Transmissive-Reflective RIS Sections for Wireless Sensing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems, particularly 5G NR, lack efficient methods for optimizing signal transmission and reception using reconfigurable intelligent surfaces (RIS) to enhance network performance and sensing capabilities.
Innovation Solution
A wireless device equipped with a reconfigurable intelligent surface (RIS) transmits capability reports to a network node, which configures sections of its surface for transmissive or reflective modes based on received indications, enabling dynamic control of signal transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If reconfigurable intelligent surface (RIS) is used to optimize signal transmission and reception, then network performance is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic reconfiguration of the RIS surface by allowing the wireless device to switch between transmissive and reflective modes based on capability reports and network configurations. The surface sections can be dynamically adjusted to different transmission directions and modes, enabling the system to adapt to varying network conditions and optimize performance without permanent structural changes.
Solution Approach 2:
The RIS surface is divided into multiple selectable sections that can be independently configured. The patent describes selecting specific sections of the surface for different transmission directions and modes (transmissive or reflective), allowing granular control over signal manipulation while keeping the overall device structure manageable.
2Measurement precision
If dynamic configuration of RIS surface sections is implemented, then sensing capabilities are improved, but ease of operation decreases
Solution Approach 1:
The wireless device autonomously manages its RIS configuration by generating capability reports that indicate its transmissive coefficient values, sensing capabilities, and transmissive/reflective mode support. The device can independently select appropriate surface sections based on received configurations, reducing the need for complex manual intervention while maintaining high sensing precision.
Solution Approach 2:
The system employs feedback mechanisms where the wireless device reports its capabilities to the network node, which then provides configurations. The device uses this feedback to automatically adjust its surface configuration, creating a closed-loop system that optimizes sensing capabilities without requiring complex manual operation.
3Adaptability or versatility
If transmissive and reflective modes are supported, then adaptability is improved, but device complexity increases
Solution Approach 1:
The wireless device is designed with multi-functional capability, supporting both transmissive and reflective modes within the same RIS structure. The patent describes a single surface that can operate in different modes (transmissive, reflective, or hybrid) depending on configuration, eliminating the need for separate devices for each function and reducing overall system complexity.
Solution Approach 2:
The RIS surface dynamically switches between transmissive and reflective modes based on network requirements and capability reports. This dynamic reconfigurability allows a single device to adapt to various operational scenarios, providing high versatility without requiring multiple static devices, thereby managing complexity through software-controlled reconfiguration rather than hardware multiplication.
Data Source
AI summary
A wireless device may transmit, for a network node, a capability report including (1) a first indication of a first transmissive coefficient value, (2) a second indication of a sensing capability, or (3) a third indication of a transmissive and reflective capability. The wireless device may receive, from the network node, a transmissive signal configuration or a transmissive and reflective configuration based on the capability report. The wireless device may select, based on the transmissive signal configuration or the transmissive and reflective configuration: (1) a first section of a surface of the wireless device for a first transmission direction, (2) a second section of the surface of the wireless device for a second transmission direction, (3) a third section of the surface of the wireless device for a transmissive mode, or (4) a fourth section of the surface of the wireless device for a reflective mode.