5G Terminal Time Synchronization During Cell Handover
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Solution Overview
Problem
In 5G mobile networks, achieving time synchronization accuracy during cell handover in time-sensitive networks (TSN) is challenging, especially when terminal devices are moving and need to maintain synchronization with the new cell to ensure accurate data transmission.
Innovation Solution
A method for time synchronization determination involves a terminal device receiving a handover command from a first device, obtaining and determining the time synchronization information of a second device, which includes synchronization time, accuracy, and propagation delay compensation information, to ensure accurate time synchronization after handover.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device performs cell handover to a new cell, then the terminal device can maintain connection and mobility, but the time synchronization accuracy may deteriorate during the handover process
Solution Approach 1:
The patent applies preliminary action by obtaining time synchronization information of the target cell before the handover is completed. The terminal device receives the handover command containing synchronization information from the source cell, performs synchronization with the target cell in advance, and then completes the handover. This ensures that time synchronization accuracy is maintained throughout the handover process while connection reliability is preserved.
2Measurement precision
If the terminal device obtains time synchronization information from the handover command, then the time synchronization accuracy is improved, but the device complexity increases due to additional processing requirements
Solution Approach 1:
The patent uses the handover command as an intermediary to transmit time synchronization information from the source cell to the terminal device. Instead of requiring complex direct measurements and synchronization procedures with the target cell, the source cell provides the synchronization information through the handover command, simplifying the terminal device's processing while maintaining high synchronization accuracy.
Data Source
AI summary
A method for time synchronization determination and related products are provided. The method includes the following. A terminal device receives a handover command from a first device, where the first device is a device currently accessed by the terminal device, and the handover command indicates that the terminal device hands over from the first device to a second device. The terminal device obtains and determines time synchronization information of the second device.