US 12,414,022 B2
Dynamic discovery of network functions in mobility interworking across radio access technologies
Rajendra Prasad Kodaypak, Sammamish, WA (US); and Vikram Seenappa, Sammamish, WA (US)
Assigned to AT&T Intellectual Property I, L.P., Atlanta, GA (US)
Filed by AT&T Intellectual Property I, L.P., Atlanta, GA (US)
Filed on Jun. 10, 2024, as Appl. No. 18/738,733.
Application 17/974,946 is a division of application No. 16/924,886, filed on Jul. 9, 2020, granted, now 11,516,718, issued on Nov. 29, 2022.
Application 18/738,733 is a continuation of application No. 17/974,946, filed on Oct. 27, 2022, granted, now 12,041,506.
Prior Publication US 2024/0334284 A1, Oct. 3, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 36/14 (2009.01); H04W 8/24 (2009.01); H04W 36/00 (2009.01); H04W 48/16 (2009.01)
CPC H04W 36/14 (2013.01) [H04W 8/24 (2013.01); H04W 36/00222 (2023.05); H04W 36/144 (2023.05); H04W 48/16 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
discovering, by a processing system including a processor, an access mobility management function (AMF) in another radio technology network responsive to a message received by a network repository function (NRF) from a mobile management entity (MME) in a Long-Term Evolution (LTE) network that a user equipment (UE) has crossed a threshold and entered a coverage area of the another radio technology network, wherein the UE accesses a packet data network (PDN) through the LTE network;
transferring, by the processing system, metadata associated with the UE to the AMF responsive to discovering the AMF;
handing over, by the processing system, cellular services for the UE to the another radio technology network after the transferring; and
providing, by the processing system, the UE with access to the PDN through a user data plane function (UPF) of the another radio technology network after the handing over.