Maritime on-demand communication method and device under satellite, air and ground collaborative architecture

Abstract

The embodiment of the invention provides a maritime on-demand communication method and device under satellite, air and ground collaborative architecture. The method comprises the steps that through judgment, if it is known that communication service needs to be provided for a ship user terminal based on a dynamic relay, control parameters of the dynamic relay are obtained through utilization of apreset optimization problem model; and operation of the dynamic relay is controlled according to the control parameters, and the communication service is provided for the ship user terminal through utilization of the dynamic relay. According to the maritime on-demand communication method and device under satellite, air and ground collaborative architecture provided by the embodiment of the invention, for a time varying user requirement in a fixed area resulting from movement of the ship user terminal, the control parameters of the dynamic relay are optimized, the dynamic relay provides the communication service for the ship user terminal in an operation process, a stable transmission rate between the dynamic relay and the ship user terminal is ensured, communication stability is ensured, moreover, a coverage range of a base station on a coast is expanded, and communication load of a broadband satellite is reduced.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of wireless broadband communication at sea, and in particular, to a method and device for on-demand communication at sea under a star-space-ground coordination framework. Background technique [0002] The satellite-space-ground collaborative architecture refers to a communication system composed of satellites, dynamic relays, ground base stations, and mobile terminals. It provides communication services for mobile terminals through satellites, dynamic relays, and ground base stations to ensure the communication needs of mobile terminals. Among them, the dynamic relay refers to the mobile relay in the air, and its spatial position and power will have an important impact on the data transmission rate of the mobile terminal in the satellite-space-ground cooperative communication system. [0003] For the sea area broadband communication network, due to the limited sea site, the sea-facing c...

AI Technical Summary

Problems solved by technology

However, when the low-altitude UAV serves the ship user terminal, the low-altitude UAV and the ship user terminal are in a moving state, and the relative movement of the two will cause dynamic changes in the communication distance between the low-altitude UAV and the ship user terminal, and make the fixed The needs of ship users in the area change with time, making the communication rate unstable. Therefore, it is necessary to change the path of low-altitude drones according to the needs of mobile users to ensure a stable communication rate.

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