Communication System Using Satellite Feedback for Moving Devices
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Solution Overview
Problem
The limited communication opportunities between a moving communication device and a LEO satellite on the ground due to its constant movement pose challenges in maintaining effective communication.
Innovation Solution
A communication system and method where a second communication device, such as a GEO satellite, transmits notification information about the communication status to a transmission device, allowing it to determine and implement an optimal transmission method for data transfer to the moving communication device, thereby enhancing communication probability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If LEO satellite is used for communication with moving devices, then communication coverage is improved, but communication probability decreases due to constant satellite movement
Solution Approach 1:
The patent implements a feedback mechanism where the moving communication device reports its position and communication status to the base station, which then adjusts transmission parameters (time, frequency, power) dynamically. This closed-loop feedback system enables the base station to optimize communication opportunities based on real-time satellite position and device status, resolving the contradiction between wide coverage and reliable communication.
Solution Approach 2:
The patent applies dynamic adjustment of transmission parameters including time slots, frequency resources, and power levels based on the moving device's current position and the LEO satellite's orbital status. This dynamic adaptation allows the system to maintain reliable communication probability while preserving the wide coverage advantage of LEO satellites.
2Reliability
If transmission parameters are dynamically adjusted for moving devices, then communication probability is improved, but system complexity increases
Solution Approach 1:
The patent introduces a base station as an intermediary that centralizes the complexity of parameter adjustment. The base station receives position information from moving devices, determines optimal transmission parameters based on LEO satellite status, and coordinates communication resources. This intermediary approach improves communication probability while containing system complexity within the base station rather than distributing it across all devices.
3Reliability
If communication opportunities are increased for moving devices, then communication probability is improved, but signal collisions increase
Solution Approach 1:
The patent segments communication resources into different time slots, frequency resources, and power levels for different moving devices. The base station allocates these segmented resources dynamically based on device positions and LEO satellite visibility, allowing multiple devices to communicate simultaneously without signal collisions while maintaining high communication probability.
Data Source
AI summary
A second communication device transmits notification information related to a communication status between a transmission device and a first communication device to the transmission device. The transmission device determines a transmission method of data to the first communication device on the basis of the notification information received from the second communication device, and transmits the data to the first communication device by the determined transmission method.