AT&T. has been granted a patent for a secure communication method for autonomous vehicles. The system enhances authentication by generating estimation data based on a mobile device’s travel direction and transmitting encryption keys to facilitate secure connections before the devices are within communication range. GlobalData’s report on AT&T gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on AT&T, 3D memory devices was a key innovation area identified from patents. AT&T's grant share as of July 2024 was 78%. Grant share is based on the ratio of number of grants to total number of patents.

Secure authentication for autonomous vehicle communication systems

Source: United States Patent and Trademark Office (USPTO). Credit: AT&T Inc

The patent US12075242B2 outlines a method and system for enhancing secure wireless communication between mobile devices and node devices. The process begins with a mobile device sending a first encryption key to a first node device, which then generates estimation data to determine the mobile device's direction of travel in relation to street geometry. This estimation allows the first node device to transmit a second encryption key to a second node device before the mobile device is within its wireless connection range. The method also includes provisions for additional encryption keys to facilitate further secure connections, ensuring that multiple nodes can authenticate and establish secure links with the mobile device as it moves.

Further claims detail the mechanisms for estimating the mobile device's travel direction based on various factors, including speed, vehicle traffic conditions, and street geometry. The first node device can predict when the mobile device will enter the coverage area of the second node device, allowing for timely key transmission. Additionally, the system can identify other node devices along the mobile device's path, enabling concurrent key transmissions to multiple nodes. The patent emphasizes the importance of secure authentication processes and the generation of unique encryption keys to maintain the integrity of wireless connections, thereby enhancing the overall security of mobile communications in dynamic environments.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.