Radio Link Physical Layer Configuration Using Environment Sensing
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Solution Overview
Problem
Conventional link adaptation methods in mobile communication systems rely heavily on Signal-to-Noise Ratio (SNR) for selecting modulation and coding schemes, often leading to inadequate adjustments due to insufficient consideration of environmental and movement-related factors, resulting in inefficient radio link configurations.
Innovation Solution
A method for determining a physical layer configuration that incorporates environmental and state of movement information of transceivers, using sensor data and environmental models to estimate radio conditions, allowing for a more comprehensive adjustment of parameters such as subcarrier spacing, pilot symbol configuration, and modulation order.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional link adaptation methods rely heavily on SNR for selecting modulation and coding schemes, then the selection process is simple, but the radio link configuration becomes inadequate and inefficient
Solution Approach 1:
The patent changes the parameters used for link adaptation from relying solely on SNR to incorporating environmental parameters (temperature, humidity, pressure, wind speed, wind direction, precipitation) and movement parameters (speed, acceleration, orientation). This multi-parameter approach enables more adequate radio link configurations by accounting for actual propagation conditions that affect signal quality beyond what SNR alone can capture.
2Productivity
If environmental and movement-related factors are incorporated into link adaptation, then radio link configuration efficiency improves, but the system complexity increases
Solution Approach 1:
The patent segments the link adaptation process into distinct functional blocks: an environmental parameter acquisition block that collects data from sensors (temperature, humidity, pressure, wind, precipitation), a movement parameter acquisition block that obtains speed, acceleration, and orientation data, and a configuration determination block that processes these parameters to select optimal modulation and coding schemes. This segmentation manages system complexity by organizing the multi-parameter approach into modular, manageable components.
Solution Approach 2:
The patent creates a universal link adaptation mechanism that can handle multiple types of parameters (environmental and movement-related) through a single integrated determination process. This multi-functional approach allows the system to efficiently process diverse inputs and generate comprehensive radio link configurations that account for various propagation conditions, thereby improving overall configuration efficiency without requiring separate specialized systems for each parameter type.
3Measurement precision
If sensor data and environmental models are used to estimate radio conditions, then the accuracy of physical layer configuration improves, but the data processing requirements increase
Solution Approach 1:
The patent applies partial action by selectively using environmental and movement parameters that are most relevant to the current radio propagation conditions. Rather than processing all available sensor data equally, the system determines which parameters have the greatest impact on radio link quality in the given context and prioritizes those for processing. This approach maintains high estimation accuracy while reducing unnecessary data processing and associated energy consumption.
Data Source
AI summary
A transportation vehicle, infrastructure, a transceiver, an apparatus, a method, and a computer program for determining a physical layer configuration for a radio link for a communication system. The method for determining a physical layer configuration for a radio link at a first transceiver to communicate with a second transceiver via the radio link includes obtaining information related to an environment and a state of movement of the first and second transceivers, estimating a radio condition of the radio link based on the information related to the environment and the state of movement of the first and second transceivers, and determining the physical layer configuration for the radio link based on the radio condition.