A mobile terminal includes; a first wireless interface configured to perform communication through a public mobile communication network; a second wireless interface configured to perform direct communication with another mobile terminal; an update information transmitter unit configured to transmit update information including identification information and communication state information of the mobile terminal, to a control device in the public mobile communication network through the first wireless interface at a predetermined timing; a route maintaining unit configured to receive a packet transfer route generated by the control device of the public mobile communication network based on the update information through the first wireless interface, and to maintain the packet transfer route; and a packet transmitter unit configured to transmit a packet to another mobile terminal through the second wireless interface based on the packet transfer route.