Vehicle-to-Infrastructure Radio Channel Selection for Changing Link Demands
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Solution Overview
Problem
Existing communication systems in motor vehicles face challenges in dynamically adapting to changing requirements, particularly in functions that demand high latency, availability, and functional safety, as these demands often conflict or hinder each other, making it difficult to specify optimal communication channels.
Innovation Solution
A method involving ascertaining a requirement vector for a function, determining the communication state, and establishing a radio channel based on these factors to create an efficient communication link between a motor vehicle and infrastructure, using techniques like artificial neural networks and weighted characteristics to optimize channel selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If communication channels are specified during design stage with fixed performance features, then system reliability is improved, but adaptability to changing requirements deteriorates
Solution Approach 1:
The patent implements dynamic channel selection by continuously monitoring communication requirements and selecting appropriate channels at runtime. The system transitions from static design-stage channel specification to dynamic runtime adaptation, where communication channels are selected based on current functional requirements, vehicle speed, and communication state, thereby resolving the contradiction between reliability and adaptability.
Solution Approach 2:
The patent changes the parameter of channel selection from fixed (design stage) to variable (runtime). By introducing requirement vectors that dynamically specify communication characteristics such as latency, data rate, and safety level, the system adapts channel parameters based on current operational conditions, resolving the contradiction between maintaining reliable communication and adapting to changing requirements.
2Reliability
If multiple communication requirements are simultaneously satisfied, then functional safety is improved, but device complexity increases
Solution Approach 1:
The patent segments communication requirements into distinct requirement vectors, each representing a specific function with its own communication characteristics (latency, data rate, safety level). By dividing the communication system into function-specific channels rather than using a monolithic communication system, the patent manages complexity while ensuring functional safety for each segmented communication task.
Solution Approach 2:
The patent introduces requirement vectors as intermediaries between communication functions and physical channels. These requirement vectors act as mediators that translate functional safety requirements into specific channel selection criteria, simplifying the complexity of simultaneously satisfying multiple communication requirements by providing a structured intermediate representation.
3Adaptability or versatility
If communication channels are adapted to changing requirements, then adaptability is improved, but loss of time in channel switching increases
Solution Approach 1:
The patent performs preliminary actions by pre-defining requirement vectors and their associated communication channels during system design. When runtime adaptation is needed, the system selects from pre-configured options rather than creating new channel configurations, significantly reducing channel switching time while maintaining adaptability to changing requirements.
Data Source
AI summary
A method for communicating between a motor vehicle and an infrastructure. The method includes: ascertaining a requirement vector for at least one function to be carried out with the aid of the motor vehicle and/or the infrastructure, the requirement vector indicating which characteristics of a communication link between the motor vehicle and the infrastructure should simultaneously be satisfied for an execution of the function; ascertaining a communication state, which indicates which communication possibilities exist for a communication link between the motor vehicle and the infrastructure; ascertaining a radio channel between the motor vehicle and the infrastructure based on the requirement vector and based on the ascertained communication state; establishing a communication link between the motor vehicle and the infrastructure using the ascertained radio channel to carry out the at least one function using the established communication link.