Wireless communication method and wireless communication terminal using multi-basic service identifier set

1. A wireless communication terminal that communicates wirelessly, the terminal comprising:

a transceiver; and

a processor,

wherein a basic service set (BSS) of the wireless communication terminal corresponds to a multiple BSS identifier (BSSID) set,

wherein the multiple BSSID set is a set of a BSSID of each of a plurality of BSSs classified into one group,

wherein the processor is configured to:

receive a frame through the transceiver,

determine the frame as an Intra-BSS frame when a transmitter address (TA) or a receiver address (RA) signaled in a medium access control (MAC) header of the frame matches any one of a plurality of BSSIDs included in the multiple BSSID set, and

enter a power save state when the frame is an Intra-BSS frame and a receiver address (RA) of the frame does not indicate the wireless communication terminal,

wherein values of BSS colors corresponding to the plurality of BSSs are the same as each other, and

wherein the BSS color is information identifying a BSS signaled in a physical layer signaling field of a PLCP Protocol Data Unit (PPDU) including the frame.

2. The wireless communication terminal of claim 1 , wherein the processor is configured to maintain the power save state during the PPDU including the frame.

3. The wireless communication terminal of claim 1 , wherein the processor is configured to separately set a Network Allocation Vector (NAV) for an Intra-BSS frame and a NAV for an Inter-BSS frame and access a channel based on the NAV for the Intra-BSS frame and the NAV for the Inter-BSS frame.

4. The wireless communication terminal of claim 3 , wherein when the MAC address signaled in the MAC header of the frame matches any one of the plurality of BSSIDs included in the multiple BSSID set, the processor is configured to set the NAV for the Intra-BSS frame based on the frame.

5. An operating method of a wireless communication terminal that communicates wirelessly, the method comprising:

receiving a frame;

determining the frame as an Intra-BSS frame when a transmitter address (TA) or a receiver address (RA) signaled in a medium access control (MAC) header of the frame matches any one of a plurality of BSSIDs included in a multiple basic service set identifier (BSSID) set to which a BSS of the wireless communication terminal corresponds, wherein the multiple BSSID set is a set of a BSSID of each of a plurality of BSSs classified into one group; and

entering a power save state when the frame is an Intra-BSS frame and a receiver address (RA) of the frame does not indicate the wireless communication terminal,

wherein values of BSS colors corresponding to the plurality of BSSs are the same as each other, and

wherein the BSS color is information identifying a BSS signaled in a physical layer signaling field of a PLCP Protocol Data Unit (PPDU) including the frame.

6. The method of claim 5 , the method further comprises maintaining the power save state during a duration of the PPDU including the frame.

7. The method of claim 5 , wherein the method further comprises separately setting a Network Allocation Vector (NAV) for an Intra-BSS frame and a NAV for an Inter-BSS frame and accessing a channel based on the NAV for the Intra-BS S frame and the NAV for the Inter-BSS frame.

8. The wireless communication terminal of claim 7 , wherein the separately setting the NAV for an Intra-BSS frame and the NAV for an Inter-BSS frame comprises

wherein when the MAC address signaled in the MAC header of the frame matches any one of the plurality of BSSIDs included in the multiple BSSID set, setting the NAV for the Intra-BSS frame based on the frame.