Satellite Beam Switching for Data Transmission Reliability
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Solution Overview
Problem
In satellite communication systems, the limited service time of a single beam can lead to data transmission interruptions due to the satellite's movement, especially in cases where repetitive data transmission is required, causing reliability issues.
Innovation Solution
The method involves determining and switching to a second beam when the first beam can no longer provide service, either from the same satellite or a different satellite, and providing updated transmission indication information to ensure data transmission completion within a target time period without switching beams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the satellite uses a single beam for data transmission with a terminal, then the transmission can be simple and direct, but the service time is limited and transmission interruptions occur due to satellite movement
Solution Approach 1:
The patent determines a second beam in advance before the first beam's service time expires. The network device performs beam determination proactively based on predicted satellite movement and terminal position, ensuring seamless transition before the current beam becomes unavailable, thus maintaining transmission reliability without interruption.
Solution Approach 2:
The patent implements dynamic beam switching by determining a second beam that can continue providing service after the first beam's service time expires. The system adapts to satellite movement by selecting alternative beams based on real-time position information and predicted trajectories, transforming the static single-beam approach into a dynamic multi-beam strategy.
2Reliability
If the satellite switches to a second beam to continue service, then transmission reliability improves, but the system complexity increases due to beam management
Solution Approach 1:
The patent employs feedback mechanisms where the terminal reports position information and service status to the network device. Based on this feedback, the network device determines appropriate beam switching timing and selects the second beam, creating a closed-loop control system that manages complexity through intelligent decision-making rather than exhaustive beam management.
Solution Approach 2:
The terminal actively participates in the beam switching process by monitoring service quality and triggering beam reselection when needed. The terminal can independently determine alternative beams or request beam switching from the network device, distributing the complexity management burden and enabling more efficient beam transitions.
3Reliability
If the satellite extends service time through multiple beams, then transmission reliability improves, but the time required for beam switching and setup increases
Solution Approach 1:
The patent determines the second beam in advance before the first beam's service time expires, performing beam preparation proactively. By calculating predicted satellite and terminal positions ahead of time, the system identifies suitable alternative beams beforehand, enabling instantaneous switching without transition delays when the beam change becomes necessary.
Solution Approach 2:
The patent ensures continuous data transmission by overlapping the service periods of the first and second beams. The second beam is selected to provide service that continues from where the first beam expires, creating seamless coverage without gaps or interruptions in the useful transmission action, thereby eliminating transition time losses.
Data Source
AI summary
A data transmission method includes: in response to determining that data transmission performed with a terminal by means of a first beam has not ended, and the first beam is unable to continue to provide a service for the terminal, determining a second beam; and switching to the second beam.