Patent ID: 8874028

Claim:
A communication method using a communication system that includes a base station, a relay device, and a terminal device, the method comprising: the relay device, receiving first data from the base station, the first data including first control information that represents a first communication mode which is a mode of communication from the base station to the relay device, adding second control information to the received first data, the second control information representing a second communication mode which is a mode of communication from the relay device to the terminal device, and relaying second data to the terminal device, the second data including the first data added with the second control information; and the terminal device, receiving the first data of the first communication mode sent from the base station to the relay device, storing the first data in a buffer, performing reception processing on the second data based on the second control information included in the second data, performing reception processing on the first data based on the first control information included in the second data, and combining the first and second data on which the reception processings have been performed, wherein the terminal device measures a signal transmitted from the base station to determine whether a reception level of the measured signal is substantially equal to or greater than a predetermined threshold, and notifies the relay device of execution information indicating that reception processing is performed on the first data when it is determined that the reception level is substantially equal to or greater than the predetermined threshold; and the relay device relays the second data that includes the second control information upon notification of the execution information from the terminal device.