1. A method of transmitting data, performed by a first transceiver, the method comprising: transmitting data segments of source data and parity data segments comprising restoration information for restoring the source data, to a second transceiver; receiving from the second transceiver a control signal representing whether the source data is obtained by the second transceiver, based on at least one data segment among the source data segments and the parity data segments; determining that additional data segments for the second transceiver to obtain the source data are to be transmitted, based on the control signal; and transmitting the additional data segments to the second transceiver.