Abstract: Certain aspects of the present disclosure generally relate to techniques and apparatus for determining a primary channel for wireless communication. According to certain aspects, a method is provided for wireless communications by an apparatus. The method generally includes obtaining an information element (IE) with one or more parameters and computing a primary channel location to be used for the wireless communication, as a function of the one or more parameters, wherein the function is independent of a geographical area in which the apparatus is located.

Abstract: Systems and methods of clear channel assessment on a wireless network are disclosed. In one aspect, a method includes determining a clear channel assessment (CCA) threshold based on a first transmission bandwidth, performing a first back-off procedure based on the determined clear channel assessment threshold; and transmitting a first wireless message in response to a completion of the first back-off procedure.

Abstract: One aspect disclosed is a method in a wireless communications system including a first primary channel having a first frequency spectrum bandwidth and a second primary channel having a second frequency spectrum bandwidth, wherein the second frequency spectrum bandwidth includes the first frequency spectrum bandwidth. The method includes performing a first and a second back-off procedure at least partially in parallel, the first back-off procedure based on whether the first primary channel is idle, and the second back-off procedure based on whether the second primary channel is idle, and transmitting a wireless message based on whether the first or the second back-off procedure completes first.

Abstract: Methods and systems disclosed provide for clear channel assessment of first and second communication channels. In one aspect, a first primary channel has a first frequency spectrum bandwidth and a second primary channel has a second frequency spectrum bandwidth including the first frequency spectrum bandwidth. A method may include performing a first back-off procedure based on whether the first primary channel is idle if a transmission bandwidth for a wireless message is the first frequency spectrum bandwidth, performing a second back-off procedure based on whether the second primary channel is idle if the transmission bandwidth for the wireless message is greater than the first frequency spectrum bandwidth, and transmitting the wireless message based on a completion of the performed back off procedure.

Abstract: Certain aspects of the present disclosure provide methods and apparatus for detecting ongoing transmissions and assessing channel state, based on midpacket detection. One example method generally includes receiving signals on a primary channel; detecting, based on the received signals, occurrence or non-occurrence of a first ongoing packet transmission on a primary channel; and generating at least one of a busy signal or an idle signal based on the detection. In this manner, collisions may be avoided.

Abstract: Systems and methods for determining primary channel availability are disclosed. One aspect is a method in a wireless communications system including a first primary channel having first and second frequency spectrum bandwidths. The second frequency spectrum bandwidth includes the first frequency spectrum bandwidth. The method includes determining whether a first preamble has been detected on the second primary channel during a first threshold period of time, determining whether a second preamble has been detected on the first primary channel during a second threshold period of time, determining whether a guard interval has been detected on the second primary channel during a third threshold period of time, determining whether the second primary channel is idle based at least in part on detection of the first preamble, the second preamble and the guard interval, and transmitting a wireless message based at least in part on whether the second primary channel is idle.

Abstract: Systems and methods for channel-dependent CCA thresholds to balance different use cases in wireless networks are disclosed. In one aspect a device includes a receiver configured to receive transmissions on a plurality of channels. The device also includes a processor configured to determine whether a channel is one at least a first type or a second type of channel. If the channel is the first type, the processor is configured to determine whether the channel is available based at least in part on a set of first clear channel assessment thresholds. If the channel is the second type, the processor is configured to determine whether the channel is available based at least in part on a set of second clear channel assessment thresholds, where the set of second clear channel assessment thresholds is greater than or equal to the set of first clear channel assessment thresholds.

Abstract: Methods and systems disclosed provide for clear channel assessment of first and second communication channels. In one aspect, a first primary channel has a first frequency spectrum bandwidth and a second primary channel has a second frequency spectrum bandwidth including the first frequency spectrum bandwidth. A method may include performing a first back-off procedure based on whether the first primary channel is idle if a transmission bandwidth for a wireless message is the first frequency spectrum bandwidth, performing a second back-off procedure based on whether the second primary channel is idle if the transmission bandwidth for the wireless message is greater than the first frequency spectrum bandwidth, and transmitting the wireless message based on a completion of the performed back off procedure.

Abstract: Apparatuses, methods, and devices for wireless communication. One aspect of the subject matter described in the disclosure provides a method of selecting one of a plurality of antennas. The method includes receiving, at a first antenna, a first training field of a training frame. The method further includes receiving, at a second antenna, a second training field of the training frame. The method further includes selecting one of the first and second antennas based on at least one training field.

Abstract: Certain aspects of the present disclosure generally relate to techniques and apparatus for determining a primary channel for wireless communication. According to certain aspects, a method is provided for wireless communications by an apparatus. The method generally includes obtaining an information element (IE) with one or more parameters and computing a primary channel location to be used for the wireless communication, as a function of the one or more parameters, wherein the function is independent of a geographical area in which the apparatus is located.

Abstract: Certain aspects of the present disclosure provide methods and apparatus for detecting ongoing transmissions and assessing channel state, based on midpacket detection. One example method generally includes receiving signals on a primary channel; detecting, based on the received signals, occurrence or non-occurrence of a first ongoing packet transmission on a primary channel; and generating at least one of a busy signal or an idle signal based on the detection. In this manner, collisions may be avoided.

Abstract: Systems, methods, and devices for simplified beamforming are provided. In one aspect, a plurality of signals from a signal transmitter are received over a wireless network on one or more receive antennas. One or more phase differences are then determined that maximize a signal to noise ratio of the plurality of received signals. Data representing the one or more phase differences is then transmitted to the signal transmitter.

Abstract: Systems and methods of clear channel assessment on a wireless network are disclosed. In one aspect, a method includes determining a clear channel assessment (CCA) threshold based on a first transmission bandwidth, performing a first back-off procedure based on the determined clear channel assessment threshold; and transmitting a first wireless message in response to a completion of the first back-off procedure.

Abstract: One aspect disclosed is a method in a wireless communications system including a first primary channel having a first frequency spectrum bandwidth and a second primary channel having a second frequency spectrum bandwidth, wherein the second frequency spectrum bandwidth includes the first frequency spectrum bandwidth. The method includes performing a first and a second back-off procedure at least partially in parallel, the first back-off procedure based on whether the first primary channel is idle, and the second back-off procedure based on whether the second primary channel is idle, and transmitting a wireless message based on whether the first or the second back-off procedure completes first.

Abstract: Systems and methods for determining primary channel availability are disclosed. One aspect is a method in a wireless communications system including a first primary channel having first and second frequency spectrum bandwidths. The second frequency spectrum bandwidth includes the first frequency spectrum bandwidth. The method includes determining whether a first preamble has been detected on the second primary channel during a first threshold period of time, determining whether a second preamble has been detected on the first primary channel during a second threshold period of time, determining whether a guard interval has been detected on the second primary channel during a third threshold period of time, determining whether the second primary channel is idle based at least in part on detection of the first preamble, the second preamble and the guard interval, and transmitting a wireless message based at least in part on whether the second primary channel is idle.

Abstract: Systems and methods for channel-dependent CCA thresholds to balance different use cases in wireless networks are disclosed. In one aspect a device includes a receiver configured to receive transmissions on a plurality of channels. The device also includes a processor configured to determine whether a channel is one at least a first type or a second type of channel. If the channel is the first type, the processor is configured to determine whether the channel is available based at least in part on a set of first clear channel assessment thresholds. If the channel is the second type, the processor is configured to determine whether the channel is available based at least in part on a set of second clear channel assessment thresholds, where the set of second clear channel assessment thresholds is greater than or equal to the set of first clear channel assessment thresholds.

Abstract: Apparatuses, methods, and devices for wireless communication. One aspect of the subject matter described in the disclosure provides a method of selecting one of a plurality of antennas. The method includes receiving, at a first antenna, a first training field of a training frame. The method further includes receiving, at a second antenna, a second training field of the training frame. The method further includes selecting one of the first and second antennas based on at least one training field.

Abstract: Systems, methods, and devices for simplified beamforming are provided. In one aspect, a plurality of signals from a signal transmitter are received over a wireless network on one or more receive antennas. One or more phase differences are then determined that maximize a signal to noise ratio of the plurality of received signals. Data representing the one or more phase differences is then transmitted to the signal transmitter.