Abstract: A method and a device for listen-interval-based transmission or reception for a multi-link device (MLD) in a wireless LAN system are disclosed. The method performed by a station (STA) in a wireless LAN system, according to one embodiment of the present disclosure, may comprise the steps of: detecting, by the STA belonging to a non-access point (non-AP) MLD, a change in the state of one or more links from among a plurality of links; determining an updated MLD listen interval on the basis of one or more enabled links; and performing transmission or reception with an AP MLD on the basis of the updated MLD listen interval.

Abstract: Disclosed are an operating method and a device in a wireless LAN system. A method performed by a first STA in a wireless LAN system according to an embodiment of the disclosure may include the steps of: receiving a first aggregated medium access control protocol data unit (A-MPDU) including at least one address field and a quality of service (QOS) data frame from an access point (AP); transmitting a second A-MPDU including the QOS data frame to a second STA; and transmitting first block ACK (BA) frame including BA information received from the second STA to the AP, wherein the at least one address field includes an address 3 field configured as an MAC address of the second STA and an address 4 field configured as an MAC address of the AP.

Abstract: Proposed are a method and device for transmitting an ML element for ML reconfiguration in a wireless LAN system. Particularly, a reception MLD generates a first ML element for ML reconfiguration. The reception MLD transmits the first ML element to a transmission MLD via a first link. The first ML element comprises a profile subelement of a second reception STA. The profile subelement of the second reception STA comprises a first STA control field. The first STA control field comprises an STA MAC address present subfield. If the value of the STA MAC address present subfield is 1, then the profile subelement of the second reception STA further comprises an STA MAC address subfield.

Abstract: Disclosed are a method and apparatus for scheduling on the basis of multiple access point (AP) operations in a wireless LAN system. A method, performed by a first type station (STA) in a wireless LAN system according to one embodiment of the present disclosure, may comprise the following steps of: receiving, from a second type STA, information relating to one or more service periods (SPs) for the first type STA among a plurality of first type STAs; and performing, on the basis of the information relating to one or more SPs, a frame exchange with one or more third type STAs associated with the first type STA. The one or more SPs may comprise SPs that are restricted from transmitting STAs other than the first type STA and the one or more third type STAs.

Abstract: A method and a device for operating in a wireless LAN system are disclosed. The method performed by a first STA in a wireless LAN system according to one embodiment of the present disclosure comprises the operations of: transmitting, to an access point (AP), a first frame including a first field for requesting peer-to-peer (P2P) data communication within a restricted-target wake time (r-TWT); receiving, from the AP, a second frame including first information related to a time for P2P data communication; and performing the P2P data communication with a second STA for a time allocated by means of the first information, wherein the time allocated by means of the first information may be within an r-TWT service period (SP).

Abstract: Proposed are a method and apparatus for transmitting an ML element for ML reconfiguration in a wireless LAN system. In particular, a reception MLD generates a first ML element for ML reconfiguration. The reception MLD transmits the first ML element to a transmission MLD through a first link. The first ML element includes a profile sub-element of a second reception STA. The profile sub-element of the second reception STA includes a first STA control field. The first STA control field includes an entire profile sub-field. When a value of the entire profile sub-field is 1, the profile sub-element of the second reception STA includes entire information for the ML reconfiguration. When the value of entire profile sub-field is 0, the profile sub-element of the second reception STA does not include any information for the ML reconfiguration.

Abstract: Proposed are a method and apparatus for transmitting BSR information for another link on the basis of an A-control field in a wireless LAN system. In particular, a reception MLD generates an A-control field, and transmits the A-control field to a transmission MLD via a first link. The transmission MLD includes: a first transmission STA operating in the first link; a second transmission STA operating in a second link; and a third transmission STA operating in a third link. The reception MLD includes: a first reception STA operating in the first link; a second reception STA operating in the second link; and a third reception STA operating in the third link. The A-control field includes a control identifier, and control information for a BSR.

Abstract: The present specification proposes a method for a restricted TWT operation which has been improved and an apparatus for using the method. Particularly, according to an embodiment of the present specification, only when a specific condition is satisfied, a restricted TWT operation may be performed. Also, according to an embodiment of the present specification, an STA may determine whether or not to maintain a TXOP in progress prior to the start of a restricted TWT SP. In addition, according to an embodiment of the present specification, when the TXOP in progress is maintained prior to the start of the restricted TWT SP, the restricted TWT SP may be delayed.

Abstract: Proposed are a method and an apparatus for changing a primary link belonging to an NSTR link pair through an ML element in a WLAN system Specifically, a receiving MLD receives an ML element from a transmitting MLD via a first link. The receiving MLD decodes the ML element. The first link is a primary link, and a second link is a non-primary link. The first and second links are link pairs operating as NSTRs. The ML element contains a common information field. The common information field includes first and second subfields. The first subfield includes information that the primary link is changed from the first link to the second link. The second subfield includes information on a time when the primary link is changed from the first link to the second link.

Abstract: In a wireless local area network (WLAN) system, an STA MLD may include a first STA and a second STA, wherein the first STA operates on a first link, and the second STA operates on a second link. The STA MLD may transmit an association request frame to an access point (AP) MLD. The association request frame may include capability information of a requesting STA, which requests to be associated with the AP MLD, among STAs included in the STA MLD and information related to a request link, to with which a request to be associated is transmitted by the requesting STAs. The STA MLD may receive an association response frame from the AP MLD. The association response frame may include capability information of an AP that operates in a link, an association with which is accepted by the AP MLD, among the request links.

Abstract: A method and a device for signaling an ERSP in a wireless LAN system are presented. Specifically, a first reception STA receives a beacon frame from a transmission STA. The first reception STA receives a first frame from the transmission STA during an RSP. The beacon frame includes allocation information about the RSP. The first frame includes signaling information about the ERSP having an extended RSP. The first frame is transmitted when the ERSP starts. The signaling information about the ERSP includes information about whether an ERSP is present, information about the time when the ERSP ends, and information about the duration of the ERSP.

Abstract: A method and apparatus for configuring a frame for performing a teardown of a MAPC agreement in a wireless LAN system are proposed. Specifically, a first AP transmits a negotiation request frame to a second AP. The first AP performs the teardown of the MAPC agreement with the second AP based on the negotiation request frame. The negotiation request frame is a public action frame having a first value of a public action field. The negotiation request frame is used to teardown the MAPC agreement.

Abstract: Proposed are a method and device for transmitting an ML element for ML reconfiguration in a wireless LAN system. Particularly, a reception MLD generates a first ML element for ML reconfiguration. The reception MLD transmits the first ML element to a transmission MLD via a first link. The first ML element comprises a profile subelement of a second reception STA. The profile subelement of the second reception STA comprises a first STA control field. The first STA control field comprises an STA MAC address present subfield. If the value of the STA MAC address present subfield is 1, then the profile subelement of the second reception STA further comprises an STA MAC address subfield.

Abstract: The present disclosure relates to media access control (MAC) address handling for roaming in a wireless LAN system. According to an embodiment of the present disclosure, a method performed by a station (STA) in a wireless LAN system comprises the steps of: performing an association procedure with a first access point (AP); obtaining a media access control (MAC) address for a roaming group including the first AP; transmitting a roaming request frame including the MAC address for the roaming group to the first AP; and performing roaming to a second A P included in the roaming group on the basis of receiving a roaming response frame for the roaming request frame, wherein the MAC address for the roaming group is common to a plurality of APs included in the roaming group.

Abstract: Proposed are a method and device for receiving, on the basis of a state code in a wireless LAN system, whether or not a multi-link has been established. Particularly, a reception MLD transmits a first association request frame to a transmission MLD via a first link. The reception MLD receives a first association response frame from the transmission MLD via the first link. The first association response frame includes a first ML element. The first ML element includes a profile field of a second transmission STA. The profile field of the second transmission STA includes a state code. The state code includes information indicating that the establishment of the ML has failed because a second link is allowed but the first link is not allowed.

Abstract: The present specification proposes various methods for transmitting restricted TWT scheduling information. According to an embodiment of the present invention, the restricted TWT scheduling information can be transmitted through a beacon frame and another beacon frame other than the beacon frame. According to another embodiment described in the present specification, the restricted TWT scheduling information can be transmitted through a beacon frame and response information to request information transmitted by an STA that has not received the beacon frame.

Abstract: In a wireless local area network (WLAN) system, an STA MLD may include a first STA and a second STA, wherein the first STA operates on a first link, and the second STA operates on a second link. The STA MLD may transmit an association request frame to an access point (AP) MLD. The association request frame may include capability information of a requesting STA, which requests to be associated with the AP MLD, among STAs included in the STA MLD and information related to a request link, to with which a request to be associated is transmitted by the requesting STAs. The STA MLD may receive an association response frame from the AP MLD. The association response frame may include capability information of an AP that operates in a link, an association with which is accepted by the AP MLD, among the request links.

Abstract: A method and apparatus for multi-link device (MLD)-based roaming in a wireless LAN system are disclosed. The method performed by a first STA in a wireless LAN system comprises the steps of: receiving, from a first access point (AP) belonging to a first group, announcement information including first information related to whether or not an addition of at least one link is supported for the first STA; transmitting, to the first AP, a request frame including a link ID of a second AP belonging to a second group; and receiving, from the first AP, a response frame including the link ID of the second AP, wherein the request frame may include second information requesting an addition or deletion of a link between the first STA and the second AP.

Abstract: Disclosed are a method and device for transmission or reception in an enhanced triggered transmission opportunity sharing procedure in a wireless LAN system. The method performed by a station (STA) in a wireless LAN system according to an embodiment disclosed herein comprises the steps of: receiving, from an access point (AP), a trigger frame related to the sharing of a transmission opportunity (TXOP); and transmitting, to the AP, a response frame to the trigger frame. The trigger frame includes a common information field and a plurality of user information fields for a plurality of STAs including the STA, and the starting point of a time period allocated to the STA in the TXOP can be identified on the basis of the order of the user information field for the STA among the plurality of user information fields.

Abstract: Disclosed are a method and device operating in a wireless LAN system. The method performed by a first STA in a wireless LAN system according to an embodiment disclosed herein may comprise the steps of: receiving, from a second STA, an aggregated medium access control protocol data unit (A-MPDU) including a first trigger frame and a second trigger frame; and performing uplink transmission on the basis of the first trigger frame and the second trigger frame, wherein the first trigger frame includes first information indicating at least one resource unit (RU) within a primary channel bandwidth, and the second trigger frame includes second information indicating at least one resource unit (RU) within a secondary channel bandwidth.