Clock Source Selection Using Sync Offset Recovery Detection
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Solution Overview
Problem
In 5G networks, network elements face inefficiencies in operation and maintenance due to the inability to automatically select a clock source with higher quality after a failure, requiring manual intervention when a higher quality clock source recovers.
Innovation Solution
A method and apparatus for a network device to automatically select a higher quality clock source by monitoring synchronization offset data through a port in a failed state, determining the recovery of the clock input signal, and using it as a reference for selection, thereby improving maintenance efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the network element automatically detects synchronization offset data to determine clock signal recovery, then the operation and maintenance efficiency is improved, but the device complexity increases
Solution Approach 1:
The network element performs self-detection of synchronization offset data and automatic determination of clock signal recovery status. The system monitors itself without external intervention, automatically switching between clock sources based on detected synchronization quality, thereby improving operational efficiency while maintaining manageable complexity through automated self-service mechanisms
Solution Approach 2:
The network element continuously monitors synchronization offset data and uses this feedback to automatically determine whether the clock input signal has recovered. Based on the feedback from synchronization quality measurements, the system dynamically adjusts clock source selection, creating a closed-loop control system that improves efficiency through automated decision-making
2Reliability
If the network element continuously monitors synchronization offset data to detect clock signal recovery, then the reliability is improved, but the use of energy increases
Solution Approach 1:
The network element performs periodic monitoring of synchronization offset data at predetermined intervals rather than continuous monitoring. This periodic action maintains reliable detection of clock signal recovery while reducing energy consumption by keeping the monitoring mechanism dormant between measurement intervals, thus balancing reliability with energy efficiency
Data Source
AI summary
A method for selecting a clock source includes a first network device that obtains synchronization offset data between the first network device and a second network device through a first port in a clock synchronization failed state. The first network device determines, based on the synchronization offset data, whether to refer to, during clock source selection, clock information received by the first port.