In a mobile communication system including a plurality of communication terminals each equipped with a wireless communication device for performing wireless communication between the local station and the secondary station and a base station apparatus wirelessly connected to the plurality of communication terminals, the communication terminal comprises identification information regarding the local station and the secondary station, with which wireless communication can be performed, to the base station apparatus, while the base station apparatus comprises a receiving device for receiving the identification information, a interlinking device for interlinking communication packets for the plurality of communication terminals in accordance with a communication method adapted to the communication terminal and the received identification information, a selecting device for selecting the communication terminal corresponding to a transmission destination of the interlinked communication packets based on information representing communication conditions of the plurality of communication terminals, and a transmitting device for transmitting the interlinked packets to the selected communication terminal, wherein the communication terminal is constituted such that the interlinked packets are received, then, at least packets for the secondary station within the received interlinked packets are transferred to the secondary station by the wireless communication device. Thus, it is possible to apparently improve the throughput by effectively using time slots.