Research Article
An Improved Routing Strategy Based on Virtual Topology in LEO Satellite Networks
@INPROCEEDINGS{10.1007/978-3-030-69069-4_20, author={Chaoran Sun and Yu Zhang and Jian Zhu}, title={An Improved Routing Strategy Based on Virtual Topology in LEO Satellite Networks}, proceedings={Wireless and Satellite Systems. 11th EAI International Conference, WiSATS 2020, Nanjing, China, September 17-18, 2020, Proceedings, Part I}, proceedings_a={WISATS}, year={2021}, month={2}, keywords={LEO satellite networks Virtual topology Queue buffer Link cost}, doi={10.1007/978-3-030-69069-4_20} }- Chaoran Sun
Yu Zhang
Jian Zhu
Year: 2021
An Improved Routing Strategy Based on Virtual Topology in LEO Satellite Networks
WISATS
Springer
DOI: 10.1007/978-3-030-69069-4_20
Abstract
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.
