Radio Relay Device Beam Control for Dead Zone Coverage
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Solution Overview
Problem
In next-generation mobile communication systems, high-frequency bands face challenges such as dead zones due to strong radio wave straightness, leading to deteriorated communication quality, especially when obstacles block the line of sight between base stations and user equipment (UE).
Innovation Solution
A radio relay device equipped with a control unit that manages beam relay states without signal interpretation and an information acquisition unit to receive control information from base stations, allowing for the estimation and control of propagation paths to optimize beam control in reflective intelligent surfaces (RIS).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If high frequency bands are used for next-generation mobile communication, then communication capacity and speed are improved, but dead zones occur due to strong radio wave straightness and distance attenuation increases
Solution Approach 1:
A radio relay device is introduced as an intermediary between the base station and user equipment. This device receives radio waves from the base station, relays them through reflection or transmission with beam control, and delivers them to the user equipment, thereby solving the dead zone problem caused by high frequency band straightness without requiring additional signal sources
Solution Approach 2:
The patent employs beam control in the spatial dimension to redirect radio waves around obstacles. By controlling the phase and direction of relayed radio waves, the system creates alternative propagation paths in three-dimensional space, overcoming the line-of-sight limitation inherent in high frequency bands
2Reliability
If passive repeaters or active type reflectors are used to improve communication quality in multipath environment, then coverage is improved, but device complexity and cost increase
Solution Approach 1:
The patent extracts only the essential beam control function from complex repeater systems. The radio relay device performs simple reception, phase control, and retransmission without full signal interpretation, removing unnecessary complexity while maintaining the ability to improve coverage and reliability through intelligent beam steering
3Reliability
If beam control is implemented to relay radio waves, then communication quality in dead zones is improved, but control information acquisition and propagation path estimation complexity increase
Solution Approach 1:
The radio relay device performs self-configuration by automatically acquiring control information from the base station and estimating propagation paths using received reference signals. This self-service capability reduces manual configuration complexity while enabling adaptive beam control to maintain high communication quality in challenging environments
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 solution enhances communication quality by effectively relaying radio waves around obstacles, maintaining connectivity and improving coverage without the need for additional signal sources, reducing installation and operational costs, and enabling adaptive beam control based on real-time propagation path information.
Implementation Method 1
When radio waves are reflected or transmitted from a radio wave source such as a base station or a terminal (User Equipment, UE) to a radio wave reception destination for relaying
Implementation Method 2
a method to improve the communication quality in a multipath environment using a passive repeater or an active type reflector (RIS: Reconfigurable Intelligent Surface)
Data Source
AI summary
The radio relay device receives control information from a radio base station. The radio relay device controls based on the control information, the relay state of at least a beam in relaying radio waves from a radio base station or a terminal without signal interpretation.