Method for supporting multi-BSS in wireless LAN system and device therefor

An access point (AP) relating to multiple basic service sets (BSSs) in a wireless local area network (LAN) system, the AP comprising:

• a transceiver;
• and
• a processor coupled with the transceiver and configured to:
• based on a plurality of BSS identifiers related to the AP, control the transceiver to
• transmit a frame notifying a station (STA) information on the plurality of BSS identifiers related to the AP,
• wherein the information on the plurality of BSS identifiers includes information on a BSS color being identical for the plurality of BSS identifiers, and
• control the transceiver to transmit a physical layer protocol data unit (PPDU) comprising the information on the BSS color to the STA associated with one of the plurality BSS identifiers as intra-BSS PPDU.

A method of receiving, by a station (STA), a signal from an access point (AP) related to supporting multiple basic service sets (BSSs) in a wireless local area network (LAN) system, the method comprising:

• receiving, from the AP related to a plurality of BSS identifiers, a frame notifying information on the plurality of BSS identifiers related to the AP,
• wherein the information on the plurality of BSS identifiers includes information on a BSS color being identical for the plurality of BSS identifiers;
• receiving a physical layer protocol data unit (PPDU) comprising the information on the BSS color;
• and
• entering a doze state until an end of the PPDU based on a determination that the PPDU is an intra-BSS PPDU based on the BSS color and that the PPDU does not include a STA identifier of the STA.

A station (STA) for receiving a signal from an access point (AP) related to supporting multiple basic service sets (BSSs) in a wireless local area network (LAN) system, the STA comprising:

• a transceiver;
• and
• a processor coupled with the transceiver and configured to:
• control the transceiver to receive, from the AP related to a plurality of BSS identifiers, a frame notifying information on the plurality of BSS identifiers related to the AP,
• wherein the information on the plurality of BSS identifiers includes information on a BSS color being identical for the plurality of BSS identifiers;
• control the transceiver to receive a physical layer protocol data unit (PPDU) comprising the information on the BSS color;
• and
• entering a doze state until an end of the PPDU based on a determination that the PPDU is an intra-BSS PPDU based on the BSS color and that the PPDU does not include a STA identifier of the STA.