SATELLITE MESH COMMUNICATION SYSTEM AND ACM CONTROL METHOD USING IT

摘要

The present invention relates to a satellite mesh communication system and an adaptive coding modulation (ACM) controlling method using the same. In a terminal station, a packet defective rate (or a ratio of noise to a signal) is individually measured for connection of a plurality of meshes, and the measured defective rate (or the ratio of noise to a signal) is notified to an opponent terminal station, so that ACM for connection of a plurality of meshes may be rapidly and dispersively controlled. The method comprises the steps of: setting star connection and mesh connection between terminal stations in a central station; receiving data bust including MODCOD information for controlling ACM through the set mesh connection through each terminal station; checking a mesh connection link state according to a receipt of the data bust through the terminal station; determining new requested MODCOD information in a unit of the set mesh connection through each terminal station according to the mesh connection link state, and transmitting a data bust including the determined requested MODCOD information to an opponent terminal station; and changing the previous MODCOD according to the requested MODCOD through the opponent terminal, and transmitting the data bust to the unit of mesh connection according to the changed MODCOD.