Space-based mobile communication system and communication method

Abstract

The invention discloses an air-base mobile communication system and method, comprises at least a user terminal station, a satellite access network which is consisted of a plurality of satellites and a ground core network which is consisted of a plurality of said gateways. The user terminal station is used for establishing a wireless communication connection with the satellite access network and realizes the bidirectional data transfer. The satellite access network is used for processing and forwarding the communication data between two user terminal stations or between the user terminal and the gateway station. A route and exchange processing module, which is arranged in the satellite, is used for establishing a communication path between the satellites in the satellite access network. The ground core network is used for controlling and managing the whole communication system. The steps of the method are as follow: network registration, service application and accessing control, establishing communication connection, communication connecting maintenance and communication connection disassembly. The invention makes the satellite communication system much less reliable to the ground nodes, reduces the deployment of the ground control station and simplifies the function of the ground control device.

Description

technical field [0001] The invention relates to a satellite communication system and a communication method, in particular to a space-based mobile communication system and a communication method based on a space-based system (a system with satellites as the core) and capable of autonomous routing exchange on the satellite. It belongs to the field of aerospace information. Background technique [0002] The space-based mobile communication system is based on a satellite network (space-based), and uses the excellent coverage characteristics of satellites to realize information access and transmission to mobile users in a large area (or the world). The space-based mobile communication system has the characteristics of wide coverage, flexible and rapid networking, and flexible information access. It has become an important part of the next generation of mobile communication (4G) and the national information highway. [0003] Different from the ground communication network, the s...

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Problems solved by technology

[0013] The Iridium system based on on-board circuit switching does not have on-board autonomous routing and switching capabilities. All communications in the system must first establish an end-to-end connection path, and the connection path establishment, maintenance, and removal functions are all controlled by ground equipment. and management, therefore, the network architecture and communication methods of the Iridium system are not suitable for bursty data services based on packet transmission, especially cannot meet the transmission requirements of multimedia integrated services

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