Abstract: Certain aspects of the present disclosure provide methods and apparatus for enhancing a beamforming training procedure. For example, an apparatus can include a processing system that generates a plurality of transmit beamforming refinement frames for a transmit sector sweep that each include a preamble, a data field, at least one beamforming training field, identification of a transmit antenna array to be used for transmitting the at least one beamforming training field, and a status indication of whether the transmit beamforming refinement frame is a last transmit beamforming refinement frame in the transmit sector sweep for one or more receive antenna arrays of a wireless node. The apparatus also includes a first interface that outputs the transmit beamforming refinement frames using a first transmit beamforming sector for the preambles and data fields, and one or more second transmit beamforming sectors for subfields of the beamforming training fields.

Abstract: Certain aspects of the present disclosure provide methods and apparatus for using wide transmit sector level sweep (SLS) sectors.

Abstract: Certain aspects of the present disclosure generally relate to wireless communications and, more particularly, systems and methods for a link margin procedure that accommodates reporting link parameters, such as link margin, for multiple streams.

Abstract: In certain aspects of the present disclosure, a method for wireless communication comprises predistorting a first signal based on a set of coefficients to generate a first predistorted signal, outputting the first predistorted signal for a first transmission to a receiving device, and receiving a first feedback signal from the receiving device, wherein the first feedback signal provides feedback of a first receive signal at the receiving device corresponding to the first transmission. The method also comprises determining whether to store the set of coefficients in a memory based on the received first feedback signal, and storing the set of coefficients in the memory based on the determination.

Abstract: Certain aspects of the present disclosure provide methods and apparatus for enhancing a beamforming training procedure. For example, according to certain aspects, devices may exchange information regarding the number of beamforming transmit sectors each device plans to use for both partial and full sector sweeps, as well as the number of receive antennas. The devices may also exchange timing information used to synchronize when the devices start to perform the partial and full sector sweeps, after detecting a lost link.

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 provide methods and apparatus for enhancing a sector sweep. The apparatus generally includes a processing system configured to generate a first set of frames and a second set of frames. The apparatus also includes a first interface configured to output the first set of frames for transmission to a wireless node via a first set of beams, wherein each beam of the first set is wider in a first dimension than a second dimension, and output the second set of frames for transmission to the wireless node via a second set of beams, wherein each beam of the second set is wider in the second dimension than the first dimension.

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 generally relate to wireless communications and, more particularly, to methods and apparatus for reducing interference from neighboring wireless devices. An exemplary apparatus generally includes a processing system configured to determine an interference sensitivity factor (ISF) based at least in part on one or more interference-related parameters, and generate at least one frame to be output for transmission to a first wireless node via a first link, said at least one frame including the ISF. The apparatus also includes an interface configured to output the at least one frame for transmission to the first wireless node via the first link.

Abstract: Certain aspects of the present disclosure provide methods and apparatus for spatial reuse for neighboring nodes of distribution networks, so they may transmit without causing interference to nodes of the distribution network.

Abstract: Certain aspects of the present disclosure provide methods and apparatus for accommodating immediate response to frames transmitted under time division multiplexed (TDM) access. Certain aspects of the present disclosure also provide methods and apparatus for indicating a frame is transmitted under time division multiplexed (TDM) access.

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for performing beamforming training in multi-antenna wireless devices. For example, an apparatus for wireless communication may include a first interface configured to obtain, from each of a plurality of radio frequency (RF) modules, a first information regarding detection of one or more pilot signals via at least one antenna element at a respective one of the plurality of RF modules. The apparatus may also include a processing system configured to process the first information obtained from the plurality of RF modules to generate second information to synchronize the plurality of RF modules, and a second interface configured to provide the second information to the plurality of RF modules.

Abstract: A method and an apparatus for performing beamforming training using time division duplex (TDD) service periods is provided. An initiator device configures slots assigned to a responder device of an existing TDD schedule for the beamforming training. The initiator device transmits one or more packets to trigger an antenna sweep for one or more sectors of a beamforming antenna of the responder device during a first slot of the multiple slots. The first slot is assigned to the responder device for receiving from the initiator device. The responder device performs the antenna sweep for the one or more sectors of the beamforming antenna of the responder device. The responder device transmits to the initiator device an acknowledgement of the antenna sweep in a second slot of the multiple slots assigned to the responder device. The second slot is assigned to the responder device for transmitting to the initiator device.

Abstract: Various aspects of the disclosure relate to millimeter wave ranging with six degrees of freedom. For example, a multi-gigabyte link (e.g., an IEEE 802.11ad link or an 802.11ay link) and RF/Antenna diversity modules can be used to conduct round trip time (RTT) distance measurements between an anchor point and a station. Relative location information (e.g., degrees of freedom) between the wireless devices can then be determined based on the distance measurements.

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

Abstract: A first apparatus may identify a first set of antenna settings and a second set of antenna settings based on beamforming training with a second apparatus, and the first set of antenna settings may correspond to a first path that is different from a second path with the second apparatus corresponding to the second set of antenna settings. The first apparatus may generate a first request frame including an indication to use the first path for at least one first field of a first measurement frame, and may output the first request frame for transmission to the second apparatus. The first apparatus may obtain, from the second apparatus, a first measurement frame via the first set of antenna settings for reception of at least one first field and via the second set of antenna settings for reception of one or more second fields of the first measurement frame.

Abstract: An apparatus may identify a first set of antenna settings and a second set of antenna settings based on beamforming training with a second apparatus, the first set of antenna settings corresponding to a first path with the second apparatus different from a second path with the second apparatus corresponding to the second set of antenna settings. The apparatus may generate a first frame including an indication to use the first path instead of the second path for at least a portion of a fine timing measurement (FTM) session. The apparatus may transmit the first frame for transmission to the second apparatus. The apparatus may receive, from the second apparatus based on the first set of antenna settings, a plurality of FTM measurement frames associated with the at least the portion of the FTM session.

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 relate to methods and apparatus for performing beamforming training in multi-antenna wireless devices. For example, an apparatus for wireless communication may include a first interface configured to obtain, from each of a plurality of radio frequency (RF) modules, a first information regarding detection of one or more pilot signals via at least one antenna element at a respective one of the plurality of RF modules. The apparatus may also include a processing system configured to process the first information obtained from the plurality of RF modules to generate second information to synchronize the plurality of RF modules, and a second interface configured to provide the second information to the plurality of RF modules.

Abstract: In certain aspects of the present disclosure, a method for wireless communication comprises predistorting a first signal based on a set of coefficients to generate a first predistorted signal, outputting the first predistored signal for a first transmission to a receiving device, and receiving a first feedback signal from the receiving device, wherein the first feedback signal provides feedback of a first receive signal at the receiving device corresponding to the first transmission. The method also comprises determining whether to store the set of coefficients in a memory based on the received first feedback signal, and storing the set of coefficients in the memory based on the determination.