A Novel Handover Control Strategy Combined with Multi-hop Routing in LEO Satellite Networks

To maintain satellite communication continuity, satellite handover is an important topic in Low Earth orbit (LEO) satellite system. Based on the deep study of LEO satellites motion and inter-satellite visibility, a position-based minimum delay strategy (PMDS) is proposed for Walker Star satellite co...

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Bibliographic Details
Published in2018 IEEE International Parallel and Distributed Processing Symposium Workshops (IPDPSW) pp. 845 - 851
Main Authors Duan, Chaofan, Feng, Jing, Chang, Haotian, Song, Bin, Xu, Zhikang
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.05.2018
Subjects
Delays
Handover
inter-satellite link
Low earth orbit satellites
Orbits
position information
propagation delay
Routing
satellite handover
Satellites
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DOI10.1109/IPDPSW.2018.00132

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Summary:To maintain satellite communication continuity, satellite handover is an important topic in Low Earth orbit (LEO) satellite system. Based on the deep study of LEO satellites motion and inter-satellite visibility, a position-based minimum delay strategy (PMDS) is proposed for Walker Star satellite constellation with inter-satellite links. This strategy is a distributed processing method and it is based on the position information of both users and selects the 'nearest' satellite as the access satellite when handover occurs. This strategy makes full use of the characteristics of the Walker Star constellation and taking into account the impact of routing, solves the handover issue between different satellites effectively. The simulation of propagation delay under different handover strategies are obtained by the Network Simulator version 2 (NS2). The results show that the proposed strategy can reduce the propagation delay while keeping the handover times acceptable and maintain a lower complexity.
DOI:10.1109/IPDPSW.2018.00132