Patent ID: 8670382

Claim:
A control apparatus comprising: a detecting unit that, when receiving data transmitted from a mobile terminal device via at least one wireless communication apparatus including a buffer that stores the data up to at least one of a predetermined capacity and a predetermined time, detects drop of the data on the basis of sequence numbers included in the data and associated with predetermined data; and a data obtaining unit that, when drop of data is detected by the detecting unit, selects at least one sequence number corresponding to the dropped data, wherein, in the case where the data are transmitted from the mobile terminal device via a single wireless communication apparatus of the at least one wireless communication apparatus, the at least one sequence number is a frame sequence number set by the single wireless communication apparatus for a frame comprising multiple packets transmitted from the mobile terminal device and, in the case where the data are transmitted from the mobile terminal device via a plurality of wireless communication apparatuses of the at least one wireless communication apparatus, the at least one sequence number is a sequence number set by the mobile terminal device for each packet transmitted from the mobile terminal device, and transmits the at least one sequence number corresponding to the dropped data to the at least one wireless communication apparatus and obtains the dropped data from the buffer of only one of the at least one wireless communication apparatus.