Relay-Based IoT Terminal Startup Across Different LPWA Frequencies
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Solution Overview
Problem
Existing wireless communication systems require a separate circuit on the ground-side device to receive a startup signal from a satellite, making IoT terminals expensive and complex, as different LPWA schemes necessitate different frequency reception circuits.
Innovation Solution
A wireless communication system with a mobile collection station device transmitting a terminal startup signal at a second frequency, relay station devices relaying a predetermined signal at a first frequency, and terminal station devices starting up and transmitting data signals after receiving the relayed signal, all without needing a separate startup signal reception circuit on the ground-side.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate circuit to receive startup signal frequency is mounted on the terminal side, then the terminal can receive startup signals from satellites, but the terminal becomes expensive and complex
Solution Approach 1:
The patent introduces a relay station as an intermediary device between the satellite and the terminal. The relay station receives the startup signal from the satellite and retransmits it to the terminal, eliminating the need for the terminal to have a separate startup signal reception circuit. This mediator approach resolves the contradiction by maintaining reliable startup signal reception while reducing terminal complexity
Solution Approach 2:
The patent extracts the startup signal reception function from the terminal and relocates it to the relay station. By taking out this complex function from the terminal device, the terminal no longer needs to mount a separate circuit for receiving startup signals at different frequencies, thus reducing its complexity and cost while maintaining the capability
2Adaptability or versatility
If a separate circuit to receive startup signal frequency is mounted on the terminal side for each LPWA scheme, then the terminal can support multiple schemes, but the terminal becomes more expensive
Solution Approach 1:
The relay station serves as a universal device that handles startup signals for multiple LPWA schemes. Instead of requiring the terminal to have separate circuits for each scheme, the relay station provides a unified interface that accommodates different LPWA frequency schemes, thereby achieving versatility without increasing terminal complexity
Solution Approach 2:
The relay station acts as an intermediary that translates and adapts startup signals from satellites to match different LPWA schemes used by terminals. This mediator approach allows the terminal to support multiple LPWA schemes through a single standardized interface, resolving the contradiction between adaptability and complexity
Data Source
AI summary
An aspect of the present invention includes a mobile collection station device, one or more relay station devices, and one or more terminal station devices, the mobile collection station device is configured to transmit a terminal startup signal for starting up the terminal station device at a second frequency different from a first frequency which is a transmission frequency of the terminal station device, the relay station device is configured to transmit a predetermined signal at the first frequency when the terminal startup signal from the mobile collection station device is received, and the terminal station device is configured to start up the terminal station device and then to transmit a desired data signal to the mobile collection station device when the predetermined signal from the relay station device is received.