A terminal, comprising: control circuitry configured to select one of a first method and a second method based on a channel quality, wherein the channel quality is received quality of a downlink signal, the first method being for transmitting a random access signal including a preamble part and a data part, the second method being for transmitting the random access signal including the preamble part but not including the data part; and transmission circuitry configured to transmit the random access signal based on the selected method, characterised in that: wherein in the first method, the transmission circuitry is configured to transmit the random access signal using a resource associated with a signal of the plurality of downlink signals for which the received quality is equal to or greater than a first threshold, wherein in the second method, the transmission circuitry is configured to transmit the random access signal using a resource associated with a signal of the plurality of downlink signals for which the received quality is equal to or greater than a second threshold, and wherein the first threshold is different from the second threshold, wherein the transmission circuitry is configured to retransmit the random access signal based on the first method when a response of the random access signal is not received within a specified period after the transmission of the random access signal based on the first method. control circuitry configured to select one of a first method and a second method based on a channel quality, wherein the channel quality is received quality of a downlink signal, the first method being for transmitting a random access signal including a preamble part and a data part, the second method being for transmitting the random access signal including the preamble part but not including the data part; and transmission circuitry configured to transmit the random access signal based on the selected method, characterised in that: wherein in the first method, the transmission circuitry is configured to transmit the random access signal using a resource associated with a signal of the plurality of downlink signals for which the received quality is equal to or greater than a first threshold, wherein in the second method, the transmission circuitry is configured to transmit the random access signal using a resource associated with a signal of the plurality of downlink signals for which the received quality is equal to or greater than a second threshold, and wherein the first threshold is different from the second threshold, wherein the transmission circuitry is configured to retransmit the random access signal based on the first method when a response of the random access signal is not received within a specified period after the transmission of the random access signal based on the first method. wherein in the first method, the transmission circuitry is configured to transmit the random access signal using a resource associated with a signal of the plurality of downlink signals for which the received quality is equal to or greater than a first threshold, wherein in the second method, the transmission circuitry is configured to transmit the random access signal using a resource associated with a signal of the plurality of downlink signals for which the received quality is equal to or greater than a second threshold, and wherein the first threshold is different from the second threshold, wherein the transmission circuitry is configured to retransmit the random access signal based on the first method when a response of the random access signal is not received within a specified period after the transmission of the random access signal based on the first method.