Satellite Communication Control for Predictive Beam-Overlap Interference
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Solution Overview
Problem
In satellite communication systems with non-polar orbits, overlapping coverage areas of ascending and descending satellites cause interference, reducing signal quality.
Innovation Solution
A control node predicts overlapping coverage areas using ephemeris information and sends control signals to adjust transmission resources of target satellites to minimize interference, allowing full resource utilization outside the overlapping interval.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If non-polar orbits are used for satellite communication, then wide coverage and terrain independence are achieved, but interference occurs in overlapping coverage areas reducing signal quality
Solution Approach 1:
The control node predicts overlapping coverage areas in advance by obtaining ephemeris information of multiple satellites and determining predicted overlapping areas where coverage areas of different satellites will overlap in the future. This preliminary identification allows proactive resource adjustment before interference occurs.
Solution Approach 2:
The system dynamically adjusts transmission resources based on predicted overlapping areas. The control node sends control signals to satellites to adjust their transmission resources (time, frequency, or power) specifically in predicted overlapping areas, making the resource allocation adaptive to the dynamic orbital positions and coverage overlaps.
2Object-affected harmful factors
If transmission resources are adjusted in overlapping intervals to reduce interference, then signal quality improves, but resource utilization decreases
Solution Approach 1:
The system applies different resource allocation strategies to different spatial locations. In predicted overlapping areas, transmission resources are adjusted to minimize interference. In non-overlapping areas, satellites can use full transmission resources without restriction. This localized resource management ensures interference reduction only where necessary.
Solution Approach 2:
The control node continuously monitors satellite positions through ephemeris information and continuously updates predictions of overlapping areas. This continuous monitoring and adjustment ensures that resource optimization is maintained over time, maximizing overall system productivity while preventing interference.
Data Source
AI summary
This application relates to communication control methods and devices. An example method includes: obtaining ephemeris information of a plurality of satellites; predicting overlapping information based on the ephemeris information, where the overlapping information indicates that a coverage area of a first beam of a first satellite and a coverage area of a second beam of a second satellite are to overlap in a target time interval, and the first satellite and the second satellite are different satellites in the plurality of satellites; and sending a target control signal to a target satellite based on the overlapping information, where the target control signal indicates the target satellite to adjust a target transmission resource used by the target satellite to transmit data in the target time interval, and the target satellite includes at least one of the first satellite or the second satellite.