Time recovery in a time sensitive network

A computing-implemented method, comprising:

• establishing a data stream between a first device and a second device in a first network domain, the data stream comprising a plurality of switching nodes;
• receiving messages from the first device by the second device in the first network domain, the messages to comprise time information to synchronize a first clock for the first device and a second clock for the second device to a network time for the first network domain;
• determining the second clock is to recover the network time for the second device without new messages from the first device;
• retrieving a first set of timestamps previously stored for events in the first network domain using the network time from the second clock;
• retrieving a second set of timestamps previously stored for the events in the first network domain using a redundant time from a third clock, wherein the third clock is not synchronized with the first and second clocks;
• constructing a regression model based on the first and second set of timestamps;
• and
• recovering the network time of the first network domain using a redundant time from the third clock as input for the regression model to output a recovered network time for the second clock of the second device.

A non-transitory computer-readable storage device, storing instructions that when executed by processing circuitry of a manager of a time sensitive network (TSN), cause the manager to:

• receive messages from the first device by the second device in the first network domain, the messages to comprise time information to synchronize a first clock for the first device and a second clock for the second device to a network time for the first network domain;
• determine the second clock is to recover the network time for the second device without new messages from the first device;
• retrieve a first set of timestamps previously stored for events in the first network domain using the network time from the second clock;
• retrieve a second set of timestamps previously stored for the events in the first network domain using a redundant time from a third clock, wherein the third clock is not synchronized with the first and second clocks;
• construct a regression model based on the first and second set of timestamps;
• and
• recover the network time of the first network domain using a redundant time from the third:
• clock as input for the regression model to output a recovered network time for the second clock of the second device.