Aerial Base Station Interference Reduction in Heterogeneous Networks
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Solution Overview
Problem
Aerial base stations often interfere with terrestrial base stations due to overlapping frequency bands, leading to increased delays and low data rates for users in affected areas, as they may not be aware of the frequencies used by terrestrial base stations and can create interference if operating in the same frequency bands.
Innovation Solution
The aerial base station determines the operational frequency bands of nearby terrestrial base stations through handover requests and adjusts its frequency, altitude, location, or power output to minimize interference, selecting a different frequency or modifying its coverage zone to avoid overlapping frequencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If aerial base stations operate in overlapping frequency bands with terrestrial base stations, then service coverage and capacity are improved, but interference between aerial and terrestrial base stations increases
Solution Approach 1:
The aerial base station proactively determines the operational frequency bands of nearby terrestrial base stations through handover requests before causing interference. This preliminary action allows the aerial base station to adjust its frequency, altitude, location, or power output in advance to minimize interference while maintaining service coverage.
Solution Approach 2:
The aerial base station dynamically adjusts operational parameters such as frequency, altitude, location, or power output based on the determined frequency bands of terrestrial base stations. By changing these parameters, the aerial base station can avoid overlapping frequencies and reduce interference while maintaining adequate service coverage.
2Object-affected harmful factors
If aerial base stations adjust frequency, altitude, location, or power output to minimize interference, then interference with terrestrial base stations is reduced, but device complexity increases
Solution Approach 1:
The aerial base station autonomously determines the operational frequency bands of terrestrial base stations through handover requests and independently decides on parameter adjustments to minimize interference. This self-service approach reduces the need for complex external coordination systems while enabling the aerial base station to adapt to terrestrial network conditions.
Data Source
AI summary
Aspects of the subject disclosure may include, for example, an aerial base station determining operating frequencies of terrestrial base stations, and taking one or more actions to reduce the potential for interference between the aerial base station and the terrestrial base stations. Actions taken by the aerial base station may include changing frequency, changing altitude, changing location, and changing transmit power. Other embodiments are disclosed.