A satellite communication system comprising: a satellite as a relay station (2-1) and another satellite as an another relay station (2-2) to each transmit a signal including a control frame and a data frame; wherein each of the relay stations (2-1, 2-2) comprises a radio signal transmitter, an aircraft as a terminal to receive the signals from the relay stations; the radio signal transmitters are configured to transmit, to the same terminal , the control frame in a timeslot that is shared for the relay stations (2-1, 2-2) and to transmit, to the terminal the data frame in a timeslot that is not shared for the relay stations (2-1, 2-2); the terminal comprises an array antenna including an aperture; and an antenna pattern calculation unit configured to calculate antenna patterns of the array antenna , the antenna patterns including dividing the aperture to correspondingly orient each of the aperture divisions toward the relay stations (2-1, 2-2) when the control frames are received, and orienting the aperture toward one of the relay stations (2-1, 2-2) when the data frame is received, and in that the satellite communication system further comprises a control station to control connection between the terminal and each of the relay stations (2-1, 2-2), wherein the control station comprises a forward link data amount acquisition unit to obtain a forward link data amount for the terminal that is connected with the relay stations (2-1, 2-2) and a relay station count determination unit to determine, by using the data amount, a number of one or more relay stations (2-1, 2-2) to be connected to the terminal . a satellite as a relay station (2-1) and another satellite as an another relay station (2-2) to each transmit a signal including a control frame and a data frame; wherein each of the relay stations (2-1, 2-2) comprises a radio signal transmitter, an aircraft as a terminal to receive the signals from the relay stations; the radio signal transmitters are configured to transmit, to the same terminal , the control frame in a timeslot that is shared for the relay stations (2-1, 2-2) and to transmit, to the terminal the data frame in a timeslot that is not shared for the relay stations (2-1, 2-2); the terminal comprises an array antenna including an aperture; and an antenna pattern calculation unit configured to calculate antenna patterns of the array antenna , the antenna patterns including dividing the aperture to correspondingly orient each of the aperture divisions toward the relay stations (2-1, 2-2) when the control frames are received, and orienting the aperture toward one of the relay stations (2-1, 2-2) when the data frame is received, and in that the satellite communication system further comprises a control station to control connection between the terminal and each of the relay stations (2-1, 2-2), wherein the control station comprises a forward link data amount acquisition unit to obtain a forward link data amount for the terminal that is connected with the relay stations (2-1, 2-2) and a relay station count determination unit to determine, by using the data amount, a number of one or more relay stations (2-1, 2-2) to be connected to the terminal . <EOS>