Time recovery in a time sensitive network

    公开(公告)号:US12120212B2

    公开(公告)日:2024-10-15

    申请号:US17706939

    申请日:2022-03-29

    CPC classification number: H04L7/0016 H04J3/06 H04J3/0673

    Abstract: Time recovery techniques are described. A method comprises 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, 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, where the third clock is not synchronized with the first and second clocks, and recovering the network time using a regression model and the redundant time from the third clock.

    Physics-Aware Detector for Protocol Spoofing Attacks in Time Sensitive Networks

    公开(公告)号:US20240223603A1

    公开(公告)日:2024-07-04

    申请号:US18090410

    申请日:2022-12-28

    CPC classification number: H04L63/1466 G06F1/12

    Abstract: Techniques include receiving a message with time information from a clock leader by a clock follower in a time-synchronized network (TSN), the time information to synchronize a clock to a network time for the TSN, retrieving an actual time offset value for the message, the actual time offset value to comprise a value between an actual sending time and an actual receiving time of the message, retrieving an estimated time offset value for the message, the estimated time offset value to comprise a value between an estimated sending time and an estimated receiving time of the message, the estimated time offset value generated using a physics-aware model of the TSN and a clock adjustment value for the clock based on the time information, and determining whether the time information for the message was modified to cause the clock to desynchronize based on difference information. Other embodiments are described and claimed.

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