US Patent No. 10,433,337

METHOD FOR TRANSMITTING DATA IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR


Patent No. 10,433,337
Issue Date October 01, 2019
Title Method For Transmitting Data In Wireless Communication System And Apparatus Therefor
Inventorship Hyeyoung Choi, Seoul (KR)
Kiseon Ryu, Seoul (KR)
Jeongki Kim, Seoul (KR)
Hangyu Cho, Seoul (KR)
Suhwook Kim, Seoul (KR)
Assignee LG ELECTRONICS INC., Seoul (KR)

Claim of US Patent No. 10,433,337

1. A method for performing, by a station (STA) apparatus, uplink (UL) multi-user (MU) transmission in a wireless communication system, the method comprising:receiving a trigger frame comprising information for the UL MU transmission and an indicator indicating whether or not to execute carrier sensing,
wherein the method further comprises:
if the indicator indicates executing the carrier sensing, executing the carrier sensing on a specific channel, considering a result of the carrier sensing, and transmitting a UL MU frame in response to the trigger frame; and
if the indicator indicates not executing the carrier sensing, transmitting the UL MU frame in response to the trigger frame without the carrier sensing,
wherein considering the result of the carrier sensing comprises:
if the specific channel is considered idle as a result of considering both a channel clear assessment (CCA) and a network allocation vector (NAV), transmitting the UL MU frame through the specific channel; and
if the specific channel is considered busy as the result of considering both the CCA and the NAV, not transmitting the UL MU frame through the specific channel,
wherein the NAV indicates idle when a NAV count value is nonzero and a non-bandwidth signaling transmitter address (TA) field is same as an address of a transmission opportunity (TXOP) holder, and
wherein the CCA indicates busy when a detected energy level through energy detection exceeds a threshold.