IRS Channel Measurement Feedback for Adaptive Reflection Control
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Solution Overview
Problem
The challenge of configuring an ideal operation mode for an intelligent reflecting surface (IRS) in wireless networks due to significant changes in wireless channel characteristics is not adequately addressed by existing technologies.
Innovation Solution
A method of channel measurement for IRS-assisted wireless networks involving transmitting a measurement configuration to user equipment, receiving a measurement report, and outputting commands to configure the IRS based on the report, including mode information and channel quality metrics like RSRP, RSSI, and SINR.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If IRS operation modes are changed to adapt to different wireless channel characteristics, then signal reception quality is improved, but system complexity and configuration difficulty increase
Solution Approach 1:
The patent implements a feedback mechanism where the base station transmits measurement configurations to user equipment, receives measurement reports containing channel quality indicators (RSRP, RSSI, SINR), and uses this feedback to determine optimal IRS operation modes. This closed-loop feedback system enables adaptive IRS configuration that improves signal reception while automating the complexity of mode selection.
Solution Approach 2:
The user equipment performs self-measurement of channel characteristics and generates measurement reports autonomously based on configurations from the base station. The UE independently evaluates different IRS operation modes and provides feedback, enabling the system to self-optimize without manual intervention, thus reducing configuration complexity while maintaining reliability.
2Adaptability or versatility
If multiple IRS operation modes are supported to handle varying channel conditions, then adaptability is improved, but measurement and configuration difficulty increase
Solution Approach 1:
The patent segments the channel measurement process into distinct components: the base station segments the measurement configuration by transmitting different configuration parameters for different IRS operation modes, the user equipment segments the measurement by evaluating each mode separately using specific channel quality indicators (RSRP, RSSI, SINR), and the base station segments the decision-making by selecting optimal modes based on segmented measurement reports. This segmentation makes the complex measurement process manageable and systematic.
3Productivity
If channel measurement and IRS configuration automation is implemented, then productivity is improved, but device complexity increases
Solution Approach 1:
The patent introduces measurement reports as an intermediary mechanism between the user equipment and IRS configuration. The base station uses these standardized measurement reports containing channel quality indicators as intermediate data to automatically determine IRS operation modes. This intermediary structure streamlines the automation process, enabling efficient IRS configuration while managing base station processing complexity through standardized information exchange.
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
Enables effective configuration of IRS operation modes to improve channel quality and minimize interference, facilitating handover decisions and enhancing signal reception at cell edges and in dead zones.
Implementation Method 1
the IRS may be configured to reflect the signal from the BS to the UE so as to improve the signal reception at the UE end
Data Source
AI summary
A method of channel measurement for intelligent reflecting surface assisted wireless network and a base station (BS) using the same method are provided. The method includes: transmitting a measurement configuration comprising mode information of an intelligent reflecting surface to a user equipment; receiving a measurement report corresponding to the measurement configuration from the user equipment, wherein the measurement report corresponds to a channel between the user equipment and the intelligent reflecting surface; and outputting a command according to the measurement report.