RIS Acquisition via Sidelink Discovery for Wireless Networks
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Solution Overview
Problem
Wireless communication systems face challenges in detecting and acquiring information about autonomously deployed or mobile Reconfigurable Intelligent Surfaces (RIS) by control nodes, such as base stations, due to unknown positions and capabilities, which affects communication efficiency and coverage.
Innovation Solution
The system enables control nodes to detect, acquire, and share RIS information through sidelink messages, allowing RIS to transmit its position and capabilities directly or indirectly to base stations, and for base stations to manage RIS information dissemination and power state, ensuring efficient communication and reduced power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If RIS information is continuously transmitted by autonomously deployed or mobile RIS, then communication efficiency and coverage are improved, but power consumption increases
Solution Approach 1:
The RIS controller transmits RIS information periodically or event-triggered rather than continuously, reducing power consumption while maintaining communication efficiency. The transmission is activated based on specific conditions such as detection of user equipment or changes in communication requirements.
Solution Approach 2:
The RIS autonomously manages its own information transmission by detecting when RIS information should be updated or transmitted based on local conditions, reducing the need for continuous network control and minimizing power consumption while maintaining communication efficiency.
2Loss of time
If RIS information is transmitted autonomously by RIS, then acquisition speed is improved, but device complexity increases
Solution Approach 1:
The RIS controller pre-processes and prepares RIS information for transmission, organizing position, orientation, and capability data in advance so that when transmission is needed, the information is readily available, improving acquisition speed without requiring complex real-time processing.
Data Source
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AI summary
An apparatus receives reconfigurable intelligent surface (RIS) information in a sidelink message from a controller of an RIS and transmits the RIS information to a base station. A base station receives RIS information for an RIS and transmits, to the RIS, a message indicating for the RIS to stop transmitting the RIS information. An RIS transmits, via a controller at the RIS, a sidelink message comprising RIS information for the RIS and receives, from a base station, an indication to stop transmitting the RIS information.