A wireless communication system comprises a mobile communication apparatus, and a terminal device. The mobile communication apparatus comprises a first wireless unit that wirelessly communicates control information to and from the terminal device in a first communication method, and a second wireless unit that wirelessly communicates user information to and from the terminal device in a second communication method that uses a higher frequency band than the first communication method. The terminal device comprises a third wireless unit that performs wireless communication to and from the first wireless unit, and a fourth wireless unit that performs wireless communication to and from the second wireless unit. The mobile communication apparatus or the terminal device determines a timing of wireless communication to be performed between the second wireless unit and the fourth wireless unit by performing wireless communication between the first wireless unit and the third wireless unit.