Abstract:

Due to the satellite motion with respect to the earth’ s surface and the aircraft’s mobility, it is required to handover frequently in the process of communicating , In This paper ,assuming that the aircraft’s  location and speed can be determined , we  proposes a suitable study for managing handover  in satellite constellations  for serving air traffic communication . The main objective of This study is  selecting  the  best scheme which reduce significantly contact failure Probability ,this  techniques  are: non priority, priority, and queuing handoff schemes ,in this paper  we are interested only in schemes that prioritize handover request in particular handoff queuing schemes. Channel allocation strategy (FCA) is employed, and the simulation results obtained concern: call blocking probability, handover failure probability, and average waiting time in the queue. Also simulation results are compared to choose the best one which reduces the contacts failureownership ratios. That supports more firm specific information is incorporated into stock prices as the ratio of foreign ownership increases.  

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