(19)
(11) EP 4 573 735 A1

(12)

(43) Date of publication:
25.06.2025 Bulletin 2025/26

(21) Application number: 23754275.8

(22) Date of filing: 08.08.2023
(51) International Patent Classification (IPC): 
H04L 65/1016(2022.01)
H04L 65/1073(2022.01)
H04L 69/40(2022.01)
 H04L 65/1046(2022.01)
H04L 67/51(2022.01)
(52) Cooperative Patent Classification (CPC):
H04L 65/1016; H04L 65/1046; H04L 65/1073; H04L 69/40; H04L 67/51; H04L 43/08; H04L 41/0894
(86) International application number:
PCT/EP2023/071895
(87) International publication number:
WO 2024/037931 (22.02.2024 Gazette 2024/08)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
KH MA MD TN

(30) Priority: 18.08.2022 US 202263371761 P

(71) Applicant: Telefonaktiebolaget LM Ericsson (publ)
164 83 Stockholm (SE)

(72) Inventor:
  • FOTI, George
    Québec H9G 2Z8 (CA)

(74) Representative: Ericsson 
Patent Development Torshamnsgatan 21-23
164 80 Stockholm
164 80 Stockholm (SE)

   


(54) INTERNET PROTOCOL MULTIMEDIA SUBSYSTEM, IMS, NODES, CORE NETWORK NODES, AND METHODS FOR SELECTING A SERVING IMS NODE INSTANCE IN A COMMUNICATIONS NETWORK