V2X Communication Device Dynamic Congestion Control
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Solution Overview
Problem
In V2X communication systems, existing technologies face challenges in efficiently managing wireless channel congestion, which affects the operation of various services provided through vehicle-to-everything (V2X) communication, particularly in managing transmission periods and structures of messages.
Innovation Solution
A method and device for V2X communication that acquires channel busy ratio (CBR) information to determine the state and substate of a channel for distributed congestion control (DCC), generating transmission period and structure information for V2X messages, allowing for flexible adjustment of message transmission based on channel conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If transmission period and structure of V2X messages are fixed, then system complexity is reduced, but channel congestion control efficiency deteriorates
Solution Approach 1:
The patent implements dynamic adjustment of transmission period and message structure based on channel congestion levels. The system transitions from fixed parameters to variable parameters that adapt to real-time channel conditions, allowing optimal control efficiency without excessive complexity through predefined adjustment rules
Solution Approach 2:
The patent changes transmission parameters (period and structure) based on channel state information. By monitoring channel congestion and adjusting message transmission parameters accordingly, the system achieves efficient congestion control while maintaining manageable complexity through parameter adaptation
2Reliability
If V2X messages are transmitted frequently, then message delivery reliability is improved, but channel congestion increases
Solution Approach 1:
The patent implements periodic message transmission with variable periods based on channel conditions. Instead of continuous or fixed-period transmission, the system adjusts the transmission period dynamically, ensuring reliable delivery when channels are good while reducing transmission frequency when congestion occurs
Solution Approach 2:
The patent uses channel state feedback to control message transmission frequency. By monitoring channel congestion levels and adjusting transmission behavior accordingly, the system maintains message delivery reliability while preventing excessive channel usage that would cause congestion
3Productivity
If message transmission parameters are adjusted dynamically, then channel resource utilization is improved, but control complexity increases
Solution Approach 1:
The patent implements dynamic parameter adjustment with predefined rules and thresholds. Rather than complex real-time optimization, the system uses manageable dynamic control based on channel state measurements, achieving improved resource utilization through structured adaptability
Solution Approach 2:
The patent adjusts transmission parameters based on measured channel conditions using predefined adjustment strategies. This approach achieves better channel resource utilization while keeping control complexity manageable through rule-based parameter adaptation rather than complex optimization algorithms
Data Source
AI summary
Disclosed is a method for receiving a V2X message by a V2X communication device. A method for transmitting a V2X message comprises the steps of: acquiring CBR information indicating a congestion state of a channel; determining a state and substate of a channel for a distributed congestion control (DCC) on the basis of the CBR information; on the basis of the state and substate state, generating transmission period information and transmission structure information for the V2X message; and generating the V2X message on the basis of the transmission period information and the transmission structure information. Here, the transmission period information indicates a transmission period of the V2X message, and the transmission structure information indicates a structure of the V2X message transmitted in the transmission period.