Vehicle Functionality Control via BLE Announcement Frame Authentication
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Solution Overview
Problem
The existing methods for controlling vehicle functionalities via Bluetooth Low Energy (BLE) protocols are hindered by slow connection establishment times, especially when multiple connection frames are exchanged, and the communication module becomes unavailable during this process, limiting simultaneous interactions with other devices like physical keys.
Innovation Solution
A method where authentication data is transmitted within an announcement frame during the connection establishment process, allowing vehicle functionality control before the connection is fully established, using a user terminal with a second communication module to request and verify authentication data with the vehicle's electronic control unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If connection establishment frames are exchanged between communication modules to establish a connection, then reliable communication is achieved, but connection establishment time increases and the communication module becomes unavailable during this period
Solution Approach 1:
The patent applies preliminary action by including authentication data in the announcement frame before the connection is fully established. The electronic control unit verifies authentication data and commands functionality execution during the connection establishment process itself, rather than waiting for connection completion. This allows the vehicle function to be controlled while the connection is still being established, reducing the effective time loss.
2Reliability
If multiple connection establishment frames are exchanged, then secure connection is established, but the communication module is unavailable for simultaneous interactions with other devices
Solution Approach 1:
The patent enables preliminary authentication and functionality command execution during the connection establishment process. By verifying authentication data and executing functionality commands before the connection is fully established, the system maintains connection security while enabling simultaneous interactions with multiple devices, as the communication module can process authentication and commands without waiting for connection completion.
3Reliability
If authentication data is transmitted after connection establishment, then authentication security is maintained, but functionality control time is delayed
Solution Approach 1:
The patent implements preliminary action by transmitting and verifying authentication data within the announcement frame during connection establishment, before the connection is fully formed. The electronic control unit receives the announcement frame containing authentication data, verifies it, and commands the functionality execution during this preliminary phase. This eliminates the sequential delay of first establishing connection and then performing authentication, thereby reducing functionality control time while maintaining authentication security through proper verification protocols.
Data Source
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AI summary
The invention relates to a method for controlling a functionality of a vehicle (10) fitted with a first communication module (16), by means of a user terminal (20) fitted with a second communication module (26), said method comprising the following steps: determination of authentication data by a processor (22) of the user terminal (20); emission by the second communication module (26), in at least one announcement frame, of a request for control of the functionality and the authentication data; reception of the announcement frame by the first communication module (16) and verification of the authentication data by an electronic control unit (11) of the vehicle (10); and control of the functionality by the electronic control unit (11) in the event of positive verification.