The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 08, 2022
Filed:
Feb. 15, 2019
Nec Corporation, Tokyo, JP;
Sheeba Backia Mary Baskaran, Tamil Nadu, IN;
Anand Raghawa Prasad, Tokyo, JP;
Sivakamy Lakshminarayanan, Tamil Nadu, IN;
Sivabalan Arumugam, Tamil Nadu, IN;
Hironori Ito, Tokyo, JP;
Takihito Yoshizawa, Heidelberg, DE;
NEC CORPORATION, Tokyo, JP;
Abstract
Methods for (i) finding/discovering the right UDM instances and (ii) ensuring the UDM instance security are provided. The method for (i), includes the steps of: (i-) pre-provisioning of UDM instance discovery information/parameters to the UE/USIM, (i-) sending the UDM instance discovery related parameters to a core network element, and (i-) discovering the right UDM instance at the core network element based on the discovery parameters and related routing information either at the UDM consumer/NRF. The method for (ii) includes the steps of: (ii-) Secured choice of parameter for UDM instance discovery (e.g. UDM instance identifier) to the core network element and (ii-) the secured UDM instance identifier generation and management at the UDM to prevent attack on UDM instances. Also a method to identify the cleartext IMSI/SUPI is provided for the re-authentication scenario along with the relevant procedures.