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Location Manager based Handover Method for LEO Satellite Networks

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Author(s): Soumya Das | Debabrata Sarddar | Dipsikha Ganguly | Suman Kumar Sikdar | Sougata Chakraborty | Kunal Hui

Journal: International Journal of Computer Applications
ISSN 0975-8887

Volume: 44;
Issue: 12;
Start page: 43;
Date: 2012;
Original page

Keywords: LEO satellite | handover latency | location manager

ABSTRACT
Low Earth Orbit (LEO) satellite made a great impact to the scientists towards the end of the previous decade because of its some interesting features such as low propagation delay, low power requirements and the ability to communicate with handheld terminals. That's why future satellite networks are now conceived as complementary rather than competitive to terrestrial networks. But as the speed of LEO satellite is higher than Mobile Nodes (MN) and earth's speed, the no of handover occurrence is more which degrades the overall communication quality. Also the call blocking probability and forced call termination probability is more. To solve these problems, a number of handover methods have been proposed by different scientists. Here we have proposed a fast method for handover named Location Manager Based Handover method for LEO satellite networks where we have use Location Manager (LM) for reducing the scanning time. LM is used to store all the mobility pattern of all the satellites. To know how this method works, we run a set of simulations for handover latency, handover throughput and call blocking probability for our proposed method with the standard methods. Results show that this algorithm can significantly improve the overall communication performance.
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