A method for reallocating resources in a satellite radio communication system, said system comprising one or more user terminals, a hub site comprising a hub with a hub manager, an access hub, a source modem and a receiver modem, and an SBC controller, said method comprising at least the following steps: • further to a first content request, a first user terminal U 1 is initially in relation with a first source modem of the hub at which he is connected, so as to allow an exchange of a first data traffic for the first user terminal U1, • upon receipt of a new communication request Rq 2 sent by at least a second user terminal U2, when the request Rq 2 takes priority over the requests currently being processed, then executing at least the following steps: • the hub manager notifies the receiver modem that said receiver modem will handle the traffic of a second data flow F 2 for a new request sent by the second user terminal U 2,, • the hub manager tells the source modem, responsible up until this point for handling the traffic for the first terminal U 1, to suspend its traffic, • the hub manager notifies the access hub to then redirect the flows destined for the user terminal U1 to the receiver modem, • the hub manager informs the user terminal U 1 of its change of allocation via the channels of the source modem, for the first data flow F 1, • the user terminal U 1 sends an acknowledgement of receipt of the channel reallocation, • upon receipt of this acknowledgment of receipt, the hub manager frees up the resources assigned to the user terminal U 1 by the source modem, and tells the receiver modem that it is possible to transmit the first flow F 1 and the second flow F 2, • the hub manager then confirms to the SBC controller that the demand for resources for a new flow destined for the user terminal U 2 is accepted. • further to a first content request, a first user terminal U 1 is initially in relation with a first source modem of the hub at which he is connected, so as to allow an exchange of a first data traffic for the first user terminal U1, • upon receipt of a new communication request Rq 2 sent by at least a second user terminal U2, when the request Rq 2 takes priority over the requests currently being processed, then executing at least the following steps: • the hub manager notifies the receiver modem that said receiver modem will handle the traffic of a second data flow F 2 for a new request sent by the second user terminal U 2,, • the hub manager tells the source modem, responsible up until this point for handling the traffic for the first terminal U 1, to suspend its traffic, • the hub manager notifies the access hub to then redirect the flows destined for the user terminal U1 to the receiver modem, • the hub manager informs the user terminal U 1 of its change of allocation via the channels of the source modem, for the first data flow F 1, • the user terminal U 1 sends an acknowledgement of receipt of the channel reallocation, • upon receipt of this acknowledgment of receipt, the hub manager frees up the resources assigned to the user terminal U 1 by the source modem, and tells the receiver modem that it is possible to transmit the first flow F 1 and the second flow F 2, • the hub manager then confirms to the SBC controller that the demand for resources for a new flow destined for the user terminal U 2 is accepted. • the hub manager notifies the receiver modem that said receiver modem will handle the traffic of a second data flow F 2 for a new request sent by the second user terminal U 2,, • the hub manager tells the source modem, responsible up until this point for handling the traffic for the first terminal U 1, to suspend its traffic, • the hub manager notifies the access hub to then redirect the flows destined for the user terminal U1 to the receiver modem, • the hub manager informs the user terminal U 1 of its change of allocation via the channels of the source modem, for the first data flow F 1, • the user terminal U 1 sends an acknowledgement of receipt of the channel reallocation, • upon receipt of this acknowledgment of receipt, the hub manager frees up the resources assigned to the user terminal U 1 by the source modem, and tells the receiver modem that it is possible to transmit the first flow F 1 and the second flow F 2, • the hub manager then confirms to the SBC controller that the demand for resources for a new flow destined for the user terminal U 2 is accepted.