Abstract: This disclosure provides methods, components, devices, and systems that support sounding techniques for ultra-high reliability (UHR) communications. In some implementations, a first communication device may receive a null data packet announcement (NDPA) frame associated with a UHR NDPA variant type. The NDPA frame may include sounding information for communication devices that support UHR communications. The first communication device may receive a null data packet (NDP) in accordance with the sounding information, and may perform UHR communications based on measurements of the NDP. In some other implementations, the first communication device may receive a trigger frame that indicates the NDPA, a sounding mode for transmission of the NDP, and parameters for transmission of a compressed beamforming frame (CBF) associated with the NDP. The first communication device may transmit or receive the NDP in accordance with the sounding mode, and may receive or transmit the CBF using the parameters.

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for group formation and sounding for distributed multi-user multiple input multiple output (MU-MIMO). Some implementations include a method of wireless communication. The method includes transmitting, from a first access point of a plurality of access points, an announcement frame for performing a beamforming procedure for a distributed transmission. The distributed transmission includes a transmission from the plurality of access points. The announcement frame includes at least one identifier of a user terminal in a different basic service set than a basic service set of the first access point. The method further includes transmitting a packet for measuring a channel. The method further includes receiving feedback information from the user terminal based on the packet for measuring the channel.

Abstract: This disclosure provides methods, devices and systems for link adaptation in wireless communications. Some implementations more specifically relate to transmitter-based modulation and coding scheme (MCS) selection. A transmitting device transmits a test packet, over a wireless channel, to a receiving device. The receiving device generates one or more signal-to-interference-plus-noise ratio (SINR) estimates for the wireless channel based on the received sounding packet. In some aspects, each SINR estimate may be associated with a particular modulation order. In some other aspects, each SINR estimate may be generated based on a transmitter configuration or a receiver type to be used for subsequent communications between the transmitting device and the receiving device. The receiving device transmits feedback, including the SINR estimates, to the transmitting device.

Abstract: This disclosure provides methods, components, devices, and systems for ultra-high reliability (UHR) signaling design. Some aspects more specifically relate to an access point (AP) transmitting a frame including a user info field to a wireless station (STA), where the user info field supports UHR parameters. The user info field may include a subfield indicating a coding scheme for communications, where the subfield includes at least two bits to support at least three coding scheme options. Additionally, or alternatively, the AP may transmit a trigger frame indicating for one or more STAs to communicate via distributed resource units (RUs). The AP may arrange the user info fields in the trigger frame to implicitly indicate respective global cyclic shift delay (CSD) indexes to the STAs. A STA receiving the trigger frame may determine a global CSD index corresponding to the STA according to the order of the user info fields.

Abstract: This disclosure provides methods, components, devices and systems for coordinated beamforming (CoBF) information exchange for a transmission phase. Some aspects more specifically relate to information exchange between access points (APs) to support a transmission phase for a CoBF procedure and, additionally, or alternatively, a C-SR procedure. In some examples, a first AP may transmit an invite message associated with a CoBF procedure, the invite message comprising information that pertains to a universal signal (U-SIG), information that pertains to at least one of a legacy signal (L-SIG) and a common field of a ultra-high reliability signal (UHR-SIG), and user information associated with one or more user fields of the UHR-SIG. The first AP may receive, from a second AP and in response to transmission of the invite message, a response message associated with the CoBF procedure.

Abstract: This disclosure provides methods, components, devices, and systems for ultra-high reliability (UHR) signaling design. Some aspects more specifically relate to an access point (AP) transmitting a frame including a user info field to a wireless station (STA), where the user info field supports UHR parameters. The user info field may include a subfield indicating a coding scheme for communications, where the subfield includes at least two bits to support at least three coding scheme options. Additionally, or alternatively, the AP may transmit a trigger frame indicating for one or more STAs to communicate via distributed resource units (RUs). The AP may arrange the user info fields in the trigger frame to implicitly indicate respective global cyclic shift delay (CSD) indexes to the STAs. A STA receiving the trigger frame may determine a global CSD index corresponding to the STA according to the order of the user info fields.

Abstract: This disclosure provides methods, components, devices and systems for 100 MHz transmission. Some aspects more specifically relate to 100 MHz transmission in a defined bandwidth in which a 160 MHz PPDU is supported. In some examples, based on the country code in a beacon frame indicating a country in which a 160 MHz PPDU is supported within a defined bandwidth, wireless communications devices may communicate 100 MHz transmissions within the defined bandwidth. For example, the 100 MHz transmission may be within the lower 100 MHz band of the 160 MHz defined bandwidth. In various aspects, the 100 MHz transmission may include an 80 MHz subband in the lower 80 MHz subband of the 160 MHz PPDU bandwidth and a 20 MHz subband in the upper 80 MHz subband of the 160 MHz PPDU bandwidth. In some aspects, the defined bandwidth may be the 5735 MHz to 5895 MHz band.

Abstract: Certain aspects relate to methods and apparatus for wireless communication. The apparatus generally includes a processing system configured to generate a first frame including an indication of unused resources in a first basic service set (BSS) available to be shared with one or more wireless nodes in one or more second BSSs. The apparatus also includes a first interface configured to output the first frame for transmission to the one or more wireless nodes.

Abstract: This disclosure provides methods, components, devices and systems for signaling for transmission modes among access points (APs). Some aspects more specifically relate to signaling and physical layer protocol date unit (PPDU) formats for implementing coordinated communications among multiple APs, such as for one or more transmission modes, which may include a coordinated beamforming (COBF), a coordinated spatial reuse (C-SR), an interference mitigation (IM), or a vendor specific (VS) transmission mode. In some examples, a first AP may transmit first information in a first subset of bits of a universal signal (U-SIG) field, that indicates a transmission mode of the multiple transmission modes associated with a shared transmission opportunity (TXOP). Different subsets of bits within the U-SIG field may indicate the transmission mode of the shared TXOP and one or more associated parameters of one or both of the APs.

Abstract: This disclosure provides methods, components, devices and systems for communications between access points with different channel configurations. Some aspects more specifically relate to performing a CAP procedure including coordinating APs with different primary channels. In some examples, a first access point (AP) may transmit, to one or more second APs, a physical protocol data unit (PPDU) including information associated with coordination of resources for a coordinated access point (CAP) procedure. At least a portion of the PPDU may be duplicated and transmitted via respective subchannels of at least a portion of a first bandwidth associated with the first AP based on the PPDU including the information associated with the coordination of resources for the CAP procedure. The first AP may communicate with the one or more second APs based on the information associated with the coordination and included in the PPDU.

Abstract: This disclosure provides methods, components, devices and systems for techniques for coordinated beamforming (COBF). Some aspects more specifically relate to COBF sounding. In some examples, a first AP may transmit, to a second AP, a null data packet announcement indicating a sounding occasion and including one or more station information fields that indicate a plurality of parameters for a first null data packet transmission and a second null data packet transmission. The first AP may transmit, during the sounding occasion, the first null data packet transmission in accordance with the plurality of parameters and monitor for one or more sounding feedback messages associated with the first null data packet transmission and associated with the second null data packet transmission. The first AP may transmit, based at least in part on the one or more sounding feedback messages, a coordinated beamforming transmission.

Abstract: This disclosure provides methods, components, devices and systems for coordinated spatial reuse in Wi-Fi, such as a coordinated beamforming (COBF) transmission mode or a coordinated spatial reuse (C-SR) transmission mode. Some aspects more specifically relate to a sharing access point (AP) and shared AP exchanging communications that facilitate the utilization of a transmission mode. In some implementations, a first AP may transmit, to a second AP, a message that includes first information associated with coordinated transmissions in which the first AP and the second AP concurrently transmit to one or more associated stations (STAs). The first information may include one or more of transmit power information for the coordinated transmissions, alignment information for the coordinated transmissions, or a transmission mode. The first AP and the second AP may proceed with coordinated communications within a shared transmission opportunity using the COBF transmission mode or the C-SR transmission mode.

Abstract: Certain aspects of the present disclosure provides a method for signaling support for optional wireless features. According to certain aspects, an apparatus (e.g., an AP or non-AP STA) outputs at least one first element that indicates a capability of the apparatus to support one or more features considered optional for a communication session, obtains at least one second element that indicates a capability of a wireless node to support the one or more features for the communication session, and participates in the communication session with the wireless node in accordance with the capability indicated in at least one of the first element or the second element.

Abstract: This disclosure provides methods, components, devices and systems for multi-layer signaling for ambient power (AMP) devices. Some aspects more specifically relate to AMP device physical layer protocol data unit (PPDU) differentiation. For example, a wireless device (such as the AMP device) may receive a PPDU during a transmission opportunity (TxOP), the PPDU including at least one of at least one spoofing preamble portion, at least one downlink data portion, and at least one uplink data portion, where one or more fields in the at least one spoofing preamble portion, the at least one downlink data portion, or both, define the PPDU as an AMP device PPDU. The wireless device may transmit an uplink signal according to the field(s) defining the PPDU as the AMP device PPDU. In some aspects, the wireless device may receive one or more excitation signals in association with an uplink transmission trigger or response signal.

Abstract: This disclosure provides methods, components, devices, and systems for ultra-high reliability (UHR) signaling design. Some aspects more specifically relate to an access point (AP) transmitting a frame including a user info field to a wireless station (STA), where the user info field supports UHR parameters. The user info field may include a subfield indicating a coding scheme for communications, where the subfield includes at least two bits to support at least three coding scheme options. Additionally, or alternatively, the AP may transmit a trigger frame indicating for one or more STAs to communicate via distributed resource units (RUs). The AP may arrange the user info fields in the trigger frame to implicitly indicate respective global cyclic shift delay (CSD) indexes to the STAs. A STA receiving the trigger frame may determine a global CSD index corresponding to the STA according to the order of the user info fields.

Abstract: This disclosure provides methods, components, devices and systems for multi-layer signaling for ambient power (AMP) devices. Some aspects enable early differentiation between non-backscatter AMP device types through signaling in AMP downlink physical layer protocol data units (PPDUs). For example, a wireless device receives a first portion of an AMP downlink PPDU indicating an intended STA type (such as an active transmitter or an AMP-enabled device) and selectively receives subsequent portions of the AMP downlink PPDU in accordance with whether the type of the wireless device matches the indicated type. In scenarios in which the types match, the wireless device continues receiving the PPDU. Otherwise, the wireless device ceases reception to conserve energy and processing resources. The first portion may include one or more fields that indicate the intended STA type, may indicate a medium access control (MAC) frame type that implicitly indicates the intended STA type, or both.

Abstract: This disclosure provides methods, components, devices and systems for coordinated spatial reuse in Wi-Fi, such as a coordinated beamforming (COBF) transmission mode or a coordinated spatial reuse (C-SR) transmission mode. Some aspects more specifically relate to a sharing access point (AP) and shared AP exchanging communications that facilitate the utilization of a transmission mode. In some implementations, a first AP may transmit, to a second AP, a message that includes first information associated with coordinated transmissions in which the first AP and the second AP concurrently transmit to one or more associated stations (STAs). The first information may include one or more of transmit power information for the coordinated transmissions, alignment information for the coordinated transmissions, or a transmission mode. The first AP and the second AP may proceed with coordinated communications within a shared transmission opportunity using the COBF transmission mode or the C-SR transmission mode.

Abstract: This disclosure provides methods, components, devices and systems for interference mitigation (IM) mode signaling designs for a physical layer protocol data unit (PPDU). Some aspects relate to IM mode signaling designs according to which a wireless communication device determines a tone plan in accordance with an ON or OFF state of the IM mode. For example, an ON state of the IM mode may correspond to a first tone plan and an OFF state of the IM mode may correspond to a second tone plan. The first tone plan may define first fixed pilot tone locations, with pilot tones at the first fixed pilot tone locations being usable as IM pilot tones and/or usable as carrier frequency offset (CFO) pilot tones. The second tone plan may define second fixed pilot tone locations, with pilot tones at the second fixed pilot tone locations being exclusively usable as CFO pilot tones.

Abstract: This disclosure provides methods, components, devices and systems for interference mitigation (IM) mode signaling designs for a physical layer (PHY) protocol data unit (PPDU). Some aspects relate to IM mode signaling designs according to which two or more wireless communication devices may determine locations of IM pilot tones within a data portion of a PPDU. In some examples, the wireless communication device may input IM pilot tones prior to a spatial mapping stage in a transmit flow. In such examples, the wireless communication device may insert the IM pilot tones at fixed locations within the data portion of the PPDU and may support an interleaving stage such that the IM pilot tones are factored in. The interleaving stage may be associated with a tone mapping distance or an interleaver that is specific to scenarios in which the IM mode is set to an ON state.

Abstract: This disclosure provides methods, components, devices and systems for interference mitigation (IM) mode signaling designs for a physical layer protocol data unit (PPDU). Some aspects relate to IM mode signaling designs according to which two or more wireless communication devices determine locations of IM pilot tones within a data portion of a PPDU comprising a multiple resource unit (MRU). In such aspects, an MRU may be defined with multiple tone separation distances including a tone separation distance that corresponds to an ON state of the IM mode. Some further aspects relate to IM mode signaling designs according to which two or more wireless communication devices determine locations of pilot tones within a data portion of a PPDU that are usable as IM pilot tones and/or as carrier frequency offset (CFO) pilot tones. In such aspects, the data portion may exclude IM- or CFO-specific pilot tones.