US 11,722,277 B2
Wireless communication method and wireless communication terminal using training signal
Juhyung Son, Gyeonggi-do (KR); Jinsam Kwak, Gyeonggi-do (KR); and Geonjung Ko, Gyeonggi-do (KR)
Assigned to WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., Gyeonggi-Do (KR); and SK TELECOM CO., LTD., Seoul (KR)
Filed by WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., Gyeonggi-do (KR); and SK TELECOM CO., LTD., Seoul (KR)
Filed on Feb. 11, 2022, as Appl. No. 17/670,348.
Application 17/670,348 is a continuation of application No. 16/844,817, filed on Apr. 9, 2020, granted, now 11,283,570.
Application 16/844,817 is a continuation of application No. 15/719,547, filed on Sep. 29, 2017, granted, now 10,666,405, issued on May 26, 2020.
Application 15/719,547 is a continuation of application No. PCT/KR2016/004131, filed on Apr. 20, 2016.
Claims priority of application No. 10-2015-0055563 (KR), filed on Apr. 20, 2015; and application No. 10-2015-0062726 (KR), filed on May 4, 2015.
Prior Publication US 2022/0166579 A1, May 26, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 5/00 (2006.01); H04W 72/04 (2023.01); H04L 27/26 (2006.01); H04W 72/0446 (2023.01); H04W 72/0453 (2023.01)
CPC H04L 5/0048 (2013.01) [H04L 5/00 (2013.01); H04L 5/0053 (2013.01); H04L 27/26 (2013.01); H04L 27/2613 (2013.01); H04W 72/0446 (2013.01); H04W 72/0453 (2013.01); H04L 27/26132 (2021.01)] 6 Claims
OG exemplary drawing
 
1. A wireless communication terminal comprising:
a transceiver; and
a processor,
wherein the processor is configured to, in uplink (UL) orthogonal frequency division multiple access (OFDMA) transmission:
transmit, by using the transceiver, a first one or more fields through a frequency band to a base wireless communication terminal, wherein a preamble of a physical frame includes the first one or more fields to be transmitted in a unit of 20 MHz through the frequency band and a second one or more fields to be transmitted through a sub-frequency band of the frequency band,
adjust a magnitude of a training signal corresponding to the sub-frequency band based on a number of subcarriers of the training signal corresponding to the sub-frequency band, wherein a plurality of training signals configured to be transmitted through an entire frequency band allocated for the UL OFDMA transmission include the training signal corresponding to the sub-frequency band and a training signal corresponding to a sub-frequency band which is not allocated to any wireless communication terminal,
transmit, by using the transceiver, the second one or more fields through the sub-frequency band to the base wireless communication terminal, wherein the second one or more fields include a field including the training signal corresponding to the sub-frequency band and not including the training signal corresponding to the sub-frequency band which is not allocated to any wireless communication terminal, and
transmit data through the sub-frequency band to the base wireless communication terminal,
wherein the training signal corresponding to the sub-frequency band is configured to be used, by the base wireless communication terminal, for automatic gain control for receiving the data from the wireless communication terminal
wherein the training signal corresponding to the sub-frequency band which is not allocated to any wireless communication terminal is not transmitted by any wireless communication terminal in the UL OFDMA transmission.