Relay Antenna Direction Control for Dense IoT Signal Separation
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Solution Overview
Problem
The challenge of deteriorating communication reliability arises when LEO satellites receive signals from densely located IoT terminals, as the reception beam performance deteriorates due to mismatched directions between the satellite's reception array and the terminal locations, leading to ineffective signal separation.
Innovation Solution
A relay device with a reception antenna direction control unit adjusts its reception direction based on estimated dense district information, ensuring alignment with high-density terminal locations, thereby improving signal separation and communication reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the LEO satellite uses a fixed reception beam direction, then the device complexity is reduced, but the signal separation performance deteriorates when terminal directions differ from the front direction
Solution Approach 1:
The patent applies dynamics by making the reception beam direction adjustable rather than fixed. The satellite terminal performs reception beam control to dynamically adjust the beam direction toward the dense district where IoT terminals are located, allowing the system to adapt to different terminal positions while maintaining signal separation performance
Solution Approach 2:
The patent implements feedback by having the satellite terminal estimate the dense district based on received signals and use this information to control the reception beam direction. This closed-loop approach ensures the beam is directed toward areas with high terminal density, improving signal separation without significantly increasing system complexity
2Reliability
If the LEO satellite adjusts reception beam direction to match terminal locations, then signal separation performance is improved, but the device complexity increases
Solution Approach 1:
The patent applies self-service by enabling the satellite terminal to autonomously estimate the dense district from received signals and automatically adjust its own reception beam direction without requiring complex external control systems. This reduces the overall system complexity while maintaining improved signal separation performance
3Measurement precision
If the reception beam is sharpened in the front direction, then signal separation performance is improved, but communication reliability deteriorates when terminal directions differ from the front direction
Solution Approach 1:
The patent resolves this contradiction by making the beam direction dynamic. The reception beam is sharpened in the direction of the dense district rather than a fixed front direction, allowing the system to maintain both high signal separation performance and reliable communication regardless of terminal positioning
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 enhances communication reliability by aligning the reception antenna direction with the dense district of IoT terminals, mitigating signal separation issues and maintaining consistent communication performance.
Implementation Method 1
a first reception unit configured to receive signals transmitted from the plurality of first communication devices through a reception antenna
Implementation Method 2
a direction control unit configured to control a reception direction of the reception antenna based on dense district information
Data Source
AI summary
A relay device that relays wireless signals transmitted from a plurality of first communication devices to a second communication device while moving includes: a first reception unit configured to receive signals transmitted from the plurality of first communication devices through a reception antenna; and a direction control unit configured to control a reception direction of the reception antenna based on dense district information which is estimated based on the reception of the signals and indicates a district where the first communication devices are located with high density exceeding a predetermined reference.