Abstract:
The present invention relates to a wireless communication system and, in particular, to a method and apparatus for transmitting/receiving a feedback trigger frame in a wireless LAN system. The method for transmitting a feedback trigger frame by means of a request station (STA) in a wireless communication system according to one embodiment of the present invention includes the steps of: transmitting the feedback trigger frame including an acknowledgement (ACK) indication field to a response STA; and receiving a feedback frame from the response STA, wherein the ACK indication field can be set as a value indicating a first type associated with ACK, a second type associated with block ACK (BA), a third type associated with no ACK, or a fourth type associated with an ACK other than those of the first, second, and third types.
Abstract:
The present invention relates to a wireless communication system, and more specifically to a method and an apparatus for channel access via a null data packet frame in a wireless LAN system. A method for channel access from a station (STA) in a wireless communication system according to one embodiment of the present invention comprises the steps of: receiving, from an access point (AP), configuration information for one or more slots for channel access; receiving a first frame, from the AP, from a particular slot from among the one or more slots; and starting channel access after receiving the first frame, wherein the first frame can be a null data packet (NDP) frame.
Abstract:
A method and apparatus for performing channel access in a WLAN system are disclosed. A method for managing a network allocation vector (NAV) by a station (STA) in a wireless LAN (WLAN) system includes: receiving a Contention Free (CF)-END frame including a duration field; if the CF-END frame is a first-type CF-END frame, resetting the NAV; and if the CF-END frame is a second-type CF-END frame, determining whether to reset the NAV according to a comparison result between a value of the duration field and a NAV value of the STA.
Abstract:
A method and apparatus for maintaining association in a WLAN system are disclosed. The method for performing association by a station (STA) in a wireless LAN (WLAN) system includes: transmitting an association request frame from the station (STA) to an access point (AP); and receiving an association response frame from the access point (AP) in response to the association request frame. If the association request is accepted by the access point (AP), the association response frame includes information regarding an association comeback time.
Abstract:
A method and apparatus for performing a relay operation in a wireless LAN (WLAN) system are disclosed. A method for performing a relay operation by an entity of a wireless LAN (WLAN) system includes: transmitting a frame including information indicating whether the entity is a relay access point (AP) or a root AP to at least one station (STA), wherein, if the entity is the relay AP, the frame further includes a Medium Access Control (MAC) address of the root AP associated with the entity.
Abstract:
Disclosed are a method and a device for transferring data from a wireless LAN to a plurality of stations (STAs). The method for transferring data from a wireless LAN to a plurality of STAs may comprise: a step in which an AP generates a MIMOOFDMA format PPDU; and a step in the AP transfers the MIMO-OFDMA format PPDU to the plurality of STAs, wherein the MIMO-OFDMA format PPDU comprises a plurality of sub-channel format PPDUs which are synchronized in time phase, and the plurality of sub-channel format PPDUs are transferred respectively to the plurality of STAs through a plurality of respective sub-channel bands, and the number of training fields for the MIMO transfer which are included in the respective plurality of subchannel format PPDUs can be the same.
Abstract:
The present invention relates to a wireless communications system, and more particularly to a method for sensing a channel dynamically in a wireless LAN system and an apparatus therefor. A method for performing a back-off in a wireless LAN system according to an embodiment of the present invention includes the steps of performing CCA by applying clear channel assessment conditions in order to transmit a data unit with a different channel width, and performing a back-off based thereon.
Abstract:
The present invention relates to a wireless communication system, and more specifically disclosed are a method and a device for transceiving a frame comprising a partial association identifier (PAID) in the wireless communication system. A method for transmitting the frame in a station (STA) of the wireless communication system according to one embodiment of the present invention comprises a step of transmitting the frame comprising a PAID field, and: if the frame is a frame other than a control frame when the frame is an uplink frame to be transmitted to an access point (AP), the value of the PAID field can be set as a value other than 0, which is calculated on the basis of BSSID (Basic Service Set ID) of the AP; and if the frame is the control frame when the frame is the uplink frame, the value of the PAID field can be set as 0.
Abstract:
A method and an apparatus for channel access in a WLAN system are disclosed. A method by a station (STA) for channel access in a wireless local area network system, the method may comprise: receiving a frame; and determining if a wireless medium is idle using a time interval specified by an Extended Inter-Frame Space (EIFS) before performing a transmission in the wireless medium, wherein the EIFS is set to a dynamic value based on Cyclic Redundancy Code (CRC) status of a SIGNAL-A (SIG-A) field of the received frame.
Abstract:
Disclosed are a method and a device for transmitting data unit in a WLAN. A method for transmitting data unit in a WLAN comprises: a step of an STA generating a PPDU; and a step of the STA transmitting the PPDU to an access point (AP), wherein the PPDU comprises a first field and a second field, wherein the first field is transmitted on the basis of a first and the second field is transmitted on the basis of a second IFFT.