Network Device Data Transmission During UE Handover
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Solution Overview
Problem
Existing data transmission methods face challenges in handling concurrent data transmission processes, particularly when a user equipment (UE) moves from one network device to another, requiring efficient registration updating and data transfer across network areas.
Innovation Solution
A method and device for data transmission that involve a first network device receiving a registration request or updating request from a UE, acquiring UE context and data from a second network device, and sending a registration response, ensuring seamless data transfer by extracting and caching necessary information during the handover process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If small data is transmitted in the control plane through NAS message, then infrequent small data transmission is achieved, but bearer information cannot be efficiently managed during network handovers
Solution Approach 1:
The patent applies preliminary action by pre-establishing data bearers in the user plane before handover occurs. When a UE moves between network devices, the bearer information is already prepared and can be quickly transferred, eliminating the need for complex real-time bearer management during handover. This is achieved by setting up data bearers in advance through the user plane, allowing seamless data transmission continuity.
2Reliability
If bearer information is carried in control plane transmission, then data transmission is possible, but handover processes become complex and time-consuming
Solution Approach 1:
The patent introduces an intermediary mechanism by utilizing the user plane as a mediator for data transmission during handover. Instead of directly managing bearer information in the control plane, the system uses user plane resources to carry data, with the control plane only needing to establish basic connectivity. This intermediary approach decouples the complexity of bearer management from the handover process, reducing handover time while maintaining transmission reliability.
3Adaptability or versatility
If network handover is performed, then UE mobility is supported, but data transmission interruption may occur
Solution Approach 1:
The patent ensures continuity of useful action by maintaining active data bearers in the user plane that can seamlessly continue transmission during handover. The system keeps data transmission paths ready and active, so when a UE moves between network devices, the data flow continues without interruption. This is achieved by pre-configuring bearers that persist through handover events, eliminating gaps in data transmission while supporting UE mobility.
Data Source
AI summary
A method for data transmission includes that: a first network device receives a registration request message or a registration updating request message from a user equipment (UE); the first network device acquires UE context information and UE data from a second network device based on the registration request message or the registration updating request message; and the first network device sends a registration response message to the UE. A device for data transmission is also provided.