Abstract:
According to one embodiment of the present invention, a method for performing a channel access by a station (STA) in a wireless communication system comprises the steps of: transmitting a first frame for a channel access request to an access point (AP); and receiving a second frame, which is a response to the channel access request, from the AP, wherein the first frame includes information indicating whether or not uplink data of the STA is present.
Abstract:
The present document relates to a wireless communication system and, more particularly, to a data transmission and reception operation between an AP and an STA in a high density wireless LAN system. To this end, the STA receives a beacon frame including downlink frame transmission interval information from the AP, and receives data from the AP through a time interval corresponding to the downlink frame transmission interval information, wherein the data reception from the AP through the time interval corresponding to the downlink frame transmission interval information is processed at a higher priority than the data transmission toward the AP.
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:
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 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 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.
Abstract:
The present invention discloses a method for changing an association ID in a wireless communication system and an apparatus therefor. Specifically, a method for changing an association identification (AID) of a first station (STA) communicating directly with a second STA in a wireless communication system comprises the steps of: receiving, from an access point (AP), a reassignment response frame containing new AID information to be newly allocated to the first STA; the first STA transmitting an update request frame containing the new AID information to the second STA; and as a response to the update request frame, receiving an update response frame from the second STA.
Abstract:
The present invention relates to a wireless communication system and, more specifically, provides a method for transmitting/receiving a group addressed frame in a WLAN system and a device therefor. The method whereby a station (STA) in a WLAN system receives a group addressed frame according to one embodiment of the present invention may comprise the steps of: transmitting a first frame to an access point (AP); in response to the first frame, receiving from the AP a second frame comprising information related to the group addressed frame for a first STA; and receiving the group addressed frame from the AP on the basis of the information related to the group addressed frame.