Abstract:
Provided is a method for receiving an uplink PPDU by using a plurality of RUs through a specific band in a wireless LAN system in which a plurality of bands is supported. Transmission of the uplink PPDU is disclosed by a trigger frame and the trigger frame indicates information on an identifier and a frequency resource of each station. In the trigger frame, an index field indicating the RU may be configured with the same size regardless of a bandwidth. To this end, a plurality of index groups is used instead of a method indicating a bitmap field or a start point/offset. A first index group of the index field may be used to indicate a first RU and a second index group of the index field may be used to indicate a second RU.
Abstract:
Disclosed are a method and an apparatus for operating based on a power save mode in a wireless LAN. The method for operating based on the power save mode in a wireless LAN may comprise the steps of: switching an STA from a sleep mode to an active mode after the STA has been switched to a power save mode based on a listen interval, to receive a first beacon frame transmitted by an AP; monitoring a frame for the STA transmitted by the AP until a timer started when the STA is switched to the active mode expires, when the first beacon frame indicates data buffered for the STA; and switching the STA to the sleep mode after the timer expires, wherein the timer can be reset when the frame is transmitted.
Abstract:
A method and apparatus for performing a beamforming training for a multiple input multiple output (MIMO) operation in a wireless local area network is provided. The apparatus assigns at least one of a plurality of sector groups with respect to each of a plurality of array antennas. The apparatus determines a sector used for a data transmission during a sector sweep by transmitting a plurality of sector sweep messages in the plurality of sector groups through the plurality of array antennas to responders simultaneously.
Abstract:
The present document relates to a wireless communication system and, more particularly, to a method for establishing a wireless channel by an AP in a high-density wireless LAN system and to an apparatus therefor. The AP configured for this purpose can establish a primary channel and one or more secondary channels, establish one or more downlink oriented channels into one or more secondary channels, but without the one or more downlink oriented channels overlapping the primary channel of an adjacent basic service set (BSS), and transmit, to a station connected to the AP, the frame including establishment information on the established one or more downlink oriented channels.
Abstract:
A method and a device for transmitting a multiuser uplink in the wireless LAN are disclosed. A method for receiving each uplink frame from a plurality of STAs in the wireless LAN can comprise the steps of: transmitting, by an AP, a downlink PPDU to the plurality of STAs on an overlapping time resource; and receiving, by the AP, each uplink frame from each of the plurality of STAs on an overlapping time resource through each uplink transmission resource with respect to each of the plurality of STAs, as the response to the downlink PPDU.
Abstract:
A method and apparatus for transmitting a multi-user or multi-Station (multi-STA) radio frame including control information in a Wireless Local Area Network (WLAN) system are disclosed. The method includes generating a frame including a signaling field and a data field, and transmitting the generated frame to the plurality of STAs. The signaling field includes a first signaling field (a SIG A field) including control information for frame interpretation and a second signaling field (a SIG B field) including control information individually for each of the plurality of STAs, the second signaling field includes a first block including common control information for the plurality of STAs, and a second block including control information for each of the plurality of STAs.
Abstract:
A method and an apparatus for receiving a downlink frame in a wireless LAN are disclosed. The method and apparatus for receiving a downlink frame in a wireless LAN may comprises the steps of: an STA receiving from an AP a downlink frame via a downlink dedicated channel; and the STA transmitting to the AP a response frame related to the downlink frame via the downlink dedicated channel. The downlink dedicated channel allows transmission only of a contention-free downlink frame by the AP and a response frame by the STA, and restricts transmission of an independent uplink frame by the STA, wherein the independent uplink frame may be an uplink frame other than a response frame among uplink frames that are transmitted from the STA to the AP.
Abstract:
A wireless communication system is disclosed. Disclosed herein are methods for transmitting a physical uplink control channel (PUCCH) signal in a wireless communication system, which includes setting transmit power for the PUCCH signal, and an apparatus thereof. If the PUCCH signal is transmitted on a subframe configured for a scheduling request (SR), the PUCCH signal includes one or more hybrid automatic repeat request acknowledgement (HARQ-ACK) bits and an SR bit. When determining the transmit power for the PUCCH, the SR bit is selectively considered depending on whether or not a transport block for an uplink shared channel (UL-SCH) is present in the subframe.
Abstract:
A method and an apparatus for accessing a channel are disclosed. The method of an STA accessing a channel may comprise the steps of: and STA that is operable in a power-saving mode switching from a sleep state to an active state during a beacon interval; the STA monitoring a channel access parameter frame after being switched to the active state; the STA receiving the channel access parameter frame from an AP, wherein the channel access parameter frame includes EDCA set determining information; and the STA accessing a channel using an EDCA parameter determined on the basis of the EDCA set determining information, wherein the channel access parameter frame can be transmitted at least once between beacon intervals.
Abstract:
Method and device for receiving a data unit are disclosed. A method for receiving a PPDU including a PPDU header and a data field of an STA may comprise the step of: an STA receiving the PPDU header from an AP; the STA determining whether the PPDU transfers a scanning frame on the basis of the PPDU header; and the STA determining whether to decode the data field on the basis of whether to perform a scanning procedure and whether the PPDU transfers the scanning frame.