US 12,484,104 B2
Handling core network connection failure
Praveen Kumar Alur Shivaswamy, Bangalore (IN); Sridhar Bhaskaran, Bangalore (IN); Rohan Harihara Iyer, Bangalore (IN); and Girish Manjunath, Bangalore (IN)
Assigned to RAKUTEN SYMPHONY, INC., Tokyo (JP)
Appl. No. 18/015,598
Filed by Rakuten Symphony, Inc., Tokyo (JP)
PCT Filed Nov. 23, 2022, PCT No. PCT/US2022/080416
§ 371(c)(1), (2) Date Jan. 11, 2023,
PCT Pub. No. WO2024/112354, PCT Pub. Date May 30, 2024.
Prior Publication US 2024/0237122 A1, Jul. 11, 2024
Int. Cl. H04W 76/20 (2018.01); H04W 24/02 (2009.01); H04W 92/24 (2009.01)
CPC H04W 76/20 (2018.02) [H04W 24/02 (2013.01); H04W 92/24 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A system, comprising:
at least one processor, and
at least one non-transitory storage media storing instructions that, when executed by the at least one processor, cause the at least one processor to perform operations comprising:
setting up an F1 interface between a centralized unit (CU) of a base station and a distributed unit (DU) of the base station, wherein setting up the F1 interface comprises transmitting core connectivity status information from the CU to the DU, the core connectivity status information indicating to the DU whether or not the CU has a connection with a core network; and
in response to the core connectivity status information indicating that the CU does not have a connection with the core network, causing the DU, under an absence of the connection with the core network, to be in an active state such that the DU provides support to Non-Standalone (NSA) user equipments (UEs) and the DU does not provide support to Standalone (SA) UEs.