Patent ID: 8514755

Claim:
A receiving apparatus to receive data by radio communication from a transmitting apparatus that transmits the data, the receiving apparatus comprising: a processor; a receiver operatively coupled to the processor; a transmitter operatively coupled to the processor; and a memory device storing instructions which when executed by the processor, cause the processor, in cooperation with the receiver and the transmitter, to: receive data transmitted from the transmitting apparatus by the radio communication; determine a radio communication state based on whether the data received by the receiver corresponds to one of a plurality of communication states; detect radio communication information about the radio communication state based on the data; determine the radio communication state based on a value for the detected radio communication state at a specified time and an average of values for the radio communication information detected within a specified time period including said specified time; calculate a time difference of a control message transmission time and a data reception time; and transmit (i) state information indicating the determined radio communication state and (ii) the calculated time difference of the control message transmission time and the data reception time to the transmitting apparatus.