RIS-MIMO Unified Control for Duplicate Signaling Reduction
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Solution Overview
Problem
Current multi-user MIMO and RIS technologies in wireless networks, particularly in 5G and beyond, suffer from significant challenges due to duplicate signaling, redundant message flows, and excessive resource consumption, leading to inefficiencies and scalability issues.
Innovation Solution
A system integrating a reconfigurable intelligent surface (RIS) with control circuitry that adjusts phase shifts and MIMO beamforming based on RIS configuration parameters received from a Master Information Block message, reducing duplicate signaling by coordinating both technologies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multi-user MIMO and multi-user RIS technologies are implemented separately, then communication performance is enhanced, but duplicate signaling and resource consumption increase
Solution Approach 1:
The patent combines MU-MIMO and MU-RIS technologies into a unified system where a single control message coordinates both MIMO beamforming and RIS phase shifts. This integration eliminates duplicate signaling by merging the control mechanisms of both technologies into one coordinated framework, reducing overhead while maintaining the performance benefits of both approaches.
Solution Approach 2:
The control message is designed to serve multiple functions simultaneously: it configures MIMO beamforming parameters and RIS phase shift parameters in a single transmission. This multi-functional approach allows the system to manage both technologies efficiently without requiring separate signaling channels, thereby reducing overall signaling complexity.
2Area of stationary object
If MU-MIMO and MU-RIS are deployed independently, then coverage and spectrum efficiency improve, but redundant message flows occur
Solution Approach 1:
The patent merges the configuration messages for MIMO and RIS into a single unified control message. This consolidation eliminates redundant message flows while ensuring that both coverage enhancement mechanisms (MIMO beamforming and RIS signal reflection) are properly coordinated and deployed throughout the network coverage area.
3Adaptability or versatility
If separate control procedures are used for MIMO and RIS, then beam control flexibility is maintained, but procedural complexity increases
Solution Approach 1:
The unified control message structure is designed to be universally applicable to both MIMO and RIS configurations. It contains parameter fields that can independently control MIMO beamforming characteristics and RIS phase shift characteristics, maintaining the flexibility and adaptability of separate control procedures while reducing overall procedural complexity through integration.
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
This integration enhances spectrum utilization and energy efficiency, supports scalable deployment of massive MIMO/RIS-assisted 6G networks by minimizing redundant signaling and procedural complexity.
Implementation Method 1
The control circuitry is configured to adjust phase shifts of the plurality of passive reflecting elements based on the received RIS configuration allowance parameter
Implementation Method 2
RIS technology employs intelligent surfaces composed of many passive or semi-passive elements to reconfigure the propagation environment by reflecting and directing electromagnetic waves toward an intended user equipment (UE)
Implementation Method 3
MIMO technology achieves the manipulation of electromagnetic wave propagation through the use of multiple antennas at both a transmitter and a receiver to support spatial multiplexing, diversity, and beamforming
Data Source
AI summary
A system reduces duplicate signaling in a wireless network using a reconfigurable intelligent surface (RIS) mounted on a structure and positioned in a signal path between a transmitter and a receiver. The RIS includes passive reflecting elements electrically connected to control circuitry. The control circuitry receives a RIS configuration allowance parameter from a Master Information Block message and uses this parameter to adjust both phase shifts of the passive reflecting elements and multi-input multi-output (MIMO) beamforming. The unified control through a single parameter coordinates RIS and MIMO operations while reducing signaling overhead.