Wireless RIS Control via UE Intermediary
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Solution Overview
Problem
The installation of Reconfigurable Intelligent Surface (RIS) devices in mobile communication systems is hindered by increased costs and reduced flexibility due to the need for wiring connections between RIS devices and base stations for communication.
Innovation Solution
A communication control method and apparatus that utilize a wireless terminal (RIS-UE) to establish a wireless connection with a base station, allowing for the transmission of RIS control information to control the RIS device, thereby eliminating the need for direct wiring and enhancing installation flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wiring connections are used between RIS devices and base stations for communication, then communication reliability is improved, but installation cost increases and installation flexibility decreases
Solution Approach 1:
The patent introduces a wireless terminal (UE) as an intermediary device that establishes wireless communication with both the base station and the RIS device. This mediator eliminates the need for direct wiring between the base station and RIS, thereby reducing installation costs and improving flexibility while maintaining communication reliability through wireless communication protocols.
Solution Approach 2:
The patent replaces the mechanical wiring connection system with a wireless communication system. Instead of physical cables connecting the base station and RIS device, the system uses wireless communication interfaces (e.g., radio frequency communication) to transmit control signals and data, thereby eliminating installation complexity and cost associated with wiring.
2Reliability
If wiring connections are used between RIS devices and base stations, then communication stability is improved, but installation flexibility is reduced
Solution Approach 1:
The wireless terminal serves as a flexible intermediary that can be deployed in various locations and configured to communicate with different base stations and RIS devices through wireless interfaces. This enables adaptable installation configurations while maintaining stable communication through established wireless communication protocols.
Solution Approach 2:
The patent implements dynamic wireless communication connections that can be established, modified, or reconfigured as needed, unlike fixed wiring connections. The wireless terminal can dynamically adjust communication parameters and establish connections adaptively, providing installation flexibility while maintaining communication stability through protocol-based reliability mechanisms.
3Area of stationary object
If RIS devices are deployed to extend base station coverage, then coverage area is improved, but system complexity increases due to wiring requirements
Solution Approach 1:
The patent replaces complex wiring infrastructure with wireless communication systems to connect RIS devices for coverage extension. This substitution simplifies the overall system architecture by eliminating the need for physical cable management, connection routing, and wiring maintenance, thereby reducing system complexity while enabling widespread RIS deployment for coverage expansion.
Solution Approach 2:
The wireless terminal acts as a simplifying intermediary that manages the communication between base stations and RIS devices wirelessly. This mediator handles the complexity of connection establishment, signal routing, and data transmission through standardized wireless protocols, thereby reducing the operational complexity of RIS-based coverage extension systems.
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 approach enables efficient coverage extension for base stations using RIS devices while minimizing installation costs and maintaining the degree of freedom in RIS device placement.
Implementation Method 1
the coverage of the base station can be extended by dynamically changing a propagation direction of a radio wave (beam) incident from the base station by way of reflection or refraction
Implementation Method 2
the coverage of the base station can be extended by dynamically changing a propagation direction of a radio wave (beam) incident from the base station by way of reflection or refraction
Data Source
AI summary
A communication control method used in a mobile communication system including a gNB and a UE performing wireless communication with the gNB, the communication control method including: establishing, by an RIS-UE, a wireless connection with the gNB, the RIS-UE controlling an RIS device that changes a propagation direction of a radio wave incident from the gNB; and transmitting, by the gNB to the RIS-UE through the wireless communication, one or more pieces of RIS control information used to control the RIS device.