Abstract: Certain aspects of the present disclosure provide methods and apparatus for using frames having beamforming training fields with base complementary code sequences that have a longer length than complementary code sequences used in other fields of the frame. The longer length may help perform channel estimation when encountering longer delay spread, for example, due to multipath effects of multiple beams during a beamforming training procedure. The longer length may be based on a lengthening factor which may be signaled, for example, using on or more bits of a preamble portion of the frames.

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for wireless communication. More particularly, aspects of the present disclosure generally relate to techniques for wireless communications by an apparatus comprising a processing system configured to a processing system configured to generate a frame having at least a first header that is phase modulated and to modulate an amplitude of the first header prior to the first header being amplified by a power amplifier, and a first interface configured to output the frame for transmission.

Abstract: Certain aspects of the present disclosure provide methods and apparatus for generating frames with dual mode channel estimation fields (CEFs) that may accommodate devices with different processing capabilities. In some examples, a frame that is generated comprises a first portion for transmission on separate channels, and a second portion for transmission using channel bonding. The second portion has a training field including first complementary sequences, a first channel estimation field (CEF) including second complementary sequences, and a second CEF including one of the first complementary sequences of the training field and a subset of the second complementary sequences of the first CEF.

Abstract: Certain aspects of the present disclosure provide methods and apparatus for generating frames with portions utilizing different guard interval (GI) lengths. For example, an apparatus may include a processing system configured to generate a frame including a first portion with first blocks of symbols, including an end first block, surrounded by first guard interval (GI) sequences of a first GI length, and a second portion with second blocks of symbols, including a starting second block, surrounded by second GI sequences of a second GI length, and an interface for outputting the frame for transmission. A longer GI sequence of the first and second GI sequences may include a shorter of the first and second GI sequences, and the longer GI sequence of the first and second GI sequences may separate the end first block from the starting second block.

Abstract: A technique is disclosed for reducing interference in a communication system including a plurality of wireless devices. A first device transmits a frame (e.g., an RTS frame or a CTS frame) to a second device, the frame including information from which a non-target third device may use to estimate potential interference at the first device based on a proposed transmission to a fourth device. The information includes at least one of an interference and sensitivity factor (ISF), transmit power, and reciprocity factor (a difference between an antenna receive gain and an antenna transmit gain). Using the information in the frame to estimate the potential interference at the first device, the third device may choose to proceed with the proposed transmission if the estimated potential interference is less than a threshold; or withdraw or modify the proposed transmission if the estimated potential interference is greater than or equal to a threshold.

Abstract: Certain aspects of the present disclosure provide methods and apparatus for efficiently signaling multiple modulation and coding schemes (MCSs) for different streams of multiple-input multiple-output (MIMO) transmission. Certain aspects provide an apparatus including a processing system configured to generate a frame with a payload and a header portion. The header portion may include a first set of bits indicating a plurality of MCSs and a second set of one or more bits indicating, for each portion of a plurality of portions of the payload, one of the plurality of MCSs used to encode the corresponding portion of the payload. In certain aspects, the apparatus also include an interface configured to output the frame for transmission.

Abstract: Certain aspects of the present disclosure provide methods and apparatus for managing channel access using multiple backoff counters.

Abstract: Certain aspects of the present disclosure provide techniques that may help reduce sector sweep time. In some cases, the techniques involve generating frames for transmission during a sector sweep procedure, each frame including an address field being determined based on at least one of a transmitter address of the apparatus or a receiver address of an intended recipient of the generated frames and having fewer bits than at least one of the transmitter address or the receiver address. In some cases, the techniques involve using different frame formats for initiator and responder frames transmitted during the sector sweep procedure.

Abstract: Certain aspects of the present disclosure provide methods and apparatus for performing communications using a bonded channel across multiple channels.

Abstract: Certain aspects of the present disclosure relate to switching mode of operation between an apparatus and a wireless node. An apparatus for wireless communication may generate a first frame comprising one or more fields indicating at least one of a request to change a mode for communication between the apparatus and a wireless node, wherein the change in the mode includes switching to one of single-input single-output (SISO), single-user multi-input multi-output (SU-MIMO), or multi-user MIMO (MU-MIMO) operation, or one or more parameters related to the change and output the first frame for transmission. Correspondingly, an apparatus for wireless communication may obtain a first frame comprising one or more fields indicating a request to change a mode for communication between the apparatus and a wireless node or parameters related to the change and take one or more actions to communicate in accordance with the change in the mode or the parameters.

Abstract: Certain aspects of the present disclosure generally relate to passive positioning based on directional transmissions, such as directional beacons transmitted during a sector sweep procedure.

Abstract: Certain aspects of the present disclosure provide an apparatus for wireless communication. The apparatus may generally include a first interface configured to obtain a first frame on at least one channel, a processing system configured to perform an assessment on the at least one channel, and generate a second frame after obtaining the first frame, and determine a transmission time of the second frame based on results of the assessment, and a second interface configured output the second frame for transmission on the at least one channel according to the determined transmission time.

Abstract: Certain aspects of the present disclosure generally relate to beamforming training for a sector corresponding to a line of sight (LOS). For example, certain aspects of the present disclosure provide an apparatus for wireless communications. The apparatus generally includes an interface for obtaining a plurality of frames from a wireless node during a sector sweep procedure, and a processing system configured to select a frame of the plurality of frames as corresponding to a line of sight (LOS) between the apparatus and the wireless node based on a relative time of flight (RTOF) of the frame, and perform beamforming using the selected frame.

Abstract: Certain aspects relate to methods and apparatus for wireless communication. Particularly, aspects relate to techniques for wireless communications by an apparatus including a receive processing chain configured to process frames of a first type obtained via an omnidirectional antenna and frames of a second type obtained via an antenna array, a detector configured to detect a preamble portion of a frame of the first type, and a processing system configured to switch an input path of the receive processing chain from the antenna array to the omnidirectional antenna after the detection. Other aspects relate to wireless communications by an apparatus including a processing system that generates a frame of a first type having an indication that the apparatus can switch between outputting omnidirectional frames and outputting beamforming frames for transmission independent of channel reservation signaling, and a first interface configured to output the frame of the first type for transmission.

Abstract: Certain aspects of the present disclosure relate to beamforming training using a multiple-input and multiple-output (MIMO) transmission scheme. Certain aspects of the present disclosure provide an apparatus that generally includes a processing system configured to generate a frame associated with beamforming training, the frame comprising an indication of whether the beamforming training is to be performed using a multiple-input and multiple-output (MIMO) transmission scheme. The apparatus may also include an interface configured to output the frame for transmission.

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for wireless communication. More particularly, aspects of the present disclosure generally relate to techniques for providing an indication of an operating mode involving an enhanced modulation scheme.

Abstract: Certain aspects of the present disclosure generally relate to mobility support for wireless local area network (WLAN) devices, such as 60 GHz millimeter wave (e.g. IEEE 802.11ay) devices. An exemplary method includes obtaining an indication of a coherence time associated with a wireless node, generating a frame having additional Channel Estimation Fields, which can occur periodically in the frame, based at least in part on the indicated coherence time, or having Scattered Pilots in Orthogonal Frequency Division Multiplexing (OFDM) symbols, and outputting the frame for transmission to the wireless node.

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for wireless communication. More particularly, aspects of the present disclosure generally relate to techniques for wireless communications by an apparatus comprising a processing system configured to a processing system configured to generate a frame having at least a first header that is phase modulated and to modulate an amplitude of the first header prior to the first header being amplified by a power amplifier, and a first interface configured to output the frame for transmission.

Abstract: Certain aspects of the present disclosure provide techniques that may help reduce sector sweep time. In some cases, the techniques involve generating frames for transmission during a sector sweep procedure, each frame including one or more address fields being determined based on at least one of a transmitter address of the apparatus or a receiver address of an intended recipient of the generated frames and having fewer bits than at least one of the transmitter address or the receiver address.

Abstract: Certain aspects of the present disclosure provide methods and apparatuses for wireless communications between devices. An example method generally includes obtaining, via a non-audible signal, identification information, and using the identification to establish a connection, via a radio access technology (RAT), with a second device for transferring data between the first device and the second device via the RAT.