US RE49,983 E1
Channel access method for very high throughput (VHT) wireless local access network system and station supporting the channel access method
Yong Ho Seok, Anyang-si (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Filed by LG Electronics Inc., Seoul (KR)
Filed on Feb. 7, 2020, as Appl. No. 16/785,402.
Application 16/785,402 is a continuation of application No. 15/357,438, filed on Nov. 21, 2016, granted, now 9,788,346, issued on Oct. 10, 2017.
Application 15/357,438 is a continuation of application No. 14/800,425, filed on Jul. 15, 2015, granted, now 9,526,114, issued on Dec. 20, 2016.
Application 14/800,425 is a continuation of application No. 14/579,286, filed on Dec. 22, 2014, granted, now 9,107,222, issued on Aug. 11, 2015.
Application 14/579,286 is a continuation of application No. 12/999,836, granted, now 8,989,158, issued on Mar. 24, 2015, previously published as PCT/KR2009/003264, filed on Jun. 18, 2009.
Application 16/785,402 is a reissue of application No. 15/708,503, filed on Sep. 19, 2017, granted, now 10,499,431, issued on Dec. 3, 2019.
Claims priority of application No. 10-2008-0057246 (KR), filed on Jun. 18, 2008.
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 4/20 (2018.01); H04W 72/0446 (2023.01); H04W 74/00 (2009.01); H04W 74/08 (2009.01); H04W 74/0816 (2024.01)
CPC H04W 74/0816 (2013.01) [H04W 72/0446 (2013.01); H04W 74/006 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method for [ performed by a destination station operating in ] a wireless communication system, the method comprising:
receiving, by a first [ the destination ] station, a plurality of request to send (RTS) frames from a second [ source ] station through a plurality of subchannels, each of the plurality of RTS frames being received through a corresponding one of the plurality of subchannels, each of the plurality of subchannels having a 20 megahertz (MHz) bandwidth;
[ determining a plurality of idle subchannels based on the plurality of subchannels; ]
transmitting, by the first [ destination ] station [ to the source station] , at least one [ a plurality of ] clear to send (CTS) frame [ frames ] in response to at least one of the plurality of RTS frames to the second station, through at least one idle subchannel of the plurality of subchannels, each of the at least one CTS frame being transmitted through a corresponding one of the at least one [ plurality of ] idle subchannel [ subchannels] ; and
receiving, by the first [ destination ] station, a data frame from the second [ source ] station after [ based on ] transmitting the at least one [ plurality of ] CTS frame [ frames] ,
wherein each of the at least one [ plurality of ] CTS frame includes [ frames comprises ] channel information related to [ indicative of ] the at least one [ plurality of ] idle subchannel through which the at least one CTS frame is transmitted by [ subchannels as being available for ] the first [ source ] station , and [ to transmit ] the data frame is received through the at least one idle subchannel indicated by the channel information, and
wherein a number of the at least one [ plurality of ] idle subchannel [ subchannels ] through which the at least one [ plurality of ] CTS frame is [ frames are ] transmitted is equal to or less than a number of the plurality of subchannels through which the plurality of RTS frames are received.