Low Earth Orbit (LEO) satellite networks will play an important role in the
evolving information infrastructure. Satellites in the low earth orbits pr
ovide communication with shorter end-to-end delays and efficient frequency
usage. However, some problems need to be solved before LEO satellite system
s can be successfully deployed. One of these problems is the handover manag
ement. The objective of this paper is to survey the basic concepts of LEO s
atellite networks and the handover research.