, but reliability deteriorates due to futile operations when the interface is unavailable
Solution Approach 1:
The patent applies preliminary action by requiring RAN nodes to verify interface availability before initiating handover operations. The source RAN node checks whether the X2 interface is available and whether the target RAN node supports X2 handover in advance, preventing futile operations and ensuring handover reliability while minimizing delays through efficient pre-checks.
3Ease of operation
If manual configuration of interface information is performed, then ease of operation is reduced, but manufacturing precision is improved through controlled configuration
Solution Approach 1:
The patent enables RAN nodes to automatically obtain and maintain accurate interface information through self-service mechanisms. Nodes autonomously query the network to acquire up-to-date interface availability information, eliminating manual configuration efforts while ensuring information accuracy through automated validation and real-time updates.
Data Source
AI summary
A synchronization method, a communication handover method, a radio network, and a RAN node are disclosed. The interface information synchronization method includes determining whether a condition for initiating interface information update is fulfilled. Information about the S1 interface between the RAN node and the core network node, is sent. In addition, or alternatively, information about the X2 interface between the RAN node and the neighboring RAN node is sent to the neighboring RAN node if the condition for initiating interface information update fulfilled.