Method for sensing channel dynamically in wireless lan system and apparatus therefor
AssigneeLG Electronics Inc.
InventorYongho Seok
Life of this patent
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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 CCA (Clear Channel Assessment) by a station (STA) in a wireless LAN system according to an embodiment of the present invention includes the steps of: receiving by a physical layer (PHY) of the STA a request primitive including a parameter indicating a CCA level type from an upper layer, and determining whether a signal equal to or greater than a prescribed CCA threshold is sensed based on the value of the parameter. Here, the parameter may be set so as to indicate one of a plurality of different CCA level types.
Claims15
A method for performing clear channel assessment (CCA) by a station (STA) in a wireless LAN system, the method comprising:
- receiving, by a physical layer (PHY) of the STA, a request primitive including a parameter indicating a CCA level type from a higher layer, and
- determining whether a signal equal to or greater than a CCA threshold set based on a value of the parameter is sensed,
- wherein the parameter is set to a first CCA level type for transmission of a data unit having a channel width equal to or greater than a first channel width,
- wherein the parameter is set to a second CCA level type for transmission of a data unit having a channel width equal to or greater than a second channel width,
- wherein the second channel width is wider than the first channel width,
- wherein a second CCA threshold set for the second CCA level type is higher than a first CCA threshold set for the first CCA level type.
An STA performing CCA in a wireless LAN system, comprising:
- a physical layer module;
- and
- a higher layer module,
- wherein the physical layer module is configured to receive a request primitive including a parameter indicating a CCA level type from a higher layer and to determine whether a signal equal to or greater than a CCA threshold set based on a value of the parameter is sensed,
- wherein the parameter is set to a first CCA level type for transmission of a data unit having a channel width equal to or greater than a first channel width,
- wherein the parameter is set to a second CCA level type for transmission of a data unit having a channel width equal to or greater than a second channel width,
- wherein the second channel width is wider than the first channel width,
- wherein a second CCA threshold set for the second CCA level type is higher than a first CCA threshold set for the first CCA level type.
Dependencies are inferred from the claim text.