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EP-4738973-A1 - METHOD AND APPARATUS FOR PERFORMING CHANNEL ACCESS PROCEDURE IN WIRELESS LAN SYSTEM

EP4738973A1EP 4738973 A1EP4738973 A1EP 4738973A1EP-4738973-A1

Abstract

A method and an apparatus for communicating in a wireless LAN System are disclosed. A method performed by an STA in a wireless local area network (WLAN) System, according to one embodiment of the present disclosure, comprises the steps of receiving, from an access point (AP), first information related to whether channel access is allowed on the basis of a first back-off count related to an artificial intelligence (AI) model; and on the basis of the first information indicating that channel access is allowed on the basis of the first back-off count, performing channel access on the basis of at least one of the first back-off count or a second back-off count, wherein, on the basis of a second back-off count value reaching zero earlier than the first back-off count, the second back-off count is ignored, and the channel access may be performed by means of the first back-off count.

Inventors

  • PARK, EUNSUNG
  • CHOI, JINSOO

Assignees

  • LG Electronics Inc.

Dates

Publication Date
20260506
Application Date
20240524

Claims (14)

  1. A method performed by a station (STA) in a wireless local area network (WLAN) system, the method comprising: receiving, from an access point (AP), first information related to whether channel access is allowed based on a first back-off count associated with an artificial intelligence (AI) model; and performing channel access based on at least one of the first back-off count or a second back-off count, based on the first information indicating that channel access is allowed based on the first back-off count, wherein, based on a value of the second backoff count reaching 0 before the first backoff count, the second backoff count is ignored and the channel access is performed by the first backoff count.
  2. The method of claim 1, wherein: information related to the first backoff count is output by inputting at least one of information on a channel on which the channel access is to be performed or information about the STA into the AI model.
  3. The method of claim 1, wherein: a countdown for channel access of each of the first backoff count and the second backoff count starts simultaneously.
  4. The method of claim 1, wherein: based on the information indicating that channel access is not allowed based on the first backoff count being received from the AP while a countdown of the first backoff count is in progress, the channel access according to the second backoff count is performed by the STA.
  5. The method of claim 1, wherein: based on a value of the first backoff count reaching 0 before the second backoff count, a value of the second backoff count is maintained and the channel access according to the first backoff count is performed by the STA.
  6. The method of claim 1, wherein: based on a value of the first backoff count reaching 0 before the second backoff count, a value of the second backoff count is set to a random value and the channel access according to the first backoff count is performed by the STA.
  7. The method of claim 1, wherein: based on a value of the first backoff count reaching 0 before the second backoff count, the channel access according to the first backoff count is performed by the STA, and the first backoff count value is set to a value output to the AI model.
  8. The method of claim 1, wherein: the first information is transmitted from the STA to the AP via a beacon frame.
  9. The method of claim 1, wherein: capability information related to whether the first backoff count is supported is transmitted from the STA to the AP.
  10. A station (STA) device in a wireless local area network (WLAN) system, the STA comprising: at least one transceiver; and at least one processor connected to the at least one transceiver, wherein the at least one processor is configured to: receive, from an access point (AP) through the at least one transceiver, first information related to whether channel access is allowed based on a first back-off count associated with an artificial intelligence (AI) model; and perform channel access based on at least one of the first back-off count or a second back-off count, based on the first information indicating that channel access is allowed based on the first back-off count, wherein, based on a value of the second backoff count reaching 0 before the first backoff count, the second backoff count is ignored and the channel access is performed by the first backoff count.
  11. A method performed by an access point (AP) in a wireless LAN system, the method comprising: receiving, from a station (STA), capability information related to a first backoff count associated with an artificial intelligence (AI) model; and transmitting, to the STA, first information related to whether channel access is allowed based on the first backoff count associated with the AI model, wherein, based on a value of the second backoff count reaching 0 before the first backoff count, the second backoff count is ignored and the channel access is performed by the first backoff count.
  12. An access point (AP) performed in a wireless LAN system, the AP comprising: at least one transceiver; and at least one processor connected to the at least one transceiver, wherein the at least one processor is configured to: receive, from a station (STA) through the at least one transceiver, capability information related to a first backoff count associated with an artificial intelligence (AI) model; and transmit, to the STA through the at least one transceiver, first information related to whether channel access is allowed based on the first backoff count associated with the AI model, wherein, based on a value of the second backoff count reaching 0 before the first backoff count, the second backoff count is ignored and the channel access is performed by the first backoff count.
  13. A processing device configured to control a station (STA) in a wireless local area network (WLAN) system, the processing device comprising: at least one processor; and at least one computer memory operatively connected to the one or more processors and storing instructions that, when executed by the at least one processor, perform a method according to any one of claims 1 to 9.
  14. At least one non-transitory computer-readable medium storing one or more commands, wherein the one or more commands are executed by one or more processors to control a device in a wireless LAN system to perform a method according to any one of claims 1 to 9.

Description

[Technical Field] The present disclosure relates to a method and apparatus for performing a backoff count procedure for channel access in a wireless local area network (WLAN) system. [Background] New technologies for improving transmission rates, increasing bandwidth, improving reliability, reducing errors, and reducing latency have been introduced for a wireless LAN (WLAN). Among WLAN technologies, an Institute of Electrical and Electronics Engineers (IEEE) 802.11 series standard may be referred to as Wi-Fi. For example, technologies recently introduced to WLAN include enhancements for Very High-Throughput (VHT) of the 802.11ac standard, and enhancements for High Efficiency (HE) of the IEEE 802.11ax standard. In order to provide a more advanced wireless communication environment, improved technologies for Extremely High Throughput (EHT) are being discussed. For example, technologies for MIMO and multiple access point (AP) coordination that support increased bandwidth, efficient utilization of multiple bands, and increased spatial streams are being studied, and in particular, various technologies are being studied to support low latency or real-time traffic. Furthermore, new technologies are being discussed to support ultra high reliability (UHR), including improvements or extensions of EHT technologies. [Disclosure] [Technical Problem] The technical problem of the present disclosure is to provide a device and method for performing a backoff count procedure for channel access in a wireless LAN system. The technical problem of the present disclosure is to provide a device and method for performing channel access using a backoff count set/defined based on artificial intelligence (Al)/machine learning (ML). The technical objects to be achieved by the present disclosure are not limited to the above-described technical objects, and other technical objects which are not described herein will be clearly understood by those skilled in the pertinent art from the following description. [Technical Solution] According to one embodiment of the present disclosure, a method performed by a station (STA) in a wireless local area network (WLAN) system may include receiving, from an access point (AP), first information related to whether channel access is allowed based on a first back-off count associated with an artificial intelligence (AI) model; and performing channel access based on at least one of the first back-off count or a second back-off count, based on the first information indicating that channel access is allowed based on the first back-off count, and based on a value of the second backoff count reaching 0 before the first backoff count, the second backoff count may be ignored and the channel access may be performed by the first backoff count. According to one embodiment of the present disclosure, a method performed by an access point (AP) in a wireless LAN system may include receiving, from a station (STA), capability information related to a first backoff count associated with an artificial intelligence (AI) model; and transmitting, to the STA, first information related to whether channel access is allowed based on the first backoff count associated with the AI model, and based on a value of the second backoff count reaching 0 before the first backoff count, the second backoff count may be ignored and the channel access may be performed by the first backoff count. [Technical Effects] According to various embodiments of the present disclosure, a device and method for performing a backoff count procedure for channel access in a wireless LAN system may be provided. According to various embodiments of the present disclosure, a device and method for performing channel access using a backoff count set/defined based on AI/ML may be provided. According to various embodiments of the present disclosure, efficiency may be increased as a channel access procedure using AI/ML is applied. Effects achievable by the present disclosure are not limited to the above-described effects, and other effects which are not described herein may be clearly understood by those skilled in the pertinent art from the following description. [Description of Diagrams] Accompanying drawings included as part of detailed description for understanding the present disclosure provide embodiments of the present disclosure and describe technical features of the present disclosure with detailed description. FIG. 1 illustrates a block configuration diagram of a wireless communication device according to an embodiment of the present disclosure.FIG. 2 is a diagram illustrating an exemplary structure of a WLAN system to which the present disclosure may be applied.FIG. 3 is a diagram for describing a link setup process to which the present disclosure may be applied.FIG. 4 is a diagram for describing a backoff process to which the present disclosure may be applied.FIG. 5 is a diagram for describing a frame transmission operation based on CSMA/CA to which the pr