Terminal Satellite Message Querying for Network-Free Communication
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Solution Overview
Problem
Current satellite communication systems, such as BeiDou short packet communication, are limited to sending messages in environments without a network and receiving messages in environments with a network, restricting their application scenarios and communication assurance.
Innovation Solution
A communication system and method that enables a terminal device without a network connection to actively query and receive satellite messages by sending a request packet to a satellite, allowing the server to retrieve and deliver the messages, and supports message display and reply functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If satellite communication only implements sending messages in environment without network and receiving messages in environment with network, then the system complexity is reduced, but the adaptability and application scenarios are limited
Solution Approach 1:
The patent implements dynamic adaptation of communication modes based on network availability. The terminal device can switch between satellite communication mode (when network is unavailable) and normal network communication mode (when network is available), enabling the system to adapt to different environmental conditions without requiring a completely separate system for each scenario
Solution Approach 2:
The satellite communication system is designed to serve multiple functions: it can send messages when network is unavailable, receive messages when network is available, and integrate with existing network communication systems. This multi-functionality expands the application scenarios while maintaining system coherence
2Reliability
If terminal device actively queries and receives satellite messages, then the communication assurance is improved, but the energy consumption increases
Solution Approach 1:
The server stores received messages in advance and the terminal device maintains a query mechanism that checks for new messages periodically. This preliminary preparation and structured querying approach ensures reliable message delivery while managing energy consumption through efficient query timing and mechanisms
Solution Approach 2:
The system implements a feedback mechanism where the terminal device queries the server for received messages and the server responds with the message content. This feedback loop ensures communication assurance by confirming message receipt and delivery status, while the feedback structure can be optimized to reduce unnecessary energy consumption
Data Source
AI summary
A communication system, method and a terminal device enable a terminal device in a state without a network connection to send a satellite message, also actively query and receive a satellite message and extend an application scenario of the satellite message and improve communication assurance for a user. The system may include at least a first terminal device and a server. The server may store at least one satellite message sent to the first terminal device. In response to an operation that the user requests to receive a satellite message, the first terminal device sends a query request packet to the server through a satellite. When finding at least one satellite message based on a user identifier on the first terminal device, the server returns a first satellite message in the at least one satellite message to the first terminal device.