US 12,075,343 B2
Methods, systems, and computer readable media for network slice selection function recovery
Amarnath Jayaramachar, Bangalore (IN); and Kawal Sapra, Bangalore (IN)
Assigned to ORACLE INTERNATIONAL CORPORATION, Redwood Shores, CA (US)
Filed by Oracle International Corporation, Redwood Shores, CA (US)
Filed on Jan. 10, 2022, as Appl. No. 17/572,559.
Prior Publication US 2023/0224804 A1, Jul. 13, 2023
Int. Cl. H04W 48/18 (2009.01); H04W 8/02 (2009.01); H04W 28/02 (2009.01); H04W 48/16 (2009.01)
CPC H04W 48/18 (2013.01) [H04W 8/02 (2013.01); H04W 28/0284 (2013.01); H04W 28/0289 (2013.01); H04W 48/16 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for network slice selection function (NSSF) recovery, the method comprising:
creating, at an NSSF, a plurality of subscriptions for a plurality of access and mobility management functions (AMFs) and storing availability information for each AMF;
determining, at the NSSF, that the NSSF failed to process at least one service update message from at least one of the AMFs, and in response, sending a notification request message to each of the AMFs, the notification request message requesting each AMF to update availability information for the AMF;
receiving, at the NSSF, updated availability information from each of the AMFs; and
distributing, at the NSSF, the updated availability information to each of the AMFs.