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 (PHY) protocol data unit (PPDU). Some aspects relate to IM mode signaling designs according to which two or more wireless communication devices may coordinate on a state associated with an IM mode as part of various communication schemes, such as an orthogonal frequency division multiple access (OFDMA) communication scheme. In some examples, a wireless communication device may indicate, via one or more fields of a message (such as a multi-user (MU) PPDU or a trigger frame), information indicative of a respective state associated with the IM mode for each wireless communication device of a set of multiple wireless communication devices. The one or more fields may include a field that is applicable to the multiple wireless communication devices and/or one or more user information fields.

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.

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). According to some multi-user (MU) PPDU IM mode signaling designs, a first wireless communication device may indicate, to a second wireless communication device via a preamble portion of a first PPDU, a state associated with the IM mode for the first PPDU. Additionally, or alternatively, the first wireless communication device may indicate, to the second wireless communication device via the preamble portion of the first PPDU, a requested or commanded state associated with the IM mode for PPDU(s) transmitted by the second wireless communication device to the first wireless communication device. In accordance with some example trigger-based (TB) PPDU IM mode signaling designs, a first wireless communication device may indicate a state associated with the IM mode for a TB PPDU via a trigger frame.

Abstract: Certain aspects of the present disclosure provides a method for wireless communication utilizing coordinated beamforming (CoBF). According to certain aspects, an apparatus (e.g., a non-AP STA) obtain a joint packet output simultaneously from a first wireless node and a second wireless node, wherein the first wireless node is associated with a first basic service set (BSS) and the apparatus and second wireless node are associated with a second BSS and the joint packet has a training field with one or more first spatial streams from the first wireless node and one or more second spatial streams from the second wireless node; generates channel feedback, based on the first spatial streams, for a first channel between the first wireless node and the apparatus; and provides the channel feedback to at least one of the first wireless node or the second wireless node.

Abstract: This disclosure provides methods, devices and systems for generating packet preambles. Some implementations more specifically relate to preamble designs for special cases such as, for example, full-bandwidth multi-user multiple-input multiple-output (MU-MIMO), single-user (SU) preamble puncturing, hybrid automatic repeat request (HARQ), and multi-AP coordination. Multi-AP coordination may refer to coordinated beamforming (CoBF), joint transmission (JT), or coordinated orthogonal frequency division multiple access (C-OFDMA). Additionally, or alternatively, some implementations more specifically relate to preamble designs that accommodate signal fields of different cases.

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for physical layer (PHY) packet design for power spectral density (PSD) limits. In some implementations, a wireless communication device generates a plurality of PHY convergence protocol (PLCP) protocol data unit (PPDU) duplicates configured for transmission over a selected bandwidth, and transmits each PPDU duplicate of the plurality of PPDU duplicates on a corresponding frequency subband of a plurality of different frequency subbands. In some other implementations, the wireless communication device generates a PPDU for transmission over a set of duplicated resource units (RUs) allocated to the wireless communication device, and transmits the PPDU over the allocated set of duplicated RUs.

Abstract: Methods, systems, and devices for wireless communications are described. A first device may transmit control signaling to a second device. The control signaling may indicate a set of different modulation and coding schemes (MCSs) to be applied to at least one of a set of spatial streams or a set of resource units (RUs), where the control signaling may indicate that a respective MCS to be applied to a respective spatial stream or to a respective RU. The first device may transmit, one or more first bits of a first service data unit to the second device via a first spatial stream of or via a first RU using a first MCS and transmit one or more second bits, of the first service data unit or of a second service data unit via a second spatial stream or via a second RU using a second MCS.

Abstract: Certain aspects of the present disclosure provide a method for wireless communication utilizing coordinated communication, such as coordinated beamforming (CoBF). According to certain aspects, an apparatus (e.g., an AP or non-AP STA) obtains a first frame that includes a preamble, said preamble having: at least one common portion applicable to a first basic service set (BSS) and a second BSS, wherein the first wireless node is associated with the first BSS, one or more user-specific portions, an indication that the first frame is part of a coordinated communication scheme involving the first BSS and the second BSS, and information that identifies the first BSS and the second BSS; and processes the one or more user-specific portions, based on the indication and the information.

Abstract: This disclosure provides methods, components, devices and systems for using a unified framework for coordinated transmission modes, such as a coordinated beamforming (CBF) mode, a coordinated spatial reuse (CSR) transmission mode, and a dedicated transmission opportunity (TXOP) transmission mode. Some aspects more specifically relate to a sharing and shared access point (AP) exchanging communications that facilitate the utilization of a transmission mode. In some implementations, a first AP may transmit, to a second AP, a trigger message that includes an indication of a first station (STA) to be scheduled during a TXOP. The second AP may respond with an indication of whether the second AP can attenuate a transmit signal to the first STA to facilitate the CBF mode. The first STA may proceed with communications via the CBF mode, CSR mode, or dedicated mode in accordance with whether the second AP can attenuate the signal, among other considerations.