Satellite Interference Area Mapping for Terrestrial Access Networks
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Solution Overview
Problem
Existing communication systems fail to accurately identify terrestrial access network devices that cause interference to satellite signals, leading to degraded satellite service quality due to signal overlap.
Innovation Solution
A method and apparatus for determining interference area information by a first network device, using ephemeris information, frequency band data, and EIRP to identify and manage terrestrial access network devices that interfere with satellite services, allowing for power reduction or signal cessation to mitigate interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If terrestrial access network devices transmit signals in frequency bands overlapping with satellite frequency bands, then terrestrial communication coverage is improved, but satellite service quality deteriorates due to signal interference
Solution Approach 1:
The patent introduces a network device as an intermediary that coordinates between satellite and terrestrial access network devices. This intermediary determines interference area information and transmits it to base stations, enabling them to adjust transmit power or frequency bands to avoid interfering with satellite services while maintaining terrestrial communication coverage
Solution Approach 2:
The patent implements dynamic adjustment of terrestrial access network device parameters based on satellite interference area information. Base stations dynamically change transmit power, frequency bands, or other parameters according to the determined interference areas, allowing the system to adapt to changing satellite positions and service requirements
2Reliability
If transmit power of terrestrial access network devices is reduced to avoid satellite interference, then satellite service quality is improved, but terrestrial communication coverage and signal strength deteriorate
Solution Approach 1:
The patent applies local quality adjustment by determining specific interference areas and applying power reduction or frequency avoidance only within those localized regions. Base stations maintain normal transmit power and frequency bands outside the interference areas, thereby preserving terrestrial communication coverage while protecting satellite services from interference
3Reliability
If frequency bands of terrestrial access network devices are adjusted to avoid satellite frequency bands, then satellite service quality is improved, but terrestrial communication efficiency deteriorates due to frequency reallocation
Solution Approach 1:
The patent applies partial action by adjusting frequency bands or transmit power only for terrestrial access network devices located within determined interference areas. Base stations outside these areas continue operating on their original frequency bands without modification, thereby maintaining terrestrial communication efficiency while providing protection for satellite services where needed
Data Source
AI summary
A method for determining interference area information, a communication apparatus, and a communication system includes a first network device determines a coverage area of a satellite. The first network device determines interference area information based on a frequency band used by the satellite and a frequency band used by an access network device within the coverage area, where the interference area information includes identification information of at least one access network device within the coverage area, and there is an intersection between a frequency band used by the at least one access network device and the frequency band used by the satellite.