Satellite communication system and method for transmitting data

摘要

A satellite communication system includes at least one base station, at least one satellite that can be brought into communication connection with the base station for data transmission, and a plurality of receivers adapted to receive signals transmitted from the satellite. The communication system is designed to transmit data in at least one uplink data stream from the base station to the satellite with a first data transmission rate and to transmit data in at least one downlink data stream from the satellite to the receivers with a second data transmission rate. The first data transmission rate is lower than the second data transmission rate and the satellite is provided with a data storage adapted to store the data transmitted from the base station to the satellite and to supply the data provided for the transmission to the receivers.

主权项

1. A satellite communication system comprising:
a base station; a satellite communicatively connected with the base station for data transmission; and a plurality of receivers configured to receive signals transmitted from the satellite, wherein the satellite is provided with a data storage device configured to store the data transmitted from the base station to the satellite and to supply the data provided for the transmission to the plurality of receivers, wherein the satellite communication system is configured to:
transmit data of a given data stock in at least one uplink data stream from the base station to the satellite with a first data transmission rate, andtransmit corresponding data of said given data stock in at least one downlink data stream from the satellite to the plurality of receivers with a second data transmission rate, said at least one downlink data stream being an on demand data stream, the demand being on either or both of a transmit side or a receive side, wherein a bandwidth of the uplink data stream is different from a bandwidth of the downlink data stream, the first data transmission rate is lower than the second data transmission rate, and a data transmission protocol of the uplink data stream is different from a data transmission protocol of the downlink data stream, and wherein the satellite communication system includes a modulator that is provided with a reprogrammable processor so that different downlink transmission protocols can be generated, independent from the satellite uplink transmission protocol.