1. A wireless communication method of a terminal, the method comprising:
receiving a wireless signal of a specific channel;
extracting basic service set (BSS) identifier information of the received wireless signal;
extracting length information from the wireless signal wherein the length information represents information relating to a
transmission completion time point of the wireless signal; and
adjusting a data transmission period of the terminal based on the extracted length information, when the BSS identifier information
of the wireless signal is different from BSS identifier information of the terminal.