V2X Interface Selection by Service ID for QoS-Compliant Messaging
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Solution Overview
Problem
Existing V2X message transmission systems face issues where the application layer of a terminal autonomously selects a communications interface, leading to potential failure in meeting the Quality of Service (QoS) requirements of V2X messages due to the inability to perceive current communication capabilities.
Innovation Solution
Implementing a V2X layer that determines the communications interface based on pre-configured correspondence relationships between service identifiers and interfaces, ensuring that V2X messages are transmitted through appropriate channels that meet their QoS requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the application layer of the terminal autonomously selects a communications interface for transmitting a V2X message, then the transmission process is simplified and the application layer has operational autonomy, but the QoS requirements of the V2X message cannot be met because the application layer cannot perceive the current communication capability of the communications interface
Solution Approach 1:
The patent segments the interface selection function from the application layer and assigns it to the access stratum. Specifically, the access stratum includes an interface selection module that independently determines which communications interface (first or second) to use based on current communication capabilities, while the application layer retains its autonomy to generate and send messages without being burdened by selection complexity.
Solution Approach 2:
The access stratum acts as an intermediary between the application layer and the communications interfaces. It receives messages from the application layer, determines the appropriate interface based on current communication capabilities, and forwards the message through the selected interface. This intermediary structure allows the application layer to maintain autonomy while ensuring QoS requirements are met through informed interface selection.
2Device complexity
If the application layer selects the communications interface without perceiving current communication capability, then the system structure remains simple with clear layer boundaries, but transmission failure occurs when the selected interface cannot support the message requirements
Solution Approach 1:
The patent divides the terminal into distinct functional layers: the application layer responsible for message generation and the access stratum responsible for interface selection and transmission. This segmentation maintains clear layer boundaries and system structure simplicity while improving reliability through specialized functionality in each layer.
Solution Approach 2:
The access stratum continuously monitors the current communication capability of available interfaces and uses this feedback information to dynamically select the most appropriate interface for each message. This feedback mechanism ensures that transmission decisions are based on real-time interface status, thereby improving transmission success rate without complicating the overall system structure.
3Productivity
If different V2X messages with different QoS requirements are transmitted through the same communications interface, then the interface utilization is maximized, but the QoS requirements of messages requiring low latency and high reliability cannot be met
Solution Approach 1:
The patent implements dynamic interface selection where the access stratum evaluates current communication capabilities and selects the most appropriate interface (first or second) for each message based on its QoS requirements. This dynamic approach allows the system to adapt to changing conditions and ensure that messages with stringent requirements are transmitted through interfaces that can meet those requirements, while still maximizing overall interface utilization.
Data Source
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AI summary
Embodiments of this application relate to the field of communications technologies, and disclose a V2X message transmission method, a device, and a system, to resolve a problem caused by an application layer of a terminal autonomously selecting a communications interface for transmitting a V2X message. The method includes: A terminal obtains a service identifier of a first V2X message; the terminal determines a communications interface of the first V2X message based on the service identifier of the first V2X message and a correspondence relationship between a service identifier of a V2X message and at least one communications interface; and the terminal sends the first V2X message through the communications interface of the first V2X message.