Method of transmitting precoding information in multiple antenna system
    81.
    发明授权
    Method of transmitting precoding information in multiple antenna system 有权
    在多天线系统中发送预编码信息的方法

    公开(公告)号:US08457245B2

    公开(公告)日:2013-06-04

    申请号:US12864656

    申请日:2009-01-29

    IPC分类号: H04L27/00

    摘要: A method of transmitting precoding information in a multiple antenna system includes selecting M subbands from a plurality of subbands constituting a whole frequency band in a descending order of a channel quality indicator (CQI), where M is an integer satisfying M>0, and transmitting a first precoding matrix indicator (PMI) for the M subbands and a second PMI for a remaining band, wherein the first PMI is a PMI of a codebook selected from a first codebook set including a plurality of codebooks and the second PMI is a PMI of a codebook selected from a second codebook set including a part of the plurality of codebooks of the first codebook set. Accordingly, precoding information can be effectively transmitted by separately preparing a codebook for a best band and a codebook for a non-selected band.

    摘要翻译: 在多天线系统中发送预编码信息的方法包括:从信道质量指示符(CQI)的降序中选择构成整个频带的多个子带的M个子带,其中,M是满足M> 0的整数,并且发送 用于所述M个子带的第一预编码矩阵指示符(PMI)和用于剩余频带的第二PMI,其中所述第一PMI是从包括多个码本的第一码本集中选择的码本的PMI,并且所述第二PMI是 从包括第一码本集合的多个码本的一部分的第二码本集中选择的码本。 因此,可以通过单独准备用于最佳频带的码本和非选择频带的码本来有效地发送预编码信息。

    Method of transmitting data in multiple antenna system
    83.
    发明授权
    Method of transmitting data in multiple antenna system 有权
    在多天线系统中传输数据的方法

    公开(公告)号:US08400950B2

    公开(公告)日:2013-03-19

    申请号:US13169800

    申请日:2011-06-27

    IPC分类号: H04J1/16 H04L12/56

    摘要: A method of transmitting data in a wireless communication system comprises receiving feedback data on an uplink data channel, the feedback data comprising a precoding matrix indicator (PMI), wherein the value of the PMI corresponds to an index in a codebook, transmitting a precoding scheme for downlink data on a downlink control channel, wherein the precoding scheme is determined as one of at least two of a transmit diversity irrespective of the received PMI, an acknowledgement indicating precoding according to the received PMI and a new PMI indicating that it is used in precoding downlink data to be transmitted, and transmitting the downlink data on a downlink data channel after applying precoding according to the determined precoding scheme.

    摘要翻译: 一种在无线通信系统中发送数据的方法包括在上行链路数据信道上接收反馈数据,反馈数据包括预编码矩阵指示符(PMI),其中PMI的值对应于码本中的索引,发送预编码方案 对于下行链路控制信道上的下行链路数据,其中所述预编码方案被确定为与所接收的PMI无关的发射分集中的至少两个中的一个,根据接收到的PMI指示预编码的确认和指示其用于 预编码要发送的下行链路数据,以及在根据所确定的预编码方案应用预编码之后,在下行链路数据信道上发送下行链路数据。

    Method of transmitting data in multiple antenna system
    84.
    发明授权
    Method of transmitting data in multiple antenna system 有权
    在多天线系统中传输数据的方法

    公开(公告)号:US08363633B2

    公开(公告)日:2013-01-29

    申请号:US12808328

    申请日:2008-12-16

    IPC分类号: H04J1/00

    摘要: A method of transmitting data in a multiple antenna system includes transmitting first data through a first pilot pattern zone in which pilots are arranged in a specific pilot pattern in a permutation zone having at least one tile comprising a plurality of orthogonal frequency division multiplexing (OFDM) symbols and a plurality of subcarriers, and transmitting second data through a second pilot pattern zone in which pilots are arranged in another pilot pattern different from the pilot pattern of the first pilot pattern zone in the permutation zone. Accordingly, a plurality of pilot patterns can be simultaneously used in one permutation zone, and thus waste of radio resources caused by the use of unnecessary pilots can be reduced by adaptively assigning pilots according to various channel environments and performances of user equipments.

    摘要翻译: 在多天线系统中发送数据的方法包括:通过第一导频模式区发送第一数据,其中导频在具有包括多个正交频分复用(OFDM)的至少一个瓦片的置换区中的特定导频模式中排列, 符号和多个子载波,并且通过第二导频模式区发送第二数据,其中导频被布置在与置换区中的第一导频模式区的导频模式不同的另一导频模式中。 因此,可以在一个排列区域中同时使用多个导频模式,从而可以通过根据各种信道环境和用户设备的性能自适应地分配导频来减少由使用不必要的导频引起的无线资源浪费。

    METHOD FOR TRANSMITTING DATA USING CYCLIC DELAY DIVERSITY
    88.
    发明申请
    METHOD FOR TRANSMITTING DATA USING CYCLIC DELAY DIVERSITY 审中-公开
    使用循环延迟多样性发送数据的方法

    公开(公告)号:US20100322349A1

    公开(公告)日:2010-12-23

    申请号:US12446565

    申请日:2007-10-23

    IPC分类号: H04L27/00

    CPC分类号: H04B7/0671 H04L27/2602

    摘要: A method of transmitting data using cyclic delay in a multi-antenna system using a plurality of subcarriers is disclosed. Data is transmitted through a phase shift based precoding scheme enhanced from a related art phase shift diversity and a related art precoding scheme. A generalized cyclic delay diversity scheme is selectively applied to a phase shift based precoding scheme or a related art precoding scheme executed on a frequency domain is transferred to a time domain to be applied as a generalized cyclic delay diversity scheme. Accordingly, complexity of a receiver is reduced and communication efficiency can be enhanced.

    摘要翻译: 公开了一种使用多个子载波在多天线系统中使用循环延迟发送数据的方法。 通过相关技术的相移分集和相关技术预编码方案增强的基于相移的预编码方案来发送数据。 将广义循环延迟分集方案选择性地应用于基于相移的预编码方案,或者将在频域上执行的现有技术的预编码方案传送到要作为广义循环延迟分集方案应用的时域。 因此,接收机的复杂性降低,并且可以提高通信效率。

    UPLINK PRECODING METHOD IN 4-Tx SYSTEM
    89.
    发明申请
    UPLINK PRECODING METHOD IN 4-Tx SYSTEM 有权
    4-Tx系统中的UPLINK PRECODING方法

    公开(公告)号:US20100208838A1

    公开(公告)日:2010-08-19

    申请号:US12704483

    申请日:2010-02-11

    IPC分类号: H04B7/02

    摘要: A method for a user equipment to precode and transmit an uplink signal efficiently in a 4-antenna system and a method for a base station to receive the transmitted signal efficiently are disclosed. Four antennas of a user equipment can be grouped by a 2-antenna unit. In consideration of this antenna group, it is able to perform precoding using antenna selection/DFT matrix of the antenna group unit. Moreover, a rank-3 codebook can be configured to include a precoding matrix of a type in consideration of power balance per antenna and a precoding matrix including one non-zero component only in one row for maintaining a good CM property.

    摘要翻译: 公开了一种用于在4天线系统中有效地预编码和发送上行链路信号的用户设备的方法以及用于基站有效地接收所发送的信号的方法。 用户设备的四个天线可以通过2天线单元分组。 考虑到该天线组,能够使用天线组单元的天线选择/ DFT矩阵进行预编码。 此外,等级3码本可以被配置为包括考虑每个天线的功率平衡的类型的预编码矩阵和仅在一行中包括一个非零分量的预编码矩阵以维持良好的CM属性。

    METHOD FOR TRANSMITTING AND RECEIVING FEEDBACK INFORMATION
    90.
    发明申请
    METHOD FOR TRANSMITTING AND RECEIVING FEEDBACK INFORMATION 有权
    发送和接收反馈信息的方法

    公开(公告)号:US20100097949A1

    公开(公告)日:2010-04-22

    申请号:US12525804

    申请日:2008-02-05

    IPC分类号: H04W72/04 H04L12/26 H04L27/28

    摘要: A method for efficiently transmitting and receiving feedback information is disclosed. A cluster size as a unit for computing the feedback information and a reporting period of the feedback information are not uniformly determined by a base station. Information about a downlink channel status of each user equipment is reported, the cluster size and feedback period for computing and reporting the feedback information are determined using the information about the downlink channel status of each user equipment, and the feedback information is transmitted/received, thereby improving system capability.

    摘要翻译: 公开了一种有效地发送和接收反馈信息的方法。 作为用于计算反馈信息的单元的集群大小和反馈信息的报告周期不是由基站均匀地确定的。 报告关于每个用户设备的下行链路信道状态的信息,使用关于每个用户设备的下行链路信道状态的信息来确定用于计算和报告反馈信息的集群大小和反馈周期,并且反馈信息被发送/接收, 从而提高系统能力。