公开(公告)号：US20130070658A1

公开(公告)日：2013-03-21

申请号：US13700123

申请日：2011-05-25

Applicant: Yu Jin Noh ,  Dae Won Lee ,  Yong Ho Seok

Inventor： Yu Jin Noh ,  Dae Won Lee ,  Yong Ho Seok

IPC: H04W52/02

CPC classification number: H04B7/0452 ,  H04W4/08 ,  H04W52/0216 ,  H04W52/0235 ,  H04W72/044 ,  H04W84/12 ,  Y02D70/142

Abstract: The present invention relates to a method for operating a power save mode in a wireless LAN system. The method involves transmitting a power save multi-poll (PSMP) frame containing a power save mode (PSM) of a non-access point (AP) station (STA) to a first station and to a second station which are paired with an AP on the basis of multiple input multiple output (MIMO) technology. Information on the PSM contains downlink transmission start offset which indicates the point in time of starting a downlink transmission period, a downlink transmission duration which indicates the duration of the downlink transmission period, and transmission object station identification information. The method further involves transmitting a data frame to the first station and to the second station on the basis of the MIMO technology during the downlink transmission period. The transmission object station identification information indicates a group identifier (group ID) for indicating an object station group including the first station and the second station, which are object stations to which the AP transmits the data frame on the basis of the MIMO technology.

Abstract translation: 本发明涉及一种在无线LAN系统中操作省电模式的方法。 该方法包括将包含非接入点（AP）站（STA）的省电模式（PSM）的省电多轮询（PSMP）帧发送到与AP配对的第一站和第二站 在多输入多输出（MIMO）技术的基础上。 关于PSM的信息包含指示开始下行链路发送期间的时间点的下行链路发送开始偏移，表示下行链路发送期间的持续时间的下行链路发送持续时间，以及发送对象站识别信息。 该方法还包括在下行链路传输周期期间基于MIMO技术将数据帧发送到第一站和第二站。 传输对象站识别信息指示用于指示包括第一站和第二站的目标站组的组标识符（组ID），其是基于MIMO技术的AP发送数据帧的对象站。

公开(公告)号：US20130010664A1

公开(公告)日：2013-01-10

申请号：US13395351

申请日：2011-08-02

Applicant: Byeong Woo Kang ,  Dae Won Lee ,  Yong Ho Seok

Inventor： Byeong Woo Kang ,  Dae Won Lee ,  Yong Ho Seok

IPC: H04W52/02

CPC classification number: H04W52/0235 ,  H04B7/0452 ,  H04L69/323 ,  H04W52/02 ,  H04W52/0212 ,  H04W52/0219 ,  H04W52/0222 ,  H04W74/0808 ,  H04W84/12 ,  Y02D70/142 ,  Y02D70/444

Abstract: A method of power saving in a wireless local area network is provided. The method, performed by a wireless device, includes acquiring TXOP (transmission opportunity) from access point (AP), the TXOP indicating an interval of time when the AP has the right to transmit at least one data block for multi user-multiple input multiple output (MU-MIMO) transmission, receiving a power saving indicator from the AP, the power saving indicator indicating whether the AP allows to enter doze state during the TXOP, and entering the doze state until the end of the TXOP if the power saving indicator indicates an allowance of entering the doze state.

Abstract translation: 提供了一种在无线局域网中省电的方法。 由无线设备执行的该方法包括从接入点（AP）获取TXOP（传输机会），该TXOP指示当AP有权发送用于多用户多输入多个的至少一个数据块的时间间隔 输出（MU-MIMO）传输，从AP接收功率节省指示灯，指示AP是否允许在TXOP期间进入打盹状态的功率节省指示符，并且如果节电指示器进入TXOP结束，则进入打盹状态 表示进入打盹状态的津贴。

公开(公告)号：US20120327915A1

公开(公告)日：2012-12-27

申请号：US13582036

申请日：2011-03-02

Applicant: Byeong Woo Kang ,  Yu Jin Noh ,  Dae Won Lee ,  Yong Ho Seok

Inventor： Byeong Woo Kang ,  Yu Jin Noh ,  Dae Won Lee ,  Yong Ho Seok

IPC: H04W72/04

CPC classification number: H04L5/003 ,  H04B7/0452 ,  H04L1/1861 ,  H04L5/0007 ,  H04L5/001 ,  H04L5/0053 ,  H04W72/0406

Abstract: Provided is a method of receiving a physical layer convergence procedure (PLCP) protocol data unit (PPDU) by an access point (AP) in a wireless local area (LAN) system. The method includes: allocating a first transmission channel bandwidth to a first station (STA) which is multiple input multiple output (MIMO)-paired with the AP; allocating a second transmission channel bandwidth to a second STA which is MIMO-paired with the AP; transmitting to the first STA and the second STA a sync trigger for determining a time point at which the first STA transmits a first PPDU and a time point at which the second STA transmits a second PPDU; and receiving simultaneously the first PPDU and the second PPDU from the first STA and the second STA.

Abstract translation: 提供了一种通过无线局域网（LAN）系统中的接入点（AP）接收物理层汇聚过程（PLCP）协议数据单元（PPDU）的方法。 该方法包括：将第一传输信道带宽分配给与AP一起主导的多输入多输出（MIMO）的第一站（STA）; 向与所述AP配对的第二STA分配第二传输信道带宽; 向所述第一STA和所述第二STA发送用于确定所述第一STA发送第一PPDU的时间点和所述第二STA发送第二PPDU的时间点的同步触发; 以及从第一STA和第二STA同时接收第一PPDU和第二PPDU。

公开(公告)号：US20120327914A1

公开(公告)日：2012-12-27

申请号：US13580097

申请日：2010-11-29

Applicant: Byeong Woo Kang ,  Dae Won Lee ,  Yu Jin Noh ,  Bong Hoe Kim ,  Yong Ho Seok

Inventor： Byeong Woo Kang ,  Dae Won Lee ,  Yu Jin Noh ,  Bong Hoe Kim ,  Yong Ho Seok

IPC: H04W72/04

CPC classification number: H04W56/00 ,  H04L5/0023 ,  H04L5/0053 ,  H04L5/16 ,  H04W8/005 ,  H04W8/186 ,  H04W48/16 ,  H04W84/12

Abstract: Disclosed is a method for allowing a station to transmit a sounding signal in a multiple-antenna wireless communication system, the method including receiving a group defining information about a group to which the station belongs from an access point (AP); determining a transmission time taken in transmitting a sounding signal by the respective stations, which belong to the group, on the basis of the group defining information; and transmitting a sounding signal to the AP in accordance with the transmission time and preset transmission order when receiving a sounding request signal from the AP.

Abstract translation: 公开了一种允许站在多天线无线通信系统中发送探测信号的方法，所述方法包括从接入点（AP）接收定义关于所述站所属的组的信息的组; 基于组定义信息，确定由属于该组的各个站发送探测信号所用的传输时间; 并且当从AP接收到探测请求信号时，根据传输时间和预设的传输顺序，向AP发送探测信号。

公开(公告)号：US20120314673A1

公开(公告)日：2012-12-13

申请号：US13579513

申请日：2011-02-25

Applicant: Yu Jin Noh ,  Dae Won Lee ,  Byeong Woo Kang ,  Bong Hoe Kim ,  Yong Ho Seok

Inventor： Yu Jin Noh ,  Dae Won Lee ,  Byeong Woo Kang ,  Bong Hoe Kim ,  Yong Ho Seok

IPC: H04W72/04

CPC classification number: H04W72/0406 ,  H04B7/0413 ,  H04L5/001 ,  H04L5/0033 ,  H04L5/0044 ,  H04L5/0094 ,  H04L61/6022 ,  H04L69/22 ,  H04L69/323 ,  H04L69/324 ,  H04W28/065 ,  H04W72/04 ,  H04W72/042 ,  H04W72/085 ,  H04W84/12 ,  H04W88/08

Abstract: A method of allocating a channel in a wireless local area network (WLAN) system is provided. The method includes generating a MAC protocol data unit (MPDU) to be transmitted to a target station (STA), generating a PLCP protocol data unit (PPDU) by attaching a physical layer convergence procedure (PLCP) header to the MPDU, and transmitting the PPDU to the STA, wherein the PLCP header includes channel allocation information for transmission of the PPDU.

Abstract translation: 提供了一种在无线局域网（WLAN）系统中分配信道的方法。 该方法包括生成要发送到目标站（STA）的MAC协议数据单元（MPDU），通过将物理层汇聚过程（PLCP）报头附加到MPDU来生成PLCP协议数据单元（PPDU），并发送 PPDU发送到STA，其中PLCP报头包括用于传输PPDU的信道分配信息。

公开(公告)号：US20120275332A1

公开(公告)日：2012-11-01

申请号：US13517951

申请日：2010-11-04

Applicant: Yong Ho Seok ,  Yu Jin Noh ,  Bong Hoe Kim ,  Dae Won Lee

Inventor： Yong Ho Seok ,  Yu Jin Noh ,  Bong Hoe Kim ,  Dae Won Lee

IPC: H04B15/00 ,  H04W24/02 ,  H04W84/12

CPC classification number: H04B7/0452 ,  H04L5/0023 ,  H04L5/0091 ,  H04L25/0204 ,  H04L25/0224 ,  H04W16/28

Abstract: An interference avoidance method performed by an access point (AP) in a wireless local area network (WLAN) system is provided. The method includes: transmitting a training request (TRQ) message for requesting transmission of a sounding frame to a first station which is a target of multi-user multiple input multiple output (MU-MIMO) transmission and a second station which receives data through a direct link during the MU-MIMO transmission; receiving first and second sounding frames respectively transmitted by the first and second stations in response to the TRQ message; estimating a channel by using the first sound frame to determine a beam-forming vector to be used for the MU-MIMO transmission; and performing the MU-MIMO transmission for MU-MIMO transmission target stations including the first station, wherein the beam-forming vector is determined such that the MU-MIMO transmission has a minimum effect on the second station by considering channel information between the AP and the second station and acquired on the basis of the second sounding frame received from the second station.

Abstract translation: 提供了一种由无线局域网（WLAN）系统中的接入点（AP）执行的干扰避免方法。 该方法包括：向作为多用户多输入多输出（MU-MIMO）传输的目标的第一站发送用于请求发送探测帧的训练请求（TRQ）消息，以及通过一个接收数据的第二站 在MU-MIMO传输期间的直接链路; 接收响应于所述TRQ消息由所述第一和第二站分别发送的第一和第二探测帧; 通过使用第一声音帧来估计要用于MU-MIMO传输的波束形成向量的信道; 以及对包括第一站的MU-MIMO传输目标站执行MU-MIMO传输，其中确定波束形成向量，使得MU-MIMO传输对第二站具有最小影响，考虑AP与AP之间的信道信息 第二站，并且基于从第二站接收的第二探测帧获取。

公开(公告)号：US20120106531A1

公开(公告)日：2012-05-03

申请号：US13382522

申请日：2010-07-06

Applicant: Yong Ho Seok ,  Byeong Woo Kang ,  Yu Jin Noh ,  Dae Won Lee

Inventor： Yong Ho Seok ,  Byeong Woo Kang ,  Yu Jin Noh ,  Dae Won Lee

IPC: H04W84/02

CPC classification number: H04B7/0452 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/0226 ,  H04W4/06 ,  H04W8/26 ,  H04W24/00 ,  H04W48/08 ,  H04W52/346 ,  H04W84/12 ,  H04W88/08

Abstract: A method of indicating destination stations, performed by an access point (AP), in a wireless local area network (WLAN) system supporting multi-user multiple input multiple output (MU-MIMO) is provided. The method includes transmitting a sounding request frame to the plurality of destination stations to transmit a sounding frame used for channel estimation between the AP and each destination station, receiving the sounding frame in response to the sounding frame request from each station, and transmitting a first data frame spatially multiplexed with respect to the plurality of destination stations by performing channel estimation on the basis of the sounding frame, wherein the sounding request frame comprises a group identifier (ID) indicating the plurality of destination stations.

Abstract translation: 提供了一种在支持多用户多输入多输出（MU-MIMO）的无线局域网（WLAN）系统中由接入点（AP）指示目的地站的方法。 所述方法包括：向所述多个目的地站发送探测请求帧，以发送在所述AP与每个目的站之间用于信道估计的探测帧，响应于来自每个站的所述探测帧请求接收所述探测帧，以及发送第一 通过基于所述探测帧进行信道估计而相对于所述多个目的站进行空间复用的数据帧，其中所述探测请求帧包括指示所述多个目的地站的组标识符（ID）。

公开(公告)号：US09794032B2

公开(公告)日：2017-10-17

申请号：US13582036

申请日：2011-03-02

Applicant: Byeong Woo Kang ,  Yu Jin Noh ,  Dae Won Lee ,  Yong Ho Seok

Inventor： Byeong Woo Kang ,  Yu Jin Noh ,  Dae Won Lee ,  Yong Ho Seok

IPC: H04W74/00 ,  H04L5/00 ,  H04L1/18 ,  H04W72/04 ,  H04B7/0452

CPC classification number: H04L5/003 ,  H04B7/0452 ,  H04L1/1861 ,  H04L5/0007 ,  H04L5/001 ,  H04L5/0053 ,  H04W72/0406

Abstract: Provided is a method of receiving a physical layer convergence procedure (PLCP) protocol data unit (PPDU) by an access point (AP) in a wireless local area (LAN) system. The method includes: allocating a first transmission channel bandwidth to a first station (STA) which is multiple input multiple output (MIMO)-paired with the AP; allocating a second transmission channel bandwidth to a second STA which is MIMO-paired with the AP; transmitting to the first STA and the second STA a sync trigger for determining a time point at which the first STA transmits a first PPDU and a time point at which the second STA transmits a second PPDU; and receiving simultaneously the first PPDU and the second PPDU from the first STA and the second STA.

公开(公告)号：US09357489B2

公开(公告)日：2016-05-31

申请号：US13991822

申请日：2011-10-27

Applicant: Suh Wook Kim ,  Yong Ho Seok ,  Bong Hoe Kim ,  Dae Won Lee

Inventor： Suh Wook Kim ,  Yong Ho Seok ,  Bong Hoe Kim ,  Dae Won Lee

IPC: H04W52/02 ,  H04W74/04 ,  H04W74/06 ,  H04W28/04 ,  H04L1/16 ,  H04L12/403 ,  H04W8/26 ,  H04W24/00 ,  H04W48/08 ,  H04W84/12

CPC classification number: H04W52/0225 ,  H04W8/26 ,  H04W24/00 ,  H04W48/08 ,  H04W52/0229 ,  H04W74/06 ,  H04W84/12 ,  Y02D70/142 ,  Y02D70/21

Abstract: A method for a power save mode operation in a wireless local area network (WLAN) system is provided. The method includes transmitting, by an access point (AP), a traffic indication map (TIM) element that announces existence of buffered traffic, wherein the TIM element includes an association ID (AID) assigned to a buffered STA having the buffered traffic when the buffered station (STA) is associated with the AP; receiving, by the AP, a poll frame for requesting data frame transmission from a candidate STA, wherein the poll frame contains an AID of the candidate STA and a medium access control (MAC) address which is a unique identifying information of the candidate STA; and determining, by the AP, whether the candidate STA is the buffered STA on the basis of the AID and the MAC address of the candidate STA.

Abstract translation: 提供了一种用于无线局域网（WLAN）系统中的省电模式操作的方法。 该方法包括由接入点（AP）发送通知缓冲业务的存在的业务指示映射（TIM）元素，其中，所述TIM元素包括分配给具有缓冲流量的缓冲STA的关联ID（AID） 缓冲站（STA）与AP相关联; 由AP接收用于从候选STA请求数据帧传输的轮询帧，其中轮询帧包含候选STA的AID和作为候选STA的唯一标识信息的介质访问控制（MAC）地址; 以及基于所述候选STA的AID和MAC地址，由所述AP确定所述候选STA是否为所述缓冲STA。

公开(公告)号：US09271309B2

公开(公告)日：2016-02-23

申请号：US13022754

申请日：2011-02-08

Applicant: Eun Sun Kim ,  Yong Ho Seok ,  Dae Won Lee

Inventor： Eun Sun Kim ,  Yong Ho Seok ,  Dae Won Lee

IPC: H04W72/04 ,  H04W4/00 ,  H04W28/20 ,  H04W28/16 ,  H04W74/08 ,  H04W16/14

CPC classification number: H04W74/0816 ,  H04W16/14 ,  H04W72/0453

Abstract: A method and apparatus of requesting a channel access in a wireless local area network is provided. A transmitter transmits a plurality of Request To Send (RTS) frames over a plurality of requesting channels and receives at least one Clear To Send (CTS) frame over at least one responding channel as a response for the plurality of RTS frames. Each of the plurality of RTS frames indicates a bandwidth for the plurality of requesting channels, and the at least one CTS frame indicates a bandwidth for the at least one responding channel.

Abstract translation: 提供一种在无线局域网中请求信道接入的方法和装置。 发射机通过多个请求信道发送多个请求发送（RTS）帧，并通过至少一个响应信道接收至少一个清除发送（CTS）帧作为多个RTS帧的响应。 所述多个RTS帧中的每一个指示所述多个请求信道的带宽，并且所述至少一个CTS帧指示所述至少一个响应信道的带宽。