Satellite communication system user link interference avoidance method based on spectrum map

Abstract

The invention discloses a satellite communication system user link interference avoidance method based on a spectrum map in order to solve the problem how to realize reliable communication for a satellite mobile communication system in a complex electromagnetic environment. The method is implemented by the following technical scheme: the five links of data acquisition and preprocessing, spectrum map construction and distribution, spectrum availability prediction, interference avoidance decision generation and satellite-ground joint spectrum resource allocation are adopted; a user terminal anda satellite acquire the spectrum map information of the user links of a satellite mobile communication system together and report the information to a gateway station; the gateway station establishesand distributes a regional spectrum map to a network management center, and the network management center constructs a complete spectrum map of the satellite mobile communication system; the network management center uses a frequent pattern mining algorithm to predict the spectrum availability and sends a generated interference avoidance strategy to the gateway station; and the gateway station generates a resource allocation instruction, and the satellite and the user terminal reconfigure parameters according to the allocation instruction to complete system interference avoidance.

Description

technical field [0001] The invention relates to a method mainly used in the field of satellite mobile communication, which utilizes the advantages of spectrum map multi-dimensional data, combines data mining methods to predict spectrum availability, and realizes interference avoidance through satellite-ground joint spectrum resource allocation. Background technique [0002] With the development of modern information network technology, satellite networks (communication satellites, reconnaissance satellites, meteorological satellites, etc.), terrestrial Internet, mobile communication networks, ground-based node networks and other heterogeneous networks are fused and coexisting. There are inevitably overlapping frequency bands between heterogeneous networks. For example, satellite mobile communication systems use UHF frequency bands and S frequency bands, concentrated in the range of 100MHz to 4GHz, and this range is the key area for ground communication applications. Interfer...

AI Technical Summary

Problems solved by technology

Spectrum map is the premise and basis for accurate and real-time acquisition of spectrum data. It can describe spectrum data from multiple dimensions such as geographic location, frequency, time, and energy, so as to directly view spectrum information, such as occupied frequency bands, idle time periods, and coverage of specified frequency bands. Range, etc. However, the traditional spectrum map mainly considers the distribution of signal strength in space, and often seldom considers multiple dimensions such as time and frequency bands comprehensively.

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