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:
May. 28, 2024
Filed:
Apr. 30, 2020
Nokia Technologies Oy, Espoo, FI;
Suresh Nair, Whippany, NJ (US);
Nagendra Bykampadi, Bangalore, IN;
Anja Jerichow, Grafing bei München, DE;
Nokia Technologies Oy, Espoo, FI;
Abstract
Improved security management techniques between user equipment and a communication system are provided. For example, techniques are provided for preventing malicious attacks via a user equipment deregistration process. In one example, a method comprises sending a deregistration request message from the given user equipment to a communication system to which the given user equipment is registered, wherein the deregistration request message is security-protected and comprises a temporary identifier assigned to the given user equipment. By not sending the deregistration request message with a subscription concealed identifier, the given user equipment prevents a malicious actor from succeeding with a deregistration attack replaying the subscription concealed identifier. Furthermore, by ignoring a deregistration request message with a subscription concealed identifier, an access and mobility management element of the communication system prevents a malicious actor from succeeding with a deregistration attack replaying the subscription concealed identifier.