US 12,407,437 B2
Time source health monitoring support for network timing resiliency
Pilar Andres Maldonado, Aalborg (DK); Troels Emil Kolding, Klarup (DK); Thomas Haaning Jacobsen, Norresundby (DK); Devaki Chandramouli, Plano, TX (US); Rakash Sivasiva Ganesan, Unterhaching (DE); and Renato Barbosa Abreu, Aalborg (DK)
Assigned to NOKIA TECHNOLOGIES OY, Espoo (FI)
Filed by NOKIA TECHNOLOGIES OY, Espoo (FI)
Filed on Sep. 28, 2022, as Appl. No. 17/936,205.
Claims priority of provisional application 63/261,796, filed on Sep. 29, 2021.
Prior Publication US 2023/0100543 A1, Mar. 30, 2023
Int. Cl. H04J 3/06 (2006.01); G01S 19/25 (2010.01)
CPC H04J 3/0641 (2013.01) [G01S 19/256 (2013.01); H04J 3/0652 (2013.01); H04J 3/0667 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus for a core network, the apparatus comprising:
at least one processor; and
at least one memory including computer program code configured to, when executed by the at least one processor, cause the apparatus at least to perform:
establishing time synchronization within a network, the network comprising at least one node using a time source, and the network comprising the core network;
obtaining an indication regarding a health of the time source, wherein the indication of the health of the time source indicates at least one of a degradation or a failure of the time source monitored by the at least one node, wherein the indication is based on at least one of GNSS (Global Navigation Satellite System) reports or PTP (Packet Transfer Protocol) reports received by the core network of the network from the at least one node;
and
determining, based on the indication, an action to be taken in response to the at least one of the degradation or the failure of the time source for the at least one node, wherein the action to be taken comprises instructing the at least one node to leverage either hold over functionality or a backup time source.