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。

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。

公开(公告)号：US08599960B2

公开(公告)日：2013-12-03

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。

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：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：US20120026964A1

公开(公告)日：2012-02-02

申请号：US13260637

申请日：2010-03-26

申请人： Tommi Koivisto ,  Timo Roman ,  Mihai Enescu ,  Karol Schober

发明人： Tommi Koivisto ,  Timo Roman ,  Mihai Enescu ,  Karol Schober

IPC分类号： H04W72/04

CPC分类号： H04B7/0452 ,  H04J11/0023 ,  H04L5/0023 ,  H04L5/0032 ,  H04L5/0035 ,  H04L5/0053 ,  H04L25/0204 ,  H04L25/0226 ,  H04W48/08 ,  H04W48/16 ,  H04W72/046

摘要： An apparatus, method and system for signaling of interfering spatial layers with dedicated reference signals in a communication system. In one embodiment, an apparatus includes a processor (520) and memory (550) including computer program code. The memory (550) and the computer program code are configured to, with the processor (520), cause the apparatus to receive an allocation of communication resources and a dedicated reference signal index for a spatial layer associated with the communication resources, receive information about spatial interference for a user equipment, and identify spatial interference with respect to at least one communication resource within the communication resources allocated to the user equipment in another spatial layer.

摘要翻译： 一种用于在通信系统中用专用参考信号发送干扰空间层的装置，方法和系统。 在一个实施例中，一种装置包括包括计算机程序代码的处理器（520）和存储器（550）。 存储器（550）和计算机程序代码被配置为与处理器（520）一起使得设备接收通信资源的分配和与通信资源相关联的空间层的专用参考信号索引，接收关于 对用户设备的空间干扰，以及针对分配给另一空间层中的用户设备的通信资源中的至少一个通信资源来识别空间干扰。

公开(公告)号：US20110243098A1

公开(公告)日：2011-10-06

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

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：US08638867B2

公开(公告)日：2014-01-28

申请号：US13095241

申请日：2011-04-27

申请人： Timo E. Roman ,  Tommi T. Koivisto ,  Mihai Enescu ,  Karol Schober

发明人： Timo E. Roman ,  Tommi T. Koivisto ,  Mihai Enescu ,  Karol Schober

IPC分类号： H04K1/10

CPC分类号： H04B7/024 ,  H04B7/0417 ,  H04B7/0465 ,  H04B7/0626 ,  H04B17/21

摘要： Systems and techniques for communication using coordinated multi-point transmission. In one embodiment, an apparatus comprises at least one processor and a memory storing a set of computer instructions, configured. The processor is configured to cause the apparatus to determine a linear phase variation between at least first and second transmissions from first and second transmission points based at least in part on a propagation delay difference between the first and second transmissions, and transmit the phase variation information for at least the first and the second transmissions. An apparatus configured to operate as a transmission point in a network receives linear phase variation information indicating phase variation experienced by at least one user equipment resulting from a propagation delay difference between at least the apparatus and a second apparatus operating as a second transmission point and manages transmission so as to control phase variation resulting from the propagation delay difference.

摘要翻译： 使用协调多点传输的通信系统和技术。 在一个实施例中，一种装置包括至少一个处理器和存储一组计算机指令的存储器。 处理器被配置为使得设备至少部分地基于第一和第二传输之间的传播延迟差异来确定来自第一和第二传输点的至少第一和第二传输之间的线性相位变化，并且传送相位变化信息 用于至少第一和第二传输。 被配置为作为网络中的传输点操作的装置接收指示由至少该设备与作为第二传输点操作的第二设备之间的传播延迟差异所产生的至少一个用户设备所经历的相位变化的线性相位变化信息，并管理 以便控制由传播延迟差引起的相位变化。

公开(公告)号：US20120275507A1

公开(公告)日：2012-11-01

申请号：US13095241

申请日：2011-04-27

申请人： Timo E. Roman ,  Tommi T. Koivisto ,  Mihai Enescu ,  Karol Schober

发明人： Timo E. Roman ,  Tommi T. Koivisto ,  Mihai Enescu ,  Karol Schober

IPC分类号： H04W24/04 ,  H04B17/00

CPC分类号： H04B7/024 ,  H04B7/0417 ,  H04B7/0465 ,  H04B7/0626 ,  H04B17/21

摘要： Systems and techniques for communication using coordinated multi-point transmission. In one embodiment, an apparatus comprises at least one processor and a memory storing a set of computer instructions, configured. The processor is configured to cause the apparatus to determine a linear phase variation between at least first and second transmissions from first and second transmission points based at least in part on a propagation delay difference between the first and second transmissions, and transmit the phase variation information for at least the first and the second transmissions. An apparatus configured to operate as a transmission point in a network receives linear phase variation information indicating phase variation experienced by at least one user equipment resulting from a propagation delay difference between at least the apparatus and a second apparatus operating as a second transmission point and manages transmission so as to control phase variation resulting from the propagation delay difference.

摘要翻译： 使用协调多点传输的通信系统和技术。 在一个实施例中，一种装置包括至少一个处理器和存储一组计算机指令的存储器。 处理器被配置为使得设备至少部分地基于第一和第二传输之间的传播延迟差异来确定来自第一和第二传输点的至少第一和第二传输之间的线性相位变化，并且传送相位变化信息 用于至少第一和第二传输。 被配置为作为网络中的传输点操作的装置接收指示由至少该设备与作为第二传输点操作的第二设备之间的传播延迟差异所产生的至少一个用户设备所经历的相位变化的线性相位变化信息，并管理 以便控制由传播延迟差引起的相位变化。

公开(公告)号：US20110170427A1

公开(公告)日：2011-07-14

申请号：US12685103

申请日：2010-01-11

申请人： Tommi T. Koivisto ,  Mihai Enescu ,  Timo E. Roman ,  Timo E. Lunttila ,  Karol Schober

发明人： Tommi T. Koivisto ,  Mihai Enescu ,  Timo E. Roman ,  Timo E. Lunttila ,  Karol Schober

IPC分类号： H04L12/26

CPC分类号： H04B7/063 ,  H04B7/022 ,  H04B7/0413 ,  H04B7/0478

摘要： From one perspective, a fixed rank r (r>1 is an integer) is determined from received signaling; at least one codeword of rank r is selected from a codebook of antenna weights for controlling inter-cell interference between a serving cell and a neighboring cell; and the selected at least one codeword of rank-r is reported to the serving cell. From a different perspective, the fixed rank r is derived and signaled to user equipments UEs operating in a serving cell; there is received from a UE in the serving cell a report indicating the at least one rank-r codeword; and an indication of the at least one rank-r codeword is forwarded to the neighboring cell. Methods, apparatus and computer programs are detailed as well as embodiments in which different ranks are used for different neighboring cells and narrowband/wideband PMI reporting which can also be different for different neighboring cells.

摘要翻译： 从一个角度来看，固定秩r（r> 1是整数）是从接收到的信令确定的; 从用于控制服务小区和相邻小区之间的小区间干扰的天线权重的码本中选择秩r的至少一个码字; 并且将所选择的rank-r的至少一个码字报告给服务小区。 从不同的角度来看，固定秩r被导出并发送给在服务小区中操作的用户设备UE; 在服务小区中从UE接收到指示至少一个秩r码字的报告; 并且将至少一个秩r码字的指示转发到相邻小区。 详细的方法，装置和计算机程序以及不同等级用于不同相邻小区和窄带/宽带PMI报告的实施例，对于不同的相邻小区也可以是不同的。