Radio Wave Reflector Layout for Blind Zone Coverage Containment
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Solution Overview
Problem
Existing radio transmission systems face challenges in eliminating blind zones and suppressing undesired radio wave emissions, particularly in environments with numerous structures and moving objects, which are exacerbated by the use of high-frequency bands like sub-6 and millimeter-wave bands.
Innovation Solution
A radio transmission system incorporating an electromagnetic-wave reflecting apparatus with a reflecting panel that reflects electromagnetic waves downward from a position lower than the panel's uppermost edge, using meta-surfaces to control reflection angles, thereby improving radio-wave coverage and reducing external emissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the number of base stations is increased to eliminate blind zones, then radio-wave coverage is improved, but cost increases
Solution Approach 1:
The patent introduces electromagnetic wave reflecting apparatus as an intermediary device between the base station and the blind zones. These reflectors redirect radio waves into areas that would otherwise be blocked by structures, eliminating blind zones without requiring additional base stations, thereby maintaining coverage reliability while controlling costs
Solution Approach 2:
The patent utilizes vertical dimension by installing reflecting apparatus at strategic heights and angles to redirect radio waves downward or sideways into blind zones. This three-dimensional wave redirection approach allows coverage extension without horizontal expansion of base station infrastructure
2Reliability
If radio waves are transmitted to cover the intended area, then communication coverage is improved, but emission to the outside increases causing interference
Solution Approach 1:
The patent employs reflecting apparatus with specific directional characteristics tailored to local geometric conditions. Each reflector is positioned and oriented to redirect waves precisely into its designated blind zone while its reflective properties and orientation are optimized to prevent waves from escaping into adjacent areas, thus containing emissions locally and reducing external interference
Solution Approach 2:
The patent converts the potentially harmful effect of radio wave emission into a beneficial directed reflection. By using strategically positioned reflectors, the system channels radio waves precisely where needed (into blind zones) while preventing unwanted dispersion, thus transforming what could be interfering emissions into useful targeted coverage
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
The system effectively reduces blind zones and suppresses radio wave emissions outside the intended space, enhancing communication efficiency while minimizing interference.
Implementation Method 1
an electromagnetic-wave reflecting apparatus disposed in a communication area of the base station and including a reflecting panel configured to reflect an electromagnetic wave in the predetermined frequency band
Data Source
AI summary
A radio transmission system capable of achieving both the improvement of a radio-wave propagation environment and the suppression of the emission of radio waves to the outside of the intended space is provided. A radio transmission system comprises: a base station configured to perform radio communication in a predetermined frequency band selected from frequencies from 1 GHz to 300 GHz; and an electromagnetic-wave reflecting apparatus disposed in a communication area of the base station and including a reflecting panel configured to reflect an electromagnetic wave in the predetermined frequency band, wherein the electromagnetic wave emitted from the base station impinges at a position lower than a position of an uppermost portion of a reflection surface of the reflecting panel, and the electromagnetic-wave reflecting apparatus reflects the electromagnetic wave incident on the reflecting panel downward with respect to the incident position.