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US 12,689,970 B2Granted
Subscriber service validation using SUCI cleartext
AssigneeT-Mobile USA, Inc.
InventorsKunal Prakash Barawkar, Romil Kumar Sood, Suresh Thanneeru
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AssigneeT-Mobile USA, Inc.
InventorsKunal Prakash Barawkar, Romil Kumar Sood, Suresh Thanneeru
Estimating the term…
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.
A method of wireless communication, the method comprising:
A system comprising:
One or more computer storage devices having programming instructions stored thereon, which, upon execution by a processor of a system computer, cause the system to perform the following operations:
Dependencies are inferred from the claim text.