Abstract: Disclosed are a method and an apparatus for priority-based transmission related to a target wake time operation in a wireless LAN system. A method for performing frame exchange by a station (STA) in a wireless LAN system according to an embodiment of the present disclosure may comprise the steps of: receiving restricted target wake time (r-TWT)-related information from an access point (AP); receiving information, which is related to a modified end time point of an r-TWT service period (SP), from the AP after a start time point of the r-TWT SP on the basis of the r-TWT-related information; and performing the frame exchange on the basis of the modified end time point of the r-TWT SP.

Abstract: A method and a device for transmitting or receiving information related to an access point in a wireless LAN system are disclosed. A method for receiving information related to one or more access points (APs) by a station (STA) in a wireless LAN system according to an embodiment of the present disclosure may comprise the steps of: transmitting a request frame including information indicating one or more of a first AP and a first multi-link device (MLD); and receiving a response frame responding to the request frame from a second AP, wherein the response frame includes a first multi-link (ML) element related to one or more of the first AP and the first MLD, and a second ML element related to one or more of the second AP and a second MLD.

Abstract: Proposed are a method and an apparatus for receiving an MAC address of another STA within a reception MLD in a wireless LAN system. Specifically, the reception MLD receives an ML element from a transmission MLD through a first link. The reception MLD decodes the ML element. The ML element includes common information and link information. The link information includes a profile field of the second transmission STA. The profile field of the second transmission STA includes first information relating to whether an MAC address of the second transmission STA exists. If the first information is configured to be 1, the profile field of the second transmission ST A includes the MAC address of the second transmission STA.

Abstract: Presented are a method and a device for requesting and receiving information about other AP corresponding to a nontransmitted BSSID set in a wireless LAN system. Particularly, a reception MLD transmits a multi-link (ML) probe request frame from a transmission MLD through a first link. The reception MLD receives an ML probe response frame from the transmission MLD through the first link. The transmission MLD includes first and second transmission MLDs. The first transmission MLD includes a first transmission STA operating in the first link. The second transmission MLD includes a second transmission STA operating in the first link, and a third transmission STA operating in a second link. The second transmission STA is a transmission STA corresponding to a first nontransmitted BSSID of a set of multiple BSSIDs on the basis of the first transmission STA.

Abstract: Disclosed are a method and an apparatus for transmitting and receiving protocol data unit (PDU)-related information in a wireless LAN system. The method by which a first station (STA) transmits an aggregate-medium access control (MAC) protocol data unit (PDU) (A-MPDU) in a wireless LAN system, according to an embodiment of the present disclosure, may comprise the steps of: receiving, from a second STA, one or more of first information, second information, and third information related to the maximum length for the A-MPDU; and transmitting, to the second STA, an A-MPDU having a length less than or equal to the maximum length for the A-MPDU, which is derived from a first type physical layer PDU (PPDU) on the basis of the first information, the second information, and the third information.

Abstract: Disclosed are a priority-based transmission method and device associated with a target wake time operation in a wireless LAN system. The method for exchanging frames by a station (STA) in a wireless LAN system according to one embodiment of the present disclosure may comprise the steps of: receiving information relating to a restricted target wake time (r-TWT) from an access point (AP); and exchanging frames before the starting point of a service period (SP) of the r-TWT. The information relating to the r-TWT is included in a TWT element comprising a TWT parameter set field format. The TWT parameter set field format comprises a TWT information field. The TWT information field may comprise a TID subfield for traffic associated with the r-TWT.

Abstract: Proposed are a method and a device for receiving significant update information regarding a specific AP via a management frame in a WLAN system. Specifically, a reception MLD receives a management frame from a transmission MLD via a first link. The reception MLD decodes the management frame. The management frame includes a notification method mode field. If a significant update on a second transmission STA occurs, a value of the notification method mode field is set to 1, and the management frame includes significant update information of the second transmission STA.

Abstract: A method and a device for transmitting updated information for an ML reconfiguration in a wireless LAN system are proposed. Specifically, a reception MLD performs an ML reconfiguration with a transmission MLD. The reception MLD transmits MLD capability information for the ML reconfiguration to the transmission MLD. The transmission MLD comprises a first transmission STA operating in a first link and a second transmission STA operating in a second link. The reception MLD comprises a first reception STA operating in the first link and a second reception STA operating in the second link. The MLD capability information includes information on a change in the number of links supported by the transmission and reception MLDs at the same time.

Abstract: The specification proposes a method for requesting information on a restricted TWT when an STA has failed to receive the information. According to an embodiment of the present specification, when an STA fails to acquire information on a restricted TWT, the STA may transmit, to an AP, a signal for requesting the information on the restricted TWT after a certain time elapses from a TBTT. The signal may be transmitted independently or may be transmitted together with another signal transmitted by the STA.

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: A method and a device for transmitting updated information for an ML reconfiguration in a wireless LAN system are proposed. Specifically, a reception MLD performs an ML reconfiguration with a transmission MLD. The reception MLD transmits MLD capability information for the ML reconfiguration to the transmission MLD. The transmission MLD comprises a first transmission STA operating in a first link and a second transmission STA operating in a second link. The reception MLD comprises a first reception STA operating in the first link and a second reception STA operating in the second link. The MLD capability information includes information on a change in the number of links supported by the transmission and reception MLDs at the same time.

Abstract: Proposed are a method and a device for requesting the same partial information for all transmission STAs within a transmission MLD and responding thereto in a wireless LAN system. Specifically, a reception MLD transmits an ML probe request frame through a first link from the transmission MLD. The reception MLD receives an ML probe response frame through the first link from the transmission MLD. The ML probe request frame includes a first frame body and a probe request ML element. When the first reception ST A requests the same partial information for all transmission STAs, the first frame body includes a first request element and the probe request ML element does not include a profile sub-element of the second transmission STA.

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: Suggested are a method and an apparatus for signaling RSP on the basis of a TWT information frame in a wireless LAN system. Specifically, a first receiving STA receives a beacon frame from a transmitting STA. The first receiving STA transmits a first TWT information frame to the transmitting STA. The beacon frame includes allocation information for the RSP. The first TWT information frame includes a first All TWT field, a first TWT Flow identifier field, and a first Next TWT field. When the first All TWT field is set to 1, the first TWT Flow identifier field is set to 2, and the first Next TWT field is set to 0, the RSP is stopped.

Abstract: Proposed are a method and an apparatus for receiving an MAC address of another STA within a reception MLD in a wireless LAN system. Specifically, the reception MLD receives an ML element from a transmission MLD through a first link. The reception MLD decodes the ML element. The ML element includes common information and link information. The link information includes a profile field of the second transmission STA. The profile field of the second transmission STA includes first information relating to whether an MAC address of the second transmission STA exists. If the first information is configured to be 1, the profile field of the second transmission ST A includes the MAC address of the second transmission STA.

Abstract: Proposed are a method and a device for transmitting and receiving important update information of another AP through an ML element in a WLAN system. Specifically, a receiving MLD receives a basic ML element from a transmitting MLD over a first link. The receiving MLD decodes the basic ML element. The basic ML element includes a profile field of the second transmitting STA. The profile field of the second transmitting STA includes a first CSF presence field. When the value of the first CSF presence field is set to 0, the profile field of the second transmitting STA includes a first CSF field. The first CSF field includes information about the current change sequence number of the second transmitting STA.

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: Proposed are a method and device for switching between 320 MHz channels in a wireless LAN system. Specifically, a reception STA receives a beacon frame from a transmission STA through a first 320 MHz channel. The reception STA receives an EHT OM field from the transmission STA through the first 320 MHz channel. The reception STA receives a beacon frame from the transmission STA through a second 320 MHz channel. BSS channels of the transmission and reception STAs are switched from the first 320 MHz channel to the second 320 MHz channel on the basis of the beacon frame and the EHT OM field.

Abstract: A method and a device for transmitting updated information for an ML reconfiguration in a wireless LAN system are proposed. Specifically, a reception MLD performs an ML reconfiguration with a transmission MLD. The reception MLD transmits MLD capability information for the ML reconfiguration to the transmission MLD. The transmission MLD comprises a first transmission STA operating in a first link and a second transmission STA operating in a second link. The reception MLD comprises a first reception STA operating in the first link and a second reception STA operating in the second link. The MLD capability information includes information on a change in the number of links supported by the transmission and reception MLDs at the same time.

Abstract: The present specification proposes a restricted TWP operation applicable in an OBSS environment. According to an embodiment described in the present specification, a restricted TWT operation applicable in an OBSS environment can be performed by an STA regardless of the OBSS NAV if a more data field in the final data transmitted before the start of a restricted TWT SP is set to 0.