BSC User Plane Migration via Iur-g to A Interface
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Solution Overview
Problem
The existing method for migrating a user plane from an Iur-g interface to an A interface in 2G and 3G network handovers results in a long interruption of the user plane due to the base station controller (BSC) actively handling the entire handover process, leading to inefficiencies in resource management and potential errors.
Innovation Solution
A method where the BSC receives a migration commit notification from the radio network controller (RNC) through the Iur-g interface, allowing it to migrate the user plane to the A interface only after resource preparation is confirmed, thereby shortening the interruption duration and aligning message sequences with the core network's requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the BSC actively implements the whole process of handing over the user plane from the Iur-g interface to the A interface, then the handover procedure is completed, but the user plane experiences a long interruption
Solution Approach 1:
The core network performs resource preparation in advance by sending a notification message to the RNC indicating that resources have been prepared. This preliminary action allows the RNC to send the migration commit notification to the BSC without requiring the BSC to actively manage the entire handover process, thereby reducing user plane interruption time while ensuring handover completion.
2Productivity
If the BSC actively manages the entire handover process, then the handover is executed, but resource management coordination between BSC and RNC becomes complex
Solution Approach 1:
The invention extracts the resource preparation function from the BSC and assigns it to the core network. The core network prepares resources and notifies the RNC, which then communicates with the BSC. This separation simplifies the BSC's role to merely executing the handover based on the migration commit notification, reducing the complexity of resource management coordination between BSC and RNC while ensuring handover execution.
Data Source
AI summary
Embodiments of the present invention disclose a method for migrating a user plane from an Iur-g interface to an A interface and an apparatus. The method includes: receiving, by a BSC, a migration commit notification that is sent by an RNC through an Iur-g interface, where the migration commit notification is sent by the RNC according to a notification message of finishing preparing resources by the BSC, and the notification message of finishing preparing resources by the BSC is sent by a core network; and migrating, by the BSC, a user plane from the Iur-g interface to an A interface according to the migration commit notification. In this way, the interruption duration in a process of migrating the user plane from the Iur-g interface to the A interface may be shortened.