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Handover Management in LEO Satellite Network using Area and Angle Based Algorithm
Debabrata Sarddar,Priyajit Sen,Himadri Biswas 보안공학연구지원센터 2016 International Journal of Grid and Distributed Comp Vol.9 No.8
LEO satellites are nearer to the earth’s surface than that of the other satellite systems. LEO satellites revolve round the earth is in the range from 500-1500km from the surface of the earth. The satellite is placed closer to the surface of the earth. If the height of the satellite is increased by increasing the power of the equipment used in the satellite system, the beam of the satellite cover a wide area in the surface of the earth. The radius of the foot print will increase as the height will increase and as the radius will increase the area of coverage will also increase. Height (h) is directly proportional to the radius(r) and area (A) is directly proportional to the square of the radius. Thus, the number of satellite required to cover the whole earth will decrease. The handoff failure will be decreased.
Central Controller Framework for Mobile Cloud Computing
Debabrata Sarddar,Priyajit Sen,Manas Kumar Sanyal 보안공학연구지원센터 2016 International Journal of Grid and Distributed Comp Vol.9 No.4
Now-a-days Mobile-Cloud Computing is a global computing infrastructure. Mobile-Cloud computing is the combination of mobile computing and cloud computing. Today’s smart phones are facing problem of small size and low battery life. One of the solutions to the problem of size of the mobile devices is by using the mobile device via extra touchpad device either by wireless fidelity network or Bluetooth. Low battery can be replaced by a powerful battery. The problem in cloud network is the higher response time of nodes while performing data communication through co-operative caching. This problem can be overcome by placing a Central Controller device as a hub in star topology network. The Central Controller device keeps track of the status of all other devices during the communication by running passive scan over the devices.