Aggregate Interference Estimation Method for Space-Ground Co-frequency Sharing in Satellite Mobile Communication System

Abstract

The invention discloses a method for estimating aggregated interference of space-ground co-frequency sharing in a satellite mobile communication system. Suburbs, towns and cities of the communication system deployment ratio, deployment density and activity factor; determine the relative position of the satellite beam and the ground mobile communication system, calculate the same frequency interference of the satellite single beam by the ground mobile communication system; estimate all satellite beams and multiple satellites Aggregated co-frequency interference to satellites. The present invention fully considers the actual conditions such as the deployment density and activity factors of the ground mobile communication system, and improves the authenticity and accuracy of interference analysis; it can calculate and estimate the same-frequency interference of the ground mobile communication system to a satellite single beam, and can also estimate the interference of multiple Beam or even the same frequency interference of multiple satellites, so as to estimate the availability of the entire satellite mobile communication system, has a high practical value.

Description

technical field [0001] The invention relates to the technical field of satellite mobile communication, in particular to a method for estimating lumped interference of space-ground co-frequency sharing in a satellite mobile communication system. Background technique [0002] Compared with the terrestrial mobile communication system, the satellite mobile communication system has the obvious advantages of wide coverage and no limitation of terrain conditions. Disasters play an irreplaceable role in damage to terrestrial communication infrastructure. In recent years, the global mobile communication frequency resource competition is extremely fierce, especially the terrestrial mobile communication system, which is gradually developing to the frequency band used by traditional satellites, and the frequency competition between ground services and space services is intensifying. It is more and more common for communication systems to share the same frequency in the same area. [0...

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Problems solved by technology

[0004] The master's thesis "Research on Interference Coexistence of 5G System and Fixed Satellite Service" (Beijing University of Posts and Telecommunications, 2019) researched the coexistence of interference between 5G system and satellite system space station. Proceedings of the 15th Annual Conference on Satellite Communications, 2019), analyzed the interference caused by ground base stations to satellite uplink reception in different scenarios, but none of the above papers studied the aggregate interference of multi-satellite and multi-beam satellite communication systems

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