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 apparatus for multiple user uplink are provided. In one aspect, a method includes receiving, at an access point, ranging information from a plurality of wireless devices. The method further includes determining a timing adjustment, for each of the plurality of wireless devices, based on the ranging information. The method further includes transmitting a timing adjustment message to each wireless device, the timing adjustment message indicating the timing adjustment. The method further includes transmitting a scheduling message instructing the plurality of wireless devices to transmit uplink data at a first reference time corrected by the timing adjustment.
Abstract:
Methods and apparatus for multiple user uplink are provided. In one aspect, a method includes generating, at an access point, an aggregated message. The aggregated message includes a single-user broadcast message and at least one other message. The method further includes transmitting the aggregated message to one or more stations.
Abstract:
Methods, devices, and computer program products for traffic information signaling in a wireless communication network are disclosed. In one aspect, a method of communicating within a wireless communication network is disclosed. The method includes receiving, by a transmitting device, a request for buffer information from an access point. The method further includes generating at least one of a buffer size or a transmission time, the buffer size or the transmission time comprising information indicating an amount of data that the transmitting device has buffered for transmission in a multiple-user packet to the access point. The method further includes transmitting the at least one of the buffer size or the transmission time to the access point. In some aspects, the at least one of the buffer size or the transmission time is transmitted within a Very High Throughput (VHT) control field.
Abstract:
IEEE 802.11 power saving mode (PSM) defines two different power modes under which stations operate: active mode and power save (PS) mode. This disclosure introduces devices, methods, and systems to implement an additional power save with ultra low power (PS-ULP) mode that further reduces power consumption. In one aspect, a method of communicating a power management mode of a station on a wireless network is disclosed. The method includes transmitting by a station a first message on the wireless network, the first message indicating one of at least three power management modes, wherein the indication is communicated in a power management portion of a frame control field of a media access control header. The power management portion comprises more than one bit; and operating the station in a power management state in accordance with the indicated power management mode.
Abstract:
Systems, methods, and apparatus are disclosed for increasing reuse in wireless communications. In one aspect, a method of wireless communication is provided. The method includes receiving a first message from a first device, the first message indicating a transmission of a second message from the first device to a second device. The method further includes receiving a third message from the second device, the third message comprising training information for determining a communication channel at the second device. The method further includes generating a beamformed message based at least in part on the training information such that the beamformed message nulls interference at the second device. The method further includes scheduling a transmission of the beamformed message to a third device concurrent with the transmission of the second message.
Abstract:
Systems and methods of limiting wireless discovery range are described. A method may include determining, at a first device, a discovery range threshold that limits a distance from the first device at which a second device is operative to decode a discovery message. The method may include adjusting a transmission attribute at the first device based on the discovery range threshold. The method may include sending the discovery message in accordance with the adjusted transmission attribute.
Abstract:
Systems and methods for low overhead paging in a wireless communications network are described herein. In some aspects, an apparatus for wireless communication includes a receiver and a processor. The receiver receives a request from a first device. The request indicates a first period of a plurality of periods corresponding to a periodicity for transmitting paging messages. The processor assigns the first device to a group scheduled to receive paging messages at most every first period based on the request and determines a start time for transmitting paging messages to the first device based on schedules for transmitting paging messages to a plurality of other devices. In other aspects, an apparatus for wireless communication includes a processor and memory. The processor derives an information sub-unit from an information unit associated with a paging message, compresses the information sub-unit, and generates a second information unit associated with the method of compression.
Abstract:
An explicit indication is provided regarding whether information was subjected to interference during transmission. For example, a receiver can monitor received packets and determine whether any of data units in a given received packet were subjected to interference during transmission. If so, the receiver can send an indication to the transmitter to inform the transmitter of the interference. This indication enables the transmitter to distinguish between packet loss that occurred as a result of channel fade and packet loss that occurred as a result of interference. Consequently, the transmitter is able to invoke different actions depending on whether the packet loss is due to channel fade or interference.
Abstract:
Systems, methods, and devices for grouping nodes to reduce collisions are described herein. In one aspect, a method for reducing collisions in a wireless communication network is provided. The method includes receiving a packet from a first wireless device, the packet including an indication of a packet loss observed by the first wireless device. The method then determines that a collision occurred based on the indication of a packet loss. The method then assigns at least one wireless device to at least one group, based at least in part on the detected collision.