Satellite communication method and device

Abstract

The present disclosure relates to a satellite communication method and device, including setting the receiving signal range corresponding to each beam in the satellite, wherein different beams correspond to different receiving signal ranges. According to the receiving signal range corresponding to each beam, the receiving mode of the uplink signal of each beam is set. Each beam processes the received uplink signal of each user terminal according to the corresponding receiving mode. The disclosure uses the global satellite positioning data on the user side to assist in the implementation of beam-to-beam isolation, and utilizes on-board beam coordination to effectively reduce communication performance loss in beam overlapping areas and further improve system capacity. At the same time, the present disclosure has a small system overhead and a wide range of applications, and can greatly increase system capacity without occupying additional time and spectrum resources.

Description

technical field [0001] The present disclosure relates to the field of satellite communication, in particular to a satellite communication method and device. Background technique [0002] With the development of information technology and space technology, the field of satellite communication has also developed rapidly. The existing cellular mobile communication network only covers 5% of the earth's land area, and large areas such as oceans, deserts, and outer suburbs are not covered. Although these areas are inaccessible, there is still a need for networking. The related technology adopts multi-beam satellite communication to solve the networking problem. However, there is overlap between multiple satellite beams, resulting in the same user's signal being received by different beams, causing user signals in different divided spaces to interfere with each other. Since the propagation distances of different users of the satellite communication system to the satellite are bas...

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Problems solved by technology

However, there is overlap between multiple satellite beams, resulting in the same user's signal being received by different beams, causing user signals in different divisions to interfere with each other

Since the propagation distances of different users of the satellite communication system to the satellite are basically the same, and the receiving power is also basically the same, it will further deteriorate the interference between users, and in extreme cases, all users in the beam overlapping area will not be able to Effective communication, resulting in a large loss to the capacity of the entire system

In addition, the limited space on the satellite and insufficient processing power also limit the use of ground beamforming technology on the satellite to a certain extent

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