Satellite Data Transmission via Auxiliary Information Reporting
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Solution Overview
Problem
Low Earth orbit satellite communication systems face challenges with seamless coverage due to limited satellite numbers and mobility, leading to communication latency and service disruptions in areas like forests and deserts, where cellular coverage is limited.
Innovation Solution
A data transmission method and apparatus for satellite communication that involves reporting auxiliary information from terminals to satellites, determining target information for data reporting, and transmitting data based on this information to ensure efficient and timely communication, including identifying the most suitable satellite for coverage and using trigger commands for data reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If low earth orbit satellites are used to provide communication coverage, then the communication range is large and it is not easily affected by land disasters, but the limited number of satellites and their mobility make it impossible to achieve seamless coverage, leading to communication latency and service disruptions
Solution Approach 1:
The terminal performs preliminary actions by reporting auxiliary information (data volume, periodicity, priority) to the first satellite before actual data transmission. The first satellite uses this information to determine and notify the terminal of target satellite information in advance, allowing the terminal to prepare for switching to the target satellite before the handover is needed, thus reducing communication latency and avoiding service disruptions.
Solution Approach 2:
The system dynamically adjusts satellite selection based on terminal mobility and coverage conditions. The terminal switches from the first satellite to a target satellite based on real-time coverage availability determined by the first satellite. This dynamic adaptation allows the system to maintain reliable communication despite satellite mobility and limited coverage, resolving the contradiction between communication reliability and latency.
2Device complexity
If the existing communication mode is adopted in areas with limited satellite coverage, then the system structure is simple, but it leads to communication latency and terminals not getting service in time
Solution Approach 1:
The terminal reports auxiliary information about its data transmission needs (data volume, periodicity, priority) to the first satellite in advance. The first satellite determines appropriate target satellite information and notifies the terminal before the terminal actually needs to transmit data. This preliminary action ensures the terminal has the necessary information to switch satellites quickly when needed, reducing service response time without significantly increasing system complexity.
3Area of stationary object
If seamless coverage is attempted with limited satellites, then coverage area is maximized, but the mobility of satellites relative to earth creates coverage gaps and service interruptions
Solution Approach 1:
The system accepts satellite mobility as a dynamic condition rather than trying to overcome it statically. The first satellite determines target satellite information based on predicted coverage availability, and the terminal switches satellites dynamically as they enter and exit coverage areas. This dynamic approach maintains coverage stability despite satellite mobility, allowing the system to maximize coverage area while maintaining stable service through coordinated satellite switching.
Data Source
AI summary
A data transmission method, apparatus, and storage medium that improves the efficiency of data transmission and availability of satellite communications. The efficiency and availability are improved by reporting auxiliary information to a first satellite, where the auxiliary information is information related to reporting data by the terminal; and receiving target information associated with the auxiliary information, where the target information is for the terminal reporting data.