Interference Avoidance Method for User Links of Satellite Communication System Based on Spectrum Map

Abstract

The method for avoiding user link interference of a satellite communication system based on a frequency spectrum map disclosed by the invention aims to solve the problem of reliable communication of a satellite mobile communication system in a complex electromagnetic environment. It is realized through the following technical solutions: the method adopts 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. User terminals and satellites jointly acquire satellites. The spectrum map information of the user link of the mobile communication system, and report the information to the gateway station; the gateway station establishes a regional spectrum map and distributes it to the network management center, and the network management center builds a complete spectrum map of the satellite mobile communication system; the network management center uses frequent The pattern mining algorithm predicts the availability of the spectrum, and sends the generated interference avoidance strategy to the gateway station; the gateway station generates resource allocation instructions, and satellites and user terminals reconfigure parameters according to the allocation instructions 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...

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