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公开(公告)号：US08325860B2
公开(公告)日：2012-12-04
申请号：US12838509
申请日：2010-07-19
摘要： A method includes, in a mobile communication terminal, receiving from at least first and second base stations, which cooperate in a coordinated transmission scheme, signals that are transmitted over respective first and second communication channels. Respective channel measures are calculated for the communication channels based on the received signals. First and second feedback data, which are indicative of the respective channel measures of the first and second communication channels, are formulated such that the first feedback data has a first data size and the second feedback data has a second data size, different from the first data size. The first and second feedback data are transmitted from the mobile communication terminal to at least one of the base stations.
摘要翻译： 一种方法包括在移动通信终端中，从协调传输方案中协作的至少第一和第二基站接收在各个第一和第二通信信道上发送的信号。 基于接收到的信号，为通信信道计算各个信道量度。 表示第一和第二通信信道的相应信道测量值的第一和第二反馈数据被配置为使得第一反馈数据具有第一数据大小，并且第二反馈数据具有与第一数据大小不同的第二数据大小 数据大小。 第一和第二反馈数据从移动通信终端发送到至少一个基站。
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公开(公告)号：US20100172424A1
公开(公告)日：2010-07-08
申请号：US12477152
申请日：2009-06-03
IPC分类号： H04L27/28
CPC分类号： H04B7/0473 , H04L1/0009 , H04L1/0656 , H04L1/0675 , H04L5/0025
摘要： A method for communication includes, in a transmitter having a first number of transmit antenna ports, setting an upper limit on a second number of spatial layers to be used by the transmitter to be less than the first number. An actual number of the spatial layers, which does not exceed the upper limit, is allocated for transmission to a given receiver. One or more streams of modulated symbols are mapped onto the allocated actual number of the spatial layers. The actual number of the spatial layers are transmitted from the transmitter to the given receiver.
摘要翻译： 一种用于通信的方法包括：在具有第一数量的发射天线端口的发射机中，将发射机使用的第二数量的空间层的上限设置为小于第一数量。 空间层的实际数量（不超过上限）被分配用于传送给给定的接收机。 调制符号的一个或多个流被映射到所分配的实际数量的空间层上。 空间层的实际数量从发射机发射到给定的接收机。
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3.发明授权System and method for measuring characteristics of neighbor cells using a synthesized composite antenna pattern 有权使用合成复合天线图案测量相邻单元特性的系统和方法公开(公告)号：US09237459B1
公开(公告)日：2016-01-12
申请号：US13314215
申请日：2011-12-08
CPC分类号： H04W24/00 , H04B17/309 , H04B17/318
摘要： A method includes receiving in a receiver transmissions from a serving cell that serves the receiver and from one or more neighbor cells. The transmissions are received via multiple receive antennas to produce multiple respective output signals. The multiple output signals are weighed with respective weights, and the weighted output signals are combined to produce a combined output signal. The weights are selected so as to form a composite antenna pattern having a first antenna gain in one or more first directions that point toward the neighbor cells, and a second antenna gain, lower than the first antenna gain, in a second direction that points toward the serving cell. Characteristics of the one or more neighbor cells are measured by processing the combined output signal in which the transmissions received from the serving cell are attenuated.
摘要翻译： 一种方法包括在接收机中接收来自服务于接收机的服务小区和来自一个或多个相邻小区的传输。 通过多个接收天线接收传输以产生多个相应的输出信号。 多个输出信号用相应的权重称重，并且加权的输出信号被组合以产生组合的输出信号。 选择权重以形成在朝向相邻小区的一个或多个第一方向上具有第一天线增益的复合天线方向图，以及比第一天线增益低的第二天线增益，该第二方向指向第二方向 服务小区。 通过处理其中从服务小区接收的传输被衰减的组合输出信号来测量一个或多个相邻小区的特性。
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公开(公告)号：US08385441B2
公开(公告)日：2013-02-26
申请号：US12477152
申请日：2009-06-03
IPC分类号： H04L27/28
CPC分类号： H04B7/0473 , H04L1/0009 , H04L1/0656 , H04L1/0675 , H04L5/0025
摘要： A method for communication includes, in a transmitter having a first number of transmit antenna ports, setting an upper limit on a second number of spatial layers to be used by the transmitter to be less than the first number. An actual number of the spatial layers, which does not exceed the upper limit, is allocated for transmission to a given receiver. One or more streams of modulated symbols are mapped onto the allocated actual number of the spatial layers. The actual number of the spatial layers are transmitted from the transmitter to the given receiver. A precoding operation maps the spatial layers onto the transmit antenna ports. A first upper limit is set when the precoding operation depends on feedback from the given receiver. A second upper limit, which does not exceed the first upper limit, is set when the precoding operation is not dependent on the feedback.
摘要翻译： 一种用于通信的方法包括：在具有第一数量的发射天线端口的发射机中，将发射机使用的第二数量的空间层的上限设置为小于第一数量。 空间层的实际数量（不超过上限）被分配用于传送给给定的接收机。 调制符号的一个或多个流被映射到所分配的实际数量的空间层上。 空间层的实际数量从发射机发射到给定的接收机。 预编码操作将空间层映射到发射天线端口上。 当预编码操作取决于给定接收机的反馈时，设置第一上限。 当预编码操作不依赖于反馈时，设置不超过第一上限的第二上限。
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公开(公告)号：US20110110450A1
公开(公告)日：2011-05-12
申请号：US12838509
申请日：2010-07-19
摘要： A method includes, in a mobile communication terminal, receiving from at least first and second base stations, which cooperate in a coordinated transmission scheme, signals that are transmitted over respective first and second communication channels. Respective channel measures are calculated for the communication channels based on the received signals. First and second feedback data, which are indicative of the respective channel measures of the first and second communication channels, are formulated such that the first feedback data has a first data size and the second feedback data has a second data size, different from the first data size. The first and second feedback data are transmitted from the mobile communication terminal to at least one of the base stations.
摘要翻译： 一种方法包括在移动通信终端中，从协调传输方案中协作的至少第一和第二基站接收在各个第一和第二通信信道上发送的信号。 基于接收到的信号，为通信信道计算各个信道量度。 表示第一和第二通信信道的相应信道测量值的第一和第二反馈数据被配置为使得第一反馈数据具有第一数据大小，并且第二反馈数据具有与第一数据大小不同的第二数据大小 数据大小。 第一和第二反馈数据从移动通信终端发送到至少一个基站。
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公开(公告)号：US09048970B1
公开(公告)日：2015-06-02
申请号：US13346737
申请日：2012-01-10
CPC分类号： H04J11/0033 , H04B7/024 , H04B7/0417 , H04B7/0632 , H04B7/0639 , H04J11/0053
摘要： A method in a mobile communication terminal includes receiving signals from a serving cell and from one or more interfering cells. Respective channel responses are estimated in the terminal for the signals received from the interfering cells. A level of interference, caused by the signals of the interfering cells to a signal received from the serving cell, is derived from the channel responses. A Signal to Noise Ratio (SNR) is calculated for the signal received from the serving cell based on the level of interference caused by the signals of the interfering cells. Feedback information is produced based on the SNR and transmitted from the terminal.
摘要翻译： 移动通信终端中的方法包括从服务小区和一个或多个干扰小区接收信号。 对于从干扰小区接收的信号，在终端中估计各个信道响应。 从信道响应导出由干扰小区对从服务小区接收的信号的信号引起的干扰电平。 基于由干扰小区的信号引起的干扰电平，计算从服务小区接收的信号的信噪比（SNR）。 反馈信息是根据信噪比产生的，并从终端发送。
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公开(公告)号：US20120087425A1
公开(公告)日：2012-04-12
申请号：US13252218
申请日：2011-10-04
IPC分类号： H04L27/28
CPC分类号： H04B7/0478 , H04B7/0417 , H04B7/0486 , H04B7/0639 , H04B7/065 , H04L1/0618
摘要： A method in a mobile communication terminal includes holding a definition of a sub-sampled codebook identifying precoding matrices to be used for providing precoding feedback by the terminal The precoding matrices in the sub-sampled codebook are selected from a master codebook that is made-up of a long-term sub-codebook and a short-term sub-codebook. The definition defines a first subset of the long-term sub-codebook and a second subset of the short-term sub-codebook. A Multiple-Input Multiple-Output (MIMO) signal is received in the terminal via multiple receive antennas. Based on the received MIMO signal, a precoding matrix is selected from the sub-sampled codebook for precoding subsequent MIMO signals transmitted to the terminal. The precoding feedback indicating the selected precoding matrix is calculated.
摘要翻译： 移动通信终端中的方法包括保存用于识别由终端提供预编码反馈的预编码矩阵的子采样码本的定义。子采样码本中的预编码矩阵从组成的主码本中选择 的长期子码本和短期子码本。 该定义定义了长期子码本的第一子集和短期子码本的第二子集。 通过多个接收天线在终端中接收多输入多输出（MIMO）信号。 基于接收到的MIMO信号，从子采样码本中选择预编码矩阵，用于对发送到终端的后续MIMO信号进行预编码。 计算指示所选择的预编码矩阵的预编码反馈。
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公开(公告)号：US08761289B2
公开(公告)日：2014-06-24
申请号：US12965878
申请日：2010-12-12
申请人： Adoram Erell , Krishna Srikanth Gomadam , Yan Zhang , Ezer Melzer
发明人： Adoram Erell , Krishna Srikanth Gomadam , Yan Zhang , Ezer Melzer
CPC分类号： H04B7/10 , H04B7/063 , H04B7/0641 , H04B7/0663
摘要： A method includes receiving a Multiple-Input Multiple Output (MIMO) signal over multiple communication channels from an antenna array including a first set of antennas having a first polarization and a second set of the antennas having a second polarization that is orthogonal to the first polarization. First feedback information is calculated relating to first interrelations between the antennas within either the first set or the second set. Second feedback information is calculated relating at least to second interrelations between the first set and the second set of the antennas. The first feedback information is transmitted at a first time/frequency granularity, and the second feedback information is transmitted at a second time/frequency granularity that is finer than the first time/frequency granularity.
摘要翻译： 一种方法包括：从包括具有第一偏振的第一组天线的天线阵列的多个通信信道上接收多输入多输出（MIMO）信号，并且所述天线的第二组具有与第一极化正交的第二极化 。 计算与第一组或第二组内的天线之间的第一相互关系的第一反馈信息。 计算第二反馈信息至少与第一组和第二组天线之间的第二相互关系。 以第一时间/频率粒度发送第一反馈信息，并且以比第一时间/频率粒度更精细的第二时间/频率粒度发送第二反馈信息。
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公开(公告)号：US20120087435A1
公开(公告)日：2012-04-12
申请号：US13253078
申请日：2011-10-05
IPC分类号： H04B15/00
CPC分类号： H04B7/0632 , H04B7/0426 , H04B7/0452 , H04B7/0636 , H04B17/336
摘要： A method includes receiving in a mobile communication terminal over a communication channel a Multiple-Input Multiple-Output (MIMO) signal that includes at least a transmission addressed to the terminal. A Multi-User Signal to Noise Ratio (MU-SNR) is estimated in the terminal based on the received signal. The MU-SNR is indicative of a power ratio between the transmission addressed to the terminal and remaining components of the signal, which are assumed to include one or more transmissions addressed to one or more other terminals. Feedback, which is indicative of the communication channel and is based on the MU-SNR, is transmitted from the terminal.
摘要翻译： 一种方法包括在移动通信终端中通过通信信道接收至少包括寻址到终端的传输的多输入多输出（MIMO）信号。 基于接收到的信号，在终端中估计多用户信噪比（MU-SNR）。 MU-SNR指示寻址到终端的传输与信号的剩余部分之间的功率比，其被假设为包括寻址到一个或多个其他终端的一个或多个传输。 从终端发送表示通信信道并基于MU-SNR的反馈。
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公开(公告)号：US09124327B2
公开(公告)日：2015-09-01
申请号：US13433293
申请日：2012-03-29
CPC分类号： H04B7/0626 , H04B7/024 , H04B7/0417 , H04B7/0623 , H04W52/40
摘要： A method for mobile telecommunication includes receiving in a mobile communication terminal downlink signals from at least first and second cells that coordinate transmission of the downlink signals with one another. Channel feedback is calculated in the terminal based on the received downlink signals. The channel feedback is configured to enable the first cell to precode a first signal destined for the terminal in response to the channel feedback with a first precoding vector, and to enable the second cell to precode a second signal destined for the terminal in response to the channel feedback with a second precoding vector that differs in magnitude from the first precoding vector. The first and second signals convey same data. The channel feedback is transmitted from the terminal. Calculating the channel feedback includes calculating one or more of a single-user Channel Quality Indicator (CQI), a multi-user CQI, and a non-cooperative-transmission CQI.
摘要翻译： 一种用于移动通信的方法包括：在移动通信终端中接收来自至少第一和第二小区的下行链路信号，所述小区协调所述下行链路信号的传输。 基于接收到的下行链路信号在终端中计算信道反馈。 信道反馈被配置为使得第一小区能够响应于具有第一预编码向量的信道反馈来对目的地为终端的第一信号进行预编码，并且使得第二小区能够响应于所述终端来预编码去往终端的第二信号 信道反馈与第一预编码矢量的大小不同的第二预编码矢量。 第一和第二信号传送相同的数据。 信道反馈从终端发送。 计算信道反馈包括计算单用户信道质量指示符（CQI），多用户CQI和非协作传输CQI中的一个或多个。
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