Abstract: The present disclosure relates to a network device for announcing a multi-access point (M-AP), joint channel sounding procedure in a WiFi network for acquiring channel state information between multiple access points (APs), which belong to a same M-AP set, and multiple stations associated with at least one of those multiple APs, wherein the network device is an access point of a subset of the M-AP set which subset includes APs that are configured to transmit an announcement frame, the network device comprising: a processor configured to provide the announcement frame of the M-AP joint channel sounding procedure, wherein the announcement frame comprises an identification of the M-AP set and identifications of the APs, associated to the subset of the M-AP set which subset of APs is configured to transmit the announcement frame; and a transceiver configured to transmit the announcement frame.

Abstract: A system and method for triggering beamformed uplink (UL) physical layer protocol data units (PPDUs) are disclosed. The system comprises an access point (AP) and one or more stations (STAs). The AP sends a soliciting frame to the one or more STAs, wherein the frame comprises a null data packet, NDP, request, NDPR, indicator and receive an NDP PPDU from each of the one or more solicited STAs. The AP, then computes the precoder for each of the one or more solicited STAs and send the one or more solicited STA a trigger frame with a beamforming report. The AP receives from each of the STAs one or more beamformed UL data packets and sends a block acknowledgement to the one or more solicited STAs indicating the successful receipt of the one or more beamformed UL data packets.

Abstract: This disclosure relates to a shared access point, AP, (120) configured to participate in a coordinated transmission making use of at least a portion of at least one transmission opportunity, TXOP, obtained and shared by a sharing AP (110) operating under a coordination agreement within a Multi-AP, M-AP, set. The shared AP (120) comprises a processing circuitry (121) configured to modify at least one parameter of a plurality of coordination operation related parameters. Moreover, the shared AP (120) comprises a communication interface (123) configured to transmit a frame to the sharing AP (110). The frame comprises a coordination status field comprising information indicative of the at least one modified parameter of the plurality of coordination operation related parameters.

Abstract: A sharing access point (AP) configured to share a transmission opportunity (TXOP) with a plurality of shared APs operating under a coordination agreement within a multi-AP (M-AP) set for participating in a coordinated transmission to one or more non-AP stations associated with the sharing AP and a plurality of further non-AP stations associated with the shared APs. The sharing AP is configured to receive completion status information indicative of a completion status of transmitting information related to an operation under the coordination agreement to one or more of the plurality of further non-AP stations associated with the respective shared AP. Moreover, the sharing AP is configured, based on the completion status information of each of the one or more of the plurality of shared APs, to generate and maintain a data structure indicating the completion status for each of the plurality of shared APs.

Abstract: A wireless initiator access point comprising a communication interface with an array of antennas and configured to operate the array of antennas with a precoding configuration for multi-user multiple-input multiple-output (MU-MIMO) communication with a plurality of wireless stations; send a Null Data Packet (NDP) Announcement frame to the wireless stations; trigger a wireless participator access point to send an NDP frame to the wireless stations; receive a plurality of Compressed Beamforming frames from the wireless stations; and forward the Compressed Beamforming frames to the wireless participator access point.

Abstract: A method of configuring a multiple Access Points (M-AP) set includes transmitting, by an access point (AP) initiating a new M-AP set, an information element including a plurality of octets. One of the plurality of octets indicates the presence of an extended capabilities octet of the plurality of octets. A bit of the extended capabilities octet indicates if an M-AP Coordinated Transmissions (CT) Basic Service Set (BSS) is enabled for this AP. A method of establishing a multiple Access Points (M-AP) set between APs includes transmitting, by a first AP, a first message advertising an M-AP Coordinated Transmission (CT) Basic Service Set (BSS), receiving, by the first AP, from a second AP, a second message advertising a second M-AP CT BSS, and initiate peering, in response to receiving the first message or the second message, used by an M-AP set including the first AP and the second AP.

Abstract: A wireless access point (AP) is disclosed, which is configured to share a transmission opportunity with at least one further wireless access point within a Multi-AP set using a Coordinated Beamforming (C-BF) scheme. The wireless AP comprises a processing circuitry configured to generate a C-BF Null Data PPDU Announcement (C-BF NDPA) frame, wherein the C-BF NDPA frame comprises a Multi-AP set identifier. Moreover, the wireless AP comprises a communication interface configured to transmit the C-BF NDPA frame to one or more wireless stations associated with the wireless AP and/or to one or more further wireless stations associated with the at least one further wireless AP within the Multi-AP set.

Abstract: This disclosure describes systems, methods, and devices related to group addressed data delivery. A device may determine a plurality of links between one or more access points (APs) in an AP multi-link device (MLD) and one or more logical non-AP stations (STAs) in a non-AP MLD. The device may determine one or more group addressed frames to be sent from the one or more APs of the AP MLD to the one or more non-AP STAs of the non-AP MLD. The device may generate a delivery traffic indication map (DTIM) associated with each link to be used by the one or more non-AP STAs of the non-AP MLD to receive group addressed frames. The device may perform an action based on whether the non-AP MLD sent an indication that a first link of the plurality of links is selected by the non-AP MLD for receiving a first group addressed frame from the one or more group addressed frames.

Abstract: A method of uplink sounding signal triggering, performed by an access point (AP), comprises the steps of transmitting, by the AP, a triggering signal to one or more stations (STAs), triggering transmission of a respective sounding signal from at least one STA of the one or more STAs in response to the triggering signal; receiving, by the AP, the respective sounding signal from the at least one STA; and determining, by the AP, a precoder to be used by the at least one STA based on the respective sounding signal, and transmitting corresponding precoder information to the at least one STA for data transmission, wherein the triggering signal comprises a null data packet announcement (NDPA) signal or a null data packet request (NDPR) signal and the sounding signal comprises a triggered sounding null data packet (NDP) signal.

Abstract: For example, a wireless communication device may be configured to determine an expected interference-based value corresponding to an Uplink (UL) transmission from a wireless communication station (STA) in a Trigger-Based (TB) Multi-User (MU) UL transmission to be communicated from a plurality of STAs to the wireless communication device; to determine one or more transmit (Tx) configuration parameters for the STA based on the expected interference-based value corresponding to the UL transmission from the STA; and to transmit a trigger frame to trigger the TB MU UL transmission, the trigger frame including the one or more Tx configuration parameters to configure the UL transmission from the STA.

Abstract: This disclosure describes systems, methods, and devices related to high throughput (HT) control information. A device may determine a frame comprising HT control information. The device may determine to extend a size of the HT control information. The device may cause to generate a management or data frame for sending to a first station device of one or more station devices, the management or data frame comprising extended high throughput (HT) control information, define a new control identification (ID) associated with the extended HT control information, and cause to send the management or data frame to the first station device.

Abstract: A sharing access point, AP, is configured to share at least a portion of a transmission opportunity, TXOP, with one or more shared APs within a Multi-AP, M-AP, set for participating in a coordinated transmission. The sharing AP comprises a processing circuitry configured to generate a M-AP trigger frame; and a communication interface configured to transmit the M-AP trigger frame to a shared AP within the M-AP set. The M-AP trigger frame is configured to solicit the shared AP to initiate a coordination-related procedure with one or more non-AP stations associated with the shared AP and/or with one or more OBSS non-AP stations associated with one or more further shared APs within the M-AP set and to transmit a completion notification frame to the sharing AP. The communication interface is further configured to receive from the shared AP the completion notification frame indicating the completion of the coordination-related procedure.

Abstract: This disclosure describes systems, methods, and devices related to multi-link device (MLD) data continuity. An MLD device may set up one or more links with a station multi-link device (STA MLD), wherein the STA MLD comprises one or more logical entities defining separate station devices. The MLD device may transmit a data packet associated with a traffic identifier (TID) to the STA MLD. The MLD device may determine that the data packet was not received by the STA MLD. The MLD device may retransmit the data packet to the STA MLD. The MLD device may increment a retransmit counter every time the data packet is retransmitted. The MLD device may refrain from transmitting a second data packet until the data packet is dropped or successfully received by the STA MLD.

Abstract: A wireless initiator access point comprising a communication interface with an array of antennas and configured to operate the array of antennas with a precoding configuration for multi-user multiple-input multiple-output (MU-MIMO) communication with a plurality of wireless stations; send a Null Data Packet (NDP) Announcement frame to the wireless stations; trigger a wireless participator access point to send an NDP frame to the wireless stations; receive a plurality of Compressed Beamforming frames from the wireless stations; and forward the Compressed Beamforming frames to the wireless participator access point.

Abstract: The application relates to a method and apparatus used in Wireless Local Area Networks (WLANs). The apparatus includes: a Radio Frequency (RF) interface; and processor circuitry coupled with the RF interface and configured to: determine Buffered Unit (BU) information, which indicates presence or absence of BUs for a set of non-Access Point (AP) Multi-link Devices (MLDs) on an AP MLD; encapsulate the BU information for the set of non-AP MLDs in a Multilink (ML) Traffic Indication Map (TIM) information element; and provide the ML TIM information element to the RF interface for broadcasting, wherein the ML TIM information element comprises a series of TIM segments and each TIM segment contains the BU information, which indicates the presence or absence of BUs for a subset of non-AP MLDs on a corresponding AP within the AP MLD.

Abstract: This disclosure describes systems, methods, and devices related to security for multi-link operation. A device may determine a multi-link communication with a first multi-link device comprising two or more links associated with two or more station devices (STAs) included in the first multi-link device. The device may determine a first medium access control (MAC) address associated with a first link of the two or more links. The device may determine a second MAC address associated with a second link of the two or more links. The device may generate one or more pairwise security keys to be used in the multi-link communication on the two or more links. The device may cause to send a frame to the first multi-link device using at least one combination of the one or more pairwise security keys.

Abstract: This disclosure describes systems, methods, and devices related to security for multi-link operations. A multi-link device (MLD) may establish a first communication link between a first device of the MLD and a first device of a second MLD, and a second communication link between a second device of the MLD and a second device of the second MLD. The MLD may generate a group-addressed message. The MLD may protect the group-addressed message using a first key or a first integrity key. The MLD may protect the group-addressed message using a second key or a second integrity key. The MLD may send, using the first communication link, the group-addressed message protected using the first key or the first integrity key, and may send, using the second communication link, the group-addressed message protected using the second key or the second integrity key.

Abstract: A channel sounding method and a channel sounding apparatus are disclosed. The method includes: A first communication apparatus sends a null data packet announcement (NDPA) frame, and sends a null data packet (NDP); and a second communication apparatus and a third communication apparatus receive the NDPA frame and the NDP.

Abstract: This disclosure describes systems, methods, and devices related to high throughput (HT) control information. A device may determine a frame comprising HT control information. The device may determine to extend a size of the HT control information. The device may cause to generate a management or data frame for sending to a first station device of one or more station devices, the management or data frame comprising extended high throughput (HT) control information, define a new control identification (ID) associated with the extended HT control information, and cause to send the management or data frame to the first station device.

Abstract: A sharing AP (110) is configured to share a transmission opportunity, TXOP, with a shared AP (120, 130) within a Multi-AP set for participating in a coordinated transmission, wherein the sharing AP (110) is configured to communicate with one or more stations (115a-c) associated with the sharing AP via one or more spatial streams and the shared AP is configured to communicate with one or more stations (125a,b) associated with the shared AP via one or more further spatial streams.