Conditional RIS Reflection Configuration for Blocked Wireless Sensing
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently and accurately performing sensing operations to improve system performance and support various services, particularly in environments with blockages or interference, leading to reduced reliability and energy inefficiency.
Innovation Solution
Implementing nodes equipped with reconfigurable intelligent surfaces (RIS) and other communication devices that can adapt sensing parameters based on received signals, such as incidence angles and power ratios, to optimize signal transmission and reflection, thereby enhancing accuracy and energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If sensing operations are performed in environments with blockages or interference, then sensing coverage is improved, but sensing accuracy deteriorates
Solution Approach 1:
The patent introduces a reconfigurable intelligent surface (RIS) as an intermediary component to reflect sensing signals around blockages. The RIS creates alternative signal paths by reflecting signals from the transmitting device to the receiving device via the surface, enabling sensing in environments with blockages while maintaining signal quality and sensing accuracy through controlled reflection paths.
2Reliability
If sensing signals are transmitted continuously to improve sensing reliability, then sensing reliability is improved, but energy consumption increases
Solution Approach 1:
The patent implements periodic sensing operations where the transmitting device sends sensing signals at specific intervals rather than continuously. The system determines appropriate time intervals based on the sensing requirements and environmental conditions, maintaining sensing reliability through regular periodic measurements while significantly reducing energy consumption compared to continuous transmission.
3Measurement precision
If reconfigurable intelligent surfaces are used to adapt to environmental conditions, then sensing accuracy is improved, but device complexity increases
Solution Approach 1:
The reconfigurable intelligent surface in the patent is configured to automatically adapt to environmental conditions through self-service mechanisms. The RIS adjusts its reflection characteristics based on received control signals that contain information about the environmental conditions, enabling the system to maintain high sensing accuracy without requiring complex manual configuration or intervention, thus balancing accuracy improvement with manageable device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances sensing accuracy and reliability by adapting parameters based on environmental conditions, improving energy efficiency and robustness in wireless communication systems.
Implementation Method 1
the one or more communication devices may emit one or more RF signals to detect objects or areas (e.g., zones) within the environment... reception of reflections (e.g., echoes) of the transmitted sensing signal by a receiver node
Data Source
AI summary
Aspects of the present disclosure relate to a node for wireless communication configured to receive a configuration with parameters for reception and measurement of sensing signals and a second set of parameters for transmitting or reflecting signals, wherein at least one parameter of the first set of parameters indicates a metric of the sensing signals for measurement, and at least one parameter of the second set of parameters indicates at least one condition for outputting signals by transmitting or reflecting the output signals, receive a first sensing signal according to the received configuration, measure a value of the metric for the received first sensing signal according to the received configuration, and determine at least one parameter associated with a second signal based on the measured value of the metric or the condition for outputting the second signal according to the received configuration.