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。

公开(公告)号：US08731001B2

公开(公告)日：2014-05-20

申请号：US13149067

申请日：2011-05-31

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： H04W56/00

CPC分类号： H04W56/004 ,  H04B7/024

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. The processor is configured to cause the apparatus to receive information relating to a propagation delay variation between at least a first transmission and a second transmission received at a user equipment. The first transmission is received from a first transmission point and the second transmission is received from a second transmission. The information relating to the propagation delay variation is evaluated and, based on the result of the evaluation, a determination is made as to whether the second transmission point is acceptable as a participant in a cooperative multi-point joint processing transmission to the user equipment.

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，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接收与在用户设备处接收的至少第一传输和第二传输之间的传播延迟变化​​有关的信息。 从第一传输点接收第一传输，并且从第二传输接收第二传输。 评估与传播延迟变化​​有关的信息，并且基于评估结果，确定第二传输点是否可接受为用户设备的协作多点联合处理传输中的参与者。

公开(公告)号：US20130121312A1

公开(公告)日：2013-05-16

申请号：US13299810

申请日：2011-11-18

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： H04W72/10

CPC分类号： H04B7/0486 ,  H04B7/0452 ,  H04B7/0639 ,  H04B7/065 ,  H04B7/0689

摘要： Signalling information relating to Multiple Input Multiple Output MIMO channel state information characteristics that a user equipment UE determines to be highest priority for a downlink is transmitted uplink from a the UE to a node of a cellular wireless network. The UE receives an indicator from the node indicating a preferred basis of the highest priority signalling information. The UE compiles the highest priority signalling information according to the preferred basis, and sends the compiled signalling information to the node. If the UE determines that the number of MIMO layers preferred for use for the downlink is one, then signalling information is sent in different messages indicating a first and second codeword respectively, the first codeword being selected to be a closest codeword to an intended MIMO channel state information characteristic, and the second characteristic is selected to be a less close codeword.

摘要翻译： 与用户设备UE确定为下行链路的最高优先级的多输入多输出MIMO信道状态信息特性相关的信令信息从UE向蜂窝无线网络的节点传输。 UE从节点接收指示最高优先级信令信息的优选基础的指示符。 UE根据优选的基础编译最高优先级的信令信息，并将编译的信令信息发送给节点。 如果UE确定优选用于下行链路的MIMO层的数量为1，则分别在指示第一和第二码字的不同消息中发送信令信息，第一码字被选择为预期MIMO信道的最近码字 状态信息特性，并且第二特性被选择为不太接近的码字。

公开(公告)号：US20120307704A1

公开(公告)日：2012-12-06

申请号：US13149067

申请日：2011-05-31

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： H04W56/00

CPC分类号： H04W56/004 ,  H04B7/024

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. The processor is configured to cause the apparatus to receive information relating to a propagation delay variation between at least a first transmission and a second transmission received at a user equipment. The first transmission is received from a first transmission point and the second transmission is received from a second transmission. The information relating to the propagation delay variation is evaluated and, based on the result of the evaluation, a determination is made as to whether the second transmission point is acceptable as a participant in a cooperative multi-point joint processing transmission to the user equipment.

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，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接收与在用户设备处接收的至少第一传输和第二传输之间的传播延迟变化​​有关的信息。 从第一传输点接收第一传输，并且从第二传输接收第二传输。 评估与传播延迟变化​​有关的信息，并且基于评估结果，确定第二传输点是否可接受为用户设备的协作多点联合处理传输中的参与者。

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。