Uplink Time Quality Requests for Precise Network Time Synchronization
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Solution Overview
Problem
The stability of crystal oscillator frequency in network elements leads to errors in time maintenance, resulting in degraded transmission performance of delay-sensitive services due to misalignment with standard time, especially in devices with limited cost and structure.
Innovation Solution
A method and device for requesting and configuring time quality information using uplink messages such as Msg1, Msg3, MsgA, configured grant CG physical uplink shared channel PUSCH, and service request SR to align time quality across network elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If time quality information is sent periodically from network elements, then time synchronization is maintained, but transmission delay increases and time precision deteriorates
Solution Approach 1:
The terminal device autonomously determines whether time quality information needs updating by comparing its local time quality indicator with a threshold, and independently initiates requests for updated information. This self-service mechanism eliminates the need for periodic network-initiated updates, reducing transmission delay while maintaining time precision.
Solution Approach 2:
The system implements a feedback mechanism where the terminal device monitors its own time quality indicator and compares it against a threshold to determine when updates are needed. This feedback-driven approach ensures time precision is maintained only when necessary, reducing unnecessary transmissions and associated delays.
2Measurement precision
If the terminal frequently requests time quality information, then time synchronization accuracy improves, but uplink signaling overhead increases
Solution Approach 1:
The terminal device uses a feedback mechanism comparing its local time quality indicator with a threshold to determine when requests are necessary. This ensures time synchronization accuracy is maintained only when quality degrades, avoiding frequent unnecessary requests and reducing uplink signaling overhead.
Solution Approach 2:
The terminal autonomously monitors its own time quality and independently decides when to request updates, rather than following frequent network-initiated update cycles. This self-service approach maintains synchronization accuracy while minimizing unnecessary signaling.
3Measurement precision
If the terminal always maintains connection to request time updates, then time quality updates are timely received, but power consumption increases
Solution Approach 1:
The terminal device autonomously determines when time quality updates are needed by monitoring its local time quality indicator, and only initiates connection and update requests when necessary. This avoids continuous connection maintenance, reducing power consumption while ensuring updates are received timely when actually needed.
Solution Approach 2:
Instead of maintaining continuous connection, the terminal performs periodic checks of its time quality indicator and only connects to request updates when the indicator shows degradation. This periodic action maintains update timeliness while significantly reducing power consumption compared to continuous connection.
Data Source
AI summary
This application discloses a request information reporting method, an information configuration method, and a related device. The request information reporting method in embodiments of this application includes: obtaining, by a terminal, configuration information from a network device, where the configuration information includes information of time quality; and sending, by the terminal, time quality request information by using a target uplink message, where the target uplink message includes at least one of messages Msg1, Msg3, MsgA, configured grant CG physical uplink shared channel PUSCH, and service request SR.