V2X RAT Selection Using QoS Indicators for Low-Latency Reliability
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Solution Overview
Problem
Existing systems fail to dynamically determine the most suitable Radio Access Technology (RAT) for V2X messages based on target performance capabilities, such as latency, reliability, and availability, which is crucial for efficient and safe vehicle-to-everything (V2X) communication.
Innovation Solution
A mobile vehicle equipment with a V2X communication management device that includes a Radio Access Technology selection unit to dynamically select the optimal RAT based on a set of performance indicators, such as latency, reliability, and availability, by establishing connections with an application server and predicting Quality of Service (QoS) to ensure efficient V2X message transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed RAT selection strategy is used for V2X messages, then device complexity is reduced, but adaptability to different performance requirements deteriorates
Solution Approach 1:
The patent implements dynamic RAT selection by enabling the communication device to automatically choose between direct V2V communication and indirect V2N2V communication based on real-time QoS requirements of different message types. This dynamic adaptation allows the system to optimize performance for each message while maintaining manageable complexity through automated decision-making algorithms.
Solution Approach 2:
The system changes the communication parameter (RAT selection) based on the QoS parameters of the V2X messages. Different message types with different QoS requirements are routed through different communication paths, allowing the system to adapt to varying performance needs without increasing overall device complexity.
2Speed
If direct V2V communication is used for all messages, then transmission speed is improved, but reliability for long-distance communication deteriorates
Solution Approach 1:
The patent introduces an intermediary approach by providing two communication paths: direct V2V communication for short-range high-speed transmission and indirect V2N2V communication via cellular network for long-range reliable transmission. The system selects the appropriate path based on distance and QoS requirements, combining the advantages of both direct and indirect communication methods.
3Area of stationary object
If indirect V2N2V communication is used for all messages, then coverage area is improved, but transmission latency increases
Solution Approach 1:
The system dynamically selects between direct and indirect communication modes based on the specific message requirements and environmental conditions. For messages requiring low latency, direct V2V communication is preferred when available. For messages requiring wide coverage, indirect V2N2V communication is selected, optimizing the trade-off between coverage and latency in real-time.
4Productivity
If multiple RAT options are evaluated for each message, then communication performance is improved, but processing complexity increases
Solution Approach 1:
The patent implements self-service by enabling the communication device to automatically evaluate and select the optimal RAT based on pre-defined QoS parameters and message characteristics. The automated decision-making process eliminates the need for manual configuration or complex real-time analysis, improving communication efficiency while keeping processing complexity manageable through rule-based selection criteria.
Data Source
AI summary
A piece of mobile vehicle equipment includes a V2X communication management device connected to a cellular communication network. The communication management device includes a Radio Access Technology selection unit that determines the Radio Access Technologies (RAT) available to be used for transmitting a data packet, associated with a V2X application executed by the piece of mobile vehicle equipment, to at least one receiving device. The selection unit selects the available Radio Access Technologies from a set of Radio Access Technologies, depending on target Quality of Service information including an n-tuple of performance indicators, the n-tuple of performance indicators including at least one performance indicator and being determined from a set of performance indicators chosen according to the V2X application.