With the increasing scale of low Earth orbit (LEO) satellite networks, the satellite network topology may become more and more complex. In order to cope with local congestion and link disruption with the aid of path planning, a virtual topology based improved routing (VTIR) scheme is proposed, which can be considered as a kind of node feedback routing (NFR) To be specific, in the proposed VTIR scheme, the orbit-period is divided into time slices, and the dynamic topology is also converted into a static topology. Moreover, both queue buffer state feedback and connection state feedback are considered in routing-path computation, resulting in that the link cost may be determined by a combination of distance, congestion, and link state. Simulation results show that compared with the conventional snapshot scheme, the proposed VTIR scheme can alleviate local congestion by extending traffic to idle links, without increasing packet loss rate.
An Improved Routing Strategy Based on Virtual Topology in LEO Satellite Networks
Lect.Notes Social.Inform.
International Conference on Wireless and Satellite Systems ; 2020 ; Nanjing, China September 17, 2020 - September 18, 2020
28.02.2021
11 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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