Gateway station rain attenuation resisting switching method and device suitable for high-throughput satellite communication

Abstract

The invention discloses a gateway station rain attenuation resisting switching method and device suitable for high-throughput satellite communication. The method comprises the following steps of: acquiring electric level values of tracking receivers of all the gateway stations; calculating and predicting rain attenuation values of all the gateway stations; sorting all the gateway stations according to the rain attenuation predicted values; matching a main gateway station with a standby gateway station; and determining a gateway station matching pair needing to be switched through threshold comparison. The device comprises a channel prediction module and a switching judgment module. In order to solve the problem that one or more gateway stations in N main gateway stations in a high-throughput satellite communication system may cause link interruption due to excessive rain attenuation and need to be switched to P standby gateway stations, a multi-gateway station transmission diversity switching scheme based on rain attenuation predicted value sorting is adopted, and all the gateway stations predict channels in advance; and after the gateway stations are sorted according to the predicted rain attenuation values, threshold judgment is carried out, so that the gateway stations complete switching before a feed link is interrupted, and the stability of service transmission is ensured.

Description

technical field [0001] The invention belongs to the technical field of satellite communication, and relates to a switching method and device for resisting rain attenuation of a gateway station during high-throughput satellite communication. Background technique [0002] As of 2019, there are more than 65 Ka-band high-throughput satellites (HTS) in orbit around the world, and the maximum capacity of a single satellite has reached 300Gbps (Viasat-2). The next-generation very high-throughput satellite (VHTS) is already in the development process. It will use the Q / V frequency band as the frequency of the feeder link, and fully allocate the Ka frequency band to the user link. In this way, the feeder link and the user link Links can get more bandwidth resources, and the system capacity of a single satellite will reach 1Tbps, thereby greatly reducing the unit bandwidth cost and enhancing the competitiveness of satellite broadband Internet access. However, the biggest problem face...

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is: for one or more of the N main gateway stations in the high-throughput satellite communication system due to excessive rain attenuation In the application scenario that may cause link interruption and need to be switched to P standby gateway stations, a method and device for anti-rain attenuation switching of gateway stations are provided. Through simple and practical switching, it can effectively solve the problem caused by the switching of existing gateway stations. In the method, the signal-to-noise ratio is difficult to accurately measure or the channel rain attenuation is difficult to accurately predict, which causes the difficulty of engineering implementation

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