公开(公告)号：US20110176517A1

公开(公告)日：2011-07-21

申请号：US12900628

申请日：2010-10-08

申请人： Yang Hu ,  David Astely ,  David Hammarwall ,  George Jöngren ,  Xinghua Song ,  Jianfeng Wang

发明人： Yang Hu ,  David Astely ,  David Hammarwall ,  George Jöngren ,  Xinghua Song ,  Jianfeng Wang

IPC分类号： H04W72/04

CPC分类号： H04W28/0263 ,  H04J11/00 ,  H04L5/0026 ,  H04L5/0048 ,  H04W72/042 ,  H04W72/0453 ,  H04W72/06

摘要： The present invention provides a unified, rank independent mapping between antenna ports and group/code pairs. Each antenna port is uniquely associated with one code division multiplexing (CDM) group and one orthogonal cover code (OCC). The mapping between antenna ports and group/code pairs is chosen such that, for a given antenna port, the CDM group and OCC will be the same for every transmission rank.

摘要翻译： 本发明提供天线端口和组/码对之间的统一的等级独立映射。 每个天线端口与一个码分多路复用（CDM）组和一个正交覆盖码（OCC）唯一相关。 选择天线端口和组/码对之间的映射，使得对于给定的天线端口，CDM组和OCC对于每个传输等级将是相同的。

公开(公告)号：US20110122968A1

公开(公告)日：2011-05-26

申请号：US12951270

申请日：2010-11-22

申请人： George Jöngren ,  David Hammarwall

发明人： George Jöngren ,  David Hammarwall

IPC分类号： H04L25/49

CPC分类号： H04B7/0456 ,  H04B7/0617 ,  H04B7/0639 ,  H04B7/0656 ,  H04B7/0663 ,  H04L25/03343 ,  H04L25/49 ,  H04L2025/03426 ,  H04L2025/03808

摘要： According to one or more aspects, the teachings herein improve user equipment (UE) Channel State Information (CSI) feedback, by letting the precoder part of a CSI feedback report comprise factorized precoder feedback. In one or more such embodiments, the factorized precoder feedback corresponds to at least two precoder matrices, including a recommended “conversion” precoder matrix and a recommended “tuning” precoder matrix. The recommended conversion precoder matrix restricts the number of channel dimensions considered by the recommended tuning precoder matrix and, in turn, the recommended tuning precoder matrix matches the recommended precoder matrix to an effective channel that is defined in part by said recommended conversion precoder matrix.

摘要翻译： 根据一个或多个方面，本文的教导通过使CSI反馈报告的预编码器部分包含分解预编码器反馈来改善用户设备（UE）信道状态信息（CSI）反馈。 在一个或多个这样的实施例中，分解预编码器反馈对应于至少两个预编码器矩阵，包括推荐的“转换”预编码器矩阵和推荐的“调谐”预编码器矩阵。 推荐的转换预编码器矩阵限制了推荐的调谐预编码器矩阵考虑的通道尺寸数量，反过来，推荐的调谐预编码器矩阵将推荐的预编码器矩阵与由所述推荐的转换预编码器矩阵部分定义的有效通道相匹配。

公开(公告)号：US20100284484A1

公开(公告)日：2010-11-11

申请号：US12812159

申请日：2008-05-07

申请人： George Jöngren ,  David Hammarwall ,  Patrick Svedman

发明人： George Jöngren ,  David Hammarwall ,  Patrick Svedman

IPC分类号： H04B7/02 ,  H04L27/00

CPC分类号： H04B7/0639 ,  H04B7/10 ,  H04L2025/03426

摘要： Data is transmitted over multiple input multiple output (MIMO) channels. Plural bit streams are modulated into multiple data symbol vectors. Each vector has a transmission rank with one vector for each MIMO channel. Transmission rank is the number of elements in a data symbol vector corresponding to the number of data streams being transmitted in parallel over each MIMO channel. The multiple data symbol vectors are preceded into multiple precoded symbol vectors using a plurality of precoder cycling sets, one set for each transmission rank including multiple different precoders. The precoders in each precoder cycling set are well-separated with respect to a plurality of distance measures. The precoding includes precoding each data symbol vector of a transmission rank with a precoder belonging to the precoder cycling set of that transmission rank. The precoded symbol vectors are then transmitted over the MIMO channels.

摘要翻译： 数据通过多输入多输出（MIMO）信道传输。 多个比特流被调制成多个数据符号向量。 每个矢量具有每个MIMO信道具有一个向量的传输秩。 传输等级是对应于在每个MIMO信道上并行发送的数据流的数量的数据符号向量中的元素的数量。 多个数据符号向量在多个预编码符号向量之前，使用多个预编码器循环组，每个包含多个不同的预编码器的每个传输等级集合。 每个预编码器循环组中的预编码器相对于多个距离测量被很好地分离。 预编码包括用属于该传输等级的预编码器循环组的预编码器来预编码传输秩的每个数据符号向量。 然后通过MIMO信道发送预编码的符号向量。

公开(公告)号：US09591655B2

公开(公告)日：2017-03-07

申请号：US14398873

申请日：2012-05-16

申请人： David Hammarwall ,  Svante Bergman ,  Jonas Fröberg Olsson ,  George Jöngren

发明人： David Hammarwall ,  Svante Bergman ,  Jonas Fröberg Olsson ,  George Jöngren

IPC分类号： H04W72/08 ,  H04J11/00 ,  H04L1/00 ,  H04L1/20 ,  H04B17/382 ,  H04L5/00 ,  H04B7/02 ,  H04W24/10 ,  H04B17/345

CPC分类号： H04W72/082 ,  H04B7/024 ,  H04B17/345 ,  H04B17/382 ,  H04J11/0053 ,  H04L1/00 ,  H04L1/0026 ,  H04L1/0077 ,  H04L1/20 ,  H04L5/0048 ,  H04W24/10

摘要： The invention relates to methods and arrangements in a transmitting node for enabling a receiving node to perform measurements on interference caused by transmissions from at least one transmission point controlled by the transmitting node on receptions at the receiving node. The transmitting and receiving nodes are comprised in a wireless communications system. The transmitting node determines an interference measurement resource, IMR, for the receiving node. The receiving node is expected to measure interference on the IMR. The transmitting node then transmits at least one interfering signal on the IMR. The at least one interfering signal is not expected to be decoded or coherently measured upon by any node served by the transmitting node.

摘要翻译： 本发明涉及一种发送节点中的方法和装置，用于使接收节点能够对由接收节点的接收上的由发送节点控制的至少一个发送点的传输引起的干扰执行测量。 发送和接收节点包括在无线通信系统中。 发射节点确定接收节点的干扰测量资源IMR。 接收节点有望测量IMR上的干扰。 发射节点然后在IMR上发送至少一个干扰信号。 不期望至少一个干扰信号被由发射节点服务的任何节点解码或相干测量。

公开(公告)号：US08705574B2

公开(公告)日：2014-04-22

申请号：US13104373

申请日：2011-05-10

申请人： David Hammarwall ,  George Jöngren

发明人： David Hammarwall ,  George Jöngren

IPC分类号： H04J4/00

CPC分类号： H04W72/0406 ,  H04B7/04 ,  H04B7/0413 ,  H04B7/0456 ,  H04B7/0486 ,  H04B7/0669 ,  H04L1/003 ,  H04L1/0071 ,  H04L1/0079 ,  H04L1/1664 ,  H04L1/1671 ,  H04L5/00 ,  H04L5/0053 ,  H04L5/0057 ,  H04L5/0091 ,  H04L25/03929 ,  H04W72/04 ,  H04W72/0413

摘要： A method for wirelessly transmitting user data and at least a first type of control information using a plurality of transmission layers including encoding bits of a first type of control information to form one or more control codewords and encoding bits of user data to form one or more user data codewords. The method also includes generating a plurality of vector symbols based on the control codewords and the user data codewords. Each vector symbol includes a plurality of modulation symbols that are each associated with a transmission layer over which the associated modulation symbol will be transmitted. Generating the plurality of vector symbols includes interleaving bits of the one or more control codewords and bits of the one or more user data codewords so that the first type of control information is carried in modulation symbols associated with the same transmission layers in all the vector symbols transmitted during the subframe that carry the first type of control information. The method also includes transmitting the plurality of vector symbols to a receiver over a plurality of transmission layers.

摘要翻译： 一种用于使用包括第一类型的控制信息的编码比特的多个传输层来无线发送用户数据和至少第一类型的控制信息以形成一个或多个控制码字并且对用户数据的比特进行编码以形成一个或多个 用户数据码字。 该方法还包括基于控制码字和用户数据码字生成多个矢量符号。 每个矢量符号包括多个调制符号，每个调制符号与传输层相关联，在该传输层上将传送相关联的调制符号。 产生多个向量符号包括交织一个或多个控制码字的比特和一个或多个用户数据码字的比特，使得第一类型的控制信息在与所有向量符号中的相同传输层相关联的调制符号中携带 在携带第一类型的控制信息的子帧期间发送。 该方法还包括通过多个传输层将多个矢量符号发射到接收机。

公开(公告)号：US08699435B2

公开(公告)日：2014-04-15

申请号：US13097260

申请日：2011-04-29

申请人： David Hammarwall ,  George Jöngren

发明人： David Hammarwall ,  George Jöngren

IPC分类号： H04W4/00

CPC分类号： H04L5/0042 ,  H04L1/003 ,  H04L1/0079 ,  H04L1/1664 ,  H04L1/1671 ,  H04L5/0016 ,  H04L5/0044 ,  H04L5/0053

摘要： A method for wirelessly transmitting data and control information using a plurality of transmission layers includes determining a number of bits in one or more user data codewords to be transmitted during a subframe and calculating a number of control vector symbols to allocate to control information during the subframe. The number of control vector symbols is calculated based at least in part on the number of bits in the one or more user data codewords to be transmitted during the subframe and an estimate of the number of vector symbols onto which the one or more user data codewords will be mapped. The estimate of the number of vector symbols depends, at least in part, on the number of control vector symbols to be allocated to control information. The method also includes mapping one or more control codewords to the calculated number of control vector symbols and transmitting vector symbols carrying the one or more user data codewords and the one or more control codewords over the plurality of transmission layers during the subframe.

摘要翻译： 一种用于使用多个传输层无线传输数据和控制信息的方法包括确定在子帧期间要发送的一个或多个用户数据码字中的比特数，并且计算在子帧期间分配给控制信息的多个控制向量符号 。 至少部分地基于在子帧期间要发送的一个或多个用户数据码字中的比特数和对一个或多个用户数据码字所在的向量符号的数量的估计来计算控制向量符号的数量 将被映射。 矢量符号数量的估计至少部分取决于要分配给控制信息的控制向量符号的数量。 该方法还包括将一个或多个控制码字映射到所计算的控制向量符号的数量，以及在子帧期间在多个传输层上传送携带一个或多个用户数据码字和一个或多个控制码字的矢量符号。

公开(公告)号：US20140073313A1

公开(公告)日：2014-03-13

申请号：US13877920

申请日：2013-03-14

申请人： David Hammarwall ,  George Jöngren ,  Svante Bergman

发明人： David Hammarwall ,  George Jöngren ,  Svante Bergman

IPC分类号： H04W24/02

CPC分类号： H04W24/02 ,  H04B7/024 ,  H04B7/0417 ,  H04B7/0626 ,  H04B17/0085 ,  H04B17/345 ,  H04L1/0026

摘要： A system and method for improving the link adaptation in a wireless communication system is disclosed. User Equipment (UE) forms an interference hypothesis by amending a measured interference and noise by artificially injecting, to the measured interference and noise, interference corresponding to at least one emulated interfering isotropic signal that is virtually transmitted over an associated estimated effective channel. The UE further determines at least one channel state information (CSI) report based on the interference hypothesis, and transmits the CSI report to the network.

摘要翻译： 公开了一种用于改善无线通信系统中的链路自适应的系统和方法。 用户设备（UE）通过修改测量的干扰和噪声来形成干扰假设，通过人为地将测量到的干扰和噪声干扰对应于在相关联的估计有效信道上虚拟传输的至少一个仿真干扰各向同性信号。 UE还基于干扰假设确定至少一个信道状态信息（CSI）报告，并将CSI报告发送到网络。

公开(公告)号：US20110249637A1

公开(公告)日：2011-10-13

申请号：US13080826

申请日：2011-04-06

申请人： David Hammarwall ,  George Jöngren

发明人： David Hammarwall ,  George Jöngren

IPC分类号： H04W72/04

CPC分类号： H04B7/0456 ,  H04B7/0465 ,  H04B7/0469 ,  H04B7/0478 ,  H04B7/0634 ,  H04B7/0639 ,  H04B7/0647 ,  H04B7/065 ,  H04B7/10 ,  H04L5/0044 ,  H04W72/0413

摘要： One aspect of the teachings presented herein provides advantages for sending precoder selection feedback from a transceiver to another transceiver, for use by the other transceiver as precoding recommendations. The transceiver generates two types of precoder selection feedback, where one type uses a smaller signaling payload than the other and therefore provides a distinct reduction in the signaling overhead associated with reporting precoding recommendations. The transceiver uses the reduced-overhead type of reporting when reporting at certain times, or on certain channels, or in response to control signaling. In one example, a UE in an LTE network sends precoder information to an eNodeB on the PUCCH by sending smaller-range index values that index only a subset of precoders, but sends full-range index values when reporting on the PUSCH, which index a larger set of precoders.

摘要翻译： 本文提供的教导的一个方面提供了将预编码器选择反馈从收发器发送到另一收发器的优点，供另一收发器用作预编码建议。 收发器产生两种类型的预编码器选择反馈，其中一种类型使用比另一种更小的信令有效载荷，因此提供与报告预编码建议相关联的信令开销的明显减少。 收发器在特定时间或某些频道上报告时，或响应于控制信令，使用降低开销类型的报告。 在一个示例中，LTE网络中的UE通过发送仅索引预编码器子集的较小范围的索引值来向PUCCH上的eNodeB发送预编码信息，但是当在PUSCH上报告时发送全范围索引值 较大套预编码器。

公开(公告)号：US09337970B2

公开(公告)日：2016-05-10

申请号：US13877799

申请日：2013-03-13

申请人： David Hammarwall ,  Svante Bergman ,  George Jöngren

发明人： David Hammarwall ,  Svante Bergman ,  George Jöngren

IPC分类号： H04L5/00 ,  H04L1/00 ,  H04W24/10

CPC分类号： H04W24/10 ,  H04B17/345 ,  H04L1/0026 ,  H04L5/0032 ,  H04L5/0035 ,  H04L5/0048 ,  H04L5/0091

摘要： A system and method for providing an eNodeB with the flexibility to configure a Channel State Information (CSI) report to match a specific Coordinated Multipoint (CoMP) transmission hypothesis, which is a candidate for a downlink transmission to a User Equipment (UE) is disclosed. A UE receives, from the eNodeB, a configuration message that specifies a CSI report. The CSI report is specified by a particular interference hypothesis and a particular desired signal hypothesis corresponding to data transmission over at least one effective channel characterized by a specific reference signal. The UE estimates interference according to the interference hypothesis, and/or estimates at least one effective channel by performing measurements on the specific reference signal, and determines a CSI report based on the interference estimation and on the estimated effective channel. The UE also transmits the CSI report to the eNodeB.

摘要翻译： 公开了一种用于向eNodeB提供配置信道状态信息（CSI）报告以匹配作为向用户设备（UE）的下行链路传输的候选者的特定协调多点（CoMP）传输假设）的系统和方法， 。 UE从eNodeB接收指定CSI报告的配置消息。 CSI报告由特定干扰假设和对应于通过特定参考信号表征的至少一个有效信道上的数据传输的特定期望信号假设来指定。 UE根据干扰假设估计干扰，和/或通过对特定参考信号执行测量来估计至少一个有效信道，并且基于干扰估计和估计的有效信道来确定CSI报告。 UE还向eNodeB发送CSI报告。

公开(公告)号：US09179332B2

公开(公告)日：2015-11-03

申请号：US13877920

申请日：2013-03-14

申请人： David Hammarwall ,  Svante Bergman ,  George Jöngren

发明人： David Hammarwall ,  Svante Bergman ,  George Jöngren

IPC分类号： H04W24/02 ,  H04B7/06 ,  H04L1/00 ,  H04B7/02 ,  H04B7/04 ,  H04B17/00 ,  H04B17/345

CPC分类号： H04W24/02 ,  H04B7/024 ,  H04B7/0417 ,  H04B7/0626 ,  H04B17/0085 ,  H04B17/345 ,  H04L1/0026

摘要： A system and method for improving the link adaptation in a wireless communication system is disclosed. User Equipment (UE) forms an interference hypothesis by amending a measured interference and noise by artificially injecting, to the measured interference and noise, interference corresponding to at least one emulated interfering isotropic signal that is virtually transmitted over an associated estimated effective channel. The UE further determines at least one channel state information (CSI) report based on the interference hypothesis, and transmits the CSI report to the network.

摘要翻译： 公开了一种用于改善无线通信系统中的链路自适应的系统和方法。 用户设备（UE）通过修改测量的干扰和噪声来形成干扰假设，通过人为地将测量到的干扰和噪声干扰对应于在相关联的估计有效信道上虚拟传输的至少一个仿真干扰各向同性信号。 UE还基于干扰假设确定至少一个信道状态信息（CSI）报告，并将CSI报告发送到网络。