A wireless communication system, a communication device, wireless communication method, and a wireless communication program

A random access signal transmitted by allocating in a defined band, a receiving apparatus for receiving from a transmitting apparatus, a bandwidth allocation pattern is a combination of the band, a plurality of size bands combined the different each other a bandwidth allocation pattern candidate storing unit for previously storing the bandwidth allocation pattern, based on the value representing the receiving frequency of the random access signal, from the bandwidth allocation pattern in which the bandwidth allocation pattern candidate storing unit stores, bandwidth allocation comprising a bandwidth allocation pattern determining unit that determines a pattern, and a bandwidth allocation pattern notifying unit for notifying the information of the bandwidth allocation pattern the band allocation pattern determination unit has determined.