A method for accessing multiple transmission systems in a space-based communication network
An access method and communication network technology, applied in the field of multi-transmission system access to space-based communication networks, can solve the problems of restricting access of different types of users, achieve the effects of reducing business volume, easy implementation, and simplified processing procedures
Active Publication Date: 2021-11-19
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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Problems solved by technology
The traditional on-board switching system only has a single downlink or uplink transmission system in a single beam, which limits the access of different types of users
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[0046] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0047] Such as figure 1 As shown, the entire space-based communication network is divided into two parts: the space-based backbone network and the space-based access network. The space-based backbone network is composed of satellite nodes and ground gateway stations interconnected by laser or high-speed The off station is connected to the ground backbone network. Each satellite responsible for access has one or more downlink transmission schemes and one or more uplink transmission schemes. Each downlink transmission system corresponds to one or more modulators of the satellite, and each uplink transmission system corresponds to one or more demodulators of the satellite. Each satellite terminal usually only uses one downlink transmission scheme and one uplink transmission scheme in a period of time. The various terminal access syste...
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The invention discloses an access method of a multi-transmission system in a space-based communication network, belonging to the technical field of satellite communication. The invention is used to solve the access problem when multiple reception transmission systems and multiple transmission transmission systems exist simultaneously in the satellite beam. To this end, each beam on the star is interconnected with the modem equipment through a splitter combiner or / and an intermediate frequency matrix. Group modem devices by transport scheme. Each group of modem equipment is interconnected with the service adaptation equipment through the switching equipment, and is connected with the backbone network switching equipment through the service adaptation. Through the three-level switching mode of beam-modem-in-system switching-backbone network switching, the terminal access of the multi-transmission system and the flexible scheduling of modem resources are realized.
Description
technical field [0001] The invention relates to the technical field of communication, in particular to a method for realizing multi-transmission system access to a space-based communication network, and belongs to the technical field of satellite communication. Background technique [0002] In the field of satellite communication, with the introduction of laser links and low-orbit high-capacity satellites, space-based high-speed satellite communication networks have begun to appear, such as Starlink constellation, OneWeb constellation, and Hongyun constellation of China Aerospace Science and Industry Corporation. The transmission system includes modulation method, coding method, multiple access method and channel allocation method, etc. Different transmission schemes usually require different modem control techniques (resource allocation strategies, etc.). [0003] Different types of users usually require different transmission systems to access the space-based high-speed s...
Claims
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IPC IPC(8): H04B7/185
CPCH04B7/18513
Inventor 蒋洪磊王立忠李嘉席
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP