US 12,035,362 B2
Wireless communication method using OFDMA random access and wireless communication terminal using same
Geonjung Ko, Gyeonggi-do (KR); Juhyung Son, Gyeonggi-do (KR); Woojin Ahn, Gyeonggi-do (KR); and Jinsam Kwak, 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 Jul. 7, 2023, as Appl. No. 18/219,644.
Application 18/219,644 is a continuation of application No. 17/742,406, filed on May 12, 2022, granted, now 11,765,768.
Application 17/742,406 is a continuation of application No. 17/127,008, filed on Dec. 18, 2020, granted, now 11,368,987, issued on Jun. 21, 2022.
Application 17/127,008 is a continuation of application No. 16/693,203, filed on Nov. 22, 2019, granted, now 10,904,927, issued on Jan. 26, 2021.
Application 16/693,203 is a continuation of application No. 16/452,448, filed on Jun. 25, 2019, granted, now 10,536,979, issued on Jan. 14, 2020.
Application 16/452,448 is a continuation of application No. PCT/KR2017/015535, filed on Dec. 27, 2017.
Claims priority of application No. 10-2016-0179781 (KR), filed on Dec. 27, 2016; application No. 10-2017-0000020 (KR), filed on Jan. 2, 2017; application No. 10-2017-0000437 (KR), filed on Jan. 2, 2017; application No. 10-2017-0002195 (KR), filed on Jan. 6, 2017; and application No. 10-2017-0002720 (KR), filed on Jan. 9, 2017.
Prior Publication US 2023/0354414 A1, Nov. 2, 2023
Int. Cl. H04W 74/08 (2009.01); H04L 1/00 (2006.01); H04L 1/16 (2023.01); H04L 5/00 (2006.01); H04L 27/26 (2006.01); H04W 28/06 (2009.01); H04W 72/0446 (2023.01); H04W 72/51 (2023.01); H04W 74/00 (2009.01); H04W 74/0833 (2024.01); H04W 84/12 (2009.01)
CPC H04W 74/08 (2013.01) [H04L 1/00 (2013.01); H04L 1/16 (2013.01); H04L 5/0007 (2013.01); H04L 27/2602 (2013.01); H04L 27/2603 (2021.01); H04L 27/2666 (2013.01); H04W 28/06 (2013.01); H04W 72/0446 (2013.01); H04W 72/51 (2023.01); H04W 74/00 (2013.01); H04W 74/0858 (2013.01); H04W 84/12 (2013.01); H04L 5/0048 (2013.01); H04L 27/26025 (2021.01)] 15 Claims
OG exemplary drawing
 
1. A wireless communication terminal that wirelessly communicates with a base wireless communication terminal, the wireless communication terminal comprising:
a transceiver; and
a processor,
wherein the processor is configured to:
set an integer selected from a range of 0 to a value equal to or smaller than an OFDMA Contention Window (OCW) as a counter for random access,
receive a trigger frame for triggering random access using one or more resource units (RUs) allocated for the random access from the base wireless communication terminal using the transceiver, wherein the trigger frame indicates the one or more RUs allocated for the random access by using a predetermined value for an AID12 field of a user info field in the trigger frame,
decrement a value of the counter based on the one or more RUs allocated for the random access and a capability of the wireless communication terminal,
randomly select any one of RUs through which the wireless communication terminal is capable of transmitting a trigger based (TB) PPDU according to the capability of the wireless communication terminal among the one or more RUs allocated for the random access when the value of the counter is 0 or reaches 0, and
attempt transmission to the base wireless communication terminal using the selected RU,
wherein the RU is a group of a plurality of subcarriers usable for uplink transmission and downlink transmission.