Abstract: A method and a device for performing a sensing procedure in a WLAN system are disclosed. A method of performing a sensing procedure by a first STA in a wireless LAN system comprises the steps of: receiving, from an AP, a first polling frame including first information related to participation in a first type of measurement for the first STA; transmitting, to the AP, a first response frame for the first polling frame; and receiving, from the AP, a second polling frame including the first information, on the basis of a second response frame not being transmitted to the AP from a second STA from among a plurality of STAs including the first STA, wherein the first polling frame may include second information related to participation in a second type of measurement for the second STA, and the second polling frame may not include the second information.

Abstract: Proposed are a method and device for acquiring information on links between MLDs in a wireless LAN system. Specifically, a receiving MLD transmits a probe request frame to a transmitting MLD through a first link. The receiving MLD receives a probe response frame from the transmitting MLD through the first link. The transmitting MLD comprises: a first transmitting STA operating in the first link; a second transmitting STA operating in a second link; and a third transmitting STA operating in a third link. The receiving MLD comprises a first receiving STA operating in the first link. When the first receiving STA requests for information on the second and third links, the probe request frame includes link identifiers for the second and third links. When the first receiving STA requests for information on all the links, the probe request frame does not include link identifiers for all the links.

Abstract: Provided are a compound, an infrared sensor, a combination sensor, and an electronic device. The compound is represented by Chemical Formula 1. The infrared sensor includes a first electrode and a second electrode facing each other, and an infrared photoelectric conversion layer between the first electrode and the second electrode, wherein the infrared photoelectric conversion layer includes the compound represented by Chemical Formula 1. In Chemical Formula 1, the definition of each substituent is as described in the detailed description.

Abstract: In a wireless local area network system, a station (STA) generates a physical (PHY) protocol data unit (PPDU) including at least one subframe and information related to a subframe length, wherein the subframe may include a medium access control (MAC) protocol data unit (MPDU) and a padding bit. The length of the padding bit may be determined such that the length of the subframes is an integer multiple of a codeword length. The information related to the subframe length may be information on the number of codewords related to the subframe length. A step in which the STA transmits the PPDU may be comprised.

Abstract: Proposed are a method and apparatus for performing sensing in a wireless LAN system. In detail, a first STA broadcasts a sensing request frame. The first STA receives a first sensing response frame form a second STA and receives a second sensing response frame from a third STA. The sensing request frame includes STA identifier information and RU allocation information. The STA identifier information includes identifiers of the second and third STAs. The RU allocation information includes information about a first RU allocated to the second STA and information about a second RU allocated to the third STA. The first sensing response frame is received through the first RU. The second sensing response frame is received through the second RU.

Abstract: The present specification defines a link adaptation control subfield applicable to a next-generation wireless LAN system including an EHT specification. According to an embodiment described in the present specification, the link adaptation control subfield may include a PS160 subfield. According to another embodiment described in the present specification, the link adaptation control subfield may include a 1-bit MRQ/uplink TB PPDU MFB subfield.

Abstract: A compound is represented by Chemical Formula 1. In Chemical Formula 1, R1 to R4, R11a to R14c, and n are the same as defined in the detailed description.

Abstract: Proposed are a method and a device for transmitting an NGV frame in a wireless LAN system. Specifically, a transmission device generates an NGV frame and transmits same via a first band. The NGV frame includes an L-STF, L-LTF, L-SIG, RL-SIG, NGV-SIG, NGV-STF, NGV-LTF and NGV-Data. The NGV-Data includes at least one midamble. The at least one midamble is generated on the basis of a sequence of the NGV-LTF. The sequence of the NGV-LTF includes two time sequences which, in a frequency domain, are mapped to a tone including two tone units, and in a time domain, are repeated in a single OFDM symbol. The at least one midamble includes one or two OFDM symbols.

Abstract: A method and a device for performing communication in a wireless LAN system are disclosed. A method by which a first station (STA) performs communication in a wireless LAN system may comprise the steps of: receiving, from an access point (AP), first information related to a restricted target wake time (r-TWT); receiving, from the AP, second information related to the extension of the end time of a service period (SP) of the r-TWT; and transmitting, to the AP, third information indicating whether to maintain an awake state until the end time of the extended SP.

Abstract: Disclosed are a method and apparatus related to a service period (SP)-based sensing procedure in a wireless LAN system. A method by which a first station (STA) performs a sensing procedure in a wireless LAN system, according to one embodiment of the present disclosure, may comprise the steps of: receiving, from a second STA, a target wake time (TWT) element including information indicating one or more SPs related to sensing; and performing a sensing operation on the basis of the one or more SPs.

Abstract: Disclosed are a method and device for communicating in a wireless LAN system. A method for a first station (STA) to communicate in a wireless LAN system comprises the steps of: transmitting, to a plurality of STAs, a first frame for forming a group that is to perform a sensing operation; transmitting a second frame, including information related to a sensing session, to at least one STA that has transmitted a first response frame to the first frame among the plurality of STAs; performing a first sensing operation with the at least one STA in a first sensing burst in the sensing session; and performing a second sensing operation with the at least one STA in a second sensing burst, following the first sensing burst, in the sensing session.

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: The present disclosure relates to a novel transition metal compound represented by the following Chemical Formula 1, which exhibits excellent catalytic activity for propylene polymerization, and is useful in the preparation of a polypropylene having a narrow molecular weight distribution and a high melting point, a catalyst composition including the same, and a method for preparing a polypropylene using the same, wherein M, X1, X2, and R1 to R8 are described herein.

Abstract: One embodiment according to the present specification relates to a technique for transmitting a long training field (LTF) signal in a wireless LAN (WLAN) system. The LTF signal may comprise an LTF sequence transmitted on the basis of a plurality of subcarriers. For example, a minimum subcarrier index of a plurality of subcarriers may be set to ?28, and a maximum subcarrier index of the plurality of subcarriers may be set to 28. A pilot tone may be inserted/allocated to four subcarriers from among a plurality of subcarriers.

Abstract: According to various embodiments, a multi-link device (MLD) operating in multiple links including a first link may transmit, through a first station (STA) and to a first AP of an AP multi-link device, a request frame including an information field for requesting at least one element related to a second link. The multi-link device may receive at least one element related to the second link on the basis of the request frame.

Abstract: Disclosed are a method and device for performing a sensing procedure in a wireless LAN system. A method for a first station (STA) to perform a sensing procedure in a wireless LAN system comprises the steps of: receiving, from a second STA, first information related to the number of LTF symbols repeated for each spatial stream; and receiving at least one NDP based on the first information from the second STA, wherein the total number of the LTF symbols included in each of the at least one NDP may be based on the number of the spatial streams and the first information.

Abstract: A method for a non-simultaneous transmit and receive (non-STR) device in a wireless local area network (LAN) is provided. The non-STR device may support a multi-link communication related to a first link and a second link. The non-STR device may determine whether to transmit a first physical protocol data unit (PPDU), PPDU, based on a channel access result on the first link and a channel access result on the second link. The non-STR device determines not to transmit the first PPDU through the first link and keeps the back-off counter of the first link at zero (0) when a back-off counter of the first link reaches zero (0) and a back-off counter of the second link does not reach zero (0).

Abstract: A method and a device for performing a sensing procedure in a wireless LAN system are disclosed. A method for performing a sensing procedure by a first station (STA) in a wireless LAN system may comprise the steps of: transmitting a sensing polling frame for identifying whether to participate in sensing measurement to first at least one STA participating in the sensing procedure; receiving a response frame with respect to the sensing polling frame from second at least one STA among the first at least one STA; and transmitting an NDP announcement frame to the second at least one STA on the basis of the response frame.

Abstract: In a wireless local area network (LAN) system, a station (STA) may transmit a first physical protocol data unit (PPDU) including information indicating that a first traffic identifier (TID) is mapped to a first link and a second TID is mapped to a second link. The STA may transmit traffic pertaining to the first TID through only the first link, and traffic pertaining to the second TID through only the second link.

Abstract: In a wireless local area network system, a reception multi-link device (MLD) may not transmit a CTS frame, even if the reception multi-link device receives an RTS frame via a second link, in the case that an STA operating via a first link is a TXOP responder.