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1. 发明授权

US08625450B2 Channel state information feedback for enhanced downlink multiple input—multiple output operation 有权
标题翻译：信道状态信息反馈，用于增强下行链路多输入多输出操作
公开(公告)号：US08625450B2
公开(公告)日：2014-01-07
申请号：US13080347
申请日：2011-04-05
申请人： Timo Lunttila , Tommi Koivisto , Timo Roman , Mihai Enescu
发明人： Timo Lunttila , Tommi Koivisto , Timo Roman , Mihai Enescu
IPC分类号： H04L12/26 , H04W4/00 , G06F11/00
CPC分类号： H04B7/0626 , H04B7/0632 , H04B7/0639
摘要： In accordance with the exemplary embodiments of the invention there is deriving multiple input-multiple output feedback information using a set of precoding matrices associated with at least one precoding codebook, signaling, in a first plurality of resource elements, channel state information associated with a first precoding matrix indicator of the set of precoding matrices jointly with a transmission rank, and signaling separately, in a second plurality of resource elements, channel state information associated with a second precoding matrix indicator of the set of precoding matrices. In addition, there is receiving signaling in a first plurality of resource elements of channel state information associated with a first precoding matrix indicator of a set of precoding matrices jointly with a transmission rank, receiving signaling separately in a second plurality of resource elements of channel state information associated with a second precoding matrix indicator of the set of precoding matrices, and controlling a downlink multiple input-multiple output transmission in accordance with the received signaling.
摘要翻译：根据本发明的示例性实施例，使用与至少一个预编码码本相关联的一组预编码矩阵导出多个输入多输出反馈信息，在第一多个资源元素中发信号通知与第一一组预编码矩阵的预编码矩阵指示符与传输秩联合，并且在第二多个资源元素中分别信令与该组预编码矩阵的第二预编码矩阵指示符相关联的信道状态信息。此外，在与传输秩联合的一组预编码矩阵的第一预编码矩阵指示符的信道状态信息的第一多个资源元素中接收信令，在信道状态的第二多个资源元素中分别接收信令与所述一组预编码矩阵的第二预编码矩阵指示符相关联的信息，以及根据所接收的信令来控制下行链路多输入多输出传输。

2. 发明申请

US20130077707A1 METHOD AND APPARATUS FOR MULITPLE INPUT MULTIPLE OUTPUT DISTRIBUTED ANTENNA ARRAYS 有权
标题翻译：多输入输出多输出天线阵列的方法与装置
公开(公告)号：US20130077707A1
公开(公告)日：2013-03-28
申请号：US13246326
申请日：2011-09-27
申请人： Tommi Koivisto , Mihai Enescu , Timo Roman , Karol Schober
发明人： Tommi Koivisto , Mihai Enescu , Timo Roman , Karol Schober
IPC分类号： H04L27/00
CPC分类号： H04B7/024 , H04B7/0486 , H04B7/0626 , H04L5/0035 , H04L5/0091
摘要： A method, apparatus and computer program product are provided for reporting low rank feedback information for each transmission point up to a maximum rank per transmission point. In this regard, a method includes determining a transmission rank and a precoding matrix for each of at least two transmission points of a plurality of transmission points. A method also includes determining a joint transmission rank based on at least two of the plurality of transmission points. A method also includes selecting a joint transmission precoding matrix based on the determined precoding matrix for each of the at least two transmission points and the determined joint transmission rank. The method further includes causing channel state information “CSI” to be transmitted to an access point, wherein the CSI describes the selected joint transmission precoding matrix.
摘要翻译：提供了一种方法，装置和计算机程序产品，用于报告每个传输点的最低等级的每个传输点的低秩反馈信息。在这方面，一种方法包括确定多个传输点中的至少两个传输点中的每一个的传输秩和预编码矩阵。一种方法还包括基于多个传输点中的至少两个确定联合传输等级。一种方法还包括基于为所述至少两个传输点中的每一个确定的预编码矩阵和所确定的联合传输等级来选择联合传输预编码矩阵。该方法还包括使信道状态信息CSI被发送到接入点，其中CSI描述所选择的联合传输预编码矩阵。

3. 发明申请

US20130058424A1 Codebook Design and Structure for Multi-Granular Feedback 有权
标题翻译：多粒度反馈的码本设计和结构
公开(公告)号：US20130058424A1
公开(公告)日：2013-03-07
申请号：US13639094
申请日：2010-04-06
申请人： Mihai Enescu , Timo Roman , Tommi Koivisto , Timo Lunttila , Shuang Tan , Helka-Liina Määttänen , Kari Pietikäinen
发明人： Mihai Enescu , Timo Roman , Tommi Koivisto , Timo Lunttila , Shuang Tan , Helka-Liina Määttänen , Kari Pietikäinen
IPC分类号： H04B7/06
CPC分类号： H04L25/03923 , H04B7/0465 , H04B7/0469 , H04B7/0486 , H04L25/03936
摘要： A first precoding matrix W1 is selected from a first codebook comprising sets of rank specific precoding matrices. The first codebook is characterized by there being fewer precoding matrices associated with higher ranks than associated with lower ranks, and characterized by precoding matrices associated with ranks above a certain rank all being diagonal matrices. The selected first precoding matrix W1 is used to select a rank-specific second precoding matrix W2 from a second codebook, such that the selected first and second precoding matrices form a joint precoder specific to a desired rank. The second codebook is characterized by differently sized precoding matrices associated with each of N total ranks, in which N is an integer greater than one. Information on the joint precoder is reported to a network node over an uplink transmission channel.
摘要翻译：从包括秩特定预编码矩阵的集合的第一码本中选择第一预编码矩阵W1。第一码本的特征在于，与较低等级相关联的较高等级的预编码矩阵较少，并且其特征在于与一定等级上的等级相关联的预编码矩阵全部为对角矩阵。所选择的第一预编码矩阵W1用于从第二码本中选择秩特定的第二预编码矩阵W2，使得所选择的第一和第二预编码矩阵形成特定于期望等级的联合预编码器。第二码本的特征在于与N个总等级中的每一个相关联的不同大小的预编码矩阵，其中N是大于1的整数。关于联合预编码器的信息通过上行链路传输信道报告给网络节点。

4. 发明授权

US09172438B2 Devices and methods related to controlling UE assumption of interference 有权
标题翻译：与控制UE假设干扰相关的设备和方法
公开(公告)号：US09172438B2
公开(公告)日：2015-10-27
申请号：US13292205
申请日：2011-11-09
申请人： Tommi Koivisto , Helka-Liina Maattanen , Mihai Enescu , Marko Lampinen
发明人： Tommi Koivisto , Helka-Liina Maattanen , Mihai Enescu , Marko Lampinen
IPC分类号： H04J1/16 , H04B7/02 , H04B7/06 , H04L12/28
CPC分类号： H04W24/08 , H04B7/024 , H04B7/0617 , H04B7/0632 , H04L5/0044
摘要： To control UE assumption of interference there is a controller module to control a plurality of transmission points, each constituted by a set of at least one transmit antenna, to transmit data to another device in a coordinated transmission from at least a subset of the plurality of transmission points. The controller module is configured to allocate, to each resource linked to the subset of the plurality of transmission points, an interference contribution parameter that is indicative of an expected interference contribution originating from said transmission point, and to inform said another device of those resources to which the subset of the plurality of transmission points is linked, together with the respective interference contribution parameter allocated to each resource. Another device reports feedback based on signals which are scaled with the respective interference contribution parameter.
摘要翻译：为了控制UE对干扰的假设，存在一个控制器模块，用于控制多个传输点，每个传输点由一组至少一个发射天线构成，以便从多个发射天线的至少一个子集以协调的传输方式将数据传输到另一个设备传输点。控制器模块被配置为向链接到多个传输点的子集的每个资源分配指示源自所述传输点的预期干扰贡献的干扰贡献参数，并将这些资源通知给另一个设备多个传输点的子集与被分配给每个资源的相应的干扰贡献参数一起被链接。另一个设备基于用相应的干扰贡献参数来缩放的信号来报告反馈。

5. 发明授权

US08724572B2 Channel state information feedback 有权
标题翻译：频道状态信息反馈
公开(公告)号：US08724572B2
公开(公告)日：2014-05-13
申请号：US13318107
申请日：2010-04-22
申请人： Karol Schober , Tommi Koivisto , Timo Roman , Mihai Enescu , Timo Lunttila
发明人： Karol Schober , Tommi Koivisto , Timo Roman , Mihai Enescu , Timo Lunttila
IPC分类号： H04W4/00
CPC分类号： H04B7/0663 , H04B7/0626 , H04B7/0632 , H04B7/0639 , H04B17/24 , H04B17/336 , H04W52/143 , H04W52/241
摘要： In an embodiment, state of a wireless channel on which information is received is measured; the measured state is used to select from a codebook a plurality of N codewords which optimize a predefined measure, and first and second codewords of the plurality are reported which best optimizes and next-best optimizes the predefined measure. If by example the above is done by a user equipment UE, in another embodiment the network receives first and second indications, searches a codebook using the first and second indications to find the first and second codewords; and utilizes them to improve the channel state information, such as by interpolating between them to find an estimate of the channel. In examples the channel is a MIMO channel that is estimated at two or more antenna ports, there are interpolation weights sent with the codeword indications, and the interpolating uses a geodesic algorithm.
摘要翻译：在一个实施例中，测量其上接收信息的无线信道的状态; 测量状态用于从码本中选择优化预定义度量的多个N个码字，并且报告多个的第一和第二码字，其最佳地优化并且最佳地优化预定义的度量。如果通过示例，上述是由用户设备UE完成的，在另一个实施例中，网络接收第一和第二指示，使用第一和第二指示搜索码本以找到第一和第二码字; 并且利用它们来改善信道状态信息，例如通过在它们之间进行内插以找到信道的估计。在示例中，信道是在两个或更多个天线端口处估计的MIMO信道，存在用码字指示发送的内插加权，并且内插使用测地算法。

6. 发明申请

US20130064129A1 Apparatus, Method and Computer Program Product for Selecting Beam Group and Subset of Beams in Communication System 有权
标题翻译：通信系统中光束组和子集选择的装置，方法和计算机程序产品
公开(公告)号：US20130064129A1
公开(公告)日：2013-03-14
申请号：US13698419
申请日：2010-06-02
申请人： Tommi Koivisto , Timo Roman , Mihai Enescu , Shuang Tan , Helka-Liina Määttänen
发明人： Tommi Koivisto , Timo Roman , Mihai Enescu , Shuang Tan , Helka-Liina Määttänen
IPC分类号： H04W24/00
CPC分类号： H04B7/0621 , H04B7/0636 , H04B7/065 , H04B7/0695
摘要： An apparatus and method for selecting a beam group and a subset of beams in a communication system are disclosed. The method includes: measuring channel state information (CSI) on a downlink from a base station (920); identifying a selected beam group out of a set of beam groups according to a wideband property of the CSI (930); identifying a selected subset of beams in the selected beam group according to at least one subband (940). Wherein the characteristic of the set of beam groups depends on a transmission rank and the number of beams in the selected subset of beams is equal to the transmission rank. The method further includes: generating encoded feedback information identifying the selected beam group and the selected subset of beams for each subband in a double codebook format (950), transmitting the encoded feedback information to the base station. A computer program product comprising the computer program code which is configured to cause the apparatus to implement above operations is also disclosed.
摘要翻译：公开了一种在通信系统中选择波束组和波束子集的装置和方法。该方法包括：从基站（920）测量下行链路上的信道状态信息（CSI）; 根据所述CSI（930）的宽带属性从一组波束组中识别所选择的波束组; 根据至少一个子带（940）识别所选择的波束组中的选定的波束子集。其中波束组的特性取决于传输等级，并且所选择的波束子集中的波束的数量等于传输等级。该方法还包括：以双码本格式（950）生成识别所选择的波束组和所选择的每个子带子集的编码反馈信息，将编码的反馈信息发送到基站。还公开了一种计算机程序产品，其包括被配置为使该设备实现上述操作的计算机程序代码。

7. 发明授权

US08289917B1 Method and apparatus for defining resource elements for the provision of channel state information reference signals 有权
标题翻译：用于定义用于提供信道状态信息参考信号的资源元素的方法和装置
公开(公告)号：US08289917B1
公开(公告)日：2012-10-16
申请号：US13098873
申请日：2011-05-02
申请人： Tommi Koivisto , Mihai Enescu
发明人： Tommi Koivisto , Mihai Enescu
IPC分类号： H04W4/00 , H04L12/26 , H04J3/16
CPC分类号： H04L1/0027 , H04L1/0026 , H04L5/0048
摘要： Methods, apparatus and computer program products define additional resource elements of a physical resource block (PRB) to be allocated for the provision of channel state information reference signals in a manner that does not create issues relating to backwards compatibility for legacy mobile terminals. A method may include receiving a definition of a plurality of resource elements of a PRB to be allocated for provision of channel state information reference signals. At least some of the plurality of resource elements of the PRB that are allocated for the provision of channel state information reference signals correspond in position to resource elements of the PRB that are interpreted by a different type of mobile terminal to be muted. The method also causes, channel state information reference signals to be received via the plurality of resource elements of the PRB that are allocated for the provision of channel state information reference signals.
摘要翻译：方法，装置和计算机程序产品定义了将被分配用于提供信道状态信息参考信号的物理资源块（PRB）的附加资源元素，其方式不会产生与传统移动终端的向后兼容性有关的问题。一种方法可以包括接收要分配用于提供信道状态信息参考信号的PRB的多个资源元素的定义。被分配用于提供信道状态信息参考信号的PRB的多个资源元素中的至少一些资源元素对应于PRB的资源元素，PRB的资源元素由被静音的不同类型的移动终端解释。该方法还使得经由分配用于提供信道状态信息参考信号的PRB的多个资源元素接收信道状态信息参考信号。

8. 发明授权

US09088322B2 Codebook subset restriction based on codebook grouping 有权
标题翻译：基于码本分组的码本子集限制
公开(公告)号：US09088322B2
公开(公告)日：2015-07-21
申请号：US12751588
申请日：2010-03-31
申请人： Tommi Koivisto , Mihai Enescu , Timo Roman , Karol Schober
发明人： Tommi Koivisto , Mihai Enescu , Timo Roman , Karol Schober
IPC分类号： H04B7/216 , H04L27/28 , H04L27/06 , H04B7/04 , H04B7/06
CPC分类号： H04B7/0482 , H04B7/0465 , H04B7/0469 , H04B7/0478 , H04B7/0639
摘要： A method and apparatus are provided for an apparatus. The apparatus includes at least one memory including computer program code, and at least one processor. The at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to receive an indication of a set of codeword groups to be included in a codebook, and to select a precoding matrix index based on the indicated set of codeword groups in the codebook. The apparatus is also cause to transmit the precoding matrix index to a network node.
摘要翻译：为装置提供了一种方法和装置。该装置包括至少一个包括计算机程序代码的存储器和至少一个处理器。所述至少一个存储器和所述计算机程序代码被配置为与所述至少一个处理器一起使所述设备至少接收要包括在码本中的一组码字组的指示，并且选择预编码矩阵索引基于码本中指示的码字组集合。该装置也是将预编码矩阵索引发送到网络节点的原因。

9. 发明授权

US08855026B2 Cooperative multipoint scheme selection codebook 有权
标题翻译：合作多点方案选择码本
公开(公告)号：US08855026B2
公开(公告)日：2014-10-07
申请号：US13291417
申请日：2011-11-08
申请人： Helka-Liina Maattanen , Mihai Enescu , Tommi Koivisto
发明人： Helka-Liina Maattanen , Mihai Enescu , Tommi Koivisto
IPC分类号： H04L12/28 , H04L12/18 , H04B7/06 , H04B7/02 , H04J1/16
CPC分类号： H04B7/024 , H04B7/063 , H04B7/0632 , H04B7/0639 , H04B7/0689 , H04L12/1868 , H04L12/189 , H04W24/10 , H04W72/04
摘要： A network sends to a user equipment UE a reference signal configuration, and from receiving it the UE selects a codeword identifying a cooperative multipoint CoMP transmission scheme. There is a CoMP scheme selection codebook from which the UE selects the codeword corresponding to its recommended CoMP scheme. The UE sends to the network that codeword which identifies the CoMP transmission scheme, along with the CSI feedback characterizing the CoMP transmission scheme. From that codeword which the network receives it determines the UE's assumed CoMP transmission scheme, which the network uses to determine how the CSI feedback, received from the UE, was calculated by the UE (for example, joint transmission, or dynamic point selection with or without muting, or coordinating scheduling/beamforming). The network uses this information for selecting a CoMP transmission scheme for downlink CoMP transmissions to the UE.
摘要翻译：网络向用户设备UE发送参考信号配置，并且从接收到UE选择标识合作多点CoMP传输方案的码字。存在CoMP方案选择码本，UE从其中选择与其推荐的CoMP方案对应的码字。 UE向网络发送识别CoMP传输方案的码字以及表征CoMP传输方案的CSI反馈。从网络接收的该码字确定UE假定的CoMP传输方案，网络用于确定从UE接收到的CSI反馈如何由UE计算（例如，联合传输，或具有或没有静音或协调调度/波束成形）。网络使用该信息来选择用于向UE的下行链路CoMP传输的CoMP传输方案。

10. 发明授权

US08743992B2 Codebook design and structure for multi-granular feedback 有权
标题翻译： Codebook设计和结构多粒度反馈
公开(公告)号：US08743992B2
公开(公告)日：2014-06-03
申请号：US13639094
申请日：2010-04-06
申请人： Mihai Enescu , Timo Roman , Tommi Koivisto , Timo Lunttila , Shuang Tan , Helka-Liina Määttänen , Kari Pietikäinen
发明人： Mihai Enescu , Timo Roman , Tommi Koivisto , Timo Lunttila , Shuang Tan , Helka-Liina Määttänen , Kari Pietikäinen
IPC分类号： H04L1/02 , H04B7/02
CPC分类号： H04L25/03923 , H04B7/0465 , H04B7/0469 , H04B7/0486 , H04L25/03936
摘要： A first precoding matrix W1 is selected from a first codebook comprising sets of rank specific precoding matrices. The first codebook is characterized by there being fewer precoding matrices associated with higher ranks than associated with lower ranks, and characterized by precoding matrices associated with ranks above a certain rank all being diagonal matrices. The selected first precoding matrix W1 is used to select a rank-specific second precoding matrix W2 from a second codebook, such that the selected first and second precoding matrices form a joint precoder specific to a desired rank. The second codebook is characterized by differently sized precoding matrices associated with each of N total ranks, in which N is an integer greater than one. Information on the joint precoder is reported to a network node over an uplink transmission channel.
摘要翻译：从包括秩特定预编码矩阵的集合的第一码本中选择第一预编码矩阵W1。第一码本的特征在于，与较低等级相关联的较高等级的预编码矩阵较少，并且其特征在于与一定等级上的等级相关联的预编码矩阵全部为对角矩阵。所选择的第一预编码矩阵W1用于从第二码本中选择秩特定的第二预编码矩阵W2，使得所选择的第一和第二预编码矩阵形成特定于期望等级的联合预编码器。第二码本的特征在于与N个总等级中的每一个相关联的不同大小的预编码矩阵，其中N是大于1的整数。关于联合预编码器的信息通过上行链路传输信道报告给网络节点。

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