公开(公告)号：US08416877B2

公开(公告)日：2013-04-09

申请号：US12850713

申请日：2010-08-05

申请人： Hyoung Joo Lee ,  Ill Soo Sohn ,  Kwang Bok Lee ,  Chang Soon Park ,  Sung Jin Kim

发明人： Hyoung Joo Lee ,  Ill Soo Sohn ,  Kwang Bok Lee ,  Chang Soon Park ,  Sung Jin Kim

IPC分类号： H04B7/02

CPC分类号： H04L25/03343 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0634 ,  H04L25/0224

摘要： In a multi-user multiple input multiple output (MIMO) communication system using the same radio resource, a unitary matrix may be generated to remove interference signals and enhance a transmission capacity. The unitary matrix may be used for precoding. Vectors included in the unitary matrix may have a most similar direction to precoding vectors of target terminal devices and may be orthogonal to each other.

摘要翻译： 在使用相同无线电资源的多用户多输入多输出（MIMO）通信系统中，可以生成酉矩阵来去除干扰信号并提高传输容量。 酉矩阵可用于预编码。 包含在酉矩阵中的向量可以具有与目标终端设备的预编码向量最相似的方向，并且可以彼此正交。

公开(公告)号：US20110158335A1

公开(公告)日：2011-06-30

申请号：US12850713

申请日：2010-08-05

申请人： Hyoung Joo LEE ,  Ill Soo Sohn ,  Kwang Bok Lee ,  Chang Soon Park ,  Sung Jin Kim

发明人： Hyoung Joo LEE ,  Ill Soo Sohn ,  Kwang Bok Lee ,  Chang Soon Park ,  Sung Jin Kim

IPC分类号： H04L27/28 ,  H04L27/00

CPC分类号： H04L25/03343 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0634 ,  H04L25/0224

摘要： In a multi-user multiple input multiple output (MIMO) communication system using the same radio resource, a unitary matrix may be generated to remove interference signals and enhance a transmission capacity. The unitary matrix may be used for precoding. Vectors included in the unitary matrix may have a most similar direction to precoding vectors of target terminal devices and may be orthogonal to each other.

摘要翻译： 在使用相同无线电资源的多用户多输入多输出（MIMO）通信系统中，可以生成酉矩阵来去除干扰信号并提高传输容量。 酉矩阵可用于预编码。 包含在酉矩阵中的向量可以具有与目标终端设备的预编码向量最相似的方向，并且可以彼此正交。

公开(公告)号：US08380212B2

公开(公告)日：2013-02-19

申请号：US12404243

申请日：2009-03-13

申请人： Ill Soo Sohn ,  Kwang Bok Lee ,  Chang Soon Park ,  Sung Jin Kim

发明人： Ill Soo Sohn ,  Kwang Bok Lee ,  Chang Soon Park ,  Sung Jin Kim

IPC分类号： H04B7/00 ,  H04W72/00 ,  H04W4/00 ,  H04J11/00 ,  H04K1/10 ,  H04L1/02 ,  H04L27/00

CPC分类号： H04W72/085 ,  H04W72/0406 ,  H04W72/046

摘要： A base station apparatus and method of transmission of dynamic feedback channel information in a MIMO system. The base station apparatus includes a first channel state information receiving unit to receive a first channel state information; a receiving terminal selection unit to select at least one receiving terminal to receive data from among a plurality of terminals; a quantization length determination unit to independently determine a second quantization length of the selected receiving terminal; a quantization length transmission unit to transmit the second quantization length to the selected e receiving terminal; a second channel state information receiving unit to receive second channel state information from the selected receiving terminal; and a data transmission unit to transmit data to the selected receiving terminal using a plurality of transmission antennas of a base station based on the second channel state information.

摘要翻译： 一种在MIMO系统中传输动态反馈信道信息的基站装置和方法。 基站装置包括：第一信道状态信息接收单元，用于接收第一信道状态信息; 接收终端选择单元，用于选择至少一个接收终端从多个终端接收数据; 量化长度确定单元，用于独立地确定所选择的接收终端的第二量化长度; 量化长度传输单元，用于向所选e接收终端发送第二量化长度; 第二信道状态信息接收单元，用于从所选择的接收终端接收第二信道状态信息; 以及数据发送单元，其基于所述第二信道状态信息，使用基站的多个发送天线向所选择的接收终端发送数据。

公开(公告)号：US08467334B2

公开(公告)日：2013-06-18

申请号：US12166724

申请日：2008-07-02

申请人： Ill Soo Sohn ,  Byong Ok Lee ,  Won Mu Lee ,  Kwang Bok Lee ,  Sung Jin Kim ,  Goochul Chung

发明人： Ill Soo Sohn ,  Byong Ok Lee ,  Won Mu Lee ,  Kwang Bok Lee ,  Sung Jin Kim ,  Goochul Chung

IPC分类号： H04W4/00

CPC分类号： H04B7/0632 ,  H04B7/0452 ,  H04B7/0617

摘要： A multiple-input multiple-output (MIMO) communication method and apparatus are provided. A MIMO communication apparatus includes a selected beamforming vector determining unit to determine a selected beamforming vector corresponding to a selected user, a performance information generating unit to generate performance information corresponding to where a non-selected beamforming vector is allocated to a non-selected user, and an additional beamforming vector selecting unit to select an additional beamforming vector corresponding to the non-selected user based on the performance information.

摘要翻译： 提供了多输入多输出（MIMO）通信方法和装置。 MIMO通信装置包括：选择的波束形成向量确定单元，用于确定与所选择的用户对应的所选择的波束形成向量;演奏信息生成单元，用于生成对应于未选择的波束成形向量被分配给未选择的用户的位置的演奏信息; 以及附加的波束形成向量选择单元，用于基于所述性能信息选择与所述未选择的用户相对应的附加波束形成向量。

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：US09609664B2

公开(公告)日：2017-03-28

申请号：US14114487

申请日：2011-11-29

申请人： Jong Hyun Park ,  Yong Ho Seok ,  Ill Soo Sohn ,  Eun Sun Kim ,  Suh Wook Kim

发明人： Jong Hyun Park ,  Yong Ho Seok ,  Ill Soo Sohn ,  Eun Sun Kim ,  Suh Wook Kim

IPC分类号： H04W74/00 ,  H04W12/06 ,  H04W52/36 ,  H04W72/12 ,  H04W74/08 ,  H04W84/12

CPC分类号： H04W74/002 ,  H04W4/70 ,  H04W12/06 ,  H04W48/08 ,  H04W52/367 ,  H04W72/121 ,  H04W74/006 ,  H04W74/08 ,  H04W84/12

摘要： A layered channel access method of a Group Representative-station (GR-STA) in a Wireless Local Area Network (WLAN) system is provided. The method includes receiving a management, including setting information indicative of a first phase and a second phase frame, from an Access Point (AP), receiving a first radio frame from the AP or accessing a channel and sending a second radio frame to the AP during the first phase indicated by the setting information, and receiving a third radio frame from an affiliated STA of a group to which the GR-STA belongs or accessing a channel and sending a fourth radio frame to at least one STA of the group to which the GR-STA belongs during the second phase indicated by the setting information.

公开(公告)号：US09414413B2

公开(公告)日：2016-08-09

申请号：US14124626

申请日：2012-06-04

申请人： Jong Hyun Park ,  Ill Soo Sohn ,  Eun Sun Kim ,  Yong Ho Seok

发明人： Jong Hyun Park ,  Ill Soo Sohn ,  Eun Sun Kim ,  Yong Ho Seok

IPC分类号： H04W74/08 ,  H04W84/12

CPC分类号： H04W74/085 ,  H04W74/0816 ,  H04W84/12

摘要： The present invention relates to a method for transmitting a frame, which is performed by a transmission station in a wireless LAN system that supports frame transmission and reception on the basis of a first physical layer and a second physical layer. The method comprises the steps of: transmitting a request-to-send (RTS) to a reception station through the first physical layer of the transmission station; receiving, by the reception station, a first clear-to-send (CTS) frame transmitted through the first physical layer of the reception station in response to the RTS frame; and transmitting a second CTS frame through the second physical layer of the transmission station, then transmitting a data frame through the first physical layer of the transmission station.

摘要翻译： 本发明涉及一种用于发送帧的方法，该帧由无线LAN系统中的发送站基于第一物理层和第二物理层支持帧发送和接收来执行。 该方法包括以下步骤：通过发送站的第一物理层向接收站发送请求发送（RTS）; 由所述接收站接收响应于所述RTS帧通过所述接收站的所述第一物理层发送的第一清除发送（CTS）帧; 以及通过所述传输站的所述第二物理层发送第二CTS帧，然后通过所述传输站的所述第一物理层发送数据帧。

公开(公告)号：US09369895B2

公开(公告)日：2016-06-14

申请号：US14124584

申请日：2012-06-01

申请人： Ill Soo Sohn ,  Sunghyun Choi ,  Seung Min Yoo ,  Hyewon Lee ,  Mun Hwan Choi ,  Yong Ho Seok ,  Ok Hwan Lee

发明人： Ill Soo Sohn ,  Sunghyun Choi ,  Seung Min Yoo ,  Hyewon Lee ,  Mun Hwan Choi ,  Yong Ho Seok ,  Ok Hwan Lee

IPC分类号： H04B7/04 ,  H04B7/06 ,  H04W24/08

CPC分类号： H04W24/08 ,  H04B7/0452 ,  H04B7/0617 ,  H04B7/0634 ,  H04B7/065

摘要： The present invention relates to a method and device for channel measurement in a wireless LAN system. A station (STA) receives a plurality of sounding frames from an access point (AP), estimates the plurality of sounding frames in order to generate long-term channel state information (LCSI), provides the generated LCSI to the AP as feedback, and receives from the AP a group identifier (ID) management frame comprising information on a group ID determined on the basis of the LCSI.

摘要翻译： 本发明涉及无线LAN系统中的信道测量方法和装置。 站点（STA）从接入点（AP）接收多个探测帧，估计多个探测帧以产生长期信道状态信息（LCSI），将生成的LCSI作为反馈提供给AP，以及 从AP接收包括基于LCSI确定的组ID的信息的组标识符（ID）管理帧。

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。