公开(公告)号：US20130223427A1

公开(公告)日：2013-08-29

申请号：US13880329

申请日：2011-12-27

申请人： Ill Soo Sohn ,  Yong Ho Seok ,  Jong Hyun Park ,  Dae Won Lee ,  Byeong Woo Kang

发明人： Ill Soo Sohn ,  Yong Ho Seok ,  Jong Hyun Park ,  Dae Won Lee ,  Byeong Woo Kang

IPC分类号： H04W84/12

CPC分类号： H04B7/0478 ,  H04B7/0617 ,  H04L5/0048 ,  H04W74/06 ,  H04W84/12

摘要： A method for a channel sounding in a wireless local area network is provided. The method includes transmitting a null data packet announcement (NDPA) frame, to a plurality of receivers, the NDPA frame requesting a channel statement information feedback and announcing that a null data packet (NDP) frame is to be transmitted; transmitting the NDP frame being a basis of channel estimation for the plurality of receivers; receiving a first feedback frame from a first receiver among the plurality of receivers, transmitting a feedback poll frame to a second receiver; and, receiving a second feedback frame from the second receiver, the second feedback frame including second channel state information estimated by the second receiver. If the first receiver fails to perform the channel estimation, the first feedback frame is a null feedback frame. The null feedback frame is a feedback frame not including channel state information.

摘要翻译： 提供了一种用于无线局域网中的信道探测的方法。 该方法包括向多个接收机发送空数据分组公告（NDPA）帧，NDPA帧请求信道语句信息反馈并通知要发送空数据分组（NDP）帧; 发送作为多个接收机的信道估计的基础的NDP帧; 从所述多个接收机中的第一接收机接收第一反馈帧，向第二接收机发送反馈轮询帧; 以及从所述第二接收机接收第二反馈帧，所述第二反馈帧包括由所述第二接收机估计的第二信道状态信息。 如果第一接收机不能执行信道估计，则第一反馈帧是空反馈帧。 空反馈帧是不包括信道状态信息的反馈帧。

公开(公告)号：US20120281774A1

公开(公告)日：2012-11-08

申请号：US13520769

申请日：2011-02-09

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

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

IPC分类号： H04L27/28 ,  H04W84/12

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

摘要： 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.

摘要翻译： 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：US20120044925A1

公开(公告)日：2012-02-23

申请号：US13318019

申请日：2010-12-03

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

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

IPC分类号： H04W84/12

CPC分类号： 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

摘要： 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 according to the present invention 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.

摘要翻译： 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。 根据本发明的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），通过将物理层会聚过程（PLCP）头部附加到 MPDU，并将PPDU发送到目标站。 PLCP报头包括目标站的部分关联ID（AID）。

公开(公告)号：US09363774B2

公开(公告)日：2016-06-07

申请号：US13580097

申请日：2010-11-29

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

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

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

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

摘要： 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.

摘要翻译： 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：US08861441B2

公开(公告)日：2014-10-14

申请号：US13603906

申请日：2012-09-05

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

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

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

CPC分类号： 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

摘要： 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.

摘要翻译： 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

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

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

IPC分类号： H04W4/00 ,  H04L1/00 ,  H04L1/06

CPC分类号： H04L1/0003 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/0027 ,  H04L1/06 ,  H04W24/10 ,  H04W72/04

摘要： 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.

摘要翻译： 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

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

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

IPC分类号： H04B7/02 ,  H04L1/02

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

摘要： 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.

摘要翻译： 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：US09794032B2

公开(公告)日：2017-10-17

申请号：US13582036

申请日：2011-03-02

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

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

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

CPC分类号： H04L5/003 ,  H04B7/0452 ,  H04L1/1861 ,  H04L5/0007 ,  H04L5/001 ,  H04L5/0053 ,  H04W72/0406

摘要： 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：US20130250904A1

公开(公告)日：2013-09-26

申请号：US13991158

申请日：2011-12-01

申请人： Byeong Woo Kang ,  Illsoo Sohn ,  Dae Won Lee ,  Yong Ho Seok

发明人： Byeong Woo Kang ,  Illsoo Sohn ,  Dae Won Lee ,  Yong Ho Seok

IPC分类号： H04B7/04

CPC分类号： H04W84/12 ,  H04B7/0452 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0031 ,  H04L1/1685

摘要： A method of link adaptation performed by an access point supporting multi user(MU) multiple input multiple output(MIMO) in wireless local area network system is provided. The method includes transmitting, to a first station, a physical layer convergence procedure (PLCP) protocol data unit (PPDU) containing a modulation and coding scheme(MCS) request(MRQ) and receiving, from the first station, a MCS feedback(MFB) in response to the MRQ, wherein the first station is one of destination stations of MU-MIMO transmission performed by the access point, and the MFB includes a recommended MCS value computed, by the first station, on the assumption that the first station, as a member of the destination stations, receives data transmitted over at least one spatial stream allocated to the first station in MU-MIMO transmission.

摘要翻译： 提供了一种由无线局域网系统中支持多用户（MU）多输入多输出（MIMO）的接入点进行的链路自适应的方法。 该方法包括向第一站发送包含调制和编码方案（MCS）请求（MRQ）的物理层汇聚过程（PLCP）协议数据单元（PPDU），并从第一站接收MCS反馈（MFB ），其中所述第一站是由所述接入点执行的MU-MIMO传输的目的地站之一，并且所述MFB包括由所述第一站计算的推荐MCS值，假设所述第一站， 作为目的站的成员，接收通过MU-MIMO传输中分配给第一站的至少一个空间流发送的数据。

公开(公告)号：US20120320856A1

公开(公告)日：2012-12-20

申请号：US13577210

申请日：2011-02-10

申请人： Eun Sun Kim ,  Yong Ho Seok ,  Byeong Woo Kang ,  Dae Won Lee

发明人： Eun Sun Kim ,  Yong Ho Seok ,  Byeong Woo Kang ,  Dae Won Lee

IPC分类号： H04W74/08 ,  H04W72/04

CPC分类号： H04W74/0816 ,  H04W28/26 ,  H04W84/12

摘要： A channel access method and apparatus in a wireless local area network (WLAN) system are provided. A channel access method performed by an originating station in a wireless local area network (WLAN) system using a multi-channel including a plurality of subchannels includes transmitting RTS (Request To Send) frames to a destination station via the plurality of subchannels, respectively, receiving CTS (Clear To Send) frames transmitted by the destination station via the plurality of sub-channels in response to the RTS frames; and transmitting data via the subchannels via which the CTS frames have been received.

摘要翻译： 提供了一种无线局域网（WLAN）系统中的信道接入方法和装置。 由使用包括多个子信道的多信道的无线局域网（WLAN）系统中的始发站执行的信道接入方法包括分别经由多个子信道向目的地站发送RTS（请求发送）帧， 响应于RTS帧，经由多个子信道接收由目的站发送的CTS（清除发送）帧; 以及经由其接收到CTS帧的子信道发送数据。