Lg Electronics Inc.

Taewon Song

Jeongki Kim

Jinsoo Choi

Insun Jang

Suhwook Kim

Sungjin Park

Namyeong Kim

Kiseon Ryu

Jinmin Kim

Eunsung Park

Sunhee Baek

Hangyu Cho

Dongguk Lim

Jinyoung Chun

Hyunhee Park

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.

Measurement for space reuse in multi-AP 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 (LAN) system, a transmission MLD may include a first station (STA) and a second STA, which operate in a first link and a second link, respectively. The transmission MLD may transmit, to a reception MLD, a connection request frame including 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 include first information related to an STA (among STAs in the transmission MLD) which operating in the restricted BSS mode, in which monitoring for signal reception (by the STA operating in the restricted BSS from an STA not operating in the restricted BSS mode) is performed based on acquisition of information indicating reception of a signal. The transmission MLD may receive a connection response frame from the reception MLD.

Dynamic configuration of multi-link function in wireless LAN system

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

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.

Reuse of space in multi-ap 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.

Technique for performing multi-link 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.

Technique for performing multilink communication 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.

Multi-link setup 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

According to various embodiments, a multi-link device (MLD) operating in a plurality of links may transmit a first request frame for requesting information on the plurality of links. The multi-link device may receive a first response frame on the basis of the first request frame. The first response frame may include information on a ratio of stations (STAs) using a first link as an anchor link, and information on a ratio of STAs using a second link as an anchor link.

In a wireless local area network (LAN) system, a shared AP may determine PPDU transmission power to be transmitted to an STA on the basis of an ARIL of the STA, transmission power of a signal transmitted to the STA by a sharing AP, and an RSSI of a signal received from the sharing AP by the STA.

Transmission power in multi-AP transmission using space reuse

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 device for acquiring information on links between MLDs in wireless LAN 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.

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Seoul, South Korea

Taewon Song