Infrastructure Element V2X Transmission Power Adjustment
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Solution Overview
Problem
Reception of V2X communications by vehicles can be impaired by environmental features such as trees, buildings, and terrain, leading to variations in signal strength, packet error rates, and channel busy ratios within the coverage area of infrastructure elements.
Innovation Solution
An infrastructure element and stationary communication nodes are programmed to generate a communication metrics table, adjusting transmission parameters like power and throughput based on received metrics, with nodes relaying messages and ignoring non-infrastructure sources, to improve message reception quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transmission power is increased to overcome environmental obstructions, then message reception quality improves, but energy consumption increases
Solution Approach 1:
The infrastructure element dynamically adjusts transmission power based on real-time communication metrics (signal strength, packet error rate, channel busy ratio) received from communication nodes. This dynamic adjustment allows the system to use higher power only when necessary to overcome environmental obstructions, rather than maintaining constant high power, thus resolving the contradiction between reception quality and energy consumption
Solution Approach 2:
Communication nodes continuously report communication metrics back to the infrastructure element, creating a feedback loop. The infrastructure element uses this feedback to adjust transmission parameters adaptively, ensuring optimal message delivery while minimizing unnecessary energy consumption during good signal conditions
2Reliability
If transmission power is increased to ensure message delivery, then communication reliability improves, but interference to other channels increases
Solution Approach 1:
The system dynamically adjusts transmission power based on channel conditions and interference levels. When channel busy ratio indicates high interference, the infrastructure element reduces power or selects alternative channels, thereby maintaining communication reliability while minimizing harmful interference to other channels
3Reliability
If communication metrics are monitored and transmission parameters are adjusted dynamically, then message reception quality improves, but system complexity increases
Solution Approach 1:
Communication nodes autonomously measure and report their own communication metrics (signal strength, packet error rate, channel busy ratio) to the infrastructure element. The infrastructure element then autonomously adjusts its transmission parameters based on this data, creating a self-managing system that improves reception quality without requiring complex centralized control mechanisms
Data Source
AI summary
A system includes an infrastructure element having a computer. The computer is programmed to receive one or more communication metrics, and node identification data including node location data, from each of a plurality of stationary communication nodes coverage area. The computer is programmed to generate a communication metrics table that identifies locations of the stationary communication nodes and specifies their respective communication metrics. The computer is programmed, based on the communication metrics table, to adjust a transmission parameter of the infrastructure element, the transmission parameter including at least one of a transmission power or a data throughput rate.