US 12,238,579 B2
DNN manipulation using selection priority
Lasse Olsson, Träslövsläge (SE); and Peter Ramle, Mölnlycke (SE)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Appl. No. 17/763,248
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Dec. 6, 2019, PCT No. PCT/EP2019/084035
§ 371(c)(1), (2) Date Mar. 24, 2022,
PCT Pub. No. WO2021/069087, PCT Pub. Date Apr. 15, 2021.
Claims priority of provisional application 62/911,494, filed on Oct. 7, 2019.
Prior Publication US 2022/0345941 A1, Oct. 27, 2022
Int. Cl. H04W 48/18 (2009.01); H04W 28/08 (2023.01); H04W 76/12 (2018.01)
CPC H04W 28/0925 (2020.05) [H04W 48/18 (2013.01); H04W 76/12 (2018.02)] 19 Claims
OG exemplary drawing
 
1. A method implemented by a Policy Control Function (PCF) of a Core Network (CN) node in a communications network, the method comprising:
receiving a request message from an Access and Mobility management Function (AMF) of the CN node or a different CN node, the request message comprising a requested Data Network Name (DNN) designated by a wireless terminal in a Protocol Data Unit (PDU) session establishment request to the AMF;
responsive to the request message and to session-specific information, determining a selected DNN and a Session Management Function (SMF) index, the SMF index corresponding to one or more SMFs of the CN node or one or more other CN nodes, each of the one or more SMFs being registered with a Network Repository Function (NRF) of the CN node or the different CN node according to a corresponding SMF profile, and wherein an available pool of SMFs is limited for a particular PDU session based on the session-specific information and the requested DNN; and
sending the selected DNN and the SMF index to the AMF to facilitate selection of one of the one or more SMFs via the NRF for establishment of the PDU session between the wireless terminal and the selected SMF.