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:
Sep. 28, 2021
Filed:
Dec. 20, 2018
T-mobile Usa, Inc., Bellevue, WA (US);
Kyeong Hun An, Sammamish, WA (US);
Mathew George, Kirkland, WA (US);
Phani Ramisetty, Sammamish, WA (US);
T-Mobile USA, Inc., Bellevue, WA (US);
Abstract
A 5G user equipment (UE) can register for 5G services with a telecommunication network in part using a Subscription Concealed Identifier (SUCI), an encrypted version of a subscriber identifier, so that the actual subscriber identifier is not exposed during network registration. Legacy SIMs originally deployed for 4G/LTE and other legacy wireless access technologies store an international mobile subscriber identity (IMSI), but do not store a network public key needed to generate a SUCI. However, a 5G UE can still use a legacy SIM to securely obtain 5G services by encrypting the IMSI from the legacy SIM using a network public key stored in the 5G UE's own memory to generate a SUCI, and then transmitting the generated SUCI to the telecommunication network during network registration. Accordingly, the IMSI on the legacy SIM is not exposed during network registration.