US 11,716,759 B2
Wireless communication terminal and wireless communication method for multiuser EDCA operation
Woojin Ahn, Gyeonggi-do (KR); 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. 25, 2021, as Appl. No. 17/185,940.
Application 17/185,940 is a continuation of application No. 16/361,283, filed on Mar. 22, 2019, granted, now 10,966,251.
Application 16/361,283 is a continuation of application No. PCT/KR2017/010529, filed on Sep. 25, 2017.
Claims priority of application No. 10-2016-0122488 (KR), filed on Sep. 23, 2016; and application No. 10-2017-0020966 (KR), filed on Feb. 16, 2017.
Prior Publication US 2021/0185731 A1, Jun. 17, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 74/08 (2009.01); H04W 84/12 (2009.01); H04W 74/00 (2009.01); H04B 7/0452 (2017.01)
CPC H04W 74/0816 (2013.01) [H04B 7/0452 (2013.01); H04W 74/002 (2013.01); H04W 84/12 (2013.01); H04W 74/085 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A wireless communication terminal, the terminal comprising:
a communication unit; and
a processor configured to control transmission and reception of a wireless signal through the communication unit,
wherein the processor is configured to:
receive a first frame including at least one of an enhanced distributed channel access (EDCA) parameter set and a multi-user (MU) EDCA parameter set,
wherein the MU EDCA parameter set includes a first update count subfield indicating whether MU EDCA parameters of the MU EDCA parameter set are changed,
transmit a frame including operation mode indication (OMI) information,
update EDCA parameters for channel access according to a parameter set selected among the EDCA parameter set or the MU EDCA parameter set based on a value of the first update count subfield, and
perform the channel access based on the updated EDCA parameters for the channel access,
wherein the EDCA parameters are updated based on the EDCA parameter set or the MU EDCA parameter set after an immediate response to the OMI information is received when the OMI information indicates that the terminal does not participate in an uplink multi-user (MU) operation.