公开(公告)号：US09755780B2

公开(公告)日：2017-09-05

申请号：US13885332

申请日：2011-11-14

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

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

IPC分类号： H04L1/00 ,  H04L1/06 ,  H04L1/16

CPC分类号： H04L1/0004 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0031 ,  H04L1/0079 ,  H04L1/0618 ,  H04L1/1685

摘要： 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：US08971303B2

公开(公告)日：2015-03-03

申请号：US13467636

申请日：2012-05-09

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

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

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

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

摘要： 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.

摘要翻译： 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：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：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：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：US09350428B2

公开(公告)日：2016-05-24

申请号：US13991158

申请日：2011-12-01

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

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

IPC分类号： H04W24/10 ,  H04B7/04 ,  H04L1/16 ,  H04L1/00

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：US08942214B2

公开(公告)日：2015-01-27

申请号：US13307774

申请日：2011-11-30

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

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

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

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

摘要： A method and wireless apparatus are described, whereby a transceiver receives a null data packet announcement (NDPA) frame from a transmitter to initiate channel sounding, and receives a null data packet (NDP) from the transmitter, the NDP following the NDPA frame. A first report field is configured to include beamforming information, and a second report field is configured to include signal to noise ratio (SNR) information. A determination is made as to whether feedback data including the first report field and the second report field is transmitted in a single feedback frame or a plurality of feedback frames. If the feedback data is determined to be transmitted in the plurality of feedback frames, the feedback data is split into a plurality of segments, which is transmitted in a single aggregated medium access control protocol data unit (A-MPDU) including a plurality of MPDUs.

摘要翻译： 描述了一种方法和无线装置，由此收发机从发射机接收零数据分组通告（NDPA）帧以发起信道探测，并且从发射机接收NDPA之后的NDP的NDPA帧。 第一报告字段被配置为包括波束成形信息，并且第二报告字段被配置为包括信噪比（SNR）信息。 确定在单个反馈帧或多个反馈帧中是否发送包括第一报告字段和第二报告字段的反馈数据。 如果反馈数据被确定为在多个反馈帧中发送，则反馈数据被分割成多个段，其在包括多个MPDU的单个聚合介质访问控制协议数据单元（A-MPDU）中发送 。

公开(公告)号：US20120140753A1

公开(公告)日：2012-06-07

申请号：US13307774

申请日：2011-11-30

申请人： Dae Won LEE ,  Ill Soo Sohn ,  Yong Ho Seok

发明人： Dae Won LEE ,  Ill Soo Sohn ,  Yong Ho Seok

IPC分类号： H04W92/00

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

摘要： 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.

摘要翻译： 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：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：US20130235836A1

公开(公告)日：2013-09-12

申请号：US13885332

申请日：2011-11-14

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

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

IPC分类号： H04L1/00

CPC分类号： H04L1/0004 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0031 ,  H04L1/0079 ,  H04L1/0618 ,  H04L1/1685

摘要： 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.

摘要翻译： 本发明涉及一种在无线局域网（WLAN）系统中确定调制和编码方案（MCS）反馈的方法，包括接收第一帧的MCS反馈（MFB）应答器，包括请求发送 MFB，MFB请求者和MFB响应者向MFB请求者发送MFB，包括推荐的MCS值。 推荐的MCS值是参照表示MFB的类型的非事件型信息，指示数据的传输类型的发送类型信息，表示应用于数据的编码方式的编码类型信息，组 指示要发送数据的一组目标站（STA）的ID以及指示信​​道带宽的MFB带宽信息。