Optical Antenna Beam Control for 3D Network Stability
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Solution Overview
Problem
Establishing a stable three-dimensional network for fifth-generation mobile communications that supports a large number of terminals over a wide area with low propagation delay and high-speed communication, while maintaining system capacity and avoiding radio frequency resource interference.
Innovation Solution
A radio relay apparatus with a floating radio relay station equipped with an optical communication section and a beam control system, using a controllable optical antenna to manage directional beams for efficient communication with multiple terminals and satellites, optimizing beam direction and power usage based on real-time information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a three-dimensional network is constructed using floating radio relay stations for fifth-generation mobile communication, then system capacity per unit area and simultaneous connection capability increase, but network stability and coverage uniformity become difficult to maintain
Solution Approach 1:
The patent applies dynamics by enabling floating radio relay stations to autonomously adjust their positions and orientations in three-dimensional space. The stations can dynamically change their spatial coordinates (x, y, z) and attitude angles to optimize network coverage and maintain stable connections with ground terminals, thereby resolving the contradiction between increasing system capacity and maintaining network stability.
2Speed
If optical communication is used for high-speed data transmission between floating relay stations, then communication speed increases, but beam alignment precision and stability become more challenging
Solution Approach 1:
The patent implements feedback mechanisms where floating radio relay stations continuously monitor their positions, orientations, and optical beam alignment status. Based on real-time feedback data, the stations automatically adjust their attitudes and beam directions to maintain precise alignment, thereby enabling high-speed optical communication while preserving beam alignment precision.
3Area of stationary object
If multiple optical antennas with different directivities are deployed to cover wide areas, then coverage area increases, but device complexity and control difficulty increase
Solution Approach 1:
The patent applies universality by designing floating radio relay stations with multiple optical antennas that can serve multiple functions. The same antenna system is used for both wide-area coverage and precise beam alignment, and the stations can adaptively switch between different antennas based on communication requirements, thereby increasing coverage area while managing system complexity through multi-functional integration.
Data Source
AI summary
In the mobile communications of the fifth generation or the like, a radio relay apparatus capable of stably over a wide area realize a three-dimensional network, in which a propagation delay is low, a simultaneous connection with a large number of terminal apparatuses in a wide-range and high-speed communication can be performed, and a system capacity per unit area is large, in radio communications with terminal apparatuses including devices for the IoT, and there is no influence on radio wave frequency resources, is provided. The radio relay apparatus comprises a floating object provided with a radio relay station and controlled to be located in a floating airspace with an altitude less than or equal to 100 [km] by an autonomous control or an external control, an optical communication section for performing optical communication with an optical communication destination via an optical antenna apparatus controllable to change outgoing directional beam, an information acquisition section for acquiring at least one of optical-beam control information provided with a radio relay station and a reception sensitivity of the optical communication section, and a beam control section for controlling a directional beam of the optical antenna apparatus based on information acquired by the information acquisition section.