TELETRAFFIC MODEL CONSIDERING SUBSCRIBER AND SATELLITE MOBILITY IN THE TERRESTRIAL CELL SATELLITE BEAM HIERARCHICAL STRUCTURE

In this paper, we propose a teletraffic model and evaluate the perform ance in the terrestrial/satellite integrated mobile communication netw orks having hierarchical structure consisting of terrestrial microcell and satellite spot beam. In the proposed teletraffic model, both the subscriber terminal mobility in the terrestrial microcell and the sate llite mobility in the LEO satellite spot beam are considered. The over flow traffic from microcell can be accommodated by the satellite spot beam and is analyzed by IPP (Interrupted Poisson Process) which is oft en used to analyze non-random overflow traffic. Various reservation ch annels for handoff calls in terrestrial microcell and satellite spot b eam are considered. New calls initially directed to the satellite spot beam are also considered for reservation channels. Carried traffic, b locking, forced termination and non-completion probabilities are evalu ated for the overall integrated networks.