Adaptive packet scheduling apparatus for uncapsulated IP packet data communication in interactive satellite communication system, and data receive apparatus and transmitting and receiving method using it

摘要

An adaptive packet scheduling device for uncapsulized data communication in a bi-directional satellite communication system, a data transmitting/receiving system using the device, and a transmission method are provided to directly transmit IP(Internet Protocol) packets without capsulizing the packets, while a terminal station can normally receive such data, thereby increasing transmission efficiency of the system. A classifier(22) classifies inputted IP packets according to each destination IP addresse, and delivers the classified packets to IP packet storage units(23). The IP packet storage units(23) individually store the classified IP packets. A framing unit(24) reads the individually stored IP packets in baseband frame length unit in accordance with an equivalent transmission method. A control information manager(21) determines transmission method of the IP packets by using channel reception state information of each terminal station and destination IP address lists, controls the classifier(22) to classify and deliver the inputted packets to the storage units(23), and controls the framing unit(24) so as to read the stored packets in the baseband frame length unit.