Abstract: A network device to function as an Access Point (AP) in a Wireless Local Area Network (WLAN) is provided. The AP is configured to acknowledge a data frame transmitted by a station (STA) in an uplink multi-user physical layer protocol data unit (UL MU PPDU). The AP includes one or more memories, a physical layer (PHY) processor, and a media access controller (MAC) processor. Each processor is coupled to the one or more memories, and is configured to receive the UL MU PPDU, decode an acknowledge (ACK) policy field within a data field of the UL MU PPDU, and determine whether an acknowledgement (ACK) policy indicated in the data field signals an implicit block acknowledgement (BlockAck) request. Responsive to a determination that the ACK policy indication signals an implicit acknowledgement policy, the AP is configured to transmit an ACK or BlockAck frame to the STA in either a single user (SU) or a multi user (MU) manner.

Abstract: An apparatus is provided. The apparatus performs operations including selecting a high efficiency long training field (HE LTF) sequence for a frame, selecting an HE LTF transmission mode from one of a 4× HE LTF mode, a 2× HE LTF mode, and a 1× HE LTF mode, transmitting only a set of allocated subcarriers of the HE LTF sequence for the frame, and transmitting a set of additional fields of the frame using the set of allocated subcarriers and a set of unallocated subcarriers. The set of additional fields includes a legacy short training field (L-STF), a legacy long training field (L-LTF), a legacy signaling field (L-SIG), a high efficiency signaling A field (HE-SIG-A), and a high efficiency short training field (HE-STF). Transmitting of the HE LTF sequence for the frame uses only one or more of the set of allocated subcarriers, and none of the unallocated subcarriers.

Abstract: A method of transmitting a frame is provided by a device in a WLAN. The device sets as additional data subcarriers some of subcarriers which are not set as data subcarriers in at least part of fields included in a frame of a legacy frame format, and allocates information to the additional data subcarriers.

Abstract: A method may include transmitting a downlink frame that is eliciting a response from a plurality of stations, the downlink frame including a first address field, receiving an uplink frame in response to the downlink frame, the uplink frame including a second address field, and receiving the uplink frame on a resource allocated by resource allocation information included in the downlink frame for an uplink multi-user transmission. The second address field is set to a value of the first address field when the downlink frame is of a first type or a value of an address associated with a station (STA) when the downlink frame is of a second type. The AP simultaneously receives uplink frames in response to the first type of downlink frame, where the AP simultaneously receives uplink data frames.

Abstract: A network device functions as a station (STA) in a wireless local area network. The network device includes one or more memories and one or more processors. The one or more processors are configured to receive a physical layer protocol data unit (PPDU) that includes a plurality of aggregated media access control protocol data units (A-MPDUs) through a wireless medium, set a length subfield in a common information field of the trigger frame in a first A-MPDU to a same value as corresponding subfields in common information fields of the trigger frames in each of the other A-MPDUs of the plurality of A-MPDUs. Each of the plurality of A-MPDUs includes a trigger frame to schedule an uplink transmission.

Abstract: In an example of multi-user wireless communications, an access point may send a downlink frame, including a first signaling field and a second signaling field, to multiple stations. The first and second signaling fields are located in a header of the downlink frame. The first signaling field indicates whether the downlink frame is associated with a multi-user (MU) multi-input multi-output (MIMO) transmission. The second signaling field includes an attribute of the MU-MIMO transmission or a non-MU-MIMO transmission. A resource unit of the downlink frame includes a MU-MIMO payload when the downlink frame is associated with the MU-MIMO transmission. A resource unit of the downlink frame includes a non-MU-MIMO payload when the downlink frame is associated with the non-MU-MIMO transmission. The stations may decode one or more portions of the downlink frame based on the attribute in the second signaling field. Other methods, apparatus, and computer-readable media are also disclosed.

Abstract: A method for facilitating communication in a wireless network includes one or more of receiving, by a first wireless device, a first frame that includes a plurality of data units and transmitting, by the first wireless device, a second frame including one or more per-station information fields. Each of the one or more per-station information fields includes a first subfield that is set to a first predetermined value and a second subfield. Each of the plurality of data units is associated with traffic information. The first subfield indicates whether the plurality of data units were received successfully and the first predetermined value indicates successful reception of all of the plurality of data units carried in the first frame that has elicited the second frame. The second subfield indicates whether the plurality of data units were received successfully when they are associated with different types of traffic information.

Abstract: A network device to function as an Access Point (AP) in a Wireless Local Area Network (WLAN) is provided. The AP is configured to acknowledge a data frame transmitted by a station (STA) in an uplink multi-user physical layer protocol data unit (UL MU PPDU). The AP includes one or more memories, a physical layer (PHY) processor, and a media access controller (MAC) processor. Each processor is coupled to the one or more memories, and is configured to receive the UL MU PPDU, decode an acknowledge (ACK) policy field within a data field of the UL MU PPDU, and determine whether an acknowledgement (ACK) policy indicated in the data field signals an implicit block acknowledgement (BlockAck) request. Responsive to a determination that the ACK policy indication signals an implicit acknowledgement policy, the AP is configured to transmit an ACK or BlockAck frame to the STA in either a single user (SU) or a multi user (MU) manner.

Abstract: A network device functions as an access point in a wireless local area network. The network device includes one or more memories and one or more processors. The one or more processors are configured to generate a physical layer protocol data unit (PPDU) that includes a plurality of aggregated media access control protocol data units (A-MPDUs), set a length subfield in a common information field of the trigger frame in a first A-MPDU to a same value as corresponding subfields in common information fields of the trigger frames in each of the other A-MPDUs of the plurality of A-MPDUs, and transmit the PPDU through a wireless medium. Each of the plurality of A-MPDUs includes a trigger frame to schedule an uplink transmission.

Abstract: A wireless device includes one or more memories and one or more processors, configured to cause the wireless device to process a downlink frame including a first address field that is eliciting a response from a plurality of stations, generate an uplink frame including a second address field in response to the downlink frame. The second address field is set to a value of the first address field when the downlink frame is of a first type or a value of an address associated with an access point when the downlink frame is of a second type. The uplink frame is transmitted on a resource allocated by resource allocation information included in the downlink frame for an uplink multi-user transmission. The plurality of stations simultaneously transmits uplink frames in response to the first type of downlink frame and the plurality of stations simultaneously transmits uplink data frames.

Abstract: A method is provided. The method includes processing a first request for buffer status received from an access point (AP) and transmitting, during the first uplink multi-user transmission to the AP and in response to the first request for buffer status, a first uplink null data packet including a signal indicating existence of data to be sent from a station (STA) to the AP. The first request for buffer status schedules a first uplink multi-user transmission indicating a plurality of resources indicating existence of data to be sent to the AP. Transmitting the first uplink null data packet includes the STA transmitting the signal on a first resource of the plurality of resources.

Abstract: A method for radio frequency (RF) combining is provided. The method includes one or more of receiving, by a plurality of stations (STAs), a multicast request-to-send (RTS) frame from an access point (AP), simultaneously transmitting, by the plurality of STAs, a plurality of clear-to-send (CTS) frames to the AP, setting an initial state of a scrambler used to generate the plurality of CTS frames to a state derived from the received multicast RTS frame, receiving, by the plurality of STAs, a multicast data frame from the AP, and simultaneously transmitting, by the plurality of STAs, one or more acknowledge (ACK) frames to the AP.

Abstract: A station includes one or more memories and processors, configured to cause the processors to generate a first frame that includes a plurality of data units, where each of the plurality of data units is associated with traffic information, transmit the first frame to a wireless device in the wireless network, and receive a second frame that includes one or more per-station information fields. Each of the per-station information fields includes a first subfield that is set to a first predetermined value and a second subfield. The first subfield indicates whether the plurality of data units were received successfully and the first predetermined value indicates successful reception of all of the plurality of data units carried in the first frame that has elicited the second frame. The second subfield indicates whether the plurality of data units were received successfully when they are associated with different types of traffic information.

Abstract: A frame transmission method is provided by a device in a wireless communication network. The device generates a signal field including a symbol using a 64 FFT and carrying signaling information, and generates a data field including a symbol using a FFT having a larger size than the 64 FFT and carrying data. The device transmits a frame including the signal field and the data field.

Abstract: A method for a backoff process for uplink (UL) random access is provided. The method may include one or more of receiving, by a station (STA) eligible to participate in a UL MU transmission, a UL trigger frame indicating that one or more anonymous users are eligible to participate in the UL multiuser (MU) transmission, randomly selecting, by the STA, one or more resource units (RUs), and transmitting, by the STA, the UL MU transmission.

Abstract: A wireless device generating a High-Efficiency (HE) PHY Protocol Data Unit (PPDU) for transmission sets a Packet Extension Disambiguity bit of an HE Signal-A (HE-SIG-A) field of the HE PPDU based on respective durations of a packet extension of the HE PPDU and a signal extension of the HE PPDU. The wireless device may determine whether a relationship T P ? E + ( 4 × ? TXTIME - T S ? E - 2 ? 0 4 ? - ( TXTIME - T S ? E - 2 ? 0 ) ) ? T S ? Y ? M is satisfied, where TPE is the duration of the packet extension, TXTIME is a transmission time of the HE PPDU, TSE is the duration of the signal extension, and TSYM is a duration of symbols in a data field of the HE PPDU. The wireless device may set the Packet Extension Disambiguity bit to one when the relationship is satisfied; and to zero when the relationship is not satisfied.

Abstract: A wireless device transmits a frame by determining a plurality of Resource Units (RUs) of the frame, providing pilots in a first RU of the frame at a first set of positions, providing pilots in a second RU of the frame at a second set of positions, and transmitting the frame. The first set of positions is different from the second set of positions. A wireless device receives a frame including an RU including pilots and processes the pilots. When an RU for the data symbol includes an odd-numbered lowest subcarrier, the pilots are included at a first set of positions in the resource unit. When the RU includes an even-numbered lowest subcarrier, the pilots are included at a second set of positions in the resource unit. The second set of positions is different from the first set of positions.

Abstract: A station is provided. The station includes one or more memories and one or more processors. The one or more processors are configured to one or more of process a first request for buffer status received from an access point and transmit, during the first uplink multi-user transmission to the access point and in response to the first request for buffer status, a first uplink null data packet and that includes a signal that indicates existence of data to be sent from the station to the access point. The first request for buffer status schedules a first uplink multi-user transmission and indicates a plurality of resources that indicates existence of data to be sent to the access point. The one or more processors transmits the first uplink null data packet includes the one or more processors configured to transmit the signal on a first resource of the plurality of resources.

Abstract: A wireless device communicates a transmission capability by determining a number of active transmits chains of the wireless device, determining a maximum number of space-time streams according to the number of active transmit chains, providing a frame with an indication of the maximum number of space-time streams, and transmitting the frame. The wireless devices may provide the indication of the maximum number of space-time streams in an Operating Mode field of High Efficiency Aggregate Control field of the frame. The maximum number of space-time streams may be a maximum number of space-time streams that may be used by the wireless device to respond to a Trigger frame.

Abstract: A wireless device initiates an Up-Link Trigger Based Multi-User communication by transmitting a trigger frame. The communication may be an Orthogonal Frequency Division Multiple Access communication. The trigger frame includes allocation information for resources of the communication, including Random Access (RA) allocation information. The trigger frame may also include a padding field after the allocation information. A length of the padding field is determined according to an amount of time needed for a station receiving the trigger frame to process the RA allocation information. The amount of time may correspond to a time between an end of a last RA allocation information and an end of a Physical layer Protocol Data Unit including the trigger frame. The amount of time may be determined according to a maximum processing time of stations associated with the wireless device, or may be determined according to a predetermined interval.