Abstract: A first communication device prompts a plurality of second communication devices to transmit, during a contiguous time period reserved for a range measurement exchange, respective first null data packets (NDPs) at respective times. The first communication device receives first NDPs from at least some of the second communication devices during the contiguous time period, and transmits one or more second NDPs to the plurality of second communication devices. The first communication device uses reception of the first NDPs and transmission of the one or more second NDPs to determine respective ranges between the first communication device and respective second communication devices.

Abstract: A first communication device configured is for communication with one or more second communication devices over a communication channel. The first communication device generates a first bandwidth indication of a first bandwidth of a first channel segment of the communication channel, and generates a second bandwidth indication, separate from the first bandwidth indication, of a second bandwidth of a second channel segment of the communication channel. The first channel segment does not overlap in frequency with the second channel segment. The first communication device generates one or more media access control protocol (MAC) data units to include the first bandwidth indication and the second bandwidth indication, and transmits the one or more MAC data units to the one or more second communication devices to indicate the first bandwidth of the first channel segment and the second bandwidth of the second channel segment to the one or more second communication devices.

Abstract: A first communication device allocates respective frequency sub-channels for subsequent orthogonal frequency division multiple access (OFDMA) communications with two or more second communication devices, including allocating a first frequency sub-channel, a second frequency sub-channel, and a third frequency sub-channel between the first frequency sub-channel and the second frequency sub-channel. The first communication device generates and transmits a first downlink OFDMA data unit configured to prompt the two or more second communication devices to transmit as part of a multi-user transmission that spans the first frequency sub-channel, the second frequency sub-channel, and the third frequency sub-channel. The first communication device receives an uplink OFDMA transmission and determines that the uplink OFDMA transmission did not include a transmission within the third frequency sub-channel.

Abstract: Embodiments described herein provide a mechanism including the configuration and use of the wakeup request (WUR) frame to announce the transmission of a management frame. Specifically, the WUR frame is configured with information indicating whether the incoming management frame includes new BSS operation information, based on which the low power device may determine whether to wake up the 802.11 WLAN receiver to receive the management frame.

Abstract: A method for transmitting a resource request for an uplink (UL) multi-user (MU) transmission is described. A High Throughput (HT) Control field that includes buffer information corresponding to media access control (MAC) protocol data units (MPDUs) that are queued for transmission by a first communication device is generated by the first communication device. The buffer information indicates a number of bytes for the MPDUs that are queued for transmission. A resource request MPDU that includes the HT Control field is generated by the first communication device. The resource request MPDU is transmitted by the first communication device to a second communication device via a wireless communication channel to request an allocation of radio resources for the UL MU transmission by the second communication device.

Abstract: A first communication device receives an uplink orthogonal frequency multiple access (OFDMA) transmission. The uplink OFDMA transmission includes respective transmissions from multiple second communication devices, and the respective transmissions from the multiple second communication devices include indications of respective acknowledgment policies corresponding to the respective transmissions from the multiple second communication devices. The first communication device generates one or more acknowledgment physical layer (PHY) data units to acknowledge at least a portion of the uplink OFDMA transmission, where the one or more acknowledgment PHY data units do not comply with at least one of the acknowledgment policies corresponding to the uplink OFDMA transmission. The first communication device transmits the one or more acknowledgment PHY data units to acknowledge the at least the portion of the uplink OFDMA transmission.

Abstract: A communication device determines whether simultaneous transmissions in a first frequency segment and a second frequency segment are to be synchronized in time. In response determining that simultaneous transmissions in the first frequency segment and the second frequency segment are to be synchronized in time, the communication device transmits a first packet in the first frequency segment beginning at a first time, and transmits a second packet in the second frequency segment beginning at the first time. In response to determining that simultaneous transmissions in the first frequency segment and the second frequency segment are to be unsynchronized in time, the communication device transmits a third packet in the first frequency segment beginning at a second time, and transmits a fourth packet in the second frequency segment beginning at a third time that is different than the second time.

Abstract: In a method for simultaneously communicating with multiple communication devices in a wireless local area network a first communication device receives a plurality of uplink data units simultaneously transmitted by multiple second communication devices. The first communication device generates an acknowledgement data unit to acknowledge receipt of the multiple data units simultaneously transmitted by multiple second communication devices. The acknowledgement data unit includes (i) an indication that indicates that the acknowledgement data unit is intended for multiple second communication devices and (ii) respective acknowledgement information for the multiple second communication devices. The acknowledgement data unit is transmitted from the first communication device to the multiple second communication devices.

Abstract: A first communication device transmits a first physical layer protocol data units (PPDU) that includes a first null data packet announcement (NDPA) frame as part of a first ranging measurement exchange. The first communication device transmits a first null data packet (NDP) as part of the first ranging measurement exchange, and records a transmit time of the first NDP. The first communication device determines whether a second NDP was received correctly from a second communication device as part of the first ranging measurement exchange. In response to determining that the second NDP was not received correctly, the first communication device commences a second ranging measurement exchange, including transmitting a second PPDU that includes a second NDPA frame as part of the second ranging measurement exchange.

Abstract: The present disclosure describes methods and apparatuses for improved target wake time (TWT) operations in wireless networks. In some aspects, an access point transmits a trigger frame to stations of a TWT session during a TWT service period. Responsive to the trigger frame, the access point receives respective uplink frames transmitted by the stations. The access point then transmits a multi-block acknowledgment (M-BA) frame with a per association identifier traffic identifier (per AID TID) field configured to indicate whether one or more of the stations are permitted to enter a low-power state before an end of the TWT service period. By so doing, stations that are typically unable to interpret a more data field of the M-BA frame can determine based on the per AID TID if they are permitted to enter the low-power state and conserve power during a remainder of the TWT service period.

Abstract: A first communication device generates and transmits a first physical layer (PHY) data unit as part of a hybrid automatic repeat request (HARQ) session, the first PHY data unit having a first plurality of media access control (MAC) protocol data units (MPDUs) including a first MPDU. The first communication device determines that a second communication device did not acknowledge successfully receiving the first MPDU. The first communication device generates and transmits a second PHY data unit as part of the HARQ session, the second PHY data unit having a second plurality of MPDUs, the second plurality of MPDUs including the first MPDU.

Abstract: A first access point (AP), which is associated with one or more first client stations, generates an announcement frame that announces a coordinated multi-user (MU) transmission involving multiple APs including the first AP and one or more second APs. Each of the second APs is associated with a respective one or more second client stations. The announcement frame is generated to indicate respective one or more frequency resource units (RUs) allocated to the one or more second APs for the coordinated MU transmission. The first AP transmits the announcement frame to the one or more second APs to initiate the coordinated MU transmission, and participates in the coordinated MU transmission while the one or more second APs also participate in the coordinated MU transmission.

Abstract: A communication device operates according to a communication protocol defines a first set of frequency resource units (RUs) and a second set of frequency RUs. The first set of frequency RUs includes at least a first subset of frequency RUs having a first bandwidth and a second set of RUs having a second bandwidth greater than the first bandwidth, and the second set of frequency RUs omits at least some of the frequency RUs in the first subset of frequency RUs. The communication device determines that a communication channel to be used for an uplink (UL) multi-user (MU) transmission spans a frequency bandwidth greater than 160 MHz, and allocates one or more frequency RUs for the UL MU transmission, including: in response to determining that the communication channel spans the frequency bandwidth greater than 160 MHz, selecting one or more frequency RUs from a second set of frequency RUs.

Abstract: A method for communication over a wireless interface between transceivers that are moving with respect to each other. The method includes transmitting, by a communication station (STA) in a moving vehicle over a wireless channel to a receiver outside the vehicle, a sequence of data symbols encoded in accordance with a frequency-domain multiplexing scheme extending over a range of sub-carrier tones. A condition affecting the wireless channel is evaluated. Responsively to the evaluated condition, a pilot scheme is selected from among a plurality of available pilot schemes, for interleaving of pilot signals in specified sub-carrier tones of the data symbols. An indication of the selected pilot scheme is exchanged between the STA and the receiver. The pilot signals are interleaved in the transmitted data symbols in accordance with the selected pilot scheme.

Abstract: Systems, methods, and other embodiments associated with validating de-authentication requests to prevent spoofing are described. According to one embodiment, an apparatus includes a wireless controller configured to receive a de-authentication request and determine whether the de-authentication request is invalid based on the wireless controller's receipt of two or more responses to a timing request sent by the wireless controller. Only one response is expected. The two or more responses include the address of a first station.

Abstract: A first communication device transmits a first communication frame that includes scheduling information corresponding to a time period in which an uplink multi-user transmission is to occur. The scheduling information indicates a start time of the time period. The first communication frame includes an indication of a group of two or more second communication devices that are to transmit simultaneously during the time period as part of the uplink multi-user transmission. The first communication device transmits a second communication frame during the time period. The second communication frame is configured to trigger at least some second communication device in the group of two or more second communication devices to transmit simultaneously as part of the uplink multi-user transmission. The first communication device receives the uplink multi-user transmission during the time period, the uplink multi-user transmission being responsive to the second communication frame.

Abstract: A first communication device generates a media access control (MAC) frame that includes an indication of a change in a block acknowledgment (BA) session that was previously established between the first communication device and a second communication device. The first communication device transmits the MAC frame to the second communication device. The MAC frame is configured to cause the second communication device to adopt the change in the BA session in response to receiving the MAC frame.

Abstract: An access point generates a trigger frame to trigger an uplink multi-user (MU) transmission by multiple client stations. The access point generates the trigger frame to include a common information field and multiple per-station information fields. The access point generates the common information field to include (i) a subfield that indicates a bandwidth of the uplink MU transmission, and (ii) information that indicates a guard interval and a long training field (LTF) mode to be used by the multiple client stations for the uplink MU transmission, and generates each per-station field to include respective frequency allocation information that indicates respective frequency resources to be used by the respective client station for the uplink MU transmission. The access point transmits the trigger frame to the multiple client stations to trigger the uplink MU transmission by the multiple client stations.

Abstract: A first communication device includes a first timer and a second communication device includes a second timer. The first communication device receives, from the second communication device, a packet that includes a timestamp that corresponds to a least significant portion of the second timer. The first communication device determines whether a most significant bit of a least significant portion of the first timer is different than a most significant bit of the timestamp. At least when the most significant bit of the least significant portion of the first timer is different than the most significant bit of the timestamp: the first communication device determines a mathematical difference between i) the least significant portion of the first timer and ii) the timestamp, and selectively adjusts a most significant portion of the first timer based on the mathematical difference. The first communication device uses the timestamp to set the least significant portion of the first timer.

Abstract: A first communication device transmits a first packet that includes a wakeup request packet configured to prompt a wakeup radio at a second communication device to prompt a network interface device of the second communication device to transition from a low power state to an active state. The first communication device measures a delay period after an end of transmission of the first packet. The delay period corresponds to a time required for the network interface device of the second communication device to transition from the low power state to the active state. After at least the delay period, the first communication device transmits the second packet.