Control Channel Plane Migration for Automotive ECU Reliability
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Solution Overview
Problem
Current automotive systems face challenges in securely and reliably communicating control information with electronic control units (ECUs) due to gaps in data updates and vulnerabilities in wireless data delivery, particularly outside cellular network coverage and susceptibility to malicious attacks.
Innovation Solution
The implementation of a control channel plane that migrates and dynamically reassesses communication between in-band and out-of-band networks, using a centralized mobility management platform to facilitate secure data communication through a combination of data and security networks, ensuring continuous and resilient data delivery and security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional cellular data networks are used for ECU data delivery, then data communication is supported within cellular coverage area, but wireless data communication is not supported outside cellular network coverage and update data are vulnerable to malicious attacks
Solution Approach 1:
The system dynamically selects and switches between in-band and out-of-band control channels based on network conditions, vehicle location, and security requirements. The mobility management platform continuously monitors network availability and transitions the control channel between LTE data networks and satellite communication networks as needed, enabling reliable operation both within and outside cellular coverage areas while maintaining security through protocol authentication.
Solution Approach 2:
The system changes the communication parameter by switching between different network bands and protocols. When operating outside cellular coverage, the control channel transitions from LTE data network parameters to satellite communication parameters, including different frequency bands, modulation schemes, and authentication protocols, thereby adapting to the external environment while maintaining reliable and secure communication.
2Reliability
If a single control channel is used for communication, then the system is simple to implement, but the control channel may fail when outside cellular coverage or under attack
Solution Approach 1:
The control channel plane is segmented into two independent sub-channels: in-band control channels using LTE data networks for normal operation within cellular coverage, and out-of-band control channels using satellite networks for operation outside cellular coverage. This segmentation allows the system to maintain simple operation within coverage while providing fallback capabilities outside coverage, reducing overall complexity compared to a single complex channel that must handle all scenarios.
Solution Approach 2:
The mobility management platform acts as an intermediary that manages the control channel plane, selecting appropriate control channels based on vehicle location and network conditions. This intermediary handles the complexity of multi-channel management centrally, allowing individual vehicle components to operate with simple single-channel logic while the system as a whole achieves high reliability through controlled channel switching.
3Reliability
If data updates are delivered only through dealerships, then security is maintained through authorized channels, but there is a gap in time from when updates are released and when vehicles receive them
Solution Approach 1:
The system implements feedback mechanisms where the mobility management platform continuously monitors vehicle locations, network conditions, and update availability. Based on this feedback, the platform proactively initiates secure data delivery through appropriate control channels, eliminating the need for vehicles to visit dealerships manually. The feedback loop ensures updates are delivered timely through authorized secure channels while adapting to real-time conditions.
4Ease of operation
If conventional cellular protocols are used for data link, then simple on-demand data links are provided, but update data for critical onboard systems are vulnerable to malicious attack
Solution Approach 1:
The system uses a composite communication approach combining conventional LTE data network protocols for ease of operation within cellular coverage and satellite communication protocols for enhanced security outside cellular coverage. Each protocol suite has its own authentication and encryption mechanisms, creating a composite security framework that leverages the strengths of both communication systems while maintaining ease of operation through automated protocol selection.
Data Source
AI summary
Systems and methods which provide reliable and resilient control channels for communicating control information with vehicle onboard systems using a control channel plane supporting migration of a control channel among various networks forming the control channel plane are described. The control channel plane of embodiments includes at least one data delivery network of a data network and at least one out-of-band network of a security network. Embodiments introduce an in-vehicle system into vehicles facilitating secure data communication between a centralized mobility management platform and the vehicles using a data network for data content communication and a security network for security enhancement with respect to the data network. The centralized mobility management platform and IVS may utilize the aforementioned control channel for control signaling with respect to such operations, wherein the control channel is migrated between various networks of the control channel plane to provide a reliable and resilient control channel.