A wireless communication method, wherein the method is performed by a terminal, and comprises: receiving (S1) a system message on a downlink carrier, wherein the system message comprises uplink carrier configuration information and preamble transmission configuration information, the uplink carrier configuration information indicates a plurality of uplink carriers, and the preamble transmission configuration information indicates a transmission configuration of a radio access preamble; wherein the system message further comprises a threshold, and the method further comprises: selecting, based on the threshold, an uplink carrier from the plurality of the uplink carriers; sending (S2), based on the transmission configuration of the radio access preamble, the radio access preamble on the uplink carrier of the plurality of the uplink carriers; and descrambling(S3), based on identification information of a to be indicated uplink carrier among the plurality of uplink carriers, control information of a radio access response message on the downlink carrier; wherein the control information of the radio access response message is scrambled by a scrambling sequence and the scrambling sequence is calculated based on the identification information of the to be indicated uplink carrier. receiving (S1) a system message on a downlink carrier, wherein the system message comprises uplink carrier configuration information and preamble transmission configuration information, the uplink carrier configuration information indicates a plurality of uplink carriers, and the preamble transmission configuration information indicates a transmission configuration of a radio access preamble; wherein the system message further comprises a threshold, and the method further comprises: selecting, based on the threshold, an uplink carrier from the plurality of the uplink carriers; sending (S2), based on the transmission configuration of the radio access preamble, the radio access preamble on the uplink carrier of the plurality of the uplink carriers; and descrambling(S3), based on identification information of a to be indicated uplink carrier among the plurality of uplink carriers, control information of a radio access response message on the downlink carrier; wherein the control information of the radio access response message is scrambled by a scrambling sequence and the scrambling sequence is calculated based on the identification information of the to be indicated uplink carrier. selecting, based on the threshold, an uplink carrier from the plurality of the uplink carriers; sending (S2), based on the transmission configuration of the radio access preamble, the radio access preamble on the uplink carrier of the plurality of the uplink carriers; and descrambling(S3), based on identification information of a to be indicated uplink carrier among the plurality of uplink carriers, control information of a radio access response message on the downlink carrier; wherein the control information of the radio access response message is scrambled by a scrambling sequence and the scrambling sequence is calculated based on the identification information of the to be indicated uplink carrier. <EOS>