Beidou Short Message Low-Power Terminal Protocol
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Solution Overview
Problem
The existing Beidou short message communication systems are limited by high power consumption and large size, making them unsuitable for low-power Internet of Things and mobile phones, which restricts the popularization of Beidou short messages.
Innovation Solution
A Beidou short message communication method and system for low-power user terminals, which involves receiving outbound signals, determining a response beam, performing Doppler frequency compensation, constructing a short message access frame, and allocating time-frequency resource blocks to enable efficient communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If Beidou-2 short message system is used with high transmission power (5W-10W), then communication reliability is improved, but power consumption increases and terminal size becomes large
Solution Approach 1:
The patent changes the transmission power parameter from the conventional 5W-10W range to a lower range of 0.1W-2W by optimizing the communication protocol and signal processing techniques, thereby reducing power consumption while maintaining acceptable communication reliability for IoT applications
Solution Approach 2:
The patent implements dynamic power adjustment and adaptive communication strategies where the terminal can switch between different power levels and communication modes based on signal conditions and application requirements, optimizing the balance between reliability and power consumption
2Reliability
If Beidou-2 short message system is used with high transmission power, then communication reliability is improved, but terminal volume and weight increase
Solution Approach 1:
The patent reduces the power parameter from 5W-10W to 0.1W-2W, which directly enables the use of smaller, lighter power amplifiers and battery components in the terminal design, thereby reducing overall terminal weight and volume
Solution Approach 2:
The patent extracts and removes unnecessary high-power components and complex hardware from the terminal design by adopting a low-power communication protocol, keeping only the essential minimal components needed for reliable IoT communication
3Use of energy by moving object
If Beidou-3 short message is used with minimum transmission power of 2W, then power consumption is reduced, but short message function module cannot be integrated into low-power IoT and consumer mobile phones
Solution Approach 1:
The patent designs a universal short message function module that can be integrated into various low-power devices including IoT devices and consumer mobile phones by supporting multiple communication modes and adapting to different power supply conditions
Solution Approach 2:
The patent segments the communication functionality into modular components that can be selectively activated based on device capabilities and power availability, enabling flexible integration into different device types with varying power constraints
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 solution supports low-power Internet of Things and mobile phone services, improves the access service quality of low-power user terminals, and enables the mass application market for satellite Internet of Things and mobile phone services.
Implementation Method 1
These satellites (outbound transponders and inbound transponders) transmit the outbound signals sent by the ground central station and the inbound signals sent by the user machine
Implementation Method 2
determining a response beam according to the outbound signals, carrying out Doppler frequency compensation
Data Source
AI summary
A Beidou short message communication method and a system for a low-power user terminal are provided. The method includes following steps: by a user terminal, receiving outbound signals broadcast by a central station and forwarded by a satellite transponder, and constructing a short message access frame with a fixed length for transmission; by the central station, receiving and parsing the short message access frame, so as to realize the allocation of time-frequency resource blocks and transmit the time-frequency resource blocks to the user terminal; by the user terminal, transmitting a short message communication frame with a fixed format to the central station; by a communication receiving device of the central station, receiving and sequentially carrying out sampling preprocessing, anti-interference processing, rapid capture and tracking demodulation on the short message communication frame to obtain communication service information, and pushing receipt information to the user terminal to complete an information push.