Vehicle Control Unit Low-Latency Remote Wake-Up
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Solution Overview
Problem
Existing motor vehicle control systems experience high latency and complications in remote service operations during the parked phase due to the need for separate receivers and complex circuitry, leading to unreliable command delivery and energy inefficiency.
Innovation Solution
A control unit that remains logged into a mobile radio network and reserves an Internet address via an auxiliary processor, allowing for low-latency communication and remote activation of the main module using a wake-up line, enabling remote control and configuration of vehicle functions without the need for continuous power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the control unit remains permanently logged into a mobile radio network to enable remote control during parked phase, then remote service availability is improved, but energy consumption increases
Solution Approach 1:
The mobile radio module dynamically switches between operational states: it remains logged into the mobile radio network during parked phase for immediate remote control responsiveness, and can be switched off when not needed. This dynamic state management allows the system to maintain reliability when required while minimizing energy consumption during idle periods.
2Adaptability or versatility
If separate receivers are used to generate wake-up signals for remote control, then remote activation capability is improved, but device complexity increases
Solution Approach 1:
The patent merges the wake-up signal reception functionality into the existing mobile radio module. The mobile radio module that is already logged into the network also handles wake-up signal reception and processing, eliminating the need for separate wake-up receivers and reducing overall device complexity while maintaining remote activation capability.
Solution Approach 2:
The mobile radio module is designed to perform multiple functions: it maintains network connectivity for data communication, receives wake-up signals for remote activation, and manages the transition between active and standby states. This multi-functionality reduces the need for dedicated separate components.
3Use of energy by moving object
If the main module is switched off during parked phase to save energy, then energy consumption is reduced, but remote control responsiveness increases latency
Solution Approach 1:
The control unit performs preliminary actions by remaining logged into the mobile radio network and maintaining a ready state during parked phase. The auxiliary processor stays active to receive and process wake-up commands before the main module needs to be fully activated, reducing the overall latency of remote control operations.
Solution Approach 2:
The control unit is segmented into different functional components with different power states: the auxiliary processor remains active to handle communication and wake-up signals, while the main module can be switched off to save energy. This segmentation allows partial operation that balances energy consumption with responsiveness.
Data Source
AI summary
The invention relates to a control unit for a motor vehicle, wherein the control unit is configured to switch off, upon reception of an ignition-off signal transmitted in the motor vehicle for initiating a parked phase, a main module provided for operation with ignition switched on. It is the object of the invention to provide a remote service with low latency during the parked phase. For this purpose, in the control unit, a mobile radio module is provided, which is configured so that it remains logged into a mobile radio network with the main module switched off. An auxiliary processor device is configured to reserve an Internet address on an address server of the Internet via the mobile radio module, and to store the Internet address on a control server of the Internet, which is configured for the remote control of the motor vehicle.