| 摘要 |
Provided is a network allocation vector (NAV) operation method by a station (STA) operating in a wireless LAN (WLAN) system. An STA receiving a particular frame, if the frame is a frame for a basic service set (BSS) to which the corresponding STA belongs, determines whether or not a received signal strength indicator (RSSI) is higher than the first clear channel assessment (CCA) level and, if the corresponding frame is not a frame for a BSS to which the STA belongs, determines if the RSSI is higher than the second CCA level which is higher than the first CCA level. If the RSSI is higher than the first CCA level or the second CCA level, the STA updates NAV. If the received frame is a request to send (RTS) frame or a clear to send (CTS) frame, the received frame comprises additional information used for determining whether or not the RTS frame or the CTS frame is a frame for a BSS to which the STA belongs. |
