A wireless communication system comprising: a mobile station; and a wireless base station, wherein the wireless base station comprises: a scheduling processing unit configured to divide system bandwidth into a plurality of wireless resource blocks in a frequency domain, the plurality of wireless resource blocks including first wireless resource blocks for transmitting a first signal using a first channel, assign a second channel, for transmitting data, to second wireless resource blocks, other than third wireless resource blocks adjacent to the first wireless resource blocks, based on whether a frequency characteristic of the first channel is not orthogonal to a frequency characteristic of the second channel and when the ratio of the third wireless resource blocks among the second and third wireless resource blocks is equal to or more than a threshold value, wherein the second channel is a channel of a narrow bandwidth, and generate scheduling information indicating the assignment result; and a transmission unit configured to transmit the scheduling information, generated by the scheduling processing unit, to the mobile station, wherein the mobile station is configured to transmit the data to the wireless base station on the basis of the scheduling information, and the wireless base station is configured to receive the data transmitted from the mobile station. a mobile station; and a wireless base station, wherein the wireless base station comprises: a scheduling processing unit configured to divide system bandwidth into a plurality of wireless resource blocks in a frequency domain, the plurality of wireless resource blocks including first wireless resource blocks for transmitting a first signal using a first channel, assign a second channel, for transmitting data, to second wireless resource blocks, other than third wireless resource blocks adjacent to the first wireless resource blocks, based on whether a frequency characteristic of the first channel is not orthogonal to a frequency characteristic of the second channel and when the ratio of the third wireless resource blocks among the second and third wireless resource blocks is equal to or more than a threshold value, wherein the second channel is a channel of a narrow bandwidth, and generate scheduling information indicating the assignment result; and a transmission unit configured to transmit the scheduling information, generated by the scheduling processing unit, to the mobile station, wherein a scheduling processing unit configured to divide system bandwidth into a plurality of wireless resource blocks in a frequency domain, the plurality of wireless resource blocks including first wireless resource blocks for transmitting a first signal using a first channel, assign a second channel, for transmitting data, to second wireless resource blocks, other than third wireless resource blocks adjacent to the first wireless resource blocks, based on whether a frequency characteristic of the first channel is not orthogonal to a frequency characteristic of the second channel and when the ratio of the third wireless resource blocks among the second and third wireless resource blocks is equal to or more than a threshold value, wherein the second channel is a channel of a narrow bandwidth, and generate scheduling information indicating the assignment result; and divide system bandwidth into a plurality of wireless resource blocks in a frequency domain, the plurality of wireless resource blocks including first wireless resource blocks for transmitting a first signal using a first channel, assign a second channel, for transmitting data, to second wireless resource blocks, other than third wireless resource blocks adjacent to the first wireless resource blocks, based on whether a frequency characteristic of the first channel is not orthogonal to a frequency characteristic of the second channel and when the ratio of the third wireless resource blocks among the second and third wireless resource blocks is equal to or more than a threshold value, wherein the second channel is a channel of a narrow bandwidth, and generate scheduling information indicating the assignment result; and a transmission unit configured to transmit the scheduling information, generated by the scheduling processing unit, to the mobile station, wherein the mobile station is configured to transmit the data to the wireless base station on the basis of the scheduling information, and the wireless base station is configured to receive the data transmitted from the mobile station.