A Satellite Handover Strategy Based on MIMO Technology in LEO Satellite Networks

This letter proposes a handover strategy for the links between satellites and gateway stations based on weighted bipartite graph in low earth orbit (LEO) satellite networks. To maximize the overall communication quality and balance the load of satellite networks, a maximum weight matching method is investigated by using Kuhn-Munkres (KM) algorithm. Then, we enhance KM algorithm, which is more suitable for the scene of satellite handover, and employ multiple-input multiple-output (MIMO) technology to further improve communication quality. Finally, we derive the achievable rate and validate the proposed handover strategy.

[1]  Christopher Jekeli,et al.  Geometric Reference Systems in Geodesy , 2006 .

[2]  Lidong Zhu,et al.  A Suboptimal Routing Algorithm for Massive LEO Satellite Networks , 2018, 2018 International Symposium on Networks, Computers and Communications (ISNCC).

[3]  Vincent W. S. Chan,et al.  Optimum power and beam allocation based on traffic demands and channel conditions over satellite downlinks , 2005, IEEE Transactions on Wireless Communications.

[4]  Fotini-Niovi Pavlidou,et al.  Satellite handover techniques for LEO networks , 2004, Int. J. Satell. Commun. Netw..

[5]  Syed Muhammad Adnan,et al.  Modular & COTS based power system for small LEO satellite , 2013, 2013 International Conference on Aerospace Science & Engineering (ICASE).

[6]  Naofal Al-Dhahir,et al.  Predicting the visibility of LEO satellites , 1999 .

[7]  Guyu Hu,et al.  A Graph-Based Satellite Handover Framework for LEO Satellite Communication Networks , 2016, IEEE Communications Letters.

[8]  F. Pavlidou,et al.  Analytic study of Doppler-based handover management in LEO satellite systems , 2005, IEEE Transactions on Aerospace and Electronic Systems.

[9]  Guyu Hu,et al.  A Satellite Handover Strategy Based on the Potential Game in LEO Satellite Networks , 2019, IEEE Access.

[10]  David Tse,et al.  Fundamentals of Wireless Communication , 2005 .