公开(公告)号：US09344953B2

公开(公告)日：2016-05-17

申请号：US12857383

申请日：2010-08-16

申请人： Mieszko Chmiel ,  Peter Skov ,  Tommi Tapani Koivisto ,  Xiangguang Che ,  Timo Roman

发明人： Mieszko Chmiel ,  Peter Skov ,  Tommi Tapani Koivisto ,  Xiangguang Che ,  Timo Roman

IPC分类号： H04W4/00 ,  H04W48/08 ,  H04W72/04

CPC分类号： H04W48/08 ,  H04L5/0051 ,  H04W72/04

摘要： An apparatus and method for initialization and mapping of reference signals in a communication system. In one embodiment, the apparatus includes a processor and memory including computer program code. The memory and the computer program code are configured to, with the processor, cause the apparatus to generate a reference signal employable with a plurality of physical resource blocks corresponding to a bandwidth of a communication system, and allocate resource elements of an assigned physical resource block from the plurality of physical resource blocks to a user equipment. The memory and the computer program code are further configured to, with the processor, cause the apparatus to generate a dedicated reference signal for the user equipment by allocating elements of the reference signal in accordance with allocated resource elements of the assigned physical resource block.

摘要翻译： 一种用于在通信系统中初始化和映射参考信号的装置和方法。 在一个实施例中，该装置包括包括计算机程序代码的处理器和存储器。 存储器和计算机程序代码被配置为与处理器一起使得该装置产生可以与对应于通信系统的带宽的多个物理资源块一起使用的参考信号，并且分配所分配的物理资源块的资源元素 从多个物理资源块到用户设备。 存储器和计算机程序代码进一步被配置为与处理器一起通过根据所分配的物理资源块的分配的资源元素分配参考信号的元素来使得设备为用户设备生成专用参考信号。

公开(公告)号：US20110038344A1

公开(公告)日：2011-02-17

申请号：US12857383

申请日：2010-08-16

申请人： Mieszko Chmiel ,  Peter Skov ,  Tommi Tapani Koivisto ,  Xiangguang Che ,  Timo Roman

发明人： Mieszko Chmiel ,  Peter Skov ,  Tommi Tapani Koivisto ,  Xiangguang Che ,  Timo Roman

IPC分类号： H04W72/04

CPC分类号： H04W48/08 ,  H04L5/0051 ,  H04W72/04

摘要： An apparatus and method for initialization and mapping of reference signals in a communication system. In one embodiment, the apparatus includes a processor and memory including computer program code. The memory and the computer program code are configured to, with the processor, cause the apparatus to generate a reference signal employable with a plurality of physical resource blocks corresponding to a bandwidth of a communication system, and allocate resource elements of an assigned physical resource block from the plurality of physical resource blocks to a user equipment. The memory and the computer program code are further configured to, with the processor, cause the apparatus to generate a dedicated reference signal for the user equipment by allocating elements of the reference signal in accordance with allocated resource elements of the assigned physical resource block.

摘要翻译： 一种用于在通信系统中初始化和映射参考信号的装置和方法。 在一个实施例中，该装置包括包括计算机程序代码的处理器和存储器。 存储器和计算机程序代码被配置为与处理器一起使得该装置产生可以与对应于通信系统的带宽的多个物理资源块一起使用的参考信号，并且分配所分配的物理资源块的资源元素 从多个物理资源块到用户设备。 存储器和计算机程序代码进一步被配置为与处理器一起通过根据所分配的物理资源块的分配的资源元素分配参考信号的元素来使得设备为用户设备生成专用参考信号。

公开(公告)号：US08625632B2

公开(公告)日：2014-01-07

申请号：US13147352

申请日：2010-01-28

申请人： Timo Roman ,  Cassio Barboza Ribeiro ,  Tommi Tapani Koivisto ,  Lars Erik Lindh

发明人： Timo Roman ,  Cassio Barboza Ribeiro ,  Tommi Tapani Koivisto ,  Lars Erik Lindh

IPC分类号： H04J3/22

CPC分类号： H04B7/0452 ,  H04W72/1289

摘要： Messages containing interference vectors are transmitted efficiently to user equipments over a downlink channel. A pre-coding indicator channel is used for transmission in an over-the-air packet-based communication system. A table of pre-coding matrix indices or pre-coding vector information is transmitted to user equipments configured in a spatially multiplexed multiple user MIMO configuration. The UEs receive the pre-coding vector information that allows them to determine the pre-coding vectors used to communicate in the downlink direction from a MIMO base station to other MIMO UEs in the cell or system. The UEs use this information to actively suppress inter-user interference.

摘要翻译： 包含干扰矢量的消息通过下行链路信道有效地发送到用户设备。 预编码指示符信道用于在空中基于分组的通信系统中的传输。 将预编码矩阵索引或预编码矢量信息的表发送到在空间复用多用户MIMO配置中配置的用户设备。 UE接收预编码矢量信息，其允许它们确定用于在下行链路方向上从MIMO基站到小区或系统中的其他MIMO UE进行通信的预编码向量。 UE使用该信息来主动抑制用户间干扰。

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。

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。

公开(公告)号：US20130010880A1

公开(公告)日：2013-01-10

申请号：US13176169

申请日：2011-07-05

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 ,  H03D1/00

CPC分类号： H04B7/065 ,  H04B7/024 ,  H04B7/0465 ,  H04B7/0469 ,  H04B7/0639 ,  H04B7/0665 ,  H04B7/0691 ,  H04B7/10

摘要： There is provided a mechanism providing a flexible feedback framework operating in different scenarios, such as heterogeneous network deployments. Antenna information are sent from a scheduler element to a UE, the antenna information including information indicating a grouping of one or more antenna in closely spaced antenna groups of one or more transmit points. The UE selects at least one of precoding codewords and amplitude weight parameters for each closely spaced antenna group, and determines information related to a sub-band precoder and a transmit point related combiner. The processing results are indicated to the scheduler by means of sending indices related to a wide-band long-term precoder and a sub-band short-term precoder. The scheduler processes these results for determining a joint precoder.

摘要翻译： 提供了一种提供在不同场景中操作的灵活反馈框架的机制，例如异构网络部署。 天线信息从调度器元件发送到UE，天线信息包括指示一个或多个发射点的紧密间隔的天线组中的一个或多个天线的分组的信息。 UE为每个紧密间隔的天线组选择预编码码字和幅度权重参数中的至少一个，并且确定与子带预编码器和发射点相关组合器相关的信息。 处理结果通过发送与宽带长期预编码器和子带短期预编码器相关的索引指示给调度器。 调度器处理这些结果以确定联合预编码器。

公开(公告)号：US08825069B2

公开(公告)日：2014-09-02

申请号：US13614052

申请日：2012-09-13

申请人： Tommi Koivisto ,  Timo Roman

发明人： Tommi Koivisto ,  Timo Roman

IPC分类号： H04W72/00

CPC分类号： H04L5/0048 ,  H04L5/0023 ,  H04L5/0035 ,  H04L25/0224

摘要： Examples are described relating to methods, apparatus and computer programs for configuring a user equipment in a cellular wireless network. Certain exemplary methods involve receiving (440), at the user equipment (430), control information regarding one or more of a plurality of channel-state information (CSI) reference signals. The plurality of CSI reference signals are receivable by the user equipment (430) from one or more of a plurality of antenna ports that form part of the cellular wireless network, the plurality of CSI reference signal being associated with corresponding antenna ports. The control information is for use in configuration of the user equipment (430) and is received over a radio communications downlink from a node (410) in the cellular wireless network. If estimation of one or more radio communication channels at the user equipment (430) is configured (450) based on the received control information, improvements in demodulation and CSI feedback are achieved.

摘要翻译： 描述了关于在蜂窝无线网络中配置用户设备的方法，装置和计算机程序的示例。 某些示例性方法涉及在用户设备（430）处接收（440）关于多个信道状态信息（CSI）参考信号中的一个或多个的控制信息。 多个CSI参考信号可由用户设备（430）从形成蜂窝无线网络的一部分的多个天线端口中的一个或多个接收，多个CSI参考信号与对应的天线端口相关联。 控制信息用于配置用户设备（430），并通过无线通信下行链路从蜂窝无线网络中的节点（410）接收。 如果基于所接收的控制信息来配置用户设备（430）中的一个或多个无线电通信信道的估计（450），则解调和CSI反馈的改进被实现。

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。

公开(公告)号：US08494467B2

公开(公告)日：2013-07-23

申请号：US13180791

申请日：2011-07-12

申请人： Tero Henttonen ,  Timo Roman ,  Chris Callender ,  Anders Ostergaard Nielsen ,  Kaj Jansen

发明人： Tero Henttonen ,  Timo Roman ,  Chris Callender ,  Anders Ostergaard Nielsen ,  Kaj Jansen

IPC分类号： H04B17/02

CPC分类号： H04W52/52

摘要： The invention teaches a solution, for example, for Long Term Evolution (LTE) networks. The solution comprises determining a measurement pattern for at least one automatic gain control tracking loop when resource restrictions have been configured for a user equipment, the resource restrictions comprising at least one measurement restriction pattern, wherein each automatic gain control tracking loop is associated with at least one measurement restriction pattern; and performing automatic gain control measurements according to the measurement patterns of the at least one automatic gain control tracking loop.

摘要翻译： 本发明教导了例如长期演进（LTE）网络的解决方案。 该解决方案包括当为用户设备配置资源限制时确定至少一个自动增益控制跟踪环路的测量模式，该资源限制包括至少一个测量限制模式，其中每个自动增益控制跟踪环路至少与 一种测量限制模式; 以及根据所述至少一个自动增益控制跟踪环路的测量模式执行自动增益控制测量。

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。