5G Base Station Beam Direction Planning for Satellite Interference
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Solution Overview
Problem
Interference from 5G base station devices to existing satellite communication systems degrades the performance of the 5G system by limiting the direction of electrical beams, reducing the number of deployable base station devices and capacity.
Innovation Solution
A program and processing device that determine the installation conditions for 5G base station devices by measuring interference power from different azimuth angles, defining restricted areas, and adjusting beam directions to avoid interference with satellite systems, allowing for increased deployment without beam limitations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the direction of the electrical beam of the base station device is limited to reduce interference to the existing system, then interference to the existing system is reduced, but the terminal device located in the limited direction cannot communicate with the base station device, so that the performance of the 5G system is degraded in terms of the number of deployed base station devices and capacity
Solution Approach 1:
The patent applies local quality by differentiating the treatment of beam directions based on their interference characteristics. Instead of uniformly limiting all beam directions, the system identifies specific restricted areas (azimuth angle ranges) where interference to the existing system occurs and applies directional constraints only to beams pointing toward these restricted areas. Beams directed toward non-restricted areas maintain full functionality, thereby preserving system capacity while reducing harmful interference locally.
Solution Approach 2:
The patent introduces a new dimension of analysis by incorporating azimuth angle information alongside traditional elevation angle beam control. This two-dimensional angular space (azimuth and elevation) allows for more precise interference management. By defining restricted areas in the azimuth angle dimension and combining this with elevation angle constraints, the system achieves more accurate beam direction control, enabling base station devices to avoid interfering with existing systems while maintaining communication capability in permitted directions.
2Object-affected harmful factors
If the largest antenna pattern of the base station device is used to calculate interference, then interference to the existing system is reduced, but the direction of the electrical beam is limited, reducing the number of deployable base station devices
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting beam direction parameters (azimuth and elevation angles) based on the operational requirements and interference constraints. Instead of using fixed antenna patterns, the system calculates optimal beam directions by considering the positions of both the base station device and existing systems, and by evaluating interference levels at different angular orientations. This allows the beam parameters to be optimized for each deployment scenario, maximizing the number of deployable base station devices while maintaining interference protection.
Data Source
AI summary
A processing device includes an acquirer, a definition unit, and a determiner. The acquirera acquires, when a signal is transmitted from each of a plurality of base station devices while changing an azimuth angle, interference power of a signal received by a target station for each combination of a base station device and an azimuth angle. The definition unit defines an azimuth angle range in which interference power equal to or greater than a threshold is included as a restricted area. The determiner determines a direction of a center of a beam of each of the plurality of base station devices so as to prevent the center of the beam of each of the plurality of base station devices from falling within the restricted area.