US 12,349,006 B2
Coordination of edge application server reselection using edge client subnet
Maria Luisa Mas Rosique, Tres Cantos (ES); Attila Mihály, Dunakeszi (HU); and Jan Backman, Kärna (SE)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Appl. No. 18/010,320
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Jul. 22, 2021, PCT No. PCT/EP2021/070539
§ 371(c)(1), (2) Date Dec. 14, 2022,
PCT Pub. No. WO2022/033832, PCT Pub. Date Feb. 17, 2022.
Claims priority of provisional application 63/064,161, filed on Aug. 11, 2020.
Prior Publication US 2023/0337056 A1, Oct. 19, 2023
Int. Cl. H04W 28/08 (2023.01); H04W 40/02 (2009.01)
CPC H04W 28/0858 (2020.05) [H04W 40/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method performed by a session management function (SMF) in a communication network, the method comprising:
determining that a first data path for a Packet Data Unit (PDU) session between an application client and a first edge application server (EAS) should be relocated from a first local PDU session anchor (PSA) and a first uplink classifier and branching point (ULCL/BP) to a second PSA and a second ULCL/BP;
determining an edge client subnet (ECS) associated with the second PSA;
sending, to an application function (AF) associated with the application client, a notification of the relocation, wherein the notification includes an identifier of the ECS and a data network access identifier (DNAI) associated with the second PSA;
receiving, from the AF, a response that includes an identifier of a second EAS and the DNAI associated with the second PSA; and
based on the response, establishing a second data path for the PDU session between the application client and the second EAS via the second PSA and the second ULCL/BP.