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Method and apparatus for transmitting data in wireless communication system

  • US 10,454,650 B2
  • Filed: 02/24/2016
  • Issued: 10/22/2019
  • Est. Priority Date: 04/01/2015
  • Status: Active Grant
First Claim
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1. A method for transmitting data performed by a station (STA) in a Wireless LAN (WLAN) system, comprising:

  • receiving a signal from a first STA via a first AP of a first Basic Service Set (BSS) which is a different BSS from a second BSS to which the STA belongs,wherein the received signal comprises Endurable Interference Margin (EIM) information and transmission power information, the EIM information being obtained by using an allowed error margin for a certain modulation and coding rate and received power measured by the first STA, the transmission power information related to a transmission power of the first STA, and proximity link information related to similarity of interference environment between the first AP and the first STA;

    determining whether to apply the EIM information to the first STA based on the proximity link information;

    determining whether to perform dynamic Clear Channel Assessment (CCA) based on the EIM information of the first STA, the transmission power information of the first STA, transmission power of the STA, and received power of the first STA according to the determination using the proximity link information; and

    controlling a CCA level or a transmission power by the determination.

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