Method and apparatus for accessing channel in WLAN system
AssigneeLG Electronics Inc.
InventorYongho Seok
Life of this patent
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Abstract
The present invention relates to a wireless communication system, and more specifically, disclosed are a method and an apparatus for accessing a channel in a WLAN system. A method for synchronizing channels from a station (STA) in the wireless communication system, according to one embodiment of the present invention, comprises the steps of: receiving from an access point (AP) setting information with respect to an least one slot allowing channel access by the STA; receiving a synchronization frame from the AP from a slot boundary of the at least one slot; and synchronizing the channels on the basis of the synchronization frame, wherein the synchronization frame may be a null data packet (NDP) frame.
Claims13
A method for performing channel synchronization by a station (STA) of a wireless communication system, the method comprising:
- receiving configuration information regarding at least one slot in which channel access of the station (STA) is allowed, from an access point (AP);
- receiving a synchronization frame from the access point (AP) at a slot boundary of the at least one slot;
- and
- performing the channel synchronization on the basis of the synchronization frame,
- wherein the synchronization frame is a null data packet (NDP) frame, which is a Physical Layer Packet Data Unit (PPDU) frame including a Short Training Field (STF), a Long Training Field (LTF) and a signal (SIG) field without inclusion of a data field, and
- wherein the SIG field includes a Basic Service Set Identifier (BSSID) field and a duration field.
A station (STA) device configured to perform channel synchronization in a wireless communication system, comprising:
- a transceiver;
- and
- a processor,
- wherein the processor is configured to:
- receive configuration information regarding at least one slot in which channel access of the station (STA) is allowed, from an access point (AP) using the transceiver,
- receive a synchronization frame from the access point (AP) at a slot boundary of the at least one slot using the transceiver, and
- perform the channel synchronization on the basis of the synchronization frame,
- wherein the synchronization frame is a null data packet (NDP) frame, which is a Physical Layer Packet Data Unit (PPDU) frame including a Short Training Field (STF), a Long Training Field (LTF), and a signal (SIG) field without inclusion of a data field, and
- wherein the SIG field includes a Basic Service Set Identifier (BSSID) field and a duration field.
Dependencies are inferred from the claim text.