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:
Jul. 21, 2026
Filed:
Dec. 28, 2023
T-mobile Usa, Inc., Bellevue, WA (US);
Kunal Prakash Barawkar, Bothell, WA (US);
Romil Kumar Sood, Bothell, WA (US);
Suresh Thanneeru, Bothell, WA (US);
T-Mobile USA, Inc., Bellevue, WA (US);
Abstract
Subscriber service validation using subscription concealed identifier (SUCI) cleartext is disclosed. When a user equipment (UE) attempts to register with a wireless network, it sends its SUCI which has an encrypted subscription permanent identifier (SUPI), but also a routing indicator in cleartext (unencrypted). This is available to the base station. By formulating a list of routing indicators associated with roaming partners (along with its own routing indicator), the base station is able to identify UEs that should be approved for registration. This precludes the need for the access and mobility function (AMF) to involve the authentication server function (AUSF) and unified data management (UDM) in decrypting the SUPI for unauthorized UEs, thereby reducing network traffic. Identification of the public key, associated with the private key used to encrypt the SUPI, is also within the SUCI in cleartext, and so may be used in place of the routing indicator.