User identity privacy protection in public wireless local access network, WLAN, access
US11212676B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2017 |
| Grant date | Dec 28, 2021 |
| Priority date | — |
| Expiry date | Sep 25, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/02
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems and methods relating to providing identity privacy over a trusted or untrusted non-3GPP access network in a wireless communication system are disclosed. In some embodiments, a method of operation of a wireless device comprises sending a message to a gateway (ePDG, N3IWF or TWAG) where the message comprises an anonymous user identity; receiving a request for obfuscating the user identity wherein the request comprises a server certificate; and validating the server certificate and sending a response message back to the gateway, comprising the user identity obfuscated by a public key associated with the server certificate. Similar methods are provided on the gateway side and AAA server side. In this manner, the user identity is protected when establishing the connection to the core network and protects against a man in the middle attack.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.