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1. 发明申请

WO2010079387A1 EFFICIENT MIMO TRANSMISSION SCHEMES 审中-公开
标题翻译：有效的MIMO传输方案
公开(公告)号：WO2010079387A1
公开(公告)日：2010-07-15
申请号：PCT/IB2009/052726
申请日：2009-06-25
申请人： MARVELL WORLD TRADE LTD , PERETS, Yona , GOMADAM, Krishna Srikanth , ERELL, Adoram , YELLIN, Daniel , MELZER, Ezer
发明人： PERETS, Yona , GOMADAM, Krishna Srikanth , ERELL, Adoram , YELLIN, Daniel , MELZER, Ezer
IPC分类号： H04L27/00
CPC分类号： H04B7/0473 , H04L1/0009 , H04L1/0656 , H04L1/0675 , H04L5/0025
摘要： A method for communication includes, in a transmitter (20) having a first number of transmit antenna ports (52), 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（52）的发射机（20）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，被分配用于传输给给定的接收机。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。空间层的实际数量从发射机发射到给定的接收机。

2. 发明申请

WO2012131612A1 CHANNEL FEEDBACK FOR COOPERATIVE MULTIPOINT TRANSMISSION 审中-公开
标题翻译：用于合作多点传输的信道反馈
公开(公告)号：WO2012131612A1
公开(公告)日：2012-10-04
申请号：PCT/IB2012/051511
申请日：2012-03-29
申请人： MARVELL WORLD TRADE LTD. , GOMADAM, Krishna Srikanth , ZHANG, Yan , ERELL, Adoram
发明人： GOMADAM, Krishna Srikanth , ZHANG, Yan , ERELL, Adoram
IPC分类号： H04B7/02
CPC分类号： H04B7/0626 , H04B7/024 , H04B7/0417 , H04B7/0623 , H04W52/40
摘要： A method includes receiving in a mobile communication terminal (24) downlink signals from at least first and second cells (28) 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 cause the first cell to precode subsequent downlink signals in response to the channel feedback with a first precoding vector, and to cause the second cell to precode the subsequent downlink signals in response to the channel feedback with a second precoding vector that differs in magnitude from the first precoding vector. The channel feedback is transmitted from the terminal.
摘要翻译：一种方法包括在移动通信终端（24）中接收来自协调下行链路信号彼此传输的至少第一和第二小区（28）的下行链路信号。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响应于具有第一预编码向量的信道反馈来对后续下行链路信号进行预编码，并且响应于具有第二预编码向量的信道反馈使第二小区对后续下行链路信号进行预编码其幅度与第一预编码矢量不同。信道反馈从终端发送。

3. 发明申请

WO2010116273A1 IMPROVED FEEDBACK STRATEGIES FOR MULTI-USER MIMO COMMUNICATION SYSTEMS 审中-公开
标题翻译：改进多用户MIMO通信系统的反馈策略
公开(公告)号：WO2010116273A1
公开(公告)日：2010-10-14
申请号：PCT/IB2010/051089
申请日：2010-03-14
申请人： MARVELL WORLD TRADE LTD , GOMADAM, Krishna Srikanth , YELLIN, Daniel , LI, Yu-Ngok
发明人： GOMADAM, Krishna Srikanth , YELLIN, Daniel , LI, Yu-Ngok
IPC分类号： H04W4/00
CPC分类号： H04B7/0452 , H04B7/0417 , H04B7/0632
摘要： A method for signal processing in a receiver (28A) includes receiving in the receiver a Multi-User Multiple-Input Multiple-Output (MU-MIMO) signal. The MU-MIMO signal includes at least a first signal, which is precoded using a first precoding scheme and is addressed to the receiver, and a second signal, which is precoded using a second precoding scheme. An average error rate achievable in decoding the first signal in the presence of the second signal is computed. The average error rate is computed over a set of possible choices of the second precoding scheme. The first precoding scheme is selected from among a plurality of available precoding schemes so as to satisfy a criterion defined over the average error rate. The receiver sends feedback to a transmitter (24) transmitting the first signal. The feedback depends on the selected first precoding scheme and causes the transmitter to control transmission of the first signal.
摘要翻译：一种用于在接收机（28A）中进行信号处理的方法包括在接收机中接收多用户多输入多输出（MU-MIMO）信号。 MU-MIMO信号至少包括第一信号，其使用第一预编码方案进行预编码，并且被寻址到接收机，以及第二信号，其使用第二预编码方案被预编码。计算在存在第二信号的情况下解码第一信号时可实现的平均错误率。在第二预编码方案的一组可能选择上计算平均错误率。从多个可用预编码方案中选择第一预编码方案，以便满足在平均错误率上定义的标准。接收机向发送第一信号的发射机（24）发送反馈。反馈取决于所选择的第一预编码方案，并且使得发射机控制第一信号的传输。

4. 发明申请

WO2013068915A2 PRECODING FEEDBACK FOR CROSS-POLARIZED ANTENNAS WITH MAGNITUDE INFORMATION 审中-公开
标题翻译：使用信号信息预测交叉极化天线的反馈
公开(公告)号：WO2013068915A2
公开(公告)日：2013-05-16
申请号：PCT/IB2012/056181
申请日：2012-11-06
申请人： MARVELL WORLD TRADE LTD.
发明人： GOMADAM, Krishna Srikanth
IPC分类号： H04B1/38
CPC分类号： H04B7/0634 , H04B7/0639 , H04B7/0641 , H04B7/065 , H04B7/10
摘要： A method includes receiving in a mobile communication terminal (28) a precoded Multiple-Input Multiple-Output (MIMO) signal, which includes first and second signal components transmitted at respective different first and second polarizations. A difference between respective signal magnitudes of the first and second signal components received in the terminal is estimated in the terminal. Feedback information, which includes at least an indication of the difference between the signal magnitudes, is calculated and transmitted from the terminal.
摘要翻译：一种方法包括在移动通信终端（28）中接收预编码的多输入多输出（MIMO）信号，该信号包括在各自不同的第一和第二偏振下发送的第一和第二信号分量。在终端中估计在终端中接收的第一和第二信号分量的各个信号幅度之间的差异。至少包括信号幅度差的指示的反馈信息被计算并从终端发送。

5. 发明申请

WO2013168081A3 METHOD AND SYSTEM FOR REPORTING FEEDBACK IN COOPERATIVE MULTIPOINT TRANSMISSION 审中-公开
公开(公告)号：WO2013168081A3
公开(公告)日：2013-11-14
申请号：PCT/IB2013/053646
申请日：2013-05-07
申请人： MARVELL WORLD TRADE LTD.
发明人： GOMADAM, Krishna Srikanth
IPC分类号： H04L12/26
摘要： A method includes receiving, in a communication terminal (24), signals from a group of cells (28). The group of cells cooperates in a Coordinated Multipoint (CoMP) transmission scheme that assigns multiple Channel State Information Reference Signals (CSI-RS) resources to the cells. A first subset of the CSI-RS resources is assigned to periodically report channel feedback on a first uplink channel, and a second subset of the CSI-RS resources is assigned to a-periodically report the channel feedback on a second uplink channel. The channel feedback is computed for the multiple CSI-RS resources. The channel feedback computed for the CSI- RS resources is transmitted in the first subset on the first uplink channel, and the channel feedback computed for the CSI-RS resources in the second subset is transmitted on the second uplink channel.

6. 发明申请

WO2013160795A1 COORDINATED MULTIPOINT (COMP) COMMUNICATION BETWEEN BASE-STATIONS AND MOBILE COMMUNICATION TERMINALS 审中-公开
标题翻译：基站与移动通信终端之间的协调多点（COMP）通信
公开(公告)号：WO2013160795A1
公开(公告)日：2013-10-31
申请号：PCT/IB2013/052963
申请日：2013-04-14
申请人： MARVELL WORLD TRADE LTD.
发明人： GOMADAM, Krishna Srikanth , CHOI, Jihwan P.
IPC分类号： H04W24/00
CPC分类号： H04W24/00 , H04B7/024 , H04B7/0619 , H04B17/24 , H04B17/309 , H04L1/0026 , H04L1/0029 , H04L1/0077 , H04L1/06 , H04L25/0224 , H04W72/042
摘要： A method includes receiving, at a communication terminal (24), signals from a group of cells (28) that cooperate in a Coordinated Multipoint (Co MP) transmission scheme. Signaling (64) that specifies a Co MP resource management (CRM) set is received at the communication terminal. The CRM set includes a subset of the cells in the group for which the communication terminal is to perform signal measurements. A size of the CRM set is restricted to a predefined maximum size. The signal measurements are performed at the communication terminal only on the signals received from one or more of the cells in the CRM set. The signal measurements performed on the one or more of the cells in the CRM set are reported from the communication terminal.
摘要翻译：一种方法包括在通信终端（24）处接收来自以协调多点（Co MP）传输方案协作的一组小区（28）的信号。在通信终端处接收指定Co MP资源管理（CRM）集合的信令（64）。 CRM集合包括通信终端要进行信号测量的组中的小区的子集。 CRM集的大小限于预定义的最大大小。信号测量仅在通信终端仅在从CRM集合中的一个或多个小区接收到的信号上执行。从通信终端报告对CRM集中的一个或多个小区执行的信号测量。

7. 发明申请

WO2013088374A2 ENHANCED DEMODULATION REFERENCE SIGNAL (DM-RS) DESIGN 审中-公开
标题翻译：增强解调参考信号（DM-RS）设计
公开(公告)号：WO2013088374A2
公开(公告)日：2013-06-20
申请号：PCT/IB2012/057248
申请日：2012-12-12
申请人： MARVELL WORLD TRADE LTD.
发明人： GOMADAM, Krishna Srikanth , SUN, Yakun
IPC分类号： H04L9/00
CPC分类号： H04K1/02 , H04B7/024 , H04B7/0452 , H04L25/0226
摘要： A method in a mobile communication terminal (24) includes receiving a Multi-User Multiple-Input Multiple-Output (MU-MIMO) signal, which includes at least a precoded transmission that is addressed to the terminal and which includes one or more Demodulation Reference Signals (DM-RS). Control information, which indicates one or more scrambling sequences and one or more orthogonalization sequences used in producing the DM-RS, is received in the mobile communication terminal. The control information is provided in a format that does not permit signaling of every possible scrambling sequence and orthogonalization sequence selection. The control information is interpreted in the mobile communication terminal so as to identify the scrambling sequences and orthogonalization sequences used in producing the DM-RS, and the DM-RS are demodulated using the identified scrambling sequences and orthogonalization sequences.
摘要翻译：移动通信终端（24）中的方法包括：接收多用户多输入多输出（MU-MIMO）信号，所述多用户多输入多输出（MU-MIMO）信号至少包括寻址到终端的预编码传输，并且包括一个或多个解调参考信号（DM-RS）。在移动通信终端中接收控制信息，该信息指示在生成DM-RS中使用的一个或多个加扰序列和一个或多个正交化序列。以不允许每个可能的扰频序列和正交化序列选择的信令的格式提供控制信息。在移动通信终端中解释控制信息，以识别在制作DM-RS中使用的加扰序列和正交化序列，并且使用所识别的加扰序列和正交序列解调DM-RS。

8. 发明申请

WO2013068916A1 CODEBOOK SUB-SAMPLING FOR FREQUENCY-SELECTIVE PRECODING FEEDBACK 审中-公开
标题翻译：用于频率选择性预测反馈的CODEBOOK子采样
公开(公告)号：WO2013068916A1
公开(公告)日：2013-05-16
申请号：PCT/IB2012/056182
申请日：2012-11-06
申请人： MARVELL WORLD TRADE LTD.
发明人： GOMADAM, Krishna Srikanth
IPC分类号： H04L27/28
CPC分类号： H04B1/38 , H04B7/0456 , H04B7/0469 , H04B7/0478 , H04B7/0617 , H04B7/0619 , H04B7/0632 , H04B7/0641 , H04B7/066 , H04L1/0029 , H04L1/0031 , H04L5/0057
摘要： A method includes, in a mobile communication terminal (24), holding a definition (52) of a sub-sampled codebook identifying precoding matrices, which are selected from a master codebook that is made-up of a wideband codebook and a frequency-selective codebook. The definition defines a first subset of the wideband codebook and a second subset of the frequency-selective codebook. The second subset of the frequency-selective codebook is represented using no more than two bits. A Multiple-Input Multiple-Output (MIMO) signal is received in the terminal. Based on the received MIMO signal, one or more precoding matrices are selected from the sub-sampled codebook for precoding subsequent MIMO signals transmitted to the terminal, and precoding feedback indicating the selected precoding matrices is calculated. The precoding feedback is transmitted from the terminal.
摘要翻译：一种方法包括：在移动通信终端（24）中，保存从由宽带码本和频率选择性构成的主码本中选择的识别预编码矩阵的子采样码本的定义（52）码本。该定义定义了宽带码本的第一子集和频率选择码本的第二子集。使用不超过两位来表示频率选择码本的第二子集。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一个或多个预编码矩阵，用于对发送到终端的后续MIMO信号进行预编码，并且计算指示所选择的预编码矩阵的预编码反馈。从终端发送预编码反馈。

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