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CONCEPTUAL MODEL OF DATA ROUTING IN A MULTI-SATELLITE LOW-ORBIT COMMUNICATION SYSTEM

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The features of data routing in a multi-satellite low-orbit system providing communication of ground subscribers with each other and with spacecraft are investigated. The issues of constructing an orbital constellation, in which communication satellites form a network segment with a static topology, are considered. In this case, routing, in fact, boils down to solving two problems: the search for communication satellites that are in the zone of radio visibility of communication session respondents, and the search for data transmission routes in inter-satellite communication lines. To solve the first problem, an approach based on simulation of the structure of the orbital group is proposed. To solve the second problem, a method is developed that provides a search for routes with the account for current load of communication lines and balancing traffic in general. The lifetime of communication lines between the communication satellites and the respondents of communication sessions is limited by the time spent by the satellites in the radio visibility zones. In this regard, in addition to establishing initial connections, the task of moving the established connections is also considered.

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