Atlas Global Technologies LLC

A method is provided. The method includes one or more of establishing a target wake time (TWT) agreement between an access point (AP) and a station (STA), transmitting, by the AP, a trigger frame comprising a TWT element to the STA, receiving, by the AP, a response frame from the STA indicating a trigger-enabled TWT, wherein a trigger subfield of the TWT element has a value of 1, and scheduling for transmission, by the AP, a trigger frame to the STA within each TWT service period (SP) of the TWT agreement.

The present invention relates to a Physical layer Protocol Data unit (PPDU) format including a padding. According to one aspect of the present invention, a method for transmitting data to a plurality of stations on a transmission channel by an Access Point in a WLAN may be provided. The transmission channel may be divided into a plurality of subchannels allocated to the plurality of stations. The method may include generating a padding having a length individually for each of one or more subchannels to which paddings are applied among the plurality of subchannels, the length of the padding making transmissions end simultaneously on the plurality of subchannels, and transmitting a PPDU frame including a data unit without the padding or a data unit added with the padding for each of the plurality of subchannels to the plurality of stations on the transmission channel.

An access point (AP) is provided. The AP includes a processing device and a memory unit coupled to the processing device The memory unit includes instructions that when executed by the processing device cause the wireless device to determine a first set of stations (STAs) that are capable to receive downlink multi-user multiple input multiple output (DL MU MIMO) transmissions, determine a second set of stations (STAs) that are not capable to receive downlink multi-user multiple input multiple output (DL MU MIMO) transmissions, and transmit a downlink orthogonal frequency division multiple access protocol data unit (DL OFDMA PPDU) to the first set of (STAs) over sub-bands that are capable of DL MU MIMO and to the second set of (STAs) over sub-bands that are not capable of DL MU MIMO. A bandwidth of individual sub-bands are not the same.

The present invention relates to a Physical layer Protocol Data unit (PPDU) format including a padding. According to one aspect of the present invention, a method for transmitting data to a plurality of stations on a transmission channel by an Access Point in a WLAN may be provided. The transmission channel may be divided into a plurality of subchannels allocated to the plurality of stations. The method may include generating padding having a length individually for each of one or more subchannels to which paddings are applied among the plurality of subchannels, the length of the padding making transmissions end simultaneously on the plurality of subchannels, and transmitting a PPDU frame including a data unit without the padding or a data unit added with the padding for each of the plurality of subchannels to the plurality of stations on the transmission channel.

An Access Point (AP) in a Wireless Local Area Network (WLAN) is configured to provide a first Media Access Control (MAC) Protocol Data Unit (MPDU) in a downlink frame, the first MPDU being addressed to a first set of stations and the first MPDU includes first trigger information for scheduling an uplink transmission, provide a second MPDU in the downlink frame, the second MPDU being addressed to a second set of stations and the second MPDU includes second trigger information to schedule the uplink transmission and the second trigger information includes a second set of values that are set to be the same as a first set of values in the first trigger information, the second set of values that are set to be the same as the first set of values includes a value indicative of a combination of guard interval and long training field (LTF) for the uplink transmission, and transmit the downlink frame to the first and second set of stations.

A method is provided. The method includes transmitting, by an access point (AP), a physical layer protocol data unit (PPDU) comprising a plurality of resource units (RUs), each comprising a number of one or more of subcarriers or tones upon which one or more modulated signals are positioned, each of the plurality of RUs sharing a common frequency and mirroring symmetrically or conjugate symmetrically, information between each of the plurality of RUs with respect to a DC tone.

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.

A wireless devices 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.

To receive data in data field of a PHY Protocol Data Unit (PPDU), wherein the data field includes mid-ambles, a number of mid-ambles and a number of data symbols included in the data field is determined. The number of mid-ambles is determined according to information in an HE-SIG-A field of the PPDU, information in an L-SIG field of the PPDU, and one or more predetermined values prescribed by a standard. The number of data symbols may be determined using the number of the mid-ambles, and the data received according to the number of mid-ambles and the number of data symbols.

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.