公开(公告)号：US20130294397A1

公开(公告)日：2013-11-07

申请号：US13996782

申请日：2011-12-22

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

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

IPC: H04B7/06

CPC classification number: H04W28/0247 ,  H04B7/0413 ,  H04B7/063 ,  H04L1/0025 ,  H04L1/0027 ,  H04W72/0413 ,  H04W72/0446 ,  H04W72/0466 ,  H04W84/12

Abstract: A method of transmitting modulation and coding scheme (MCS) feedback (MFB) in a wireless local area network system is provided. The method is performed by a first station and includes receiving, from a second station, a physical layer convergence procedure(PLCP) protocol data unit(PPDU), estimating a MFB based on the PPDU and transmitting, to the second station, C feedback information including a MFB field and a MFB type field. The MFB field includes the MFB and the MFB type field indicates whether or not the MFB is in response to a MFB request(MRQ) of the second station.

Abstract translation: 提供了一种在无线局域网系统中发送调制和编码方案（MCS）反馈（MFB）的方法。 该方法由第一站执行，包括从第二站接收物理层收敛过程（PLCP）协议数据单元（PPDU），基于PPDU估计MFB并向第二站发送C反馈信息 包括MFB字段和MFB类型字段。 MFB字段包括MFB，并且MFB类型字段指示MFB是否响应于第二站的MFB请求（MRQ）。

公开(公告)号：US20120257574A1

公开(公告)日：2012-10-11

申请号：US13515266

申请日：2010-08-18

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 ,  H04W84/12

CPC classification number: H04W72/082 ,  H04W28/04 ,  H04W48/16 ,  H04W72/046 ,  H04W84/12 ,  H04W88/08

Abstract: An interference avoidance method performed by an Access Point (AP) in a WLAN system in an Overlapping Basic Service Set (OBSS) environment is provided. The interference avoidance method includes receiving an interference avoidance request message from the first STA, the interference avoidance request message informing that frame transmission of the AP acts as interference with a first STA; transmitting an interference avoidance response message in response to the interference avoidance request message; obtaining first channel information about a first channel between the first STA and the AP from the first STA which has received the interference avoidance response message; determining a transmitting steering matrix based on the first channel information; and transmitting data to a second STA by performing beamforming according to the transmitting steering matrix.

Abstract translation: 提供了一种由重叠基础服务集（OBSS）环境中的WLAN系统中的接入点（AP）执行的干扰避免方法。 干扰避免方法包括从第一STA接收干扰避免请求消息，通知AP的帧传输作为与第一STA的干扰的干扰避免请求消息; 响应于所述干扰避免请求消息发送干扰避免响应消息; 从已经接收到干扰避免响应消息的第一STA获取关于第一STA和AP之间的第一信道的第一信道信息; 基于所述第一信道信息确定发射导向矩阵; 以及通过根据发射导向矩阵执行波束成形来将数据发送到第二STA。

公开(公告)号：US20120224570A1

公开(公告)日：2012-09-06

申请号：US13499473

申请日：2010-10-01

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

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

IPC: H04W84/12 ,  H04B7/26

CPC classification number: H04W16/14 ,  H04L5/0023 ,  H04L5/0048 ,  H04L27/2613 ,  H04W84/12

Abstract: A method of transmitting data in a WLAN system using a transmission frequency band including a plurality of frequency blocks includes generating a transmission information field, including at least one of information for timing acquisition of a frame, channel estimation information, and information for demodulation and decoding of the data, generating a plurality of transformed transmission information fields by multiplying the transmission information field by a transform sequence, and transmitting the plurality of transformed transmission information fields through the plurality of respective frequency blocks. The transform sequence comprises a plurality of transform values, and the plurality of transformed transmission information fields is generated by multiplying transmission information field by each of a plurality of transform values.

Abstract translation: 使用包括多个频率块的发送频带在WLAN系统中发送数据的方法包括生成包括用于帧的定时获取的信息，信道估计信息和解调和解码信息中的至少一个的发送信息字段 通过将发送信息字段乘以变换序列来生成多个经变换的发送信息字段，并通过多个各个频率块发送多个经变换的发送信息字段。 变换序列包括多个变换值，并且通过将发送信息字段乘以多个变换值中的每一个来生成多个经变换的发送信息字段。

公开(公告)号：US20120218982A1

公开(公告)日：2012-08-30

申请号：US13505388

申请日：2011-06-30

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

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

IPC: H04W84/02

CPC classification number: H04L1/0009 ,  H04B7/0413 ,  H04B7/0452 ,  H04L1/0003 ,  H04L1/0031 ,  H04L1/0057 ,  H04L1/0059 ,  H04L1/0075 ,  H04L1/06 ,  H04L5/0048 ,  H04L25/0226 ,  H04L27/2602 ,  H04W84/12

Abstract: A method of transmitting a multiple input multiple output (MIMO) packet by a transmitter in a wireless local area network (WLAN) system is provided. The method includes: generating a MIMO packet including at least one spatial stream set transmitted respectively to at least one receiver, wherein each spatial stream set is encoded on the basis of one of two encoding schemes; transmitting first control information including a MIMO indicator and a first modulation and coding scheme (MCS) field, wherein the MIMO indicator indicates whether the MIMO packet is for single user (SU)-MIMO or multi user (MU)-MIMO, and the first MCS field indicates an MCS used for the MIMO packet if the MIMO packet is for SU-MIMO transmission, and indicates an encoding scheme applied for each of the spatial stream sets if the MIMO packet is for MU-MIMO transmission; and transmitting the MIMO packet to at least one receiver.

Abstract translation: 提供了一种在无线局域网（WLAN）系统中由发射机发送多输入多输出（MIMO）分组的方法。 该方法包括：产生包括分别发送给至少一个接收机的至少一个空间流集合的MIMO分组，其中每个空间流集合基于两种编码方案之一进行编码; 发送包括MIMO指示符和第一调制和编码方案（MCS）字段的第一控制信息，其中所述MIMO指示符指示所述MIMO分组是针对单用户（SU）-MIMO还是多用户（MU）-MIMO，并且所述第一 如果MIMO分组用于SU-MIMO传输，则MCS字段指示用于MIMO分组的MCS，并且如果MIMO分组用于MU-MIMO传输，则指示针对每个空间流集合应用的编码方案; 以及将MIMO分组发送到至少一个接收机。

公开(公告)号：US20120213204A1

公开(公告)日：2012-08-23

申请号：US13505387

申请日：2011-04-13

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

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

IPC: H04W36/08 ,  H04W84/12

CPC classification number: H04W72/0453 ,  H04W40/02 ,  H04W72/02 ,  H04W72/04 ,  H04W72/0406 ,  H04W76/10 ,  H04W84/12 ,  H04W88/08

Abstract: A communication method in a wireless local area network (WLAN) system is provided. The communication method includes: configuring, by a first access point (AP), a first basic service set (BSS) which uses a first primary channel (P-CH) and a first secondary channel (S-CH); and configuring, by a second AP, a second BSS which uses a second P-CH, a second S-CH, a second tertiary channel (T-CH), and a second quaternary channel (Q-CH), wherein a band of the first P-CH overlaps with a band of the second P-CH, and the second P-CH is a common channel which is used in an operation of a member station of the second BSS.

Abstract translation: 提供了一种无线局域网（WLAN）系统中的通信方法。 通信方法包括：通过第一接入点（AP）配置使用第一主信道（P-CH）和第一辅助信道（S-CH）的第一基本业务集合（BSS）; 以及通过第二AP配置使用第二P-CH，第二S-CH，第二三通道（T-CH）和第二四通道（Q-CH）的第二BSS，其中， 第一P-CH与第二P-CH的频带重叠，第二P-CH是在第二BSS的成员站的操作中使用的公共信道。

公开(公告)号：US20120127940A1

公开(公告)日：2012-05-24

申请号：US13320709

申请日：2010-09-08

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

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

IPC: H04W72/04

CPC classification number: H04B7/0452 ,  H04B7/0671 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0053 ,  H04L25/0226 ,  H04L25/03343 ,  H04W84/12

Abstract: There is provided a method of transmitting control information in a Wireless Local Area Network (WLAN) system, comprising transmitting first control information by means of cyclic shift delay diversity beam-forming and transmitting second control information. The first control information comprises information necessary for each of a plurality of target stations of the second control information to receive the second control information. The second control information beamformed and transmitted to the plurality of target stations.

Abstract translation: 提供了一种在无线局域网（WLAN）系统中发送控制信息的方法，包括：通过循环移位延迟分集波束形成和发送第二控制信息来发送第一控制信息。 第一控制信息包括用于接收第二控制信息的第二控制信息的多个目标站中的每一个所需的信息。 第二控制信息波束形成并发送到多个目标站。

公开(公告)号：US20120051351A1

公开(公告)日：2012-03-01

申请号：US13264340

申请日：2011-06-30

Applicant: Dae Won Lee ,  Yong Ho Seok

Inventor： Dae Won Lee ,  Yong Ho Seok

IPC: H04W92/00

CPC classification number: H04W48/20 ,  H04B7/0452 ,  H04W28/0205 ,  H04W84/12

Abstract: A method of transmitting management information in wireless local area network system is provided, The method includes transmitting, to a station, a frame including a BSS load information element, the BSS load element including a multi user (MU) multiple input multiple output (MIMO) capable STA count field and a spatial stream utility field, wherein the MUMIMO capable STA count field indicates the total number of STAs with MU reception capability currently associated with the candidate BSS and the Spatial Stream Utility field indicates under utilized spatial streams for busy time of wireless medium.

Abstract translation: 提供一种在无线局域网系统中发送管理信息的方法，该方法包括向站发送包括BSS负载信息单元的帧，包括多用户（MU）多输入多输出（MIMO）的BSS负载单元 ）能力的STA计数字段和空间流实用程序字段，其中具有MUMIMO功能的STA计数字段指示具有当前与候选BSS相关联的MU接收能力的STA的总数，并且空间流实用程序字段指示用于忙时间的所使用的空闲流 无线媒体。

公开(公告)号：US20110194542A1

公开(公告)日：2011-08-11

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: H04W84/02

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。

公开(公告)号：US20110142020A1

公开(公告)日：2011-06-16

申请号：US12965635

申请日：2010-12-10

Applicant: Byeong Woo KANG ,  Dong Wook Roh ,  Yong Ho Seok ,  Yu Jin Noh ,  Bong Hoe Kim ,  Dae Won Lee

Inventor： Byeong Woo KANG ,  Dong Wook Roh ,  Yong Ho Seok ,  Yu Jin Noh ,  Bong Hoe Kim ,  Dae Won Lee

IPC: H04W40/00

CPC classification number: H04L5/0048 ,  H04L27/2628 ,  H04W84/12 ,  H04W99/00

Abstract: A method of transmitting a training signal in a Wireless Local Area Network (WLAN) system includes generating one or more first training signals for a first destination station and one or more second training signals for a second destination station by applying a mapping matrix P to a training signal generation sequence, mapping the first training signals and the second training signals to a plurality of antennas according to an antenna mapping matrix, and performing Inverse Fast Fourier Transform (IFFT) on each of the first training signals and the second training signals mapped to the plurality of antennas and transmitting the training signals through the plurality of antennas.

Abstract translation: 在无线局域网（WLAN）系统中发送训练信号的方法包括：通过将映射矩阵P应用于第一目的地站，生成用于第一目的地站的一个或多个第一训练信号和用于第二目的地站的一个或多个第二训练信号 训练信号生成序列，根据天线映射矩阵将第一训练信号和第二训练信号映射到多个天线，并对第一训练信号和第二训练信号中的每一个进行反傅里叶逆变换（IFFT），映射到 多个天线，并通过多个天线发送训练信号。

公开(公告)号：US09397737B2

公开(公告)日：2016-07-19

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: H04W48/08 ,  H04B7/04 ,  H04W52/34 ,  H04W84/12 ,  H04L5/00 ,  H04L25/02 ,  H04W4/06 ,  H04W8/26 ,  H04W24/00 ,  H04W88/08

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）。