Gateway selection algorithm for radio and optical hybrid satellites considering weather conditions

In this paper, we propose a gateway selection algorithm for radio and optical hybrid satellites considering weather condi-tion to maximize system throughput. To accommodate large number of communication requests, more and more capacity of satellite communication systems has been required to pro-vide communication links for remote area. To this end, com-bining radio and optical links can improve system throughput with high reliability. In radio and optical hybrid satellite com-munication systems, it is important to utilize site diversity technology and to change network structure according to weather condition and link status. In this paper, the radio and optical hybrid system is firstly modelled and problem setting to obtain gateway selection is described. Then, we propose an algorithm to solve the gateway selection problem based on weather condition and desired utilization ratio of radio and op-tical links. Finally, we conducted numerical simulations and verified the basic functions of the proposed algorithm.