METHOD AND DEVICE FOR TRANSCEIVING FRAME IN WIRELESS LAN SYSTEM

Provided is a method and device for transceiving a frame in a wireless LAN system. Particularly, an AP transmits a first frame to a first STA via a first band. The AP receives a second frame from a second STA via a second band while the first frame is being transmitted. The first band and the second band are combined with each other as a multi-band. The multi-band simultaneously supports a DL transmission and a UL transmission. The relationship between the first STA and the second STA is a hidden node. A PHY header of the first frame includes channel status information of the second band. An NAV of the first STA is set up on the basis of the channel status information.

METHOD AND DEVICE FOR SWITCHING BETWEEN 320 MHZ CHANNELS IN WIRELESS LAN SYSTEM

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.

METHOD AND DEVICE FOR ACQUIRING INFORMATION ON LINKS BETWEEN MLDS IN WIRELESS LAN SYSTEM

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.

METHOD AND APPARATUS FOR REQUESTING COMPLETE INFORMATION OR PARTIAL INFORMATION ON APS IN TRANSMISSION MLD IN WIRELESS LAN SYSTEM

Provided are a method and apparatus for requesting complete information or partial information on access points (APs) in a transmitting multi-link device (MLD) in a wireless local area network (WLAN) system. Specifically, a receiving MLD transmits a probe request frame to the 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 includes a first transmitting station (STA) operating in the first link and a second transmitting STA operating in a second link. The receiving MLD includes a first receiving STA operating in the first link and a second receiving STA operating in the second link. The probe request frame includes a profile field of the second receiving STA.

PRIORITY-BASED TRANSMISSION METHOD AND DEVICE ASSOCIATED WITH TARGET WAKE TIME OPERATION IN WIRELESS LAN SYSTEM

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.

RESTRICTED TWT OPERATION WHICH HAS BEEN IMPROVED

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.

TECHNIQUE FOR PERFORMING MULTI-LINK COMMUNICATION IN WIRELESS COMMUNICATION SYSTEM

According to various embodiments, a multi-link device operating in a plurality of links can transmit, via a first link, a request frame for changing the first link from among the plurality of links to a second link not included in the plurality of links. The multi-link device can receive a response frame via the first link on the basis of the request frame. The multi-link device can change the first link to the second link on the basis of the response frame.

HARQ OPERATION AT PHY LAYER LEVEL

The present invention relates to a method for an HARQ operation at a PHY layer level in a wireless LAN system or an apparatus for performing same. The method is characterized in receiving, from a transmission STA, a PPDU including a receiver ID which is a PHY layer signal, performing an error check on the PPDU, on the basis of the error check, transmitting an HARQ feedback frame which is a PHY layer signal, and receiving a retransmission PPDU. 1. A method performed by a receiving station (STA) in a wireless local area network system , the method comprising:receiving, from a transmitting STA, a physical protocol data unit (PPDU),wherein the PPDU includes receiver identifier (ID) information, wherein the receiver ID information is a physical (PHY) layer signal, and wherein the PPDU is a PPDU transmitted only to the receiving STA;performing a first error check on the PPDU, wherein the first error check is performed in a PHY layer;transmitting, to the transmitting STA, a hybrid automatic repeat request (HARQ) feedback frame based on the first error check, wherein the HARQ feedback frame is a PHY layer signal; andreceiving, from the transmitting STA, a retransmission PPDU,wherein the retransmission PPDU is a PPDU retransmitted based on the HARQ feedback frame, and wherein the retransmission PPDU includes the receiver ID information.2. The method of claim 1 , wherein the receiver ID information is a hash value of an association ID (AID).3. The method of claim 1 , wherein the receiver ID information includes a HARQ STA ID.4. The method of claim 3 , wherein the method claim 3 , performed by the receiving STA claim 3 , further comprising claim 3 ,receiving, from the transmitting STA, an allocation of a HARQ STA ID of the receiving STA.5. The method of claim 1 , wherein the method claim 1 , performed by the receiving STA claim 1 , further comprising claim 1 ,performing HARQ combining on the PPDU and the retransmission PPDU; andperforming a second error check based on a HARQ ...

METHOD AND DEVICE FOR SIGNALING ERSP IN WIRELESS LAN SYSTEM

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.

TECHNIQUE FOR PERFORMING MULTI-LINK COMMUNICATION IN WIRELESS COMMUNICATION SYSTEM

According to various embodiments, a multi-link device (MLD) may transmit, to an access point (AP), a request frame for activating a power saving mechanism (PSM). The multi-link device may receive a response frame for activating the PSM. The multi-link device may activate the PSM in at least one of a first link or the second link on the basis of the response frame.

METHOD AND DEVICE FOR TRANSMITTING SIGNAL THROUGH MULTI-LINK IN WIRELESS LAN SYSTEM

A method for operation in a wireless local area network (WLAN) system according to various embodiments may comprise the steps of: determining, by a transmitting device, whether a second link is in an idle state for a first time interval, after receiving an ACK through a first link within a TXOP configured for the first link; aggregating, by the transmitting device, the first link and the second link on the basis of the determination; and transmitting, by the transmitting device, a packet through the aggregated first link and second link.

METHOD FOR CHANGING CHANNEL IN MULTI-LINKS

Presented are a method by which a transmitting device performs channel switching between multi-links in a wireless local area network (LAN) system, and a device. Particularly, the method comprises the steps of: transmitting multi-link channel switching capability information to a receiving device, wherein the multi-link channel switching capability information includes information related to whether the transmitting device can perform channel changing between multi-link channels; transmitting a physical protocol data unit (PPDU) to the receiving device through a first link; transmitting a multi-link channel change signal to the receiving device through the first link; and transmitting the PPDU to the receiving device through a second link.

ACQUISITION OF IMPORTANT INFORMATION IN POWER-SAVING MODE

In a Wireless Local Area Network system, an STA MLD may include a first STA and a second STA, and an access point (AP) MLD may include a first AP and a second AP. The first STA and the first AP operate over a first link, the second STA and the second AP operate over a second link, and the second STA may be in a doze state. The first STA may receive, through the first link, a notice frame including information related to a critical update that has occurred in the second AP. The second STA may acquire, from the first STA, information related to the critical update. The notice frame may include a management frame.

RESTRICTED TWT IN OBSS ENVIRONMENT

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.

METHOD AND DEVICE FOR ACQUIRING CRITICAL UPDATE INFORMATION OF ANOTHER AP IN TRANSMITTING MLD IN WIRELESS LAN SYSTEM

Proposed are a method and device for acquiring critical update information of an AP in a transmitting MLD, on the basis of a TIM frame, in a wireless LAN system. Specifically, a receiving MLD receives a TIM frame from a transmitting MLD through a first link. The receiving MLD decodes the TIM frame. 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. The TIM frame comprises a check beacon field and a MLD change sequence field. The check beacon field comprises critical update information of the first transmitting STA. The MLD change sequence field comprises critical update information of the second and third transmitting STAs.

ACK TRANSMISSION IN MULTI-LINK

The present disclosure is related to a multi-link device (MLD) in a wireless local area network (LAN). The MLD in the present disclosure includes a first station (STA) operating on a first link and a second STA operating on a second link. The MLD may transmit acknowledgement (ACK) sharing information which is related to whether ACKs can be shared between the first STA and the second STA.

MPDU PADDING FOR HARQ OPERATION

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.

TECHNIQUE FOR CONTROLLING PLURALITY OF WIRELESS COMMUNICATION LINKS

One embodiment according to the present specification relates to a method for transmitting, from a first link, information for setting a NAV in a second link. When transmission STA performs communication through a second link, the transmission STA can transmit, through a first link, information for setting the NAV for the second link in another STA. Particularly, the transmission STA can receive, from the second reception STA, a second frame through the second link. The transmission STA can transmit, to a first reception STA, a first frame through the first link during the reception of the second frame. The first frame can include information for setting the NAV for the second link. The first reception STA can set the NAV for the second link on the basis of the first frame. 1. A method performed in a wireless local area network (WLAN) system , the method comprising:receiving, by a transmitting station (STA) supporting multiple links including a first link and a second link, a second frame from a second receiving STA through the second link; andtransmitting, by the transmitting STA, a first frame including information for setting a network allocation vector (NAV) for the second link to a first receiving STA through the first link, while receiving the second frame.2. The method of claim 1 ,wherein the information for setting the NAV for the second link includes first information field related to a duration value for setting the NAV for the second link.3. The method of claim 1 ,wherein the information for setting the NAV for the second link includes a second information field related to a difference between an end point of the first frame and an end point of the second frame, andwherein the information for setting the NAV for the second link further includes a third information field related to a transmission length of the first frame.4. The method of claim 1 ,wherein the information for setting the NAV for the second link is included in a header of a physical layer of ...

METHOD AND DEVICE FOR PERFORMING SENSING IN WIRELESS LAN SYSTEM

A transmission STA in a wireless local area network system can transmit a sensing start frame. The sensing start frame can comprise information relating to a feedback method and feedback frequency. The feedback method can comprise information relating to at least one of an explicit feedback, implicit feedback and hybrid feedback. The transmission STA can transmit a sensing frame to a reception STA. The transmission STA can receive from the reception STA a feedback frame comprising channel state information obtained on the basis of the sensing frame. The sensing start frame can further comprise information relating to the number of sensing frame transmissions. The information relating to feedback frequency can comprise information relating to the number of received sensing frames prior to the transmission of the feedback frame by the reception STA.

METHOD AND APPARATUS FOR PERFORMING SENSING IN WIRELESS LAN SYSTEM

A transmitting STA can transmit a sensing initiation frame to a first receiving STA in a wireless local area network (wireless LAN) system. The sensing initiation frame can include information related to an STA for transmitting a sounding frame and a session identifier (ID) related to an STA group that is to perform sensing. The transmitting STA can transmit the sounding frame to the first receiving STA. The transmitting STA can receive a first feedback frame for the sounding frame from the first receiving STA. The sounding frame can be a frame transmitted to identify a target. The first feedback frame can include information about a channel changed by means of the target. The sounding frame can include a null data packet announcement (NDPA) frame and a null data packet (NDP) frame.

METHOD FOR PERFORMING MULTI-LINK COMMUNICATION IN WIRELESS COMMUNICATION SYSTEM

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.

METHOD AND APPARATUS FOR SIGNALING RSP ON BASIS OF TWT INFORMATION FRAME IN WIRELESS LAN SYSTEM

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.

LINK ADAPTATION CONTROL

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.

TECHNIQUE FOR PERFORMING MULTI-LINK COMMUNICATION IN WIRELESS COMMUNICATION SYSTEM

According to various embodiments, a multi-link device including a first STA and a second STA may receive, via the first STA, at least one PPDU within a transmission opportunity (TXOP) configured in a first link. While the at least one PPDU is received, the state of the second STA may be set to a doze state. The multi-link device may receive, via the first STA, a first control frame for the truncation of the TXOP. The multi-link device may change the state of the second STA from the doze state to an awake state on the basis of the first control frame.

TRANSMISSION OF CAPABILITY INFORMATION ABOUT LINK

The present disclosure relates to a method performed by a non-access point (AP) station (STA) multi-link device (MLD) of a wireless LAN system, the method comprising the steps of: transmitting, through a first link, a negotiation frame including first maximum number of spatial stream (NSS) information to an AP MLD; and receiving a negotiation response frame from the AP MLD through the first link.

METHOD AND APPARATUS FOR TRANSMITTING PPDU IN WIRELESS COMMUNICATION SYSTEM

One example according to the present specification relates to a scheme for transmitting a PPDU in a wireless LAN (WLAN) system. A transmission STA can determine whether both a first channel and a second channel are idle. The transmission STA can configure backoff count values associated with the first channel and the second channel. The transmission STA can reduce the backoff count values on the basis of the first channel and the second channel. The transmission STA can transmit an NGV PPDU on the basis of the backoff count values. 1. A wireless local area network system , comprising:determining, by a transmission STA, whether both a first channel set to 10 MHz and a second channel set to 10 MHz are idle;decreasing, by the transmission STA, a backoff count value for the first channel and the second channel based on the determination that both the first channel and the second channel are idle; andtransmitting, by the transmission STA, a Next Generation Vehicular (NGV) Physical Protocol Data Unit (PPDU) through the first channel and the second channel based on a condition that the backoff count value is set to a first value.2. The method of claim 1 , further comprising:determining, by the transmission STA, whether a reception power of the first channel is a preset value or smaller;determining, by the transmission STA, whether a reception power of the second channel is a preset value or smaller; anddetermining, by the transmission STA, whether both the first channel and the second channel are idle based on a condition that both the reception powers of the first channel and the second channel are the preset value or smaller.3. The method of claim 2 , wherein the preset value is set to −85 dBm or −65 dBm.4. The method of claim 1 , wherein the backoff count value is set to one backoff count value for the first channel and the second channel.5. The method of claim 1 , wherein the first value is set to {0}.6. The method of claim 1 , wherein the NGV PPDU is transmitted in 5. ...

SIGNAL TRANSMISSION USING MULTI-LINK IN WIRELESS LAN SYSTEM

In a wireless local area network (LAN) system, a first station (STA) may check the transfer failure of a first acknowledgement (ACK) signal for a first frame, the signal being received through a first link. The first STA may transmit report information related to the transfer failure of the first ACK signal to a second STA through a second link. Here, the report information may include identification information associated with the first link. The first STA may receive a second frame from the second STA through the first link. The first STA may transmit a second ACK signal for the second frame to the second STA through the first link on a narrowband. 1. A method in a Wireless Local Area Network (LAN) system , the method comprising:confirming, by a first station (STA), a delivery failure of a first acknowledgment (ACK) signal for a first frame received through a first link;transmitting, by the first STA to a second STA, report information related to the delivery failure of the first ACK signal through a second link, wherein the report information includes identification information related to the first link;receiving, by the first STA, a second frame from the second STA through the first link; andtransmitting, by the first STA to the second STA, a second ACK signal for the second frame in a narrowband through the first link.2. The method of claim 1 , wherein the confirming the delivery failure of the first ACK signal comprises:receiving, by the first STA, the first frame from the second STA through the first link;transmitting, by the first STA to the second STA, the first ACK signal for the first frame through the first link; andreceiving, by the first STA, the first frame from the second STA through the first link.3. The method of claim 1 , further comprising:before transmitting the second ACK signal, receiving, by the first STA, a narrowband ACK request message from the second STA through the first link4. The method of claim 1 , wherein each of the first and second ...

MULTI-LINK CHANNEL ACCESS

In a wireless local area network (WLAN) system, a transmitting multi-link device (MLD) may defer the transmission of a PPDU on a first link, even if a back-off counter of a non-primary link reaches zero, as long as a back-off counter of a primary link does not reach zero. When the transmission of the PPDU is deferred, the back-off counter may be kept at zero.

METHOD AND APPARATUS FOR REQUESTING COMPLETE INFORMATION OR PARTIAL INFORMATION ON APS IN TRANSMISSION MLD IN WIRELESS LAN SYSTEM

Provided are a method and apparatus for requesting complete information or partial information on access points (APs) in a transmitting multi-link device (MLD) in a wireless local area network (WLAN) system. Specifically, a receiving MLD transmits a probe request frame to the 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 includes a first transmitting station (STA) operating in the first link and a second transmitting STA operating in a second link. The receiving MLD includes a first receiving STA operating in the first link and a second receiving STA operating in the second link. The probe request frame includes a profile field of the second receiving STA.

TECHNIQUE FOR TRANSMITTING AND RECEIVING FRAME IN WIRELESS COMMUNICATION SYSTEM

An example according to the present specification relates to a method for transmitting an NGV PPDU. A transmission STA may generate an NGV PPDU, and may transmit the NGV PPDU. The NGV PPDU may include a plurality of fields. The NGV PPDU may be transmitted according to various bandwidths and frequency spacings. The NGV PPDU may be transmitted on the basis of a guard region having a first subcarrier index range, a direct current (DC) region having a second subcarrier index range, and a data and pilot area having a third subcarrier index range. 1. A method for transmitting a frame in a Wireless Local Area Network (WLAN) system , the method comprising:generating a Next Generation Vehicular network (NGV) Physical Protocol Data Unit (PPDU) including a legacy control field, an NGV control field, and an NGV data field; andtransmitting the NGV PPDU, wherein a bandwidth of the NGV PPDU is 20 MHz, and the NGV PPDU is transmitted based on frequency spacing of 156.25 kHz, andwherein the NGV PPDU is transmitted based on a guard region having a first sub-carrier index range, a Direct Current (DC) region having a second sub-carrier index range, and a data and pilot region having a third sub-carrier index range.2. The method of claim 1 , wherein the NGV PPDU is generated based on a sub-carrier index range of a 40 MHz Very High Throughput (VHT) PPDU having 2× down-clocking applied thereto.3. The method of claim 2 , wherein the first sub-carrier index range is configured of [−64:−59 claim 2 , 59:63] claim 2 ,wherein the second sub-carrier index range is configured of [4:1], andwherein the third sub-carrier index range is configured of [−58:−2, 2:58].4. The method of claim 3 , wherein the third sub-carrier index range is configured to include 6 pilot tones.5. The method of claim 1 , wherein the step of transmitting the NGV PPDU comprises:transmitting the NGV PPDU through a 5.9 GHz band, based on a transmit spectrum mask.6. The method of claim 1 , wherein the NGV PPDU includes ...

LINK SETUP FOR MULTILINK OPERATION

In a wireless local area network (LAN) system, an STA of a multi-link device (MLD) may transmit MAC addresses of other STAs included in the same MLD as the STA in a link setup step. The MAC addresses of other STAs may be included multi-link address information. The multi-link address information may be included in a Multi-link Element defined in a conventional Management frame such as a Beacon Frame, a Probe Response Frame, an Association Request Frame, and an Association Response Frame.

METHOD AND DEVICE FOR TRANSMITTING ML ELEMENT FOR ML RECONFIGURATION IN WIRELESS LAN SYSTEM

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.

TECHNIQUE FOR TRANSMITTING MIDAMBLE IN WIRELESS COMMUNICATION SYSTEM

One embodiment according to the present specification relates to a technique for transmitting a midamble in a wireless LAN (WLAN) system. A transmitting STA may configure an NGV PPDU. The NGV PPDU may include a preamble, a data field, and a midamble. The preamble may include an NGV signal field. The NGV signal field may include information on a transmission period of the midamble. 1. A method performed by a transmitting station (STA) of a Wireless Local Area Network (WLAN) system , the method comprising:configuring a Next Generation V2X Physical Protocol Data Unit (NGV PPDU),wherein the NGV PPDU includes a preamble, an NGV data field that is contiguous to the preamble, and a midamble that is contiguous to the NGV data field,wherein the preamble includes a legacy signal field, a repeated control field in which the legacy signal field is repeated, and an NGV signal field including control information for interpreting the NGV PPDU,wherein the NGV signal field includes information related to a transmission periodicity of the midamble,wherein the legacy signal field is transmitted through a first symbol,wherein the repeated control field is transmitted through a second symbol that is contiguous to the first symbol, andwherein the NGV signal field is transmitted through a third symbol that is contiguous to the second symbol; andtransmitting the NGV PPDU to a receiving STA.2. The method of claim 1 , wherein the preamble includes at least one first Long Training field (LTF) claim 1 , andwherein the midamble includes at least one second LTF.3. The method of claim 1 , wherein each of the first symbol claim 1 , the second symbol claim 1 , and the third symbol has a symbol duration of 8 μs.4. The method of claim 1 , wherein subcarrier spacing of the NGV PPDU is set to 156.25 kHz.5. The method of claim 1 , wherein information related to a transmission periodicity of the midamble is configured as 2-bit information.6. The method of claim 1 , wherein a transmission periodicity of ...

NACK FRAME FOR HARQ OPERATION

In a wireless local area network (LAN) system, a transmission station (STA) may transmit, to a receiving STA, a PHY protocol data unit (PPDU) including a first redundancy version of transmission data. On the basis of whether an acknowledgement (ACK) or negative ACK (NACK) frame is received within a threshold time, the transmission STA may determine a second redundancy version of the transmission data to be retransmitted.

PROTECTION OF RESTRICTED TWT OPERATION

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.

TECHNIQUE FOR PERFORMING MULTI-LINK COMMUNICATION IN WIRELESS COMMUNICATION SYSTEM

According to various embodiments, a multi-link device (MLD) operating in a plurality of links can receive a PPDU through a first link from among the plurality of links. The PPU can include a first information field related to a second link that is differentiated from the first link. The first information field related to a second link can include a second information field related to a link identifier of a second link and a third information field related to whether all pieces of element information related to a second link is included in the PPDU.

METHOD FOR SUPPORTING DUAL CONNECTIVITY IN WIRELESS LAN SYSTEM AND WIRELESS TERMINAL USING SAME

A method for supporting dual connectivity performed by a STA connected to a first AP and a second AP in a WLAN according to one embodiment includes: determining whether a predetermined AP change condition is satisfied while performing uplink transmission based on a first operating band for the first AP; transmitting an AP change request frame to the first AP in order to perform uplink transmission based on a second operating band for the second AP when it is determined that the AP change condition is satisfied; receiving an AP change response frame from the first AP in response to the AP change request frame; performing a channel switch operation from the first operating band to the second operating band when the AP change request frame is received; and transmitting an uplink frame to the second AP based on the second operating band. 1. A method for supporting dual connectivity performed by a station (STA) connected to a first access point (AP) and a second AP in a wireless local area network system (WLAN) , the method comprising:determining whether a predetermined AP change condition is satisfied while performing uplink transmission based on a first operating band for the first AP;transmitting an AP change request frame to the first AP in order to perform uplink transmission based on a second operating band for the second AP when the AP change condition is satisfied;receiving an AP change response frame from the first AP in response to the AP change request frame;performing a channel switch operation from the first operating band to the second operating band when the AP change request frame is received; andtransmitting an uplink frame to the second AP based on the second operating band.2. The method of claim 1 , wherein the AP change request frame comprises information related to time when an operating band for the STA is changed from the first operating band to the second operating band based on the channel switch operation3. The method of claim 1 , wherein the AP ...

ACK TRANSMISSION USING MULTI-LINK

In a wireless local area network, a reception station (STA) may receive, from a transmission STA, a first signal via a first link and a second signal via a second link. The reception STA may transmit, to the transmission STA via the second link, a response signal associated with whether the first and second signals are to be received. The response signal may include a first field associated with the feature of the response signal including responses with respect to whether a plurality of signals transmitted via a plurality of links are to be received. 1. A method in a wireless local area network (WLAN) system , the method comprising:receiving, by a receiving station (STA) from a transmitting STA, a first signal through a first link and a second signal through a second link; andtransmitting, by the receiving STA to the transmitting STA through the second link, a response signal related to whether the first and second signals are received,wherein the response signal includes a first field related to that the response signal includes a response to whether a plurality of signals transmitted through a plurality of links are received.2. The method of claim 1 , wherein the first signal and the second signal are received simultaneously.3. The method of claim 1 , wherein the second signal is received after receiving the first signal.4. The method of claim 1 , wherein the second signal includes a second field related to a request whether the first signal and the second signal are received.5. The method according to claim 1 , wherein the method further comprises claim 1 ,after the receiving STA receives the first and second signals and before the receiving STA transmits the response signal,receiving, by the receiving STA from the transmitting STA, a block acknowledgment request (BAR) frame,wherein the BAR frame includes information related to a request whether the first signal and the second signal are received.6. The method according to claim 1 , wherein the first field is a ...

METHOD AND DEVICE FOR ACQUIRING INFORMATION ON LINKS BETWEEN MLDS IN WIRELESS LAN SYSTEM

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 fr ame 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.

METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING PROTOCOL DATA UNIT-RELATED INFORMATION IN WIRELESS LAN SYSTEM

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.

METHOD AND DEVICE FOR PERFORMING SENSING IN WIRELESS LAN SYSTEM

In a wireless local area network system, a transmission STA may transmit a sensing start frame. The sensing start frame may include information related to the entire band in which WLAN sensing is performed, information related to a reception STA participating in the WLAN sensing, and information related to the number of bands K sensed by each reception STA and the bandwidth of the band sensed by the each reception STA. A transmission STA may transmit a sounding signal to the reception STA. A transmission STA may receive a feedback frame for the sounding signal from the reception STA. The feedback frame may include channel state information for K bands in the order of better channel state among the entire band.

METHOD AND DEVICE FOR PERFORMING SENSING IN WIRELESS LAN SYSTEM

In a wireless local area network (LAN) system, a transmission STA may generate capability information related to WLAN sensing. The capability information may comprise a common part and an individual part. The common part may comprise sensing support band information including information related to whether WLAN sensing performed in a sub 7 GHz band is supported, and information related to whether WLAN sensing performed in a 60 GHz band is supported. The individual part may comprise, on the basis of the sensing support band information, at least one of capability information for WLAN sensing performed in the sub 7 GHz band, and capability information for WLAN sensing performed in the 60 GHz band. The transmission STA may transmit the capability information to a reception STA.

METHOD AND APPARATUS FOR RECEIVING IMPORTANT UPDATE INFORMATION ON APS IN TRANSMISSION MLD IN A WIRELESS LAN SYSTEM

Provided are a method and apparatus for receiving only complete information on other access points (APs) in a transmitting multi-link device (MLD) in a wireless local area network (WLAN) system. Specifically, a receiving MLD transmits a probe request frame to the transmitting MLD through a first link. The receiving MLD receives a probe response frame from the transmitting MLD through the first link. The probe request frame includes a frame body and a profile field of a second receiving station (STA). When a first receiving STA does not request complete information on the first link and requests complete information on the second link, the complete information on the second link is requested based on the profile field of the second receiving STA. The probe response frame does not include the complete information on the first link, and includes only the complete information on the second link. 1. A method in a wireless local area network (WLAN) system , the method comprising:transmitting, by a receiving multi-link device (MLD), a probe request frame to a transmitting MLD through a first link; andreceiving, by the receiving MLD, a probe response frame from the transmitting MLD through the first link,wherein the transmitting MLD includes a first transmitting station (STA) operating in the first link and a second transmitting STA operating in a second link,wherein the receiving MLD includes a first receiving STA operating in the first link and a second receiving STA operating in the second link,wherein the probe request frame includes a frame body and a profile field of the second receiving STA,wherein when the first receiving STA does not request complete information on the first link and requests complete information on the second link, the complete information on the second link is requested based on the profile field of the second receiving STA, andwherein the probe response frame does not include the complete information on the first link, and includes only the ...

METHOD AND DEVICE FOR TRANSMITTING AND RECEIVING IMPORTANT UPDATE INFORMATION OF ANOTHER AP THROUGH ML ELEMENT IN WLAN SYSTEM

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.

IMPROVED WIRELESS LAN SENSING PROCEDURE

The present specification proposes a new procedure of signal transmission or reception between STAs in a case of sensing measurement initiated by an STA rather than an AP. According to an embodiment of the present specification, proposed is a sensing measurement procedure performed by an AP in response to transmission of a sensing initiation frame to the AP by an STA rather than the AP. According to another embodiment of the present specification, according to an embodiment of the present specification, proposed is a procedure in which an STA rather than an AP transmits a sensing initiation frame to the AP, and then the AP requests respondent STAs to transmit NDP frames. According to yet another embodiment of the present specification, proposed is a method for configuring a frame transmitted or received in the above procedures.

POWER SAVING IN NSTR ENVIRONMENT

In a wireless local area network system, a transmission MLD may comprise a first station (STA) and a second STA, wherein the first STA operates on a first link and the second STA operates on a second link. The transmission MLD may transmit, to a reception MLD, capability information regarding whether power saving is supported. The power saving may be performed by one method among first to third power saving methods. The transmission MLD may transmit, to the reception MLD, a control frame comprising method information regarding which method among the first to third power saving methods is to be used.

WLAN SENSING BASED ON MULTIPLE CHANNEL OR RESOURCE

The present specification proposes various technical characteristics that may be applied to a Wireless Local Area Network (WLAN) sensing. For example, the present specification proposes a procedure for WLAN sensing using multiple channels or multiple resources. The same or different channels and/or resources may be allocated to at least one wireless device performing the WLAN sensing. The at least one wireless device may perform measurement and signal transmission/reception processes that are included in the WLAN sensing by using the channel(s) and/or resource(s). 1. A method performed in a Wireless Local Area Network (WLAN) system , the method comprising:receiving, by a receiving station (STA), a physical protocol data unit (PPDU) for a sensing operation from a transmitting STA,wherein the PPDU includes at least one control field, andwherein the at least one control field includes allocation information related to a sensing unit;performing, by the receiving STA, a sensing operation for the sensing unit based on the PPDU; andtransmitting, by the receiving STA, a result of the sensing operation through the sensing unit.2. The method of claim 1 , wherein the sensing unit is a resource unit (RU) claim 1 ,wherein the at least one control field includes an RU allocation subfield, andwherein the RU allocation subfield indicates an RU that is allocated for the receiving STA.3. The method of claim 1 , wherein the at least one control field includes user-specific fields claim 1 , andwherein a number of the user-specific fields is determined based on a number of wireless devices performing the sensing operation including the receiving STA.4. The method of claim 1 , wherein the at least one control field includes an STA-identifier (ID) for the receiving STA.5. The method of claim 1 , wherein the sensing unit is a subchannel claim 1 , andwherein the subchannel is part of a frequency bandwidth through which the PPDU is transmitted.6. The method of claim 5 , wherein a size of a ...

METHOD AND APPARATUS FOR RECEIVING IMPORTANT UPDATE INFORMATION VIA MULTI-LINK ELEMENT IN WIRELESS LAN SYSTEM

Proposed are a method and apparatus for receiving important update information via a multi-link element in a wireless LAN system. In detail, a reception MLD receives a multi-link element from a transmission MLD via a first link. The reception MLD decodes the multi-link element. The transmission MLD includes a first transmission STA operating in the first link and a second transmission STA operating in a second link. The multi-link element includes common information and link-specific information. The common information is changed when an important update occurs for the second transmission STA.

TRIGGER FRAME TRANSMISSION IN WIRELESS COMMUNICATION SYSTEM

In a Wireless Local Area Network system, an STA may receive a trigger frame from an AP. The trigger frame may include a common information field and user information fields. Each of the user information fields may include a first field related to an association identifier (AID) and a second field including information for the STA related to the AID. The second field may include special information for every STA receiving the trigger frame on the basis that the first field has a specific value. The common information field may include a present field related to whether a user information field in which the first field has the specific value is present among the user information fields.

CHANNEL ACCESS OF NON-STR MLD IN MULTI-LINK

A transmitting multi-link device (MLD) in a wireless local area network system enables a first station (STA) to perform a back-off operation again without transmitting PPDU, if a second STA is in the middle of receiving even when a back-off counter (BC) of the first STA becomes 0. The first STA and the second STA are included in the same transmitting MLD. The first STA operates on a first link and the second STA operates on a second link. The first and second links are included in a non-simultaneous transmit and receive (NSTR) link pair.

PUNCTURING-BASED 240 MHZ TRANSMISSION

In a wireless local area network (WLAN) system, a transmission STA can transmit a PPDU via a 320 MHz channel, and a Medium Access Control (MAC) signal may be generated for the PPDU. The MAC signal may include puncturing pattern information and channel center frequency segment (CCFS) information for a 320 MHz band. The CCFS information may include a first CCFS field related to channel center frequency (CCF) information of a primary 160 MHz channel, and a second CCFS field related to CCF information of a 320 MHz channel.

MULTI-LINK ERROR RECOVERY

The present disclosure proposes a transmitting multi-link device (MLD) including a first station (STA) operating on a first link and a second STA operating on a second link. The transmitting MLD acquires a first transmission opportunity (TXOP) in the first link and transmits a first physical protocol data unit (PPDU) in the first link. The transmitting MLD receives a block acknowledgment (BA) frame for the first PPDU in the first link and transmits a second PPDU in the first link. The transmitting MLD changes a responder of the first TXOP based on not receiving, from the receiving MLD, a BA frame for the second PPDU within a preconfigured time interval in the first link.

METHOD AND DEVICE FOR CONFIGURING NGV FRAME FOR WIDEBAND TRANSMISSION IN WIRELESS LAN SYSTEM

A method and device for transmitting an NGV frame in a wireless LAN system is proposed. Specifically, a transmission device generates an NGV frame and transmits the NGV frame through a first band. The NGV frame includes an L-STF, an L-LTF, an L-SIG, an NGV-SIG, an NGV-STF, an NGV-LTF, and NGV-Data. The L-STF, the L-LTF, the L-SIG, and the NGV-SIG are duplicated in units of second bands and transmitted through the first band. The NGV-STF, the NGV-LTF, and the NGV-Data are transmitted through a full band of the first band. The first band is a 20 MHz band, and a second band is a 10 MHz band. 1. A method for transmitting a New Generation Vehicular (NGV) frame in a wireless LAN system , the method comprising:generating, by a transmitting device, the NGV frame; andtransmitting, by the transmitting device, the NGV frame to a receiving device through a first band,wherein the NGV frame includes Legacy-Short Training Field (L-STF), Legacy-Long Training Field (L-LTF), Legacy-Signal (L-SIG), NGV-SIG, NGV-STF, NGV-LTF, andNGV-Data,wherein the L-SIG and the NGV-SIG are duplicated in units of a second band and transmitted through the first band,wherein the NGV-STF and the NGV-LTF, and are transmitted through a full band of the first band,wherein the first band is a 20 MHz band, andwherein the second band is a 10 MHz band.2. The method of claim 1 , wherein the NGV frame further includes Repeated Legacy (RL)-SIG claim 1 ,wherein the RL-SIG is duplicated in units of the second band and transmitted through the first band,wherein the NGV frame includes a legacy part, the NGV-SIG, and an NGV part,wherein the legacy part includes the L-STF, the L-LTF, the L-SIG, and the RL-SIG,wherein the NGV part includes the NGV-STF, the NGV-LTF, and the NGV-Data,wherein the legacy part and the NGV-SIG are generated by performing 2×DownClocking (DC) on a frame format for a 20 MHz band defined in an 802.11a system, andwherein the NGV part is generated by performing 2×DownClocking (DC) on a frame format ...

METHOD AND DEVICE FOR CONFIGURING SPATIAL REUSE FIELD IN WIRELESS LAN SYSTEM

Proposed are a method and a device for configuring a spatial reuse field in a wireless LAN system. Specifically, a reception STA receives a trigger frame from a transmission STA. The reception STA transmits a TB PPDU to the transmission STA through a pre-configured frequency band. The trigger frame comprises a common information field and a special user information field. The common information field comprises first to fourth spatial reuse fields. The special user information field comprises fifth and sixth spatial reuse fields. When the pre-configured frequency band is a 20 MHz band, the first to fourth spatial reuse fields are configured by the value of the fifth spatial reuse field.

MAPPING OF TID AND LINK IN MULTI-LINK

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. 1. A method in a wireless local area network (WLAN) system , the method performed by a station (STA) and comprising:transmitting a physical protocol data unit (PPDU) comprising a control element including first information related to a first traffic identifier (TID) mapped to a first link and a second link and second information related to a second TID mapped to the second link;transmitting an add block acknowledgment (ADDBA) request frame for block acknowledgment (BA) agreement of the first TID via the first link, wherein the ADDBA request frame comprises the first TID;in response to the ADDBA request frame, receiving an ADDBA response frame via the first link; andestablishing, based on the ADDBA request frame and the ADDBA response frame, an BA agreement related to traffic of the first TID with the first link and the second link.2. The method of claim 1 ,wherein each of the first TID and the second TID has a length of 3 bits.3. The method of claim 1 ,wherein the ADDBA request frame comprises at least one parameter for transmitting a BA signal related to the first TID.4. The method of claim 1 , whereinthe STA applies, based on the ADDBA request frame and the ADDBA response frame, at least one BA-related parameter configured for the first link to the second link.5. The method of claim 1 , wherein BA signal to be transmitted via the second link is configured based on the ADDBA request frame and the ADDBA response frame.614-. (canceled)15. A method in a wireless local area network (WLAN) system claim 1 , the method performed by a station (STA) and comprising ...

TRIGGER FRAME TRANSMISSION IN WIRELESS COMMUNICATION SYSTEM

In a Wireless Local Area Network system, an STA may receive a trigger frame from an AP. The trigger frame may include a common information field and user information fields. Each of the user information fields may include a first field related to an association identifier (AID) and a second field including information for the STA related to the AID. The second field may include special information for every STA receiving the trigger frame on the basis that the first field has a specific value. The common information field may include a present field related to whether a user information field in which the first field has the specific value is present among the user information fields.

METHOD AND APPARATUS FOR RECEIVING MAC ADDRESS OF ANOTHER STA WITHIN RECEPTION MLD IN WIRELESS LAN SYSTEM

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.

METHOD AND DEVICE FOR REQUESTING PARTIAL INFORMATION ON APS IN TRANSMISSION MLD IN WIRELESS LAN SYSTEM

Proposed are a method and a device for requesting partial information on APs in a transmission MLD in a WLAN system. Specifically, a receiving MLD transmits a probe request frame to a transmission MLD through a first link. The receiving MLD receives a probe response frame from the transmission MLD through the first link. The probe request frame includes a profile field of the second receiving STA. The profile field of the second receiving STAincludes a first full information profile subfield. When the first receiving STA requests partial information on the second link, the value of the first full information profile subfield is set to 0, and the profile field of the second receiving STA further includes a first request element. The partial information on the second link is requested on the basis of the first request element.

METHOD AND DEVICE FOR CONTROLLING PLURALITY OF LINKS IN WIRELESS LOCAL AREA NETWORK SYSTEM SUPPORTING PLURALITY OF LINKS

According to various embodiments, a method performed in a wireless local area network (WLAN) system may comprise the steps of: receiving, by a first station (STA) supporting a first and a second link, a physical protocol data unit (PPDU) generated for a second STA, via the first link, the PPDU being received from a BSS to which the first STA belongs; setting, by the first STA, a first type NAV for the first link on the basis of the PPDU; and setting, by the first STA, a first type NAV for the second link on the basis of the PPDU.

CHANNEL ACCESS OF NON-STR MLD IN MULTI-LINK

A transmitting multi-link device (MLD) in a wireless local area network system enables a first station (STA) to perform a back-off operation again without transmitting PPDU, if a second STA is in the middle of receiving even when a back-off counter (BC) of the first STA becomes 0. The first STA and the second STA are included in the same transmitting MLD. The first STA operates on a first link and the second STA operates on a second link. The first and second links are included in a non-simultaneous transmit and receive (NSTR) link pair.

TECHNIQUE FOR MULTIPLE FRAME TRANSMISSION IN WIRELESS COMMUNICATION SYSTEM

One embodiment according to the present specification relates to a technique for multiple frame transmission in a wireless LAN (WLAN) system. A transmission STA can transmit a first next generation V2X physical protocol data unit (NGV PPDU) from among a plurality of NGV PPDUs for a multiple frame transmission mode. Afterwards, the transmission STA can identify a channel state for the transmission of a second NGV PPDU from among the plurality of NGV PPDUs. The transmission STA can determine, on the basis of the channel state, whether to transmit the second NGV PPDU. 1. A method performed by a transmitting station (STA) in a wireless local area network (WLAN) system , the method comprising:transmitting a first Next Generation V2X (NGV) Physical Protocol Data Unit (PPDU) among a plurality of NGV PPDUs configured for a multiple-frame transmission mode;after transmitting the first NGV PPDU, identifying a channel state for transmission of a second NGV PPDU among the plurality of NGV PPDUs; anddetermining whether to transmit the second NGV PPDU based on the channel state, wherein the plurality of NGV PPDUs are transmitted through a 5.9 GHz band based on a frequency spacing of 156.25 kHz in the multi-frame transmission mode.2. The method of claim 1 , the transmitting STA operates based on an Outside the Context of a Basic service set (OCB) broadcast.3. The method of claim 1 , further comprising:canceling the transmission of the second NGV PPDU based on the channel state being busy.4. The method of claim 3 , further comprising:performing channel access based on the canceling the transmission of the second NGV PPDU.5. The method of claim 1 , further comprising:transmitting the second NGV PPDU based on the channel state being an idle state.6. The method of claim 1 ,wherein the plurality of NGV PPDUs are transmitted within a Transmission Opportunity (TXOP) duration in the multiple-frame transmission mode.7. The method of claim 1 , further comprising:identifying the channel ...

METHOD AND DEVICE FOR TRANMITTING DATA IN WIRELESS LAN SYSTEM

A method and a device for transmitting data in a wireless LAN system are proposed. Specifically, an AP transmits a band switch announcement element through a first band supported by a first and a second RF. The AP changes the first band, supported by the second RF, to a second band on the basis of the band switch announcement element. The AP transmits first data to an STA through the first band supported by the first RF and the second band supported by the second RF. The first data is transmitted through a multiple band in which the first band and the second band are combined.

METHOD AND DEVICE FOR REQUESTING SAME PARTIAL INFORMATION FOR ALL TRANSMISSION STAS WITHIN TRANSMISSION MLD AND RESPONDING THERETO IN WIRELESS LAN SYSTEM

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.

WIRELESS LAN SENSING PROCEDURE

The present specification proposes a new procedure of signal transmission or reception between STAs in a case of sensing measurement initiated by an STA rather than an AP. According to an embodiment of the present specification, proposed is a sensing measurement procedure performed by an AP in response to transmission of a sensing initiation frame to the AP by an STA rather than the AP. According to another embodiment of the present specification, according to an embodiment of the present specification, proposed is a procedure in which an STA rather than an AP transmits a sensing initiation frame to the AP, and then the AP requests respondent STAs to transmit NDP frames. According to yet another embodiment of the present specification, proposed is a method for configuring a frame transmitted or received in the above procedures.

METHOD AND DEVICE FOR TRANSMITTING DATA IN WIRELESS LAN SYSTEM

A method and a device for transmitting data in a wireless LAN system are presented. Particularly, a transmission STA transmits information about a preamble puncturing pattern to a reception STA. The transmission STA transmits data to the reception STA through a 320 MHz band on the basis of the preamble puncturing pattern. The preamble puncturing pattern is determined on the basis of a first bandwidth unit in which a CCA is performed and a second bandwidth unit in which user specific information is repeated. At least one 20 MHz subchannel is punctured in the 320 MHz band on the basis of the preamble puncturing pattern.

METHOD AND DEVICE FOR CONFIGURING SPATIAL REUSE FIELD IN WIRELESS LAN SYSTEM

Proposed are a method and a device for configuring a spatial reuse field in a wireless LAN system. Specifically, a reception STA receives a trigger frame from a transmission STA. The reception STA transmits a TB PPDU to the transmission STA through a preconfigured frequency band. The trigger frame includes a common information field and a special user information field. The common information field includes a first to a fourth spatial reuse field. Values of the first to fourth spatial reuse fields are configured to 0 or 15.

METHOD AND DEVICE FOR TRANSMITTING DATA IN WIRELESS LAN SYSTEM

Proposed is a method and device for receiving data in a wireless LAN system. Specifically, an AP transmits a trigger frame to a first to a third station (STA) through a multi-band. The AP receives data from the first to third STAs on the basis of the trigger frame. In the multi-band, a first band to a third band are combined. The trigger frame includes a common information field and a first to a third user information field. When the first and second STAs are associated with the first band, the first user information field includes user information relating to the first and second STAs. When the second and third STAs are associated with the second band, the second user information field includes user information relating to the second and third STAs. When the third STA is associated with the third band, the third user information field includes user information relating to the third STA.

TECHNIQUE FOR TRANSMITTING LTF SIGNAL IN WIRELESS COMMUNICATION SYSTEM

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.

METHOD AND APPARATUS FOR TRANSMITTING PPDU ON BASIS OF S-TDMA IN WIRELESS LAN SYSTEM

A method and apparatus for transmitting a PPDU on the basis of S-TDMA in a wireless LAN system are presented. In particular, an AP generates a PPDU, and transmits the PPDU to a first STA and a second STA. When a PPDU further comprises a third signal field, the third signal field comprises information about S-TDMA. The information about S-TDMA comprises STDMA indication information indicating that S-TDMA can be carried out, first symbol offset information about a first data field, and second symbol offset information about a second data field. The S-TDMA indication information comprises information indicating that the first and second data fields are assigned to a first RU. The first data field is transmitted from the first RU during a first symbol determined on the basis of the first symbol offset information. The second data field is transmitted from the first RU during a second symbol determined on the basis of the second symbol offset information.

TECHNIQUE FOR PERFORMING MULTI-LINK COMMUNICATION IN WIRELESS COMMUNICATION SYSTEM

According to various embodiments, a multi-link device (MLD) comprising a first STA and a second STA may perform the steps of: receiving, from an access point (AP) via the first STA operating in a first link, network allocation vector (NAV) time information about the second STA operating in a second link, wherein, when the NAV time information about the second STA is received, the second STA operates in a doze state; identifying that the state of the second STA is changed from the doze state to an awake state; and setting an NAV time for the second STA, on the basis of the NAV time information about the second STA.

METHOD AND DEVICE FOR REQUESTING PARTIAL INFORMATION FROM APS WITHIN TRANSMISSION MLD IN WIRELESS LAN SYSTEM

Proposed are a method and a device for requesting partial information from APs within a transmission MLD in a WLAN system. Particularly, a reception MLD transmits a probe request frame to a transmission MLD via a first link. The reception MLD receives a probe response frame from the transmission MLD via the first link. When the partial information regarding the first link and the partial information regarding the second link are the same, the partial information regarding the second link is requested on the basis of the first request element, and a value of a first full information profile sub-field is set to 0.

METHOD AND DEVICE FOR PERFORMING GROUPING FOR SENSING IN WIRELESS LAN SYSTEM

In a wireless local area network (wireless LAN) system, a transmitting STA can transmit, to a receiving STA, a grouping initiation frame for generating a group that is to perform sensing. The grouping initiation frame can include information related to a session identifier (ID) for a sensing session and to the number of transmission times of a sensing signal performed in the sensing session. The transmitting STA can receive a grouping response frame from the receiving STA. The receiving STA can be included in the group on the basis of the reception of the grouping response frame from the receiving STA within a threshold time preset from the transmission time of the grouping initiation frame. The sensing session can include at least one transmission opportunity (TXOP).

METHOD AND DEVICE FOR RECEIVING DATA IN WIRELESS LAN SYSTEM

Provided are a method and device for receiving data in a wireless LAN system. Particularly, an STA transmits an operating band negotiation request frame to an AP by means of a first band supported by first and second RFs. The STA receives an operating band negotiation response frame from the AP by means of the first band as a response to the operating band negotiation request frame. The STA changes the first band supported by the second RF into a second band on the basis of the operating band negotiation request frame and the operating band negotiation response frame. The STA receives first data from the AP by means of the first band supported by the first RF and the second band supported by the second RF. The first data is transmitted by means of a multi-band in which the first band and the second band are combined. 1. A method for receiving data in a wireless local area network (WLAN) system , the method comprising:transmitting, by a station (STA), an operating band negotiation request frame to an access point (AP) through a first band supported by first and second radio frequencies (RFs);receiving, by the STA, an operating band negotiation response frame from the AP through the first band in response to the operating band negotiation request frame;changing, by the STA, the first band supported by the second RF to a second band based on the operating band negotiation request frame and the operating band negotiation response frame; andreceiving, by the STA, first data from the AP through the first band supported by the first RF and the second band supported by the second RF,wherein the first data is transmitted through a multi-band into which the first band and the second band aggregated.2. The method of claim 1 , further comprising:transmitting, by the STA, an association request frame to the AP through the first band; andreceiving, by the STA, an association response frame from the AP through the first band in response to the association request frame,wherein the ...

TECHNIQUE FOR PERFORMING MULTI-LINK COMMUNICATION IN WIRELESS COMMUNICATION SYSTEM

According to various embodiments, a multi-link device including a first STA and a second STA may receive a first PPDU by means of the first STA. The PPDU may include information about traffic buffered in the second STA operating in a second link. In response to the first PPDU, the multi-link device may change the second STA from a doze state to an awake state, and transmit information about the state of the second STA by means of the second STA.

METHOD AND DEVICE FOR RECEIVING INFORMATION ON BEACON INTERVAL OF ANOTHER AP IN TRANSMISSION MLD IN WLAN SYSTEM

Proposed are a method and a device for receiving information on a beacon interval of another AP in a transmitting MLD in a WLAN system. Specifically, a receiving MLD receives an ML element from a transmitting MLD through a first link. The receiving MLD decodes the ML element. The transmitting MLD includes a first transmitting STA operating in the first link and a second transmitting STA operating in a second link. The ML element contains common information and link information. The link information includes information about a beacon interval of the second transmitting STA.

METHOD AND DEVICE FOR REQUESTING PARTIAL INFORMATION ON APS IN TRANSMISSION MLD IN WIRELESS LAN SYSTEM

Proposed are a method and a device for requesting partial information on APs in a transmission MLD in a WLAN system. Specifically, a receiving MLD transmits a probe request frame to a transmission MLD through a first link. The receiving MLD receives a probe response frame from the transmission MLD through the first link. The probe request frame includes a profile field of the second receiving STA. The profile field of the second receiving STA includes a first full information profile subfield. When the first receiving STA requests partial information on the second link, the value of the first full information profile subfield is set to 0, and the profile field of the second receiving STA further includes a first request element. The partial information on the second link is requested on the basis of the first request element.

LOAD INFORMATION FOR LOAD BALANCING IN MULTI-LINK

In a wireless local area network (WLAN) system, an access point (AP) multi-link device (MLD) may include a first AP and a second AP, the first AP may operate in a first link, and the second AP may operate in a second link. A station (STA) MLD may receive BSS information related to the first and second links, in which the AP MLD operates, from the AP MLD through the first link. The BSS information may include information related to the number of single radio STAs operating in the first link and the number of single radio STAs operating in the second link. The STA MLD may determine a link, in which the STA MLD is to operate, on the basis of the BSS information.

METHOD AND DEVICE FOR PERFORMING SENSING IN WIRELESS LAN SYSTEM

In a wireless local area network (wireless LAN) system, an initiator station (STA) can transmit a sensing initiation frame. The sensing initiation frame can include information related to a first responder STA operating as a sensing responder. The initiator STA can receive a first transmission initiation frame from the first responder STA. The first transmission initiation frame can include strength information about a first sensing signal. The initiator STA can receive the first sensing signal from the first responder STA. The sensing initiation frame can further include information related to a second responder STA operating as a sensing responder. The initiator STA can receive a second transmission initiation frame from the second responder STA. The second transmission initiation frame can include strength information about a second sensing signal. The second sensing signal can be received from the second responder STA.

TRANSMISSION OF BUFFER INFORMATION FOR MULTI-LINK OPERATION

An STA MLD can receive traffic indication map (TIM) information from an access point (AP) MLD in a wireless local area network (LAN) system. The TIM information can include a TIM bitmap and a link bitmap. The TIM bitmap includes a bitmap related to whether data to be transmitted by the AP MLD to each receiving MLD is present, and the receiving MLD can include the STA MLD. The link bitmap can include information related to a link of the receiving MLD, in which the data to be transmitted by the AP MLD is present, from among the receiving MLDs. The STA MLD can receive wake-up link information from the AP MLD. The wake-up link information can include information related to a link to be woken up from among links of the STA MLD.

REUSE OF SPACE IN MULTI-AP SYSTEM

A method performed by a sharing access point (AP) of a wireless local area network (LAN) system may comprise the steps of: transmitting, to a shared AP, a first station (STA) list and a first measurement notification frame which requests measurement of received signal strength indicators (RSSIs) of signals transmitted from first STAs included in the first STA list; transmitting, to each of the first STAs, a request frame which requests information related to transmission power of the signals transmitted by the first STAs; receiving a report frame including the information related to the transmission power from each of the first STAs; transmitting a multi-AP transmission trigger frame to the shared AP; and transmitting data to each of the first STAs.

METHOD AND APPARATUS FOR TRANSMITTING BSR INFORMATION FOR ANOTHER LINK ON BASIS OF A-CONTROL FIELD IN WIRELESS LAN SYSTEM

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.

METHOD AND DEVICE FOR TRANSMITTING DATA IN WIRELESS LAN SYSTEM

A method and device for transmitting data in a wireless LAN system are provided. Particularly, a transmission device receives configuration information relating to a multi-band. The transmission device performs channel sensing with respect to the multi-band. The transmission device transmits data to a reception device via the multi-band on the basis of the result of the channel sensing. A first band and a second band are combined in the multi-band. The first band comprises a first primary channel, and the second band comprises a second primary channel. The result of the channel sensing is obtained on the basis of whether or not the first primary channel is idle until a first BC value becomes 0 and whether or not the second primary channel is idle until a second BC value becomes 0. The first BC value is selected within a first CW configured with respect to the first primary channel. The second BC value is selected within a second CW configured with respect to the second primary channel.

ENHANCED NDPA FRAME FOR SENSING

The present specification proposes NDPA frame formats supported in a next generation wireless LAN system. According to one embodiment of the present specification, the NDPA frame formats may include common information for sensing. Here, the common information may be included in a special user information field. According to another embodiment of the present specification, the NDPA frame formats may use an existing NDPA frame format.

DATA SHARING IN MULTI-AP SYSTEM

In a wireless local area network system, a shared AP may receive an announcement frame and a data frame from a sharing AP for multi-AP transmission. In the present disclosure, the announcement frame may be transmitted in a broadcasting scheme. The data field of the announcement frame may include an identifier (ID) of the shared AP. The shared AP may receive a data frame from the sharing AP. In the present disclosure, a receiver address (RA) field of the data frame may include an address of the sharing AP. The shared AP may decode the data frame based on the address of the sharing AP included in the RA field of the data frame.

SHARED AP SELECTION IN MULTI-AP SYSTEM

In a wireless local area network (LAN) system, a sharing access point (AP): receives, from a first AP, basic service set (BSS) information of the first AP; receives, from a second AP, BSS information of the second AP; receives, from a station (STA), a link report signal including link quality information about the link between the first AP and the STA and link quality information about the link between the second AP and the STA; and selects the first AP as a shared AP on the basis of first and second capability information and the link quality information.

METHOD AND APPARATUS FOR RECEIVING MAC ADDRESS OF ANOTHER STA WITHIN RECEPTION MLD IN WIRELESS LAN SYSTEM

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.

DYNAMIC CONFIGURATION OF MULTI-LINK FUNCTION IN WIRELESS LAN SYSTEM

In a wireless local area network (LAN) system, a transmission MLD may comprise a first station (STA) and a second station (STA), wherein the first STA operates in a first link, and the second STA operates in a second link. The transmission MLD may transmit a connection request frame to a reception MLD. The connection request frame may comprise capability information related to whether a restricted basic service set (BSS) mode is supported and information related to use of the restricted BSS mode. The information related to the use of the restricted BSS mode may comprise first information related to an STA which operates in the restricted BSS mode, among STAs included in the transmission MLD. The restricted BSS mode may mean a mode in which monitoring for signal reception is performed on the basis of acquisition of information, from an STA not operating in the restricted BSS mode, by the STA operating in the restricted BSS, the information indicating reception of a signal. The transmission MLD may receive a connection response frame from the reception MLD.

SENSING PROCEDURE

According to the present specification, when a non-AP STA initiates a sensing procedure such as a sensing measurement, an STA, such as an AP, which receives an initiation request of the non-AP STA, may execute a sensing procedure such as a sensing measurement, and transmit the sensing execution result to the non-AP STA.

TECHNIQUE FOR PERFORMING MULTI-LINK COMMUNICATION IN WIRELESS COMMUNICATION SYSTEM

According to various embodiments, a multi-link device (MLD) operating in a plurality of links can receive a PPDU through a first link from among the plurality of links. The PPU can include a first information field related to a second link that is differentiated from the first link. The first information field related to a second link can include a second information field related to a link identifier of a second link and a third information field related to whether all pieces of element information related to a second link is included in the PPDU.

TECHNIQUE FOR TRANSMITTING INFORMATION ON MIDAMBLE IN WIRELESS COMMUNICATION SYSTEM

One embodiment according to the present specification relates to a technique for transmitting information on a midamble in a wireless LAN (WLAN) system. A transmitting STA may generate a NGV PPDU. The NGV PPDU may include a preamble, a data field and a midamble. The preamble may include information on the midamble. For example, the information on the midamble may include information on the configuration and period of the midamble.

TECHNIQUES FOR PERFORMING MULTI-LINK COMMUNICATION IN WIRELESS LOCAL AREA NETWORK SYSTEM

According to various embodiments, a multi-link device (MLD) operating in a first link and a second link may transmit information on data buffered in the MLD through a first station (STA) operating in an awake state. The information on the data buffered in the MLD may include a first information field related to the first STA and a second information field related to a second STA. 1. A method performed in a multi-link device (MLD) operating in a first link and second link of a wireless local area network (WLAN) system , the method comprising:identifying data buffered in the MLD;identifying a first station (STA) operating in an awake state out of the first STA related to the first link and a second STA related to the second link, which are included in the MLD; andtransmitting information on the data buffered in the MLD through the first STA,wherein the information on the data buffered in the MLD includes a first information field related to the first STA and a second information field related to the second STA,wherein the first information field includes an identifier (ID) for the first link and information on a queue buffered in the first STA, andwherein the second information field includes an ID for the second link and information on a queue buffered in the second STA.2. The method of claim 1 , further comprising receiving a frame which requests for the information on the data buffered in the MLD.3. The method of claim 1 , wherein the MLD operates in a power save (PS) mode.4. The method of claim 3 , wherein the second STA operates in a doze state.5. The method of claim 1 , wherein the information on the data buffered in the MLD is transmitted through a buffer status report (BSR) frame.6. The method of claim 5 , wherein the information on the queue buffered in the first STA includes information on an access category indicator (ACI) claim 5 , information on a data traffic identifier (TID) claim 5 , information on a scaling factor claim 5 , and information on a queue ...

GROUPING OF WIRELESS APPARATUS PERFORMING SENSING

The present specification proposes various technical features applicable to WLAN sensing. For example, the present specification proposes a procedure for grouping wireless devices performing WLAN sensing. Wireless devices performing WLAN sensing may be grouped based on a channel and/or the type and properties of a wireless device. Further, the present specification proposes a signal transmission/reception procedure for grouped wireless devices to perform WLAN sensing. Specifically, the present specification proposes a WLAN sensing-related signal transmission/reception operation method in view of a channel and/or the type and properties of a wireless device.

METHOD FOR REQUESTING INFORMATION ON RESTRICTED TWT IN WIRELESS LAN SYSTEM AND DEVICE USING SAME METHOD

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.

PUNCTURING-BASED 240 MHZ TRANSMISSION

In a wireless local area network (WLAN) system, a transmission STA can transmit a PPDU via a 320 MHz channel, and a Medium Access Control (MAC) signal may be generated for the PPDU. The MAC signal may include puncturing pattern information and channel center frequency segment (CCFS) information for a 320 MHz band. The CCFS information may include a first CCFS field related to channel center frequency (CCF) information of a primary 160 MHz channel, and a second CCFS field related to CCF information of a 320 MHz channel.

CHANNEL ACCESS IN MULTI-LINK

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).

METHOD AND DEVICE FOR TRANSMITTING UPDATED INFORMATION FOR ML RECONFIGURATION IN WIRELESS LAN SYSTEM

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.

METHOD AND DEVICE FOR TRANSMITTING DATA IN WIRELESS LAN SYSTEM

Proposed are a method and a device for transmitting data in a wireless LAN system. Specifically, a transmission device receives configuration information of a multi-band formed by aggregating first to third bands. The transmission device carries out channel sensing on the first to third bands. The transmission device transmits data to a receiving device on the basis of the result of the channel sensing. The first band comprises a first primary channel and a first secondary channel; the second band comprises a second primary channel and a second secondary channel; and the third band comprises a third primary channel and a third secondary channel. 1. A method of transmitting data in a wireless local area network (WLAN) system , the method comprising:receiving, by a transmitting device, setup information on a multi-band in which first to third bands are aggregated;performing, by the transmitting device, channel sensing on the first band to the third band; andtransmitting, by the transmitting device, the data to a receiving device, based on a result of the channel sensing,wherein the first band includes a first primary channel and a first secondary channel,wherein the second band includes a second primary channel and a second secondary channel,wherein the third band includes a third primary channel and a third secondary channel,wherein, if the first primary channel is busy and a first backoff count (BC) value is not 0, the first BC value is maintained,wherein, if the second primary channel is idle and a second BC value is not 0, the second BC value is set to 0, and the channel sensing is performed on the second secondary channel, andwherein, if the third primary channel is idle and a third BC value is 0, the channel sensing is performed on the third secondary channel.2. The method of claim 1 , wherein claim 1 , if the secondary channel is idle and the third secondary channel is idle claim 1 , the data is transmitted through the second and third primary channels and the ...

METHOD FOR IDENTIFYING FORMAT OF PPDU IN WIRELESS COMMUNICATION SYSTEM

One example according to the present specification relates to a method for identifying the format of a PPDU in a wireless LAN (WLAN) system. A receiving STA may receive a first PPDU. The receiving STA may check at least one extra tone of at least one symbol of the first PPDU. The receiving STA may determine, on the basis of the at least one extra tone, the format of the first PPDU as a repeated PPDU format. Thereafter, the receiving STA may receive a second PPDU including the same data as the first PPDU. 1. A method in a wireless local area network system , the method comprising:receiving, by a receiving STA from a transmitting STA, a first Physical Protocol Data Unit (PPDU), wherein at least one symbol of the first PPDU includes at least one extra tone;determining, by the receiving STA, the format of the first PPDU as a repeated PPDU format based on the at least one extra tone; andreceiving, by the receiving STA from the transmitting STA, a second PPDU including the same data as the first PPDU based on the format of the first PPDU, wherein the first PPDU and the second PPDU are received through a 5.9 GHz band based on a frequency spacing of 156.25 kHz.2. The method of claim 1 , wherein a subcarrier index of the at least one extra tone is set to [−27 claim 1 , 27].3. The method of claim 1 , wherein a subcarrier index of the at least one extra tone is set to [−28 claim 1 , −27 claim 1 , 27 claim 1 , 28].4. The method of claim 1 , wherein the at least one extra tone is set to one of a first value and a second value.5. The method of claim 1 , wherein the method further comprises claim 1 ,checking, by the receiving STA, whether average power of the at least one extra tone exceeds a specified value.6. The method of claim 1 , wherein the method further comprises claim 1 ,checking, by the receiving STA, whether the at least one extra tone is set to a specified sequence.7. The method of claim 1 , wherein the method further comprises claim 1 ,determining, by the receiving ...

METHOD AND DEVICE FOR TRANSMITTING AND RECEIVING IMPORTANT UPDATE INFORMATION OF ANOTHER AP THROUGH ML ELEMENT IN WLAN SYSTEM

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.

SIGNALING FOR MULTI-LINK TRANSMISSION

In a wireless local area network system, a multi-link device (MLD) may transmit a multi-link element including a number-of-links field and a link present field indicating whether the number-of-links field exists. The multi-link element further includes a multi-link control field, a common information field, and a link information field. The number-of-links field may be included in the multi-link control field.

Method and apparatus for transmitting ppdu on basis of s-tdma in wireless lan system

A method and an apparatus for transmitting a PPDU on the basis of an S-TDMA in a wireless LAN system are presented. Particularly, an AP transmits a trigger frame to a first STA and a second STA. The AP receives, on the basis of the trigger frame, a first trigger-based frame from the first STA and a second trigger-based frame from the second STA. The trigger frame includes a common information field and a user information field. The common information field includes S-TDMA indication information enabling the S-TDMA to be performed. The user information field includes: allocation information on a first RU to which the first trigger-based frame and the second trigger-based frame are transmitted; first symbol offset information on the first trigger-based frame; and second symbol offset information on the second trigger-based frame.

Channel estimation using multiple ap

In a wireless local area network system, a sharing access point (AP) may determine a long training field (LTF) subcarrier pattern for each of multiple streams, wherein an LTF symbol is used for at least one stream among a first to a third stream, the number of the LTF symbols is determined on the basis of the number of antennas of a shared AP having the maximum number of antennas among multiple shared APs associated with the sharing AP, and the first to the third stream are assigned different subcarrier patterns. The sharing AP may transmit information associated with the LTF subcarrier pattern.

METHOD AND DEVICE FOR PERFORMING CHANNEL ESTIMATION BY ADDING MIDAMBLE TO NGV FRAME IN WIRELESS LAN SYSTEM

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. 1. A method in a wireless local area network (WLAN) system , the method comprising:generating, by a transmitting device, a New Generation Vehicular (NGV) frame; andtransmitting, by the transmitting device, the NGV frame to a receiving device through a first band,wherein the NGV frame includes a Legacy-Short Training Field (L-STF), a Legacy-Long Training Field (L-LTF), a Legacy-Signal (L-SIG), a Repeated Legacy (RL)-SIG, an NGV-SIG, an NGV-STF, an NGV-LTF, and an NGV-Data,wherein the NGV-Data includes at least one midamble,wherein the at least one midamble is generated based on a sequence of the NGV-LTF, andwherein the sequence of the NGV-LTF is mapped to tones in units of two tones in a frequency domain.2. The method of claim 1 , wherein the at least one midamble is used for performing additional channel estimation based on a Doppler effect.3. The method of claim 1 , wherein claim 1 , when the at least one midamble is configured of one OFDM symbol claim 1 , the at least one midamble is generated based on one time-sequence of two time-sequences that are configured in the time domain of the NGV-LTF sequence claim 1 , andwherein a symbol length of the at least one midamble is equal to 4 us.4. The method of claim 1 , wherein claim 1 , when the at least one midamble is configured of one OFDM symbol claim 1 , the at least ...

METHOD AND APPARATUS FOR TRANSMITTING PPDU IN WLAN SYSTEM

A method and an apparatus for transmitting a PPDU in a WLAN system are proposed. Particularly, a transmission device receives configuration information relating to a multi-band. The transmission device performs channel sensing with respect to the multi-band. The transmission device transmits PPDUs to a reception device via the multi-band on the basis of the result of the channel sensing. In the multi-hand, a first band and a second band are combined. The first band includes a first primary channel. The second band includes a second primary channel. The channel sensing is performed on the basis of a first CW value which is set in common for the first and second bands. If transmission of some PPDUs allocated to the second band of the PPDUs fails, the first CW value is increased. 1. A method for transmitting a physical protocol data unit (PPDU) in a wireless local area network (WLAN) system , the method comprising:receiving, by a transmission device, configuration information about a multi-band;performing, by the transmission device, channel sensing on the multi-band; andtransmitting, by the transmission device, a PPDU to a reception device through the multi-band based on a result of the channel sensing,wherein the multi-band comprises a first band and a second band which are aggregated,the first band comprises a first primary channel,the second band comprises a second primary channel,the channel sensing is performed based on a first contention window (CW) value commonly set for the first band and the second band, andthe first CW value is increased when transmission of part of the PPDU allocated to the second band fails.2. The method of claim 1 , wherein the channel sensing is performed on the first primary channel based on a first backoff count (BC) value selected from the first CW value claim 1 ,the channel sensing is performed on the second primary channel based on a second BC value selected from the first CW value, andthe PPDU is transmitted through the first ...

RESUMPTION OF PHY-LEVEL HARQ OPERATION

The present specification proposes a method for resuming a PHY-level HARQ operation in a wireless local area network (WLAN) system. The method may include transmitting a resume signal including information related to resumption of hybrid automatic repeat request (HARQ) retransmission. The method may include transmitting a physical protocol data unit (PPDU) after transmitting the resume signal. The PPDU and the resume signal may be transmitted in different transmission opportunities (TXOPs). 1. A method in a wireless local area network system , the method comprising:transmitting, by a transmitting station (STA) to a receiving STA, a resume signal including information related to resumption of hybrid automatic repeat request (HARQ) retransmission;transmitting, by the transmitting STA to the receiving STA, a physical protocol data unit (PPDU) in a first transmission opportunity (TXOP); andreceiving, by the transmitting STA from the receiving STA, a feedback frame for the PPDU,wherein the feedback frame is a physical (PHY) layer signal.2. The method of claim 1 , wherein the resume signal is transmitted in a second TXOP.3. The method of claim 1 , wherein the resume signal is included in a retransmission PPDU based on the feedback frame claim 1 ,wherein the resume signal is a PHY layer signal.4. The method of claim 3 ,wherein the retransmission PPDU is transmitted in the first TXOP,wherein the resume signal includes information that HARQ retransmission is resumed in the second TXOP.5. The method of claim 1 , wherein the information related to the retransmission resumption includes information that a same PPDU as the PPDU is retransmitted in the second TXOP.6. The method of claim 1 ,wherein the information related to the retransmission resumption includes information that a media access control (MAC) protocol data unit (MPDU) that has failed to transmit is retransmitted in the second TXOP based on a block acknowledgment (BA) frame,wherein the method further comprises ...

PUNCTURING-BASED 240 MHZ TRANSMISSION

In a wireless local area network (WLAN) system, a transmission STA can transmit a PPDU via a 320 MHz channel, and a Medium Access Control (MAC) signal may be generated for the PPDU. The MAC signal may include puncturing pattern information and channel center frequency segment (CCFS) information for a 320 MHz band. The CCFS information may include a first CCFS field related to channel center frequency (CCF) information of a primary 160 MHz channel, and a second CCFS field related to CCF information of a 320 MHz channel. 1. A method performed by a transmitting device in a wireless local area network (LAN) system , the method comprising:generating a Medium Access Control (MAC) signal including channel center frequency segment (CCFS) information and puncturing information to be used for a 320 MHz physical protocol data unit (PPDU),wherein the CCFS information includes a first CCFS field related to channel center frequency (CCF) information of a primary 160 MHz channel, and a second CCFS field related to CCF information of a 320 MHz channel,wherein a difference between a value of the second CCFS field and a value of the first CCFS field is set to sixteen (16),wherein the puncturing information includes bitmap information related to at least one subchannel to be punctured within the 320 MHz PPDU; andtransmitting the MAC signal to a receiving device.216-. (canceled)17. The method of claim 1 , further comprising:generating the 320 MHz PPDU based on the MAC signal; andtransmitting the 320 MHz PPDU to the receiving device.18. The method of claim 1 , wherein the 320 MHz PPDU is an extremely high throughput (EHT) PPDU.19. The method of claim 1 , wherein the 320 MHz PPDU is transmitted through the 320 MHz channel including the primary 160 MHz channel.20. The method of claim 1 , wherein the MAC signal further includes a channel width field related to a bandwidth of the 320 MHz PPDU.21. The method of claim 1 , wherein the transmitting device supports a multi-link communication ...

HARQ OPERATIONS AT PHY LAYER LEVEL

An AP and a STA can perform a PHY-level HARQ operation in a wireless local area network system, and the AP can transmit resource allocation information about a PHY-level feedback frame to be transmitted by a plurality of STAs. The AP can receive a plurality of HARQ feedback frames from a plurality of STAs. The plurality of HARQ feedback frames are PHY layer signals. The resource allocation information can include information related to a tone set and a symbol from which transmission of the plurality of HARQ feedback frames are started. 1. A method performed by an access point (AP) in a wireless local area network system , the method comprising:transmitting a hybrid automatic repeat request (HARQ) physical protocol data unit (PPDU) to multiple stations (STAs) including a first STA and a second STA,wherein the HARQ PPDU includes a data field and resource allocation information related to resources in which a first and a second HARQ feedback frames are transmitted; andreceiving the first HARQ feedback frame for the PPDU from the first STA, and receiving the second HARQ feedback frame for the PPDU from the second STA,wherein the first and second HARQ feedback frames are PHY layer signals, andwherein the resource allocation information includes information related to a tone set and a symbol from which transmission of the first and second feedback frames are started.2. The method of claim 1 ,wherein the resource allocation information further includes information related to a tone set and a symbol at which transmission of the first and second feedback frames ends.3. The method of claim 1 ,wherein the first HARQ feedback frame includes a first ACK group,wherein the second HARQ feedback frame includes a second ACK group,wherein the first and second ACK groups include acknowledgment (ACK) for at least one HARQ unit,wherein ACK for one HARQ unit is mapped to one tone set, andwherein the tone set includes a plurality of pre-configured tones.4. The method of claim 3 ,wherein ...

TECHNIQUE FOR PERFORMING MULTILINK COMMUNICATION IN WIRELESS COMMUNICATION SYSTEM

According to various embodiments, a multi-link device (MLD) including a first STA and a second STA can receive a DL PPDU through a first link. The multi-link device can set the state of the second STA to be a doze state during the duration of the DL PPDU. The multi-link device can transmit an ACK frame through the first link in response to the DL PPDU. The multilink device can set the state of the second STA to be an awake state during the duration of the ACK frame. 1. A method performed by a multi-link device (MLD) including a first STA and a second STA in a wireless local area network system , the method comprising:receiving, through the first STA related to a first link among a multi-link, a Down-Link Physical Layer Protocol Data Unit (DL PPDU) from an Access Point (AP);configuring a state of the second STA related to a second link among the multi-link to a doze state during a duration of the DL PPDU;transmitting, through the first STA, an acknowledgment (ACK) frame to the AP in response to the DL PPDU; andconfiguring the state of the second STA to an awake state during a duration of the ACK frame.2. The method of claim 1 ,wherein the DL PPDU includes information on data buffered in the second link.3. The method of claim 2 , wherein the method further comprising:determining the state of the second STA based on the DL PPDU.4. The method of claim 1 , wherein the method further comprising:transmitting, through the second STA, an Up-Link Physical Layer Protocol Data Unit (UL PPDU) during the duration of the ACK frame.5. The method of claim 1 ,wherein the DL PPDU is received within a transmission opportunity (TXOP) of the first link, andwherein the ACK frame is transmitted within the TXOP of the first link.6. The method of claim 1 ,wherein the ACK frame includes a Block ACK frame.7. The method of claim 1 , wherein the step of configuring the state of the second STA to the doze state during the duration of the DL PPDU comprising:checking at least one of information on ...

Multi-link channel access

In a wireless local area network (WLAN) system, in a case where data is being transmitted through a link, a transmission multi-link device (MLD) may perform back-off through another link during a time interval in which a PPDU is not transmitted through the link for the data transmission. Further, the transmission MLD may perform back-off again if a TXOP of the link for the data transmission is not over when a BC becomes 0.

Method and apparatus for filtering ppdu in wireless communication system

An example according to the present specification relates to a technique for filtering a PPDU in a wireless LAN (WLAN) system. An STA may receive an NGV PPDU including a first control field and a second control field. The STA may filter the NGV PPDU on the basis of the second control field and may defer channel access on the basis of the first control field.

Method and device for configuring ngv frame for wideband transmission in wireless lan system

A method and device for transmitting an NGV frame in a wireless LAN system is proposed. Specifically, a transmission device generates an NGV frame and transmits the NGV frame through a first band. The NGV frame includes an L-STF, an L-LTF, an L-SIG, an NGV-SIG, an NGV-STF, an NGV-LTF, and NGV-Data. The L-STF, the L-LTF, the L-SIG, and the NGV-SIG are duplicated in units of second bands and transmitted through the first band. The NGV-STF, the NGV-LTF, and the NGV-Data are transmitted through a full band of the first band. The first band is a 20 MHz band, and a second band is a 10 MHz band.

Technique for transmitting midamble in wireless communication system

One embodiment according to the present specification relates to a technique for transmitting a midamble in a wireless LAN (WLAN) system. A transmitting STA may configure an NGV PPDU. The NGV PPDU may include a preamble, a data field, and a midamble. The preamble may include an NGV signal field. The NGV signal field may include information on a transmission period of the midamble.

Link deactivation in multi-link

In a Wireless Local Area Network system, a reception device can receive information about link deactivation, and deactivate a link. The proposed method includes receiving a physical protocol data unit (PPDU) including a first control field in a first link. In the method, the first control field may include information related to disablement of the first link and information on a time point at which the first link is disabled. The proposed method further includes disabling the first link based on the first control field.

Channel switching for c-ofdma transmission in multi-ap system

The present disclosure is related to a sharing access point (AP) and a shared AP in a wireless Local Area Network (LAN). A method performed by the sharing AP may comprise the steps of: allocating a first channel to first and second stations (STAs), wherein the shared AP is associated with the first and second STAs; receiving, from a sharing AP, an allocation of a second channel for transmission of coordinated orthogonal frequency division multiplexing access (C-OFDMA); and transmitting a channel switching signal that requests channel switching from the first channel to the second channel, wherein the channel switching signal is only transmitted to the first STA participating in the C-OFDMA, but not to the second STA not participating in the C-OFDMA.

Method and device for performing grouping for sensing in wireless lan system

In a wireless local area network (wireless LAN) system, a transmitting STA can transmit, to a receiving STA, a grouping initiation frame for generating a group that is to perform sensing. The grouping initiation frame can include information related to a session identifier (ID) for a sensing session and to the number of transmission times of a sensing signal performed in the sensing session. The transmitting STA can receive a grouping response frame from the receiving STA. The receiving STA can be included in the group on the basis of the reception of the grouping response frame from the receiving STA within a threshold time preset from the transmission time of the grouping initiation frame. The sensing session can include at least one transmission opportunity (TXOP).

Method and device for configuring NGV frame for wideband transmission in wireless LAN system

A method and device for transmitting an NGV frame in a wireless LAN system is proposed. Specifically, a transmission device generates an NGV frame and transmits the NGV frame through a first band. The NGV frame includes an L-STF, an L-LTF, an L-SIG, an NGV-SIG, an NGV-STF, an NGV-LTF, and NGV-Data. The L-STF, the L-LTF, the L-SIG, and the NGV-SIG are duplicated in units of second bands and transmitted through the first band. The NGV-STF, the NGV-LTF, and the NGV-Data are transmitted through a full band of the first band. The first band is a 20 MHz band, and a second band is a 10 MHz band.

Method and device for signaling ersp in wireless lan system

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.

Method and device for controlling plurality of links in wireless local area network system supporting plurality of links

According to various embodiments, a method performed in a wireless local area network (WLAN) system may comprise the steps of: receiving, by a first station (STA) supporting a first and a second link, a physical protocol data unit (PPDU) generated for a second STA, via the first link, the PPDU being received from a BSS to which the first STA belongs; setting, by the first STA, a first type NAV for the first link on the basis of the PPDU; and setting, by the first STA, a first type NAV for the second link on the basis of the PPDU.

Capability negotiation in multilink

Improved operation for constrained twt

The present specification proposes an improved recommendation for TWT operation supported in a next-generation wireless LAN system. According to one embodiment of the present specification, an improved recommendation for constrained TWT operation is defined. According to another embodiment of the present specification, whether an STA performs an NAV protection mechanism can be determined according to the value of a broadcast TWT proposal subfield.

Method for requesting information on restricted twt in wireless lan system and device using same method

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.

Technique for transmitting ltf signal in wireless communication system

Improved sensing procedure

According to the present specification, when a non-AP STA initiates a sensing procedure such as a sensing measurement, an STA, such as an AP, which receives an initiation request of the non-AP STA, may execute a sensing procedure such as a sensing measurement, and transmit the sensing execution result to the non-AP STA.

Method and device for identifying packet in wireless communication system

An example according to the present specification relates to a technique for identifying a wireless LAN (WLAN) packet. An NGV PPDU may include a first legacy control field and a second legacy control field. The second legacy control field may be used to identify a type of a PPDU. The first legacy control field may be received through a first symbol, and the second legacy control field may be received through a second symbol. The first legacy control field and the second legacy control field may include identical bit information.

Method and device for requesting and receiving information about other ap corresponding to nontransmitted bssid set in wireless lan system

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.

Ack transmission using multilink

In a wireless local area network system, a receiving device may receive a Block Acknowledgment Request (BAR) frame including information related to a link for which an ACK is requested, and transmit a Block ACK (BA) frame on the basis of the BAR frame. The receiving device is a Multi-Link Device (MLD), which supports communication over multiple links. Each link of the multiple links can be configured based on 2.4 GHz band, 5 GHz band, and/or 6 GHz band defined in a conventional wireless local area network system.

Channel access in multi-link

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).

Technique for controlling plurality of wireless communication links

One embodiment according to the present specification relates to a method for transmitting, from a first link, information for setting a NAV in a second link. When transmission STA performs communication through a second link, the transmission STA can transmit, through a first link, information for setting the NAV for the second link in another STA. Particularly, the transmission STA can receive, from the second reception STA, a second frame through the second link. The transmission STA can transmit, to a first reception STA, a first frame through the first link during the reception of the second frame. The first frame can include information for setting the NAV for the second link. The first reception STA can set the NAV for the second link on the basis of the first frame.

Multi-link operation mode

In a wireless local area network (WLAN) system, a station (STA) may support a multi-link. The STA may generate a PDDU including operation mode information on whether transmission of a signal and reception of a signal can be performed simultaneously. The STA may transmit the PPDU.

Method and device for transmitting updated information for ml reconfiguration in wireless lan system

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.

Dynamic configuration of multilink function in wireless lan system

In a wireless local area network (LAN) system, a station (STA) can receive, from an access point (AP), a physical protocol data unit (PPDU) including basic service set (BSS) load information. The BSS load information can include information related to the number of STAs associated with a BSS of the AP and the number of enabled STAs from among the STAs associated with the BSS of the AP. The STAs can decode the PPDU. The STAs associated with the BSS of the AP can include enabled STAs and disabled STAs. The disabled STAs can include STAs operating in links to which no traffic identifier (TID) is mapped. Links in which the enabled STAs operate can include links to which at least one traffic identifier (TID) is mapped.

Method and device for requesting information on another ap in transmission mld by using action frame in wireless lan system

Proposed are a method and a device for requesting information on another AP in a transmission MLD by using an action frame in a wireless LAN system. Specifically, a reception MLD transmits a first action frame to a transmission MLD via a first link. The reception MLD receives a second action frame from the transmission MLD via the first link. The transmission MLD includes a first transmission STA operating in the first link and a second transmission STA operating in a second link. The reception MLD includes a first reception STA operating in the first link. The first action frame includes a first category field, a first MLD action field, and a first ML element field. The first category field indicates that the first action frame corresponds to a frame for an MLD. The first MLD action field indicates that the first action frame corresponds to a frame for requesting MLD information.

Enhanced ndpa frame for sensing

The present specification proposes NDPA frame formats supported in a next generation wireless LAN system. According to one embodiment of the present specification, the NDPA frame formats may include common information for sensing. Here, the common information may be included in a special user information field. According to another embodiment of the present specification, the NDPA frame formats may use an existing NDPA frame format.

WLAN sensing based on multiple channel or resource

The present specification proposes various technical characteristics that may be applied to a Wireless Local Area Network (WLAN) sensing. For example, the present specification proposes a procedure for WLAN sensing using multiple channels or multiple resources. The same or different channels and/or resources may be allocated to at least one wireless device performing the WLAN sensing. The at least one wireless device may perform measurement and signal transmission/reception processes that are included in the WLAN sensing by using the channel(s) and/or resource(s).

Technique for forming midamble in wireless communication system

One example according to the present specification relates to a technique for forming a midamble in a wireless LAN (WLAN) system. A reception STA may receive an NGV PPDU. The NGV PPDU may include a preamble, a data field, and a midamble. The midamble format may be determined as either a first format or a second format. A midamble symbol of the first format may include an LTF signal and a GI pertaining to the LTF signal.

Method and device for transmitting and receiving significant update information regarding specific ap via management frame in wireless lan system

Proposed are a method and device for receiving significant update information regarding a specific AP via a management frame in a WLAN system. Particularly, 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.

Link setup for multilink operation

Method and device for transceiving frame in wireless LAN system

Provided is a method and device for transceiving a frame in a wireless Local Area Network (LAN) system. Particularly, an Access Point (AP) transmits a first frame to a first station (STA) via a first band. The AP receives a second frame from a second STA via a second band while the first frame is being transmitted. The first band and the second band are combined with each other as a multi-band. The multi-band simultaneously supports a Downlink (DL) transmission and a Uplink (UL) transmission. The relationship between the first STA and the second STA is a hidden node. A Physical (PHY) header of the first frame includes channel status information of the second band. A Network Allocation Vector (NAV) of the first STA is set up on the basis of the channel status information.

Improved wireless lan sensing procedure

The present specification proposes a new procedure of signal transmission or reception between STAs in a case of sensing measurement initiated by an STA rather than an AP. According to an embodiment of the present specification, proposed is a sensing measurement procedure performed by an AP in response to transmission of a sensing initiation frame to the AP by an STA rather than the AP. According to another embodiment of the present specification, according to an embodiment of the present specification, proposed is a procedure in which an STA rather than an AP transmits a sensing initiation frame to the AP, and then the AP requests respondent STAs to transmit NDP frames. According to yet another embodiment of the present specification, proposed is a method for configuring a frame transmitted or received in the above procedures.

Method and apparatus for performing sensing in wireless lan system

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.

Improved sensing procedure

According to the present specification, when a non-AP STA initiates a sensing procedure such as a sensing measurement, an STA, such as an AP, which receives an initiation request of the non-AP STA, may execute a sensing procedure such as a sensing measurement, and transmit the sensing execution result to the non-AP STA.

Multi-link setup in wireless communication system

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.

Method and apparatus for receiving mac address of another sta within reception mld in wireless lan system

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 transmission MLD comprises a first transmission STA operating in the 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 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.

Method and device for obtaining critical update information between mlds in wireless lan system

Proposed are a method and a device for obtaining critical update information between MLDs in a wireless LAN system. Specifically, a reception MLD transmits a probe request frame to a transmission MLD through a first link. The reception MLD receives a probe response frame from the transmission MLD through the first link. The transmission MLD comprises a first transmission STA operating in the first link and a second transmission STA operating in a second link. The probe request frame comprises a change sequence element which requests critical update information of the second transmission STA. The probe response frame comprises the critical update information of the second transmission STA.

Method and apparatus for requesting complete information or partial information on APs in transmission MLD in wireless LAN system

Provided are a method and apparatus for requesting complete information or partial information on access points (APs) in a transmitting multi-link device (MLD) in a wireless local area network (WLAN) system. Specifically, a receiving MLD transmits a probe request frame to the 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 includes a first transmitting station (STA) operating in the first link and a second transmitting STA operating in a second link. The receiving MLD includes a first receiving STA operating in the first link and a second receiving STA operating in the second link. The probe request frame includes a profile field of the second receiving STA.

Multi-link channel access

In a wireless local area network (WLAN) system, a transmitting multi-link device (MLD) may defer the transmission of a PPDU on a first link, even if a back-off counter of a non-primary link reaches zero, as long as a back-off counter of a primary link does not reach zero. When the transmission of the PPDU is deferred, the back-off counter may be kept at zero.

Mapping of tid and link in multi-link

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.

Channel access in multi-link

Method and apparatus for transferring information requested by non-ap sta for p2p transmission to ap in wireless lan system

Proposed are a method and an apparatus for transferring information requested by a non-AP STA for P2P transmission to an AP in a wireless LAN system. Specifically, a first receiving STA receives a QoS data frame or a QoS null frame from a transmitting STA. The first receiving STA receives a MU-RTS TXS frame from the transmitting STA. The first receiving STA transmits data to a second receiving STA on the basis of the MU-RTS TXS frame. The QoS data frame or the QoS null frame includes a TXS control frame. The TXS control frame includes first information on a time required for transmission of the data and second information on a bandwidth required for the transmission of the data. The MU-RTS TXS frame includes third information on a time allocated for transmitting the data and fourth information on a bandwidth allocated for transmitting the data.

Method and device for transmitting updated information for ML reconfiguration in wireless LAN system

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.

Technique for transmitting information related to packet extension field in wireless communication system

Puncturing-based 240 MHz transmission

In a wireless local area network (WLAN) system, a transmission STA can transmit a PPDU via a 320 MHz channel, and a Medium Access Control (MAC) signal may be generated for the PPDU. The MAC signal may include puncturing pattern information and channel center frequency segment (CCFS) information for a 320 MHz band. The CCFS information may include a first CCFS field related to channel center frequency (CCF) information of a primary 160 MHz channel, and a second CCFS field related to CCF information of a 320 MHz channel.

Method and apparatus for receiving mac address of another sta within reception mld in wireless lan system

Technique for performing multi-link communication in wireless communication system

Technique for transmitting information on midamble in wireless communication system

One embodiment according to the present specification relates to a technique for transmitting information on a midamble in a wireless LAN (WLAN) system. A transmitting STA may generate a NGV PPDU. The NGV PPDU may include a preamble, a data field and a midamble. The preamble may include information on the midamble. For example, the information on the midamble may include information on the configuration and period of the midamble.

Technique for transmitting information on midamble in wireless communication system

Method and device for configuring spatial reuse field in wireless lan system

Proposed are a method and a device for configuring a spatial reuse field in a wireless LAN system. Specifically, a reception STA receives a trigger frame from a transmission STA. The reception STA transmits a TB PPDU to the transmission STA through a pre-configured frequency band. The trigger frame comprises a common information field and a special user information field. The common information field comprises first to fourth spatial reuse fields. The special user information field comprises fifth and sixth spatial reuse fields. When the pre-configured frequency band is a 20 MHz band, the first to fourth spatial reuse fields are configured by the value of the fifth spatial reuse field.