Lg Electronics Inc.

Insun Jang

Jinsoo Choi

Jeongki Kim

Taewon Song

Namyeong Kim

Suhwook Kim

Sungjin Park

Dongguk Lim

Eunsung Park

Sunhee Baek

Kiseon Ryu

Sanggook Kim

Jiin Kim

Jinmin Kim

Jinyoung Chun

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.

Acquisition of important information in power-saving mode

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.

Method and apparatus for signaling RSP on basis of TWT information frame 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.

Dynamic configuration of multilink function in wireless LAN system

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.

Method for requesting information on restricted TWT in wireless LAN system and device using same method

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.

Puncturing-based 240 MHz transmission

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.

Method and device for receiving data in wireless LAN system

In a wireless local area network (LAN) system, a station (STA) receives, from an access point (AP), channel information related to a multilink, and the channel information may include link identifier information of a plurality of links included in the multilink. The STA transmits, to the AP, link selection information on the basis of the channel information, and the link selection information may include information related to whether the STA can use each of the plurality of links, and information related to whether the STA uses each of the plurality of links for data transmission.

Capability negotiation in multilink

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 device for obtaining critical update information between MLDs in wireless LAN system

In a wireless local area network (WLAN) system, an AP multi-link device (MLD) may estimate an uplink transmission time of a non-simultaneous transmit and receive (STR) station (STA) MLD, and on the basis of the time estimation, uplink transmission and downlink transmission in links of the non-STR STA MLD may not overlap.

Method and device for multi-link EDCA information sharing

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.

Power saving in NSTR environment

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.

Enhanced NDPA frame for sensing

The present invention relates to a method performed by a shared AP in a wireless LAN system, the method comprising 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.

Channel switching for C-OFDMA transmission in multi-AP system

The present disclosure relates to a method for a hybrid automatic repeat request (HARQ) operation at a physical (PHY) layer level in a wireless local area network (LAN) system or an apparatus for performing same. The method is characterized in receiving, from a transmitting station (STA), a physical protocol data unit (PPDU) including a receiver identifier (ID) which is a physical (PHY) layer signal, performing an error check on the PPDU, based on the error check, transmitting an HARQ feedback frame which is a PHY layer signal, and receiving a retransmission PPDU.

HARQ operation at PHY layer level

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.

Technique for performing multi-link communication in wireless communication system

A method performed at a sharing access point (AP) of a wireless local area network (LAN) system may comprise the steps of: transmitting, to a first station (STA), a first measurement notification frame requesting measurement of a received signal strength indicator (RSSI); transmitting, to the first STA, a first measurement request frame for requesting a first path loss value which is path loss information of an overlapping basic service set (OBSS) AP and the first STA and an acceptable receiver interference level (ARIL) value; receiving, from the first STA, a first measurement report frame including the first path loss and a first ARIL value of the first STA; and transmitting, to the first STA, first data.

Growing community of inventors

Seoul, South Korea

Insun Jang