Satellite mobile communication system air-ground same-frequency common lumped interference estimation method
A technology for satellite mobile communication and interference estimation, which is applied in the field of aggregated interference estimation for space-ground co-frequency sharing in satellite mobile communication systems, can solve problems such as the aggregated interference of multi-satellite and multi-beam satellite communication systems that have not been studied, and achieve high practical value, Effects that increase authenticity and accuracy
Active Publication Date: 2021-07-13
军事科学院系统工程研究院网络信息研究所
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[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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[0042] In order to better understand the contents of the present invention, an example is given here.
[0043] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0044] Such as figure 1 As shown, the terrestrial mobile communication system IMT-T is composed of several scattered ground radio frequency terminals. The ground radio frequency terminals include base stations and ground mobile terminals. The base station is denoted as BS, and the ground mobile user terminal is denoted as UE; S is composed of multiple multi-beam satellites in the space segment, ground gateway stations and several satellite mobile user terminals; both the IMT-S system and the IMT-T system adopt frequency division multiplexing technology, and the IMT-T system and the IMT-S system are in the same When the same frequency is shared within the area, the ground radio frequency terminal will interfere with the uplink of the IMT-S system.
[0045] The pre...
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The invention discloses a satellite mobile communication system air-ground same-frequency common lumped interference estimation method, which comprises the following steps of: determining a radio frequency terminal type needing to be counted according to a working mode of a ground mobile communication system in a region range needing to be estimated; acquiring a suburb, town and city deployment proportion, deployment density and activity factors of the ground mobile communication system; judging the relative position of the satellite beam and the ground mobile communication system, and calculating the same frequency interference of the ground mobile communication system on the satellite single beam; and estimating the same-frequency lumped interference suffered by all beams of the satellites and the plurality of satellites. According to the method, actual conditions such as deployment density and activity factors of the ground mobile communication system are fully considered, and the authenticity and accuracy of interference analysis are improved; the same-frequency interference of the ground mobile communication system on the satellite single beam can be calculated and estimated, and the same-frequency interference on multiple beams and even multiple satellites can be estimated, so that the availability of the whole satellite mobile communication system is estimated, and the method has 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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IPC IPC(8): H04B17/345H04B7/185
CPCH04B7/18534H04B17/345
Inventor 张弛何元智
Owner 军事科学院系统工程研究院网络信息研究所
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