The present invention relates to a communication method in a heterogeneous network environment using the same frequency band. The method includes: transmitting by a transmitting station a message for using an arbitrary channel in the frequency band to a base station or a heterogeneous terminal using a heterogeneous communication technique; and performing by the transmitting station a data communication with a receiving station through the arbitrary channel. The message includes a time in which the transmitting station uses the arbitrary channel for the data communication. The message is a message with which the heterogeneous base station or the heterogeneous terminal, which receives the message, stops the data communication using the arbitrary channel for the time. Additionally, in this specification, a mobile communication terminal in a heterogeneous network environment using the same frequency band includes: a wireless communication unit for transmitting/receiving a wireless signal to/from outside; and a processor for controlling the wireless communication unit to transmit a message for using an arbitrary channel in the frequency band to a base station or a heterogeneous terminal, which uses a heterogeneous communication technique. The message includes a time that the terminal uses the arbitrary channel for the data communication. The message is a message with which the heterogeneous base station or the heterogeneous terminal, which receives the message, stops the data communication using the arbitrary channel for the time.