US 12,457,052 B2
Relative time error information distribution in precision time protocol network
Gábor Kovács, Dunakeszi (HU); Stefano Ruffini, Rome (IT); Riccardo Rimarchi, Hässelby (SE); and Mikael Johansson, Solna (SE)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Appl. No. 18/043,326
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Aug. 31, 2021, PCT No. PCT/SE2021/050845
§ 371(c)(1), (2) Date Feb. 27, 2023,
PCT Pub. No. WO2022/045958, PCT Pub. Date Mar. 3, 2022.
Claims priority of provisional application 63/072,841, filed on Aug. 31, 2020.
Prior Publication US 2023/0283392 A1, Sep. 7, 2023
Int. Cl. H04J 3/06 (2006.01); H04L 7/00 (2006.01)
CPC H04J 3/0667 (2013.01) [H04L 7/0016 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method for relative time error (TE) information distribution in a telecommunication network using a precision time protocol (PTP), the method being performed in a gateway device in a telecommunication network having hierarchical segments and comprising:
receiving TE information from a telecom grandmaster (T-GM) of the hierarchical segments;
preserving a total TE information of the received TE information;
resetting an accumulated path TE of the received TE information; and
outputting an indication of the reset accumulated path TE and the preserved total TE information to a sub-segment of the hierarchical segments.