Radio communication method and a base station and user terminal thereof

A communication method for user terminal in a radio communication system, in which each of user terminals performs multiplexing of a data signal and a

• pilot signal and transmits the multiplexed signal to a base station using different data transmission band frequencies that are different data transmission band frequencies
• that are assigned by the base station, the communication method comprising:
• receiving uplink resource information from a base station;
• and
• generating a Zadoff-Chu sequence, to which a cyclic shift is applied, as a pilot signal based on the uplink resource information;
• performing subcarrier mapping by copying a part of the Zadoff-Chu sequence and adding the copy to the Zadoff-Chu sequence in a frequency domain;
• and
• transmitting the mapped pilot signal to the base station.

A radio communication system, in which each of user terminals performs multiplexing of a data signal and a pilot signal and transmits the multiplexed signal to a base station using different data transmission band frequencies that are assigned by the base station, the radio communication system comprising:

• the base station and the user terminals, wherein
• the base station includes,
• a first transmitting unit that transmits an uplink resource information to each of the user terminals;
• and wherein
• the each of the user terminals includes,
• a receiving unit that receives the uplink resource information from a base station;
• and
• a pilot generation unit that generates a Zadoff-Chu sequence, to which a cyclic shift is applied, as a pilot signal based on the uplink resource information;
• and
• a second transmitting unit that transmits the pilot signal generated by the pilot generation unit to the base station;
• wherein
• the pilot generation unit comprises:
• a subcarrier mapping unit that performs subcarrier mapping by copying a part of the Zadoff-Chu sequence and adding the copy to the Zadoff-Chu sequence in a frequency domain.