A wireless communication system in which a wireless station including a plurality of standard controls (100A, 100B) corresponding respectively to a plurality of wireless communication standards sharing a frequency resource is configured to perform a random access process corresponding to each of the wireless communication standards, obtain a transmission opportunity with the frequency resource used for each wireless communication standard, and transmit a wireless frame, wherein: the wireless station includes a simultaneous transmissions management part configured to: set a random access period for the random access process corresponding to each of the plurality of wireless communication standards, for each of the plurality of standard controls (100A, 100B) such that the random access periods for each of the wireless communication standards are consistent with one another, control frequencies and transmission start timings based on the plurality of wireless communication standards, and simultaneously transmit wireless frames of each of the wireless communication standards which obtained the transmission opportunities using Frequency Division Multiple Access, FDMA; and the plurality of standard controls (100A, 100B) are configured to simultaneously transmit the wireless frames of the plurality of wireless communication standards using FDMA, with the frequency resource which obtained the transmission opportunities by performing the random access process corresponding to each of the plurality of wireless communication standards under the control of the simultaneous the wireless station includes a simultaneous transmissions management part configured to: set a random access period for the random access process corresponding to each of the plurality of wireless communication standards, for each of the plurality of standard controls (100A, 100B) such that the random access periods for each of the wireless communication standards are consistent with one another, control frequencies and transmission start timings based on the plurality of wireless communication standards, and simultaneously transmit wireless frames of each of the wireless communication standards which obtained the transmission opportunities using Frequency Division Multiple Access, FDMA; and set a random access period for the random access process corresponding to each of the plurality of wireless communication standards, for each of the plurality of standard controls (100A, 100B) such that the random access periods for each of the wireless communication standards are consistent with one another, control frequencies and transmission start timings based on the plurality of wireless communication standards, and simultaneously transmit wireless frames of each of the wireless communication standards which obtained the transmission opportunities using Frequency Division Multiple Access, FDMA; and the plurality of standard controls (100A, 100B) are configured to simultaneously transmit the wireless frames of the plurality of wireless communication standards using FDMA, with the frequency resource which obtained the transmission opportunities by performing the random access process corresponding to each of the plurality of wireless communication standards under the control of the simultaneous