METHOD, DEVICE, AND SYSTEM FOR PCF DETERMINATION Russian patent published in 2023 - IPC H04W8/14 

FIELD: wireless communication.

SUBSTANCE: method includes: reception by the first AMF of PCF identification information sent by the second AMF, and reception by the first AMF of policy information from a target PCF, when at least one PCF corresponding to PCF identification information includes the target PCF, wherein PCF identification information includes identification information of at least one first PCF, identification information of the first PCF includes at least one of IP address of the first PCF, IP prefix of the first PCF, and FQDN of the first PCF, the first AMF is AMF providing a service to a terminal for access to a network this time, and the second AMF is AMF providing a service to the terminal for access to the network previous time.

EFFECT: provision of a terminal with unhindered access to a network with simultaneous reduction in overhead costs for signaling, necessary for determination of PCF.

37 cl, 26 dwg, 1 tbl