METHOD FOR TRANSMITTING FRAME ON BASIS OF SPATIAL REUSE IN WIRELESS LAN SYSTEM AND WIRELESS TERMINAL USING SAME

• Main Authors: CHOI, Jinsoo, KIM, Jinmin, BANG, Saehee
• Format: Patent
• Language: English
• Published: 12.12.2019
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; WIRELESS COMMUNICATIONS NETWORKS

A method for transmitting a frame on the basis of spatial reuse performed by an SR STA including a plurality of directional antenna modules in a wireless LAN system according to one embodiment of the present invention comprises the steps of: performing a legacy backoff procedure by counting down a first backoff value set on the basis of a set of legacy EDCA parameters in order to transmit an omnidirectional frame, wherein the set of the legacy EDCA parameters includes a legacy CWmin value and a legacy CWmax value corresponding to each of a plurality of ACs; performing an SR backoff procedure by counting down a second backoff value set on the basis of a set of SR EDCA parameters in order to transmit a directional frame when an interference frame that is not intended to be received by an SR STA is received, wherein the set of the SR EDCA parameters includes an SR_CWmax value corresponding to each of the plurality of ACs, and the SR_CWmax value is set to a value smaller than the legacy CWmax value; and transmitting the directional frame when the SR backoff procedure is completed.