METHOD AND APPARATUS FOR ACCESSING CHANNELS IN WIRELESS LAN SYSTEM
First Claim
1. A method of performing channel access at a station (STA) in a wireless communication system, the method comprising:
- transmitting a power save (PS)-Poll frame to an access point (AP); and
receiving, from the AP, an acknowledgment frame in response to the PS-Poll frame,wherein the acknowledgment frame includes a value of a channel access start offset for the STA.
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Abstract
The present invention relates to a wireless communication system, and more specifically, to a method and apparatus for accessing channels in a wireless LAN system. The method for accessing channels in a station (STA) of the wireless communication system according to one embodiment of the present invention comprises the steps of transmitting a first frame of a channel access request to an access point (AP); and receiving, from the AP, a second frame related to whether access to the channel is allowed in response to the first frame, wherein the second frame can include a value for a channel access start offset with respect to the STA.
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Citations
15 Claims
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1. A method of performing channel access at a station (STA) in a wireless communication system, the method comprising:
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transmitting a power save (PS)-Poll frame to an access point (AP); and receiving, from the AP, an acknowledgment frame in response to the PS-Poll frame, wherein the acknowledgment frame includes a value of a channel access start offset for the STA. - View Dependent Claims (2, 3, 4, 5, 6, 9, 10, 11, 12)
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7. (canceled)
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8. (canceled)
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13. A method of supporting channel access of a station (STA) in an access point (AP) of a wireless communication system, the method comprising:
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receiving a power save (PS)-Poll frame from the STA; and transmitting, to the STA, an acknowledgment frame in response to the first PS-Poll frame, wherein the acknowledgment frame includes a value of a channel access start offset for the STA.
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14. A station (STA) apparatus for performing channel access in a wireless communication system, the STA apparatus comprising:
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a transceiver; and a processor, wherein the processor is configured to transmit a power save (PS)-Poll frame to an access point (AP) and to receive, from the AP, an acknowledgment frame related to whether channel access is granted, in response to the first PS-Poll frame, and wherein the acknowledgment frame includes a value of a channel access start offset for the STA.
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15. An access point (AP) apparatus for supporting channel access of a station (STA) in a wireless communication system, the AP apparatus comprising:
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a transceiver; and a processor, wherein the processor is configured to receive a power save (PS)-Poll frame from the STA and to transmit, to the STA, an acknowledgment frame in response to the PS-Poll frame, and wherein the acknowledgment frame includes a value of a channel access start offset for the STA.
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Specification