Clock Port Attribute Recovery via Signal Fail Monitoring
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Solution Overview
Problem
In communication networks, clock port status may be incorrectly determined due to the inability to recover clock port attributes, leading to incorrect clock source selection and disrupted clock synchronization.
Innovation Solution
A method and system for recovering clock port attributes by setting a port dataset signal fail attribute to a first value when no messages are received within a timeout interval, and switching it to a second value when recovery conditions are met, ensuring accurate clock tracking relationships.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the port dataset signal fail attribute is set to indicate message loss, then clock port status correctness is improved, but automatic recovery capability deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the network device continuously monitors clock messages (sync, follow-up, delay response) and automatically adjusts the port dataset signal fail attribute based on reception status. When N messages are received within a timeout interval, the attribute is automatically recovered from indicating message loss to normal state, eliminating the need for manual intervention while maintaining attribute correctness.
Solution Approach 2:
The system enables self-service by allowing the clock port to automatically detect message loss conditions and self-correct by monitoring subsequent message receptions. The port dataset signal fail attribute is automatically set and cleared based on message reception patterns, making the system self-diagnosing and self-healing without external administrative input.
2Measurement precision
If manual recovery of clock port attributes is required, then attribute accuracy is improved, but administrative workload increases
Solution Approach 1:
The network device performs self-service by automatically monitoring clock message receptions and adjusting the port dataset signal fail attribute without administrative input. The system detects when N clock messages are received within the timeout interval and automatically clears the message loss indication, eliminating manual recovery operations while maintaining attribute accuracy.
Solution Approach 2:
The patent establishes preliminary automated monitoring mechanisms that continuously track clock message receptions. By having the system proactively monitor and automatically recover attributes based on predefined criteria (receiving N messages within timeout interval), it prevents the need for administrative intervention before problems escalate.
3Speed
If the timeout interval for message reception is shortened, then message loss detection speed is improved, but false positive rate increases
Solution Approach 1:
The patent employs dynamic thresholds for message loss detection by requiring N messages within a timeout interval rather than a fixed time-based criterion. This dynamic approach allows the system to adapt to varying network conditions and message rates, speeding up detection when messages are genuinely lost while reducing false positives when message rates naturally fluctuate.
Solution Approach 2:
The system changes detection parameters by using a configurable combination of message count (N) and timeout interval rather than a single fixed parameter. This allows optimization of the balance between detection speed and accuracy by adjusting how many messages must be received within what time period, adapting to different network conditions and requirements.
Data Source
AI summary
A clock port attribute recovery method includes a network device setting a value of a port attribute of a clock port of the network device to a first value based on the clock port not receiving any one of three types of clock messages: N synchronization messages, follow-up messages, and delay response messages within a timeout interval, where the first value indicates that a message is lost on the clock port. Based on a case that a recovery condition is met, the network device sets the value of the port attribute of the clock port to a second value, where the second value indicates that a status of the clock port is that the message is not lost.