Primary Time Server Backup Power for Network Coordination
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Solution Overview
Problem
In coordinated timing networks, when the time code receivers of a primary time server fail, the system currently transitions to a secondary time server, which is not desirable in all scenarios, necessitating a solution to maintain the primary time server's role even in the absence of its external time source.
Innovation Solution
The primary time server receives necessary timing information from a secondary time server, allowing it to continue as the current time server, even if its own time code receivers fail, through the use of STP message commands like Secondary PPS Information and Set Primary Reference Time, enabling it to synchronize with a defined time standard.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the primary time server loses its primary power source, then the server must leave the network, but this causes disruption to timing integrity and configuration changes
Solution Approach 1:
The patent applies beforehand cushioning by providing an uninterruptible power supply (UPS) as a secondary power source that activates before complete power failure occurs. The UPS cushiones the power loss by providing backup power, enabling the primary time server to maintain operation and notify the network of its impending departure rather than abruptly leaving, thus preserving timing integrity and preventing configuration disruptions
2Ease of operation
If the primary time server remains in the network despite power source failure, then configuration stability is maintained, but the server requires additional backup power infrastructure
Solution Approach 1:
The patent applies the intermediary principle by introducing a UPS as a mediating power supply system between the primary power source and the time server. The UPS serves as an intermediate buffer that manages power transitions, providing clean backup power when needed and allowing the server to operate continuously without direct exposure to power source failures, thus maintaining configuration stability while adding controlled complexity
3Loss of information
If the server notifies other servers before leaving, then network coordination is improved, but the server must have sufficient power to complete the notification process
Solution Approach 1:
The patent applies preliminary action by having the primary time server send a departure notification message to all network servers before actually leaving the network. This preliminary notification allows other servers to prepare for the server's departure, maintain coordination information, and adjust their timing operations accordingly. The UPS ensures sufficient power is available to complete this preliminary notification action before power is fully depleted
Data Source
AI summary
A server of a network of servers determines that its power source is failing. In response, the server communicates to one or more other servers of this network that it is leaving the network. This communication is powered by another power source.