US 12,267,881 B2
Frame transmission method and device using multiple random backoff operation in broadband wireless communication network
Yong Ho Kim, Incheon (KR); and Yong Su Gwak, Seoul (KR)
Assigned to Hyundai Motor Company, Seoul (KR); Kia Corporation, Seoul (KR); and Korea National University of Transportation Industry—Academic Cooperation Foundation, Chungcheongbuk-do (KR)
Appl. No. 17/610,150
Filed by Hyundai Motor Company, Seoul (KR); Kia Corporation, Seoul (KR); and Korea National University of Transportation Industry—Academic Cooperation Foundation, Chungju-Si (KR)
PCT Filed May 8, 2020, PCT No. PCT/KR2020/006127
§ 371(c)(1), (2) Date Nov. 9, 2021,
PCT Pub. No. WO2020/226462, PCT Pub. Date Nov. 12, 2020.
Claims priority of application No. 10-2019-0054559 (KR), filed on May 9, 2019.
Prior Publication US 2022/0225406 A1, Jul. 14, 2022
Int. Cl. H04W 74/0833 (2024.01); H04L 1/1607 (2023.01); H04W 72/0446 (2023.01); H04W 74/08 (2009.01)
CPC H04W 74/085 (2013.01) [H04L 1/1621 (2013.01); H04W 72/0446 (2013.01); H04W 74/0866 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An operation method of a communication node in a wireless communication network, the operation method comprising:
selecting a first random backoff counter value for a first random backoff operation, and selecting a second random backoff counter value for a second random backoff operation;
performing the first random backoff operation on a first link during a first period according to the first random backoff counter value, and performing the second random backoff operation on a second link during a second period according to the second random backoff counter value;
in response to determining not to transmit a first frame based on a remaining counter value of the second random backoff operation being less than a threshold when the first random backoff operation is completed, performing a monitoring operation on the first link while performing the second random backoff operation; and
in response to determining that the first link is in an idle state as a result of the monitoring operation, and that the second random backoff operation is completed, transmitting the first frame on the first link and a second frame on the second link, respectively, from a completion time point of the second random backoff operation.