Abstract: Certain aspects of the present disclosure provide an apparatus for wireless communications. The apparatus includes a processing system configured to generate a frame comprising a first channel estimation sequence for transmission via a first channel, a second channel estimation sequence for transmission via a second channel, and at least a first portion of a data payload for transmission via a third channel, wherein the first channel includes a first frequency band, wherein the second channel includes a second frequency band different from the first frequency band, and wherein the third channel includes a third frequency band that overlaps in frequency with the first and second frequency bands; and an interface configured to output the frame for transmission.

Abstract: Certain aspects of the present disclosure provide an apparatus for wireless communications. The apparatus includes a processing system configured to generate a frame comprising a preamble, a first header, and a second header, wherein the preamble and the first header are configured to be decoded by a first device operating according to a first protocol, the second header not being configured to be decoded by the first device, and wherein the preamble, the first header, and the second header are configured to be decoded by a second device operating according to a second protocol; and an interface configured to output the frame for transmission.

Abstract: An apparatus for wireless communications is disclosed. The apparatus includes a processing system configured to generate a frame having a preamble, a header, and a data payload, wherein the preamble, the header, and the data payload are decodable by a first device when operating according to a first protocol, wherein the preamble and the header are decodable by a second device when operating according to a second protocol, the data payload not being decodable by the second device when operating according to the second protocol; and an interface configured to output the frame for transmission.

Abstract: Certain aspects of the present disclosure provide techniques to reduce address collision in short sector sweeps. In some cases, the techniques involve determining whether an encoded address (e.g., a compressed address), generated using a first parameter (e.g., a seed for a hash function), identifies a first wireless node and a second wireless node as a same destination for at least one first frame including the encoded address; generating at least one second frame including an indication not to use the first parameter if the encoded address identifies the first wireless node and the second wireless node as the same destination; and outputting the at least one second frame for transmission to at least one of the first wireless node or the second wireless node.

Abstract: Methods for wireless communication and system therefrom are provided. According to aspects, a method includes generating a plurality of training packets for transmission, and outputting each of the plurality of training packets for transmission to a device in a different one of a plurality of directions, wherein at least two of the plurality of training packets are output for transmission to the device in at least two of the plurality of directions using orthogonal transmission types. The method also includes obtaining a feedback signal comprising information for identifying at least one of the plurality of directions to be used for wireless communications with the device.

Abstract: In certain aspects of the present disclosure, an apparatus for wireless communications comprises a processing system configured to generate a frame comprising first information indicating a plurality of channels to be used by the apparatus for a transmission and second information indicating a time duration of the transmission. The apparatus also comprises an interface configured to output the frame for wireless transmission on at least one of the plurality of channels. In certain aspects of the present disclosure, another apparatus receiving the frame may determine the plurality of channels based on the first information, compute a time duration based on the second information, and avoid transmitting on the plurality of channels for at least the computed time duration (e.g., to avoid collision).

Abstract: Certain aspects of the present disclosure provide an apparatus for wireless communications. The apparatus comprises an interface configured to receive a plurality of channel estimation sequences, wherein each one of the plurality of channel estimation sequences is received on a respective one of a plurality of channels, each one of the plurality of channels having a respective one of a plurality of frequency bands. The apparatus also comprises a processing system configured to generate a channel estimation for each one of the plurality of channels using the respective one of the plurality of channel estimation sequences, and to generate a collective channel estimation based on the channel estimations.

Abstract: Disclosed is an apparatus for wireless communications. The apparatus includes a processing system configured to generate a single-channel frame, a bonded channel frame, or a MIMO channel frame. Each of the frame types includes a first portion and a second portion, said first portion being decodable by a first device operating according to a first protocol, said second portion not being decodable by the first device, wherein the first and second portions are decodable by a second device operating according to a second protocol; and an interface configured to output the frame for transmission. The second portion includes a first field including frequency-domain PRBS data for AGC, a second field including a time-domain sequence for timing of input sample window for FFT processing, and a third field including frequency-domain pilots for channel estimation. For MIMO, these fields for different transmit chains are transmitted in a time aligned manner.

Abstract: Systems and methods are provided for estimating non-linearity of a transmitter, a receiver or both based on measurements and/or feedback. The estimation of the non-linearity may be used at the transmitter, the receiver or both to tune one or more components to reduce non-linearity. In one aspect, a method for wireless communications comprises generating at least one training signal, and outputting the at least one training signal for transmission to a wireless node. The method also comprises receiving a feedback message from the wireless node, the feedback message providing feedback of the at least one training signal received at the wireless node. The method further comprises tuning at least one component based on the feedback message.

Abstract: Disclosed embodiments facilitate wireless channel calibration, ranging, and direction finding, between networked devices. A method on a first station (STA) may comprise: broadcasting, at a first time, a first NDPA frame to a plurality of second STAs. The first NDPA frame may include a first bit indicating that one or more subsequent frames comprise ranging or angular information. After a Short Interval Frame Space (SIFS) time interval from the first time, a second frame may be broadcast. The second frame may be a Null Data Packet (NDP) frame. In response, a plurality of Compressed Beamforming (CBF) frames may be received at the first STA where each CBF frame may be received from a distinct corresponding second STA, and may include Channel Feedback Information field with information pertaining to communication channel between the first STA and the corresponding second STA. The communications may be encoded using Orthogonal Frequency Division Multiple Access.

Abstract: Disclosed embodiments facilitate wireless channel calibration, including ranging and direction finding, between wirelessly networked devices. In some embodiments. a method on a first station (STA) may comprise: transmitting a first NDPA frame to one or more second stations (STAs), the first NDPA frame comprising a first bit indicating that one or more subsequent frames comprise ranging or angular information; and transmitting, after a Short Interval Frame Space (SIFS) time interval, a second frame. The second frame may be one of: a Null Data Packet az (NDP_az) frame with information about a time of transmission of the NDP_az frame, or a Null Data Packet (NDP) frame, or a Beam Refinement Protocol (BRP) frame. The first NDPA frame may be unicast, multicast, or broadcast.

Abstract: In certain aspects of the present disclosure an apparatus for wireless communication comprises a processing system and an interface. The processing system is configured to generate a preamble and a first data portion of a frame, wherein the preamble includes information for receiving the frame at a device, receive a message from the device, wherein the message provides feedback of reception of the first data portion by the device, and generate a second data portion of the frame. The interface is configure to output the preamble and the first data portion of the frame for transmission to the device, and output the second data portion of the frame for transmission to the device, wherein transmission of the first and second data portions of the frame are separated in time by a gap, and the message is received within the gap.

Abstract: A technique is disclosed for reducing interference in a communication system including a plurality of wireless devices. A first device transmits an RTS-TRN frame including a Request to Send (RTS) portion and a first beam training sequence to determine whether a communication medium is available to communicate with a second device. If the communication medium is available, the second device transmits a CTS-TRN frame including a Clear to Send (CTS) portion and a second beam training sequence. One or more neighboring devices that receive the RTS-TRN frame and/or the CTS-TRN frame configure their respective antennas to generate one or more nulls aimed at the first and second devices when transmitting signals, as long as the first and second devices are communicating based on a duration field in the RTS-TRN frame and/or CTS-TRN frame. This reduces interference at the first and/or second devices.

Abstract: A technique is disclosed for reducing interference in a communication system including a plurality of wireless devices. A first device transmits an RTS-TRN frame including a Request to Send (RTS) portion and a first beam training sequence to determine whether a communication medium is available to communicate with a second device. If the communication medium is available, the second device transmits a CTS-TRN frame including a Clear to Send (CTS) portion and a second beam training sequence. One or more neighboring devices that receive the RTS-TRN frame and/or the CTS-TRN frame configure their respective antennas to generate one or more nulls aimed at the first and second devices when transmitting signals, as long as the first and second devices are communicating based on a duration field in the RTS-TRN frame and/or CTS-TRN frame. This reduces interference at the first and/or second devices.

Abstract: Apparatus for generating a header of a transmit frame, and for processing the header of a received frame. The header generating includes encoding header data bits to generate parity bits, repeating the header bits M times, repeating the parity bits N times, encoding the M repetitions of the header bits, encoding the N repetitions of the parity bits, combining the encoded M repetitions of the header bits with the N repetitions of the parity bits, and modulating the combined sequence to generate the header of the frame. The header processing includes demodulating the header to generate a sequence of bits, splitting the sequence into separate header and parity sequences, decoding the header and parity sequences to generate M header and N parity sequences, combining the M header sequences, combining the N parity sequences, and decoding the combined header sequences using the combined parity sequences to generate header data bits.

Abstract: Methods for wireless communication and system therefrom are provided. According to aspects, a method includes generating a plurality of training packets for transmission, and outputting each of the plurality of training packets for transmission to a device in a different one of a plurality of directions, wherein at least two of the plurality of training packets are output for transmission to the device in at least two of the plurality of directions using orthogonal transmission types. The method also includes obtaining a feedback signal comprising information for identifying at least one of the plurality of directions to be used for wireless communications with the device.

Abstract: Certain aspects of the present disclosure provide a method for wireless communications. The method comprises generating a frame comprising a first portion and a second portion. The method also comprises outputting the first portion of the frame for transmission on at least one channel, shifting a center frequency of the at least one channel, and outputting the second portion of the frame for transmission on the at least one channel after the center frequency shift.

Abstract: Certain aspects of the present disclosure provide an apparatus for wireless communications. The apparatus comprises an interface configured to receive a plurality of channel estimation sequences, wherein each one of the plurality of channel estimation sequences is received on a respective one of a plurality of channels, each one of the plurality of channels having a respective one of a plurality of frequency bands. The apparatus also comprises a processing system configured to generate a channel estimation for each one of the plurality of channels using the respective one of the plurality of channel estimation sequences, and to generate a collective channel estimation based on the channel estimations.

Abstract: Certain aspects of the present disclosure provide an apparatus for wireless communications. The apparatus includes a processing system configured to generate a frame comprising a first channel estimation sequence for transmission via a first channel, a second channel estimation sequence for transmission via a second channel, and at least a first portion of a data payload for transmission via a third channel, wherein the first channel includes a first frequency band, wherein the second channel includes a second frequency band different from the first frequency band, and wherein the third channel includes a third frequency band that overlaps in frequency with the first and second frequency bands; and an interface configured to output the frame for transmission.

Abstract: An apparatus for wireless communications is disclosed. The apparatus includes a processing system configured to generate a frame having a preamble, a header, and a data payload, wherein the preamble, the header, and the data payload are decodable by a first device when operating according to a first protocol, wherein the preamble and the header are decodable by a second device when operating according to a second protocol, the data payload not being decodable by the second device when operating according to the second protocol; and an interface configured to output the frame for transmission.