US Patent No. 10,560,965

WIRELESS COMMUNICATION METHOD FOR ALLOCATING CLEAR CHANNEL, AND WIRELESS COMMUNICATION TERMINAL USING SAME


Patent No. 10,560,965
Issue Date February 11, 2020
Title Wireless Communication Method For Allocating Clear Channel, And Wireless Communication Terminal Using Same
Inventorship Juhyung Son, Gyeonggi-do (KR)
Jinsam Kwak, Gyeonggi-do (KR)
Geonjung Ko, Gyeonggi-do (KR)
Hyun oh Oh, Gyeonggi-do (KR)
Assignee WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., Gyeonggi-Do (KR) SK TELE...

Claim of US Patent No. 10,560,965

1. A wireless communication terminal comprising:a transceiver; and
a processor,
wherein the processor is configured to:
generate a wireless packet including a first preamble and a second preamble,
sense a channel based on a first threshold before transmitting the generated packet to determine whether the channel is idle, and
transmit, through the transceiver, the generated packet when the channel is determined to be idle,
wherein the first preamble includes L-STF, L-LTF and L-SIG fields, and the second preamble at least includes a repeated L-SIG field,
wherein the repeated L-SIG field has repeated information of the L-SIG field and includes a second subcarrier set for non-legacy terminals in addition to a first subcarrier set for legacy and non-legacy terminals,
wherein when a signal is received on the channel during the sensing the channel and the received signal is determined to be a signal of an overlapping basic service set (OBSS), the processor determines whether the channel is idle based on a second threshold, and
wherein the second threshold is set distinctly, by the terminal, from the first threshold.