公开(公告)号：US09755780B2

公开(公告)日：2017-09-05

申请号：US13885332

申请日：2011-11-14

Applicant: Dong Wook Roh ,  Ill Soo Sohn ,  Kyoung Young Song ,  Dae Won Lee ,  Yong Ho Seok

Inventor： Dong Wook Roh ,  Ill Soo Sohn ,  Kyoung Young Song ,  Dae Won Lee ,  Yong Ho Seok

IPC: H04L1/00 ,  H04L1/06 ,  H04L1/16

CPC classification number: H04L1/0004 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0031 ,  H04L1/0079 ,  H04L1/0618 ,  H04L1/1685

Abstract: The present invention relates to a method of determining a Modulation and Coding Scheme (MCS) feedback in a Wireless Local Area Network (WLAN) system, including an MCS FeedBack (MFB) responder receiving a first frame, including a request message requesting to send the MFB, from an MFB requester and the MFB responder sending the MFB, including a recommended MCS value, to the MFB requester. The recommended MCS value is derived with reference to at least one of unsolicit type information indicative of a type of the MFB, transmit type information indicative of a transmission type of data, coding type information indicative of a coding scheme applied to the data, a group ID indicative of a group of target stations (STAs) to which the data will be transmitted, and MFB bandwidth information indicative of a bandwidth of a channel.

公开(公告)号：US09363774B2

公开(公告)日：2016-06-07

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: H04J3/00 ,  H04W56/00 ,  H04L5/00 ,  H04L5/16 ,  H04W8/18 ,  H04W48/16 ,  H04W84/12 ,  H04W8/00

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; 基于所述组定义信息，确定属于所述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：US09042484B2

公开(公告)日：2015-05-26

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: H04L5/00 ,  H04W99/00 ,  H04W84/12

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：US08971303B2

公开(公告)日：2015-03-03

申请号：US13467636

申请日：2012-05-09

Applicant: Dae Won Lee ,  Ill Soo Sohn ,  Yong Ho Seok

Inventor： Dae Won Lee ,  Ill Soo Sohn ,  Yong Ho Seok

IPC: H04W4/00 ,  H04B7/06 ,  H04B7/04 ,  H04L5/00 ,  H04W84/12

CPC classification number: H04L5/0053 ,  H04B7/0452 ,  H04B7/0636 ,  H04L1/1812 ,  H04L5/0023 ,  H04W16/28 ,  H04W84/12

Abstract: A channel sounding method in a wireless local area network (WLAN) system is provided. The method, performed by a transmitter, includes transmitting a null data packet announcement (NDPA) frame to a receiver to initiate a channel sounding procedure; transmitting a null data packet (NDP) to the receiver and receiving a feedback frame. The feedback frame includes a plurality of segment frames and a channel feedback report. The channel feedback report is split into a plurality of feedback segments. Each of the plurality of feedback segments is respectively included in each of the plurality of segment frames. The each of the plurality of segment frames includes a first-segment subfield indicating whether the each of the plurality of feedback segment included is a first segment and a remaining-segment subfield indicating the number of remaining feedback segments.

Abstract translation: 提供了一种无线局域网（WLAN）系统中的信道探测方法。 由发射机执行的方法包括向接收机发送空数据分组公告（NDPA）帧以发起信道探测过程; 向接收机发送空数据分组（NDP）并接收反馈帧。 反馈帧包括多个分段帧和信道反馈报告。 信道反馈报告被分成多个反馈段。 多个反馈段中的每一个分别包括在多个段帧中的每一个中。 多个段帧中的每一个包括指示所包括的多个反馈段中的每一个是否为第一段的第一段子字段和指示剩余反馈段的数目的剩余段子字段。

公开(公告)号：US08953498B2

公开(公告)日：2015-02-10

申请号：US13574370

申请日：2010-10-26

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

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

IPC: H04L12/28 ,  H04W48/16 ,  H04W84/12 ,  H04W88/04

CPC classification number: H04W48/16 ,  H04W84/12 ,  H04W88/04

Abstract: Provided are a method and apparatus for scanning of a station in a wireless local area network. The method includes: receiving a probe request frame including probe request relaying information from a probe requesting station (PRSTA) initiating the active scanning, determining whether to discard the probe request frame (PRF) when a frame related to relaying of the PRF is received, determining whether to relay the PRF, and relaying the PRF to an access point if it is determined to relay the PRF, the probe request relaying information including: a transmitter address field indicating an address of a station (STA) transmitting the PRF, and a PRSTA address field indicating an address of the PRSTA, wherein discarding of the PRF is determined by comparing one of the transmitter address field or the PRSTA address field with information included in the frame related to the PRF.

Abstract translation: 提供了一种用于在无线局域网中扫描站的方法和装置。 该方法包括：当接收到与PRF的中继相关的帧时，从发起主动扫描的探测请求站（PRSTA）接收包括探测请求中继信息的探测请求帧，确定是否丢弃探测请求帧（PRF） 确定是否中继PRF，并且如果确定中继PRF，则将PRF中继到接入点，探测请求中继信息包括：指示发送PRF的站（STA）的地址的发射机地址字段，以及 指示PRSTA的地址的PRSTA地址字段，其中通过将发送器地址字段或PRSTA地址字段中的一个与包括在与PRF相关的帧中的信息进行比较来确定PRF的丢弃。

公开(公告)号：US08948017B2

公开(公告)日：2015-02-03

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 ,  H04W48/20 ,  H04W84/12

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 in-formation 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: 提供了一种在无线局域网系统中发送管理信息的方法，所述方法包括向站发送包括BSS负载信息组成单元的帧，所述BSS负载单元包括多用户（MU）多输入多路输出 （MIMO）能力STA计数字段和空间流实用程序字段，其中具有MUMIMO功能的STA计数字段指示当前与候选BSS相关联的具有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的空间流 无线媒体的时间。

公开(公告)号：US08861441B2

公开(公告)日：2014-10-14

申请号：US13603906

申请日：2012-09-05

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

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

IPC: H04W4/00 ,  H04L27/26 ,  H04W80/02 ,  H04L5/00 ,  H04L1/18

CPC classification number: H04L27/2602 ,  H04B7/0413 ,  H04L1/1812 ,  H04L5/0023 ,  H04L5/0091 ,  H04W52/0216 ,  H04W52/0219 ,  H04W52/0241 ,  H04W72/0413 ,  H04W72/042 ,  H04W80/02 ,  H04W84/12 ,  H04W88/08 ,  Y02B70/30 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/22

Abstract: There is provided a method and apparatus for transmitting a frame which is performed by a transmission STA in a WLAN system. The method of transmitting a frame includes generating an MAC Protocol Data Unit (MPDU) to be transmitted to a target station, 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 target station. The PLCP header comprises a partial Association ID (AID) of the target station.

Abstract translation: 提供了一种用于发送由WLAN系统中的传输STA执行的帧的方法和装置。 发送帧的方法包括生成要发送到目标站的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），以及发送 PPDU到目标站。 PLCP报头包括目标站的部分关联ID（AID）。

公开(公告)号：US08787341B2

公开(公告)日：2014-07-22

申请号：US13500352

申请日：2011-11-23

Applicant: Ill Soo Sohn ,  Yong Ho Seok ,  Kyoung Young Song ,  Dae Won Lee ,  Byeong Woo Kang

Inventor： Ill Soo Sohn ,  Yong Ho Seok ,  Kyoung Young Song ,  Dae Won Lee ,  Byeong Woo Kang

IPC: H04W4/00 ,  H04L1/00 ,  H04L1/06

CPC classification number: H04L1/0003 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/0027 ,  H04L1/06 ,  H04W24/10 ,  H04W72/04

Abstract: A method for reporting channel information in a wireless local area network system is provided. The method includes receiving a data block for requesting a modulation and coding scheme (MCS) feedback from a requesting station, the data block including a data field and a stream indicator indicating a number of at least one spatial stream in the data field; determining, the MCS feedback based on the data block; and, transmitting the MCS feedback to the requesting station, the MCS feedback including a recommended MCS and a recommended stream indicator indicating a number of at least one recommended spatial stream. The number of the at least one recommended spatial stream in the MCS feedback is equal or less than the number of the at least one spatial stream in the data block.

Abstract translation: 提供一种在无线局域网系统中报告信道信息的方法。 该方法包括从请求站接收用于请求调制和编码方案（MCS）反馈的数据块，所述数据块包括指示数据字段中的至少一个空间流的数目的数据字段和流指示符; 确定基于数据块的MCS反馈; 并且向所述请求站发送所述MCS反馈，所述MCS反馈包括推荐的MCS和指示至少一个推荐空间流的数量的推荐流指示符。 MCS反馈中的至少一个推荐空间流的数量等于或小于数据块中的至少一个空间流的数量。

公开(公告)号：US08718173B2

公开(公告)日：2014-05-06

申请号：US13520769

申请日：2011-02-09

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

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

IPC: H04B7/02 ,  H04L1/02

CPC classification number: H04L69/323 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/06 ,  H04L27/2626 ,  H04L27/2646 ,  H04L27/2647 ,  H04L27/28 ,  H04W84/12

Abstract: A method and apparatus for transmitting control information in a wireless communication system is provided. The method includes transmitting common control information including a multiple input multiple output (MIMO) indicator indicating single user-MIMO (SU-MIMO) or multi user-MIMO (MU-MIMO) to a receiver, generating first precoded dedicated control information by performing precoding on dedicated control information including information for the MU-MIMO by the use of a first precoding matrix, generating second precoded dedicated control information by performing precoding on the first precoded dedicated control information by the use of a second precoding matrix and transmitting the second precoded dedicated control information to the receiver.

Abstract translation: 提供一种在无线通信系统中发送控制信息的方法和装置。 该方法包括向接收机发送包括指示单用户MIMO（SU-MIMO）或多用户MIMO（MU-MIMO）的多输入多输出（MIMO）指示符的公共控制信息，通过执行预编码产生第一预编码的专用控制信息 通过使用第一预编码矩阵来包括用于MU-MIMO的信息的专用控制信息，通过使用第二预编码矩阵对第一预编码专用控制信息执行预编码来产生第二预编码专用控制信息，并且发送第二预编码专用 控制信息给接收机。

公开(公告)号：US08687583B2

公开(公告)日：2014-04-01

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 ,  H04W72/04

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。