Patent ID: 8526353

Claim:
A communication control device that controls a communication path to a radio communication device by use of a first radio IP network in which a first care of IP address is dynamically assigned to the radio communication device in accordance with a position of the radio communication device, and of a second radio IP network in which a second care of IP address is assigned to the radio communication device, the communication control device comprising: a processor configured to receive an IP packet transmitted from the radio communication device to a communication destination via the first radio IP network in a predetermined cycle, and to relay the IP packet to the communication destination; to determine whether or not a bandwidth of the first radio IP network used for receiving the IP packet from the radio communication device is of a size capable of transferring the IP packet within a predetermined time period, based on a number of already received IP packets that have been received from the radio communication device within a former half time frame; to transmit first uplink transmission control information to the radio communication device in a case where it is determined that the bandwidth is not of a size capable of transferring the IP packet within the predetermined time period, the first uplink transmission control information indicating an instruction to transmit, to the first radio IP network, IP packets as many as a number transmittable by use of the bandwidth within a latter half time frame subsequent to the former half time frame; and to transmit second uplink transmission control information to the radio communication device, the second uplink transmission control information indicating an instruction to transmit, to the second radio IP network, a remaining number of IP packets excluding the number of IP packets transmittable within the latter half time frame.