Method for securing a direct communication connection

US11202203B2 · kind B2 · utility

Assignee

• THALES DIS AIS Deutschland GMBH · DE

Inventors

• Volker Breuer
• Lars Wehmeier · Falkensee, DE
• Osaid Khaliq · Berlin, DE
• Thomas Ulrich · Annaberg-Buchholz, DE
• Uwe Dummann · Panketal, DE

Key dates

• Filing date: Oct 2, 2018
• Grant date: Dec 14, 2021
• Expiry date: Oct 2, 2038

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L2209/84
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

A method for securing a direct communication connection between a first and a second user equipment, both configured to operate with base stations of a wireless network, in which the first user equipment maintains an authentication code received from a first security center accessible via the wireless network, said first security center being assigned to a first area, the method comprising the steps for the first user equipment of: maintaining a trust level of the authentication code, reducing the trust level relating to the time of last access to one of the base stations of the wireless network, submitting to the second user equipment the authentication code and the trust level, for setting up the direct communication connection, and in case of reception of a confirmation transmission from the second user equipment: setting up the direct communication connection with the second user equipment.