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    Method for indicating precoding matrix indicator in uplink MIMO system with based on SC-FDMA
    3.
    发明授权
    Method for indicating precoding matrix indicator in uplink MIMO system with based on SC-FDMA 有权
    基于SC-FDMA的上行MIMO系统中预编码矩阵指示符的方法

    公开(公告)号：US09178595B2

    公开(公告)日：2015-11-03

    申请号：US13148886

    申请日：2010-02-19

    申请人： Byeong Woo Kang ,  Joon Kui Ahn ,  Dong Youn Seo ,  Jung Hoon Lee ,  Yu Jin Noh ,  Byoung Hoon Kim ,  Suck Chel Yang ,  Bong Hoe Kim ,  Dae Won Lee

    发明人： Byeong Woo Kang ,  Joon Kui Ahn ,  Dong Youn Seo ,  Jung Hoon Lee ,  Yu Jin Noh ,  Byoung Hoon Kim ,  Suck Chel Yang ,  Bong Hoe Kim ,  Dae Won Lee

    IPC分类号： H04B7/216 ,  H04B7/06 ,  H04L5/00

    CPC分类号： H04B7/0639 ,  H04L5/0039

    摘要： A method of transmitting PMI (precoding matrix indicator) information in an uplink MIMO system is disclosed. The present invention includes the steps of receiving channel information from a user equipment and transmitting information on a resource allocated to the user equipment in uplink transmission and PMI information indicating a precoding matrix to apply to a region of the resource among a plurality of precoding matrices to the user equipment based on the received channel information, wherein the resource allocated to the user equipment is allocated by a bundle unit of a prescribed number of subcarriers, wherein each of a plurality of the precoding matrices are applied to regions generated from dividing a whole frequency band into a prescribed number of regions, respectively, and wherein the precoding matrix applied to the resource among a plurality of the precoding matrices has a maximum area resulting from overlapping a frequency band occupied by the allocated resource with a frequency band having the precoding matrix applied thereto.

    摘要翻译： 公开了一种在上行链路MIMO系统中发送PMI（预编码矩阵指示符）信息的方法。 本发明包括以下步骤：从用户设备接收信道信息，并在上行链路传输中发送关于分配给用户设备的资源的信息，以及指示预编码矩阵的PMI信息，以应用于多个预编码矩阵中的资源区域，以 所述用户设备基于所接收的信道信息，其中，分配给所述用户设备的资源由规定数量的副载波的分组单元分配，其中，所述多个预编码矩阵中的每一个被应用于从分频整个频率 并且其中在多个预编码矩阵中应用于资源的预编码矩阵具有由所分配的资源占据的频带与具有预编码矩阵的频带重叠而产生的最大区域 到此。

    Method for performing retransmission in MIMO wireless communication system and apparatus therefor
    4.
    发明授权
    Method for performing retransmission in MIMO wireless communication system and apparatus therefor 有权
    MIMO无线通信系统中的重传方法及其装置

    公开(公告)号：US09042314B2

    公开(公告)日：2015-05-26

    申请号：US13386015

    申请日：2010-08-02

    申请人： Byeong Woo Kang ,  Dong Wook Roh ,  Yu Jin Noh ,  Bong Hoe Kim ,  Dae Won Lee

    发明人： Byeong Woo Kang ,  Dong Wook Roh ,  Yu Jin Noh ,  Bong Hoe Kim ,  Dae Won Lee

    IPC分类号： H04L5/00 ,  H04B7/04 ,  H04L1/16 ,  H04W74/00 ,  H04W72/04

    CPC分类号： H04L5/0023 ,  H04B7/0404 ,  H04B7/0413 ,  H04L1/1671 ,  H04L5/0055 ,  H04W72/04 ,  H04W72/042 ,  H04W74/004

    摘要： A method for performing retransmission at a user equipment of a MIMO wireless communication system is disclosed. The method comprises transmitting multiple transport blocks to a base station for a transmission unit time in accordance with uplink grant information, which includes a first new data indicator; receiving ACK/NACK (Acknowledgement/Negative-ACK) responses corresponding to the respective transport blocks and uplink grant information, which includes a second new data indicator, from the base station; and performing new transmission or retransmission for the multiple transport blocks in one transport block unit for a transmission unit time in accordance with the ACK/NACK responses and the second new data indicator, if transport rank is reduced to 1.

    摘要翻译： 公开了一种在MIMO无线通信系统的用户设备进行重传的方法。 该方法包括：根据包括第一新数据指示符的上行授权信息向基站发送多个传输块用于传输单元时间; 从基站接收对应于相应传输块的ACK / NACK（确认/否定ACK）响应和包括第二新数据指示符的上行链路许可信息; 并且如果传输等级减少到1，则根据ACK / NACK响应和第二新数据指示符，针对传输单元时间的一个传输块单元中的多个传输块执行新的传输或重传。

    Method of reducing interference between stations in wireless LAN system, and apparatus supporting the same
    7.
    发明授权
    Method of reducing interference between stations in wireless LAN system, and apparatus supporting the same 有权
    减少无线局域网系统中站间干扰的方法及其支持的装置

    公开(公告)号：US08995342B2

    公开(公告)日：2015-03-31

    申请号：US13515266

    申请日：2010-08-18

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

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

    IPC分类号： H04B15/00 ,  H04W84/12 ,  H04W72/08 ,  H04W28/04 ,  H04W48/16 ,  H04W88/08

    CPC分类号： H04W72/082 ,  H04W28/04 ,  H04W48/16 ,  H04W72/046 ,  H04W84/12 ,  H04W88/08

    摘要： An interference avoidance method performed by an Access Point (AP) in a WLAN system in an Overlapping Basic Service Set (OBSS) environment is provided. The interference avoidance method includes receiving an interference avoidance request message from the first STA, the interference avoidance request message informing that frame transmission of the AP acts as interference with a first STA; transmitting an interference avoidance response message in response to the interference avoidance request message; obtaining first channel information about a first channel between the first STA and the AP from the first STA which has received the interference avoidance response message; determining a transmitting steering matrix based on the first channel information; and transmitting data to a second STA by performing beamforming according to the transmitting steering matrix.

    摘要翻译： 提供了一种由重叠基础服务集（OBSS）环境中的WLAN系统中的接入点（AP）执行的干扰避免方法。 干扰避免方法包括从第一STA接收干扰避免请求消息，通知AP的帧传输作为与第一STA的干扰的干扰避免请求消息; 响应于所述干扰避免请求消息发送干扰避免响应消息; 从已经接收到干扰避免响应消息的第一STA获取关于第一STA和AP之间的第一信道的第一信道信息; 基于所述第一信道信息确定发射导向矩阵; 以及通过根据发射导向矩阵执行波束成形来将数据发送到第二STA。

    Method for transmitting and receiving downlink reference signals in a wireless communication system having multiple antennas
    8.
    发明授权
    Method for transmitting and receiving downlink reference signals in a wireless communication system having multiple antennas 有权
    用于在具有多个天线的无线通信系统中发送和接收下行链路参考信号的方法

    公开(公告)号：US08891650B2

    公开(公告)日：2014-11-18

    申请号：US13132596

    申请日：2009-12-03

    申请人： Yu Jin Noh ,  Young Woo Yun ,  Dae Won Lee ,  Bong Hoe Kim ,  Ki Jun Kim

    发明人： Yu Jin Noh ,  Young Woo Yun ,  Dae Won Lee ,  Bong Hoe Kim ,  Ki Jun Kim

    IPC分类号： H04B7/02 ,  H04L1/02 ,  H04B7/06 ,  H04L5/00 ,  H04W52/34

    CPC分类号： H04B7/0617 ,  H04L5/0048 ,  H04W52/34

    摘要： A method for transmitting and receiving downlink Reference Signals (RSs) in a wireless communication system using multiple antennas is disclosed. The downlink RS transmission method includes transmitting a first Orthogonal Frequency Division Multiplexing (OFDM) symbol in which RSs for a plurality of antenna port of first group are allocated in a predetermined order along a frequency axis, RSs for a plurality of antenna port of second group are allocated in a predetermined order along the frequency axis, and the RSs for the plurality of antenna port of first group are multiplexed in Code Division Multiplexing (CDM) with the RSs for the plurality of antenna port of second group by pairing each of the plurality of antenna port of first group with one of the plurality of antenna port of second group, and transmitting a second OFDM symbol in which the RSs for the plurality of antenna port of first group and the RSs for the plurality of antenna port of second group are positioned in an RS pattern being a frequency-domain shift of an RS pattern of the first OFDM symbol.

    摘要翻译： 公开了一种在使用多个天线的无线通信系统中发送和接收下行链路参考信号（RS）的方法。 下行链路RS传输方法包括发送第一正交频分复用（OFDM）符号，其中沿着频率轴以预定顺序分配第一组的多个天线端口的RS，第二组的多个天线端口的RS 沿着频率轴以预定顺序被分配，并且第一组的多个天线端口的RS被多路复用在码分复用（CDM）中，与第二组的多个天线端口的RS通过配对多个 第一组的天线端口与第二组的多个天线端口之一的天线端口相连接，并且发送第二组OFDM符号，其中第一组的多个天线端口的RS和第二组的多个天线端口的RS是 位于RS模式中的是第一OFDM符号的RS模式的频域偏移。

    Method and apparatus for transceiving a MIMO packet in a wireless LAN system
    9.
    发明授权
    Method and apparatus for transceiving a MIMO packet in a wireless LAN system 有权
    用于在无线LAN系统中收发MIMO分组的方法和装置

    公开(公告)号：US08879490B2

    公开(公告)日：2014-11-04

    申请号：US13505388

    申请日：2011-06-30

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

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

    IPC分类号： H04W4/00 ,  H04L1/00 ,  H04L1/06 ,  H04L27/26 ,  H04B7/04 ,  H04W84/12

    CPC分类号： H04L1/0009 ,  H04B7/0413 ,  H04B7/0452 ,  H04L1/0003 ,  H04L1/0031 ,  H04L1/0057 ,  H04L1/0059 ,  H04L1/0075 ,  H04L1/06 ,  H04L5/0048 ,  H04L25/0226 ,  H04L27/2602 ,  H04W84/12

    摘要： A method of transmitting a multiple input multiple output (MIMO) packet by a transmitter in a wireless local area network (WLAN) system is provided. The method includes: generating a MIMO packet including at least one spatial stream set transmitted respectively to at least one receiver, wherein each spatial stream set is encoded on the basis of one of two encoding schemes; transmitting first control information including a MIMO indicator and a first modulation and coding scheme (MCS) field, wherein the MIMO indicator indicates whether the MIMO packet is for single user (SU)-MIMO or multi user (MU)-MIMO, and the first MCS field indicates an MCS used for the MIMO packet if the MIMO packet is for SU-MIMO transmission, and indicates an encoding scheme applied for each of the spatial stream sets if the MIMO packet is for MU-MIMO transmission; and transmitting the MIMO packet to at least one receiver.

    摘要翻译： 提供了一种在无线局域网（WLAN）系统中由发射机发送多输入多输出（MIMO）分组的方法。 该方法包括：产生包括分别发送给至少一个接收机的至少一个空间流集合的MIMO分组，其中每个空间流集合基于两种编码方案之一进行编码; 发送包括MIMO指示符和第一调制和编码方案（MCS）字段的第一控制信息，其中所述MIMO指示符指示所述MIMO分组是针对单用户（SU）-MIMO还是多用户（MU）-MIMO，并且所述第一 如果MIMO分组用于SU-MIMO传输，则MCS字段指示用于MIMO分组的MCS，并且如果MIMO分组用于MU-MIMO传输，则指示针对每个空间流集合应用的编码方案; 以及将MIMO分组发送到至少一个接收机。

    Interference avoidance method and apparatus for supporting same in a wireless LAN system
    10.
    发明授权
    Interference avoidance method and apparatus for supporting same in a wireless LAN system 有权
    用于在无线LAN系统中支持的干扰避免方法和装置

    公开(公告)号：US08867394B2

    公开(公告)日：2014-10-21

    申请号：US13517951

    申请日：2010-11-04

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

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

    IPC分类号： G01R31/08 ,  H04B7/04 ,  H04L5/00 ,  H04W16/28 ,  H04L25/02

    CPC分类号： H04B7/0452 ,  H04L5/0023 ,  H04L5/0091 ,  H04L25/0204 ,  H04L25/0224 ,  H04W16/28

    摘要： An interference avoidance method performed by an access point (AP) in a wireless local area network (WLAN) system is provided. The method includes: transmitting a training request (TRQ) message for requesting transmission of a sounding frame to a first station which is a target of multi-user multiple input multiple output (MU-MIMO) transmission and a second station which receives data through a direct link during the MU-MIMO transmission; receiving first and second sounding frames respectively transmitted by the first and second stations in response to the TRQ message; estimating a channel by using the first sound frame to determine a beam-forming vector to be used for the MU-MIMO transmission; and performing the MU-MIMO transmission for MU-MIMO transmission target stations including the first station, wherein the beam-forming vector is determined such that the MU-MIMO transmission has a minimum effect on the second station by considering channel information between the AP and the second station and acquired on the basis of the second sounding frame received from the second station.

    摘要翻译： 提供了一种由无线局域网（WLAN）系统中的接入点（AP）执行的干扰避免方法。 该方法包括：向作为多用户多输入多输出（MU-MIMO）传输的目标的第一站发送用于请求发送探测帧的训练请求（TRQ）消息，以及通过一个接收数据的第二站 在MU-MIMO传输期间的直接链路; 接收响应于所述TRQ消息由所述第一和第二站分别发送的第一和第二探测帧; 通过使用第一声音帧来估计要用于MU-MIMO传输的波束形成向量的信道; 以及对包括第一站的MU-MIMO传输目标站执行MU-MIMO传输，其中确定波束形成向量，使得MU-MIMO传输对第二站具有最小影响，考虑AP与AP之间的信道信息 第二站，并且基于从第二站接收的第二探测帧获取。