Adaptive handover scheme for LEO satellite communication system

Low Earth Orbit (LEO) satellites have appealing characteristics that make them most adequate for the provision of ubiquitous wireless service. However, frequently occurring handover across satellite spot beams (due to the high mobility of LEO satellites) is a serious shortfall that needs to be addressed. Handover management issues are solved by an efficient handover algorithm and proper resource allocation. An Adaptive Handover Scheme (AHS) is proposed to address handover issues in LEO satellite networks. The proposed scheme, utilizes a resource allocation strategy that considers the varying characteristics of the wireless channel. Furthermore, AHS provides users with improved Quality of Service (QoS) by keeping Connection Blocking Probability (CBP) and Connection Dropping Probability (CDP) at an acceptable level. The performance results of the developed handover algorithm show an improvement in the CDP and CBP of new and handover connections.