Lg Electronics Inc.

Yonsei University

Seoul National University

Suhwook Kim

Jeongki Kim

Kiseon Ryu

Hangyu Cho

Jinsoo Choi

Taewon Song

Insun Jang

Giwon Park

Sungjin Park

Hyunhee Park

Jinyoung Chun

Bonghoe Kim

Namyeong Kim

Wookbong Lee

Hyeyoung Choi

Jaewon Lim

Jinsam Kwak

Dongguk Lim

Eunsung Park

Yunjung Yi

Jinho Kim

Byungjoo Lee

Jinmin Kim

Dongcheol Kim

Yongho Seok

Junho Jo

Eunsun Kim

Seunghee Han

Jungwoo Kim

Sanggook Kim

Saehee Bang

Jong-Moon Chung

Dae Won Lee

Jihyun Lee

Minseok Kim

Sanghyun Kim

Joonhyung Kim

Insun Lee

Illsoo Sohn

JaeHyung Song

Inhwan Choi

Sunhee Baek

Wongyu Song

Jaehyung Song

Kyungchul Kwak

Jihoon Yun

Donghyuk Han

Jimsam Kwak

Taeyoung Ha

Sungjin Shin

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

One embodiment according to the present specification relates to a method for performing low latency communication. A transmitting STA can transmit a low latency communication notification frame including information related to a section for low latency communication. The transmitting STA and a receiving STA can perform low latency communication in the section for low latency communication on the basis of the low latency communication notification frame. Afterward, the transmitting STA can transmit a low latency communication termination frame. The transmitting STA and the receiving STA can terminate the section for low latency communication on the basis of the low latency communication termination frame.

Technique for performing low latency communication in wireless LAN system

One embodiment according to the present specification relates to a method for performing low-latency communication. A receiving STA can receive information about an access type from a transmitting STA. The receiving STA can identify a transmittable access category on the basis of information about the access type. The receiving STA can transmit data about the transmittable access category to the transmitting STA.

Technique for performing low-latency communication in wireless LAN system

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.

Transmission of capability information about 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.

Link deactivation in multi-link

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.

Technique for performing multi-link communication in wireless communication system

The present specification relates to a high-efficiency wireless LAN standard operating in a new band. A reception station (STA) according to one embodiment of the present specification can carry out a step of receiving a discovery frame via a 2.4 GHz band or 5 GHz band from a first access point (AP), wherein the discovery frame includes information related to a second AP operating in a 6 GHz band. The reception STA can carry out an association procedure for the second AP operating in the 6 GHz band on the basis of the received information.

Method and device for obtaining information about communication entity operating in new band in wireless LAN 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.

Technique for performing multilink communication in wireless communication system

According to various embodiments, a multi-link device (MLD) may transmit, to an AP, a request frame for changing a primary link. On the basis of the request frame, the MLD may receive a response frame from the AP. On the basis of the response frame, the MLD may determine whether to change the primary link.

Method for performing multi-link communication in wireless communication system

In a wireless local area network (WLAN) system, an STA performs CCA on resources allocated thereto via a trigger frame from an AP and can transmit a TB PPDU via an idle channel among the allocated resources on the basis of the result of the CCA, wherein the PHY of the TB PPDU may include information about the result of the CCA.

Trigger-based data transmission

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.

HARQ operations at PHY layer level

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.

Shared AP selection in multi-AP 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.

A method performed by a first STA in a wireless local area network (WLAN) according to various embodiments may comprise transmitting or receiving a TWT setup request message and a TWT setup response message. The first STA may perform a TWT operation on the basis of the TWT setup request message and the TWT setup response message. The TWT setup request message and the TWT setup response message may be transmitted or received through a first link included in multiple links. The first STA may set the first link to be in an awake state in order to perform the TWT operation through the first link.

Method and apparatus for transmitting or receiving information relating to link in wireless LAN system

Growing community of inventors

Seoul, South Korea

Suhwook Kim