Wireless relay method, base station, and wireless communication system

The objective of the present invention is to reduce the frequency resources required for communication by an RS and eNB. Provided is a wireless relay method for relaying wireless signals sent between a mobile station and a base station. Relaying is performed so that a frequency to be used upon relaying at least one transmission signal among transmission signals transmitted from a plurality of mobile stations, is allocated to at least partly overlap a frequency allocated to other transmission signals which are not relayed. The frequencies to be used for transmitting the transmission signals to be relayed can be discretely arranged on a frequency axis.