Frequency spectrum sharing method for satellite communication and ground communication

Abstract

The invention provides a frequency spectrum sharing method for satellite communication and ground communication. A control station of the ground communication broadcasts a Beacon signal to a mobile station in a community; and a protection area and a sharing area are divided according to the coverage range of the ground communication Beacon signal. Under the condition that the effective omnidirectional radiation power of a satellite is not greater than the maximum effective omnidirectional radiation power, the satellite transmits signals to the mobile station by using the ground downlink communication spectrum and / or the satellite-specific downlink communication spectrum. When the mobile station is located in the protection area, the mobile station transmits signals to the satellite by using the satellite-specific uplink communication spectrum; when the mobile station is located in the sharing area, the mobile station transmits signals to the satellite by using the ground uplink communication frequency spectrum and / or the satellite-specific uplink communication frequency spectrum; and the satellite schedules appropriate ground uplink communication time-frequency resources and sets appropriate modulation and coding parameters for the mobile station to transmit signals to the satellite according to the interference intensity on the ground uplink communication spectrum.

Description

technical field [0001] The present invention relates to the field of communications, and more specifically, to a spectrum sharing method for satellite communications and terrestrial communications. Background technique [0002] In order to realize the increasingly rich maritime services in e-Navigation, the International Maritime Organization (IMO) and the International Association of Marine Aids to Navigation and Lighthouse Authorities (IALA) proposed VHF ( VHF, Very High Frequency) data exchange system (VDES, VHF Data Exchange System), the system includes not only the self-organizing communication mode without central control, but also the centralized resource scheduling communication mode with central control. Among them, the centralized resource scheduling communication method includes ground communication VDE-TER for ground shore station and mobile station communication, and satellite communication VDE-SAT for satellite and mobile station communication. The Internation...

AI Technical Summary

Problems solved by technology

However, there is a lack of a specific plan for the shore station to obtain the bulletin board information of the satellite space station, and in the current G1139 technical document of IALA, the channel configuration structure of VDE-SAT and TER is not uniform, especially the signaling design of the bulletin board is not uniform, it is difficult to guarantee The bulletin board signal will not be interfered, resulting in the situation that the bulletin board signal cannot be obtained

In addition, when the time-frequency resource is configured through the central control station, the existing technology does not provide a mechanism for monitoring the channel interference intensity on the shared spectrum, and it is difficult to guarantee the time-frequency resource while satisfying the quality of service (Quality of Service, QoS) of the system. maximize utilization

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