公开(公告)号：US20120327915A1

公开(公告)日：2012-12-27

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： H04W72/04

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.

摘要翻译： 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：US20120106531A1

公开(公告)日：2012-05-03

申请号：US13382522

申请日：2010-07-06

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

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

IPC分类号： H04W84/02

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

摘要： 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.

摘要翻译： 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：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：US20130294397A1

公开(公告)日：2013-11-07

申请号：US13996782

申请日：2011-12-22

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

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

IPC分类号： H04B7/06

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

摘要： 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.

摘要翻译： 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：US09236925B2

公开(公告)日：2016-01-12

申请号：US13996782

申请日：2011-12-22

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

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

IPC分类号： H04W4/00 ,  H04B7/06 ,  H04L1/00

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

摘要： 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, 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.

摘要翻译： 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并向第二站发送反馈信息，所述反馈信息包括 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：US09215571B2

公开(公告)日：2015-12-15

申请号：US14001128

申请日：2012-02-21

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

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

IPC分类号： H04H20/71 ,  H04W4/08 ,  H04B7/04 ,  H04B7/02 ,  H04W84/12

CPC分类号： H04W4/08 ,  H04B7/024 ,  H04B7/0452 ,  H04W84/12

摘要： A method of receiving a multi-user packet by a receiver in a wireless local area network system. The method includes: receiving a first group identifier (ID) management request message from a transmitter, wherein the group ID management request message includes information about at least one group ID which is intended to be allocated to the receiver for multi user-multiple input multiple output (MU-MIMO) transmission, and the information about the at least one group ID indicates each group ID and a spatial stream set position for the each group ID; transmitting a first group ID management response message to the transmitter, wherein the group ID management response message indicates admission or adjustment for allocation of the at least one group ID; and receiving at least one multi-user packet from the transmitter, wherein the multi-user packet is transmitted using MU-MIMO transmission.

摘要翻译： 一种在无线局域网系统中由接收机接收多用户分组的方法。 该方法包括：从发射机接收第一组标识符（ID）管理请求消息，其中，组ID管理请求消息包括关于多个用户多输入多个目的地被分配给接收机的至少一个组ID的信息 输出（MU-MIMO）传输，并且关于至少一个组ID的信息指示每个组ID的每个组ID和空间流设置位置; 向所述发射机发送第一组ID管理响应消息，其中所述组ID管理响应消息指示所述至少一个组ID的分配的准入或调整; 以及从所述发射机接收至少一个多用户分组，其中使用MU-MIMO传输来发送所述多用户分组。

公开(公告)号：US20130208715A1

公开(公告)日：2013-08-15

申请号：US13879794

申请日：2011-10-27

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

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

IPC分类号： H04W76/04

CPC分类号： H04W72/042 ,  H04B7/0413 ,  H04B7/0452 ,  H04B7/0617 ,  H04B7/0697 ,  H04L1/0025 ,  H04L1/0041 ,  H04L2001/0093 ,  H04W52/42 ,  H04W84/12

摘要： A method of transmitting a data frame by a transmitter in a WLAN system is provided. The method includes generating a data block including at least one data units respectively transmitted through at least one or more spatial streams to at least one receiver, transmitting first control information to the at least one receiver, transmitting second control information to each receiver, and transmitting the data block to the at least one receiver. The first control information includes a length indicator for the data block, a MIMO indicator indicating whether the data block is for SU-MIMO or MU-MIMO, and a spatial stream indication field including information about the number of the spatial streams. The second control information includes a FEC coding field indicating an encoding scheme applied to the data unit and an MCS field indicating an MCS applied to the data unit.

公开(公告)号：US20120269183A1

公开(公告)日：2012-10-25

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： H04W24/10 ,  H04W84/12

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：US09107242B2

公开(公告)日：2015-08-11

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： H04B7/00 ,  H04W84/12 ,  H04W74/06

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：US20130329626A1

公开(公告)日：2013-12-12

申请号：US14001128

申请日：2012-02-21

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

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

IPC分类号： H04W4/08

CPC分类号： H04W4/08 ,  H04B7/024 ,  H04B7/0452 ,  H04W84/12

摘要： A method of receiving a multi-user packet by a receiver in a wireless local area network system. The method includes: receiving a first group identifier (ID) management request message from a transmitter, wherein the group ID management request message includes information about at least one group ID which is intended to be allocated to the receiver for multi user-multiple input multiple output (MU-MIMO) transmission, and the information about the at least one group ID indicates each group ID and a spatial stream set position for the each group ID; transmitting a first group ID management response message to the transmitter, wherein the group ID management response message indicates admission or adjustment for allocation of the at least one group ID; and receiving at least one multi-user packet from the transmitter, wherein the multi-user packet is transmitted using MU-MIMO transmission.

摘要翻译： 一种在无线局域网系统中由接收机接收多用户分组的方法。 该方法包括：从发射机接收第一组标识符（ID）管理请求消息，其中，组ID管理请求消息包括关于多个用户多输入多个目的地被分配给接收机的至少一个组ID的信息 输出（MU-MIMO）传输，并且关于至少一个组ID的信息指示每个组ID的每个组ID和空间流设置位置; 向所述发射机发送第一组ID管理响应消息，其中所述组ID管理响应消息指示所述至少一个组ID的分配的准入或调整; 以及从所述发射机接收至少一个多用户分组，其中使用MU-MIMO传输来发送所述多用户分组。