US 12,218,813 B2
Cross-network time-alignment characterization for scheduled traffic
Marcio Juliato, Portland, OR (US); Javier Perez-Ramirez, North Plains, OR (US); Mikhail Galeev, Beaverton, OR (US); Manoj Sastry, Portland, OR (US); Dave Cavalcanti, Portland, OR (US); Christopher Gutierrez, Hillsboro, OR (US); Shabbir Ahmed, Hillsboro, OR (US); and Vuk Lesi, Cornelius, OR (US)
Assigned to Intel Corporation, Santa Clara, CA (US)
Filed by Intel Corporation, Santa Clara, CA (US)
Filed on Jun. 29, 2023, as Appl. No. 18/215,936.
Prior Publication US 2025/0007802 A1, Jan. 2, 2025
Int. Cl. H04L 43/0817 (2022.01); H04L 9/40 (2022.01); H04L 43/067 (2022.01)
CPC H04L 43/0817 (2013.01) [H04L 43/067 (2013.01); H04L 63/1416 (2013.01); H04L 63/1425 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
receiving a diagnostic message in a time-synchronized network (TSN) by a diagnostic stream consumer of the TSN, the diagnostic message to comprise a set of alignment-check packets (ACPs) for a diagnostic stream producer, the set of ACPs to include a reference ACP, the reference ACP comprising diagnostic information associated with the diagnostic stream producer, the diagnostic information comprising a node identifier for the diagnostic stream producer, an ACP sequence number, and an authentication code for the diagnostic stream producer;
receiving a first subset of ACPs from the set of ACPs in a first time window;
receiving a second subset of ACPs from the set of ACPs in a second time window, the second subset of ACPs to include at least the reference ACP;
determining an amount of desynchronization time for the diagnostic message based on a number of ACPs in the second subset of ACPs and a defined size for each ACP in the number of ACPs; and
generating a security alert when the desynchronization time exceeds a defined threshold.