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An Adaptive Scheme for Efficient Utilization of Resources in Handover and New Channel Allocation in LEO Satellites

Debabrata Sarddar, Shubhajeet Chatterjee, Sougata Chakraborty, Jayanta Kumar Bagchi, Kunal Hui, Kalyan Kumar Das, Milton Samadder, Pulak Mazumder

Abstract


In satellite communication network, low earth orbit (LEO) satellite has become more popular than geostationary earth orbit satellite (GEO) due to their low propagation delay and low power requirements. During the course of movement of the LEO satellite, the area covered by its spot-beam (the footprint region of a satellite is divided into a number of clusters of cells which is known as spot-beam) is changing very rapidly. Thus the handover of connections from one spot-beam to other spot-beam is required. But their high relative speed and random direction of motion provide a serious barrier for such services to be made available to wireless communication. Throughout the last few years a plenty of researches had been done in this field of satellite handover management, but the problem remains unsolved. In this paper we are going to propose a new adaptive channel allocation scheme for efficient utilization of resources (channels) in handover and new channel allocation in LEO Satellite communication. We have divided the total footprint region in three sections according to the traffic load of different spot-beams (i.e. Urban Areas, Suburban Areas and Rural Areas) and for each section we have assigned different channel allocation techniques according to their traffic loads. This approach reduces the unnecessary complexity and unnecessary reservation of resources (channels) which in turn reduces the complexity of the communication network.

Keywords


Footprint, LEO, Channel Allocation, Spot-Beam, BS (Base Station).

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References


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