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11. 发明授权

US09467211B2 Induced incoherency for joint transmission 有权
标题翻译：诱导联合传播的不一致性
公开(公告)号：US09467211B2
公开(公告)日：2016-10-11
申请号：US13577467
申请日：2012-06-15
申请人： David Hammarwall , Svante Bergman
发明人： David Hammarwall , Svante Bergman
IPC分类号： H04B7/02 , H04L5/00 , H04J11/00 , H04J13/00 , H04W72/12 , H04B7/06
CPC分类号： H04B7/024 , H04B7/063 , H04B7/0639 , H04B7/0676 , H04B7/0682 , H04J11/0053 , H04J13/004 , H04L5/0016 , H04L5/0035
摘要： Frequency-selective phase shifts are applied to signals transmitted from multiple transmission points involved in a coordinated (joint) transmission to a given UE. An eNodeB or other network node controlling the joint transmission artificially induces frequency selectivity between signals received by the UE in joint transmission from different transmission points, so as to ensure an even balance between constructive and destructive combination over frequency. By applying frequency-selective phase shifts (e.g., pseudo-random phase shifts) to the different transmission points that perform joint transmission, the signals from the different transmission points are forced to combine at the UE in a non-coherent manner. As a result, uncertainty in how the signals combine is drastically reduced, since it can be expected that the signals will always combine incoherently. The reduced uncertainty translates to reduced back-off offset in the link adaptation, and thus in an increased throughput.
摘要翻译：频率选择性相移被应用于从涉及协调（联合）传输到给定UE的多个传输点发送的信号。控制联合传输的eNodeB或其他网络节点在不同传输点的联合传输中人为地诱导由UE接收的信号之间的频率选择性，以便确保在频率上的建设性和破坏性组合之间的均衡。通过对执行联合传输的不同传输点应用频率选择性相移（例如，伪随机相移），来自不同传输点的信号被强制以不相干的方式在UE处组合。结果，信号组合的不确定性大大降低，因为可以预期信号将总是不连贯地组合。减少的不确定性转化为链路适配中的减小偏移，并且因此增加的吞吐量。

12. 发明申请

US20140112173A1 Configuration of Coordinated Multipoint Transmission Hypotheses for Channel State Information Reporting 有权
标题翻译：通道状态信息报告协调多点传输假设的配置
公开(公告)号：US20140112173A1
公开(公告)日：2014-04-24
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 , 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。

13. 发明申请

US20130329772A1 DATA TRANSMISSION IN A MULTIPLE ANTENNA SYSTEM 有权
标题翻译：数据传输在多个天线系统中
公开(公告)号：US20130329772A1
公开(公告)日：2013-12-12
申请号：US13520294
申请日：2012-06-08
申请人： Niklas Wernersson , David Hammarwall , Svante Bergman
发明人： Niklas Wernersson , David Hammarwall , Svante Bergman
IPC分类号： H04B7/04
CPC分类号： H01Q3/00 , H04B7/0417 , H04B7/0469 , H04B7/0617 , H04B7/0626 , H04B7/0632
摘要： Some of the example embodiments presented herein are directed towards an eNodeB (401), and corresponding method therein, for providing data transmission in a multiple antenna system. The eNodeB (401) may be configured to receive a plurality of signal quality assessments and a CSI report from a user equipment. Based on the received data the eNodeB (401) may determine a received power difference between the received data. The eNodeB (401) may further determine a beamforming direction for subsequent data transmissions. Based on the power difference, the eNodeB (401) may account for the received power difference in the subsequent data transmissions, thus improving data communications towards the user equipment.
摘要翻译：这里呈现的一些示例性实施例针对eNodeB（401）及其中的相应方法，用于在多天线系统中提供数据传输。 eNodeB（401）可以被配置为从用户设备接收多个信号质量评估和CSI报告。基于接收的数据，eNodeB（401）可以确定所接收的数据之间的接收功率差。 eNodeB（401）还可以确定用于后续数据传输的波束形成方向。基于功率差异，eNodeB（401）可以考虑后续数据传输中的接收功率差异，从而改善到用户设备的数据通信。

14. 发明申请

US20130329649A1 BEAMFORMED DOWNLINK COMMUNICATIONS FOR A MULTIPLE ANTENNA SYSTEM 有权
标题翻译：用于多个天线系统的BEAMFORMED DOWNLINK通信
公开(公告)号：US20130329649A1
公开(公告)日：2013-12-12
申请号：US13520251
申请日：2012-06-08
申请人： Niklas Wernersson , Svante Bergman , David Hammarwall
发明人： Niklas Wernersson , Svante Bergman , David Hammarwall
IPC分类号： H04W72/08
CPC分类号： H01Q3/00 , H04B7/0417 , H04B7/0469 , H04B7/0617 , H04B7/0626 , H04B7/0632
摘要： Some of the example embodiments presented herein are directed towards an eNodeB (401), and corresponding method therein, for establishing beamforming for downlink communications in a multiple antenna system. The eNodeB (401) may be configured to transmit a plurality of reference signals, where each reference signal is beamformed into a distinct direction with in at least one correlated domain (e.g., an elevation and/or azimuth domain). The eNodeB (401) may thereafter generate beamformed downlink communications for antenna elements and/or subelements based on received signal quality assessments of the plurality of reference signals.Some example embodiments may be directed towards a user equipment (505), and corresponding methods therein, for establishing beamforming for downlink communications. The user equipment (505) may be configured to receive the plurality of reference signals and provide signal assessments of the reference signals based on measurements performed by the user equipment (505). The user equipment (505) may thereafter transmit the signal quality assessments to the eNodeB (401) and receive beamformed downlink communications based on the signal quality assessments.
摘要翻译：这里呈现的一些示例性实施例针对eNodeB（401）及其中的相应方法，用于建立用于多天线系统中的下行链路通信的波束成形。 eNodeB（401）可以被配置为发送多个参考信号，其中每个参考信号在至少一个相关域（例如，高程和/或方位域）中被波束形成为不同的方向。 eNodeB（401）随后可以基于多个参考信号的接收信号质量评估来生成用于天线元件和/或子元件的波束形成的下行链路通信。一些示例性实施例可以针对用户设备（505）及其中的相应方法，用于建立用于下行链路通信的波束形成。用户设备（505）可以被配置为基于由用户设备（505）执行的测量来接收多个参考信号并提供参考信号的信号评估。然后，用户设备（505）可以将信号质量评估发送到eNodeB（401），并且基于信号质量评估来接收波束形成的下行链路通信。

15. 发明申请

US20130328722A1 NODE AND METHOD FOR ESTABLISHING BEAMFORMING FOR DOWNLINK COMMUNICATIONS 审中-公开
标题翻译：用于建立下行链路通信波束的节点和方法
公开(公告)号：US20130328722A1
公开(公告)日：2013-12-12
申请号：US13520256
申请日：2012-06-08
申请人： Niklas Wernersson , David Hammarwall , Svante Bergman
发明人： Niklas Wernersson , David Hammarwall , Svante Bergman
IPC分类号： H01Q3/00
CPC分类号： H01Q3/00 , H04B7/0417 , H04B7/0469 , H04B7/0617 , H04B7/0626 , H04B7/0632
摘要： Example embodiments presented herein are directed towards an eNodeB (401), and method therein, for establishing beamforming for downlink communications in a multiple antenna system. The eNodeB may be configured to receive, from a user equipment, a plurality of signal quality assessments which correspond to a distinct direction within at least one correlated domain (e.g., an elevation and/or azimuth domain). Based on the signal quality assessments, at least one first and second signal quality assessment may be identified according to a predetermined signal characteristic. Thereafter, a transmission direction may be determined based on the at least one first and second signal quality assessment and associated directions within the at least one correlated domain. Based on the determined transmission direction, downlink communications may be transmitted to the user equipment.
摘要翻译：这里呈现的示例性实施例针对eNodeB（401）及其中的方法，用于建立用于多天线系统中的下行链路通信的波束成形。 eNodeB可以被配置为从用户设备接收对应于至少一个相关域（例如，高程和/或方位角域）内的不同方向的多个信号质量评估。基于信号质量评估，可以根据预定的信号特性来识别至少一个第一和第二信号质量评估。此后，可以基于至少一个相关域内的至少一个第一和第二信号质量评估和相关联的方向来确定传输方向。基于确定的传输方向，可以向用户设备发送下行链路通信。

16. 发明授权

US08605809B2 Method and apparatus for using factorized precoding 有权
标题翻译：使用分解预编码的方法和装置
公开(公告)号：US08605809B2
公开(公告)日：2013-12-10
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： H04B7/02
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。

17. 发明申请

US20130303090A1 Methods and Arrangements for CSI Reporting 有权
标题翻译： CSI报告的方法和安排
公开(公告)号：US20130303090A1
公开(公告)日：2013-11-14
申请号：US13469809
申请日：2012-05-11
申请人： David HAMMARWALL , Svante BERGMAN
发明人： David HAMMARWALL , Svante BERGMAN
IPC分类号： H04W24/00
CPC分类号： H04B7/0456 , H04B7/063 , H04B7/0639 , H04J11/0053 , H04L1/0026 , H04L1/06 , H04L1/1671 , H04L5/0057
摘要： Some embodiments provide a method in a wireless device for reporting channel state information, CSI, for a CSI process. The CSI process corresponds to a reference signal resource and an associated interference measurement resource, IMR. According to the method, the wireless device obtains an interference power adjustment value. The wireless device estimates interference and noise based on the IMR, and on the interference power adjustment value. Furthermore, the wireless device determines channel state information based on an estimated effective channel measured based on the reference signal resource, and on the estimated interference and noise. Finally, the wireless device transmits the channel state information to a network node.
摘要翻译：一些实施例提供了一种无线设备中用于为CSI过程报告信道状态信息CSI的方法。 CSI过程对应于参考信号资源和相关联的干扰测量资源IMR。根据该方法，无线装置获得干扰功率调整值。无线设备基于IMR估计干扰和噪声以及干扰功率调整值。此外，无线设备基于基于参考信号资源测量的估计有效信道以及估计的干扰和噪声来确定信道状态信息。最后，无线设备向网络节点发送信道状态信息。

18. 发明授权

US08582627B2 Precode structure for MIMO precoding 有权
标题翻译： MIMO预编码的预编码结构
公开(公告)号：US08582627B2
公开(公告)日：2013-11-12
申请号：US13080737
申请日：2011-04-06
申请人： David Hammarwall , George Jöngren
发明人： David Hammarwall , George Jöngren
IPC分类号： H04B1/38
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： The teachings herein present a method and apparatus that implement and use a factorized precoder structure that is advantageous in terms of performance and efficiency. In particular, the teachings presented herein disclose an underlying precoder structure that allows for certain codebook reuse across different transmission scenarios, including for transmission from a single Uniform Linear Array (ULA) of transmit antennas and transmission from cross-polarized subgroups of such antennas. According to this structure, an overall precoder is constructed from a conversion precoder and a tuning precoder. The conversion precoder includes antenna-subgroup precoders of size NT/2, where NT represents the number of overall antenna ports considered. Correspondingly, the tuning precoder controls the offset of beam phases between the antenna-subgroup precoders, allowing the conversion precoder to be used with cross-polarized arrays of NT/2 antenna elements and with co-polarized arrays of NT antenna elements.
摘要翻译：本文的教导提出了实现和使用在性能和效率方面有利的因式分解预编码器结构的方法和装置。特别地，本文所呈现的教导公开了一种潜在的预编码器结构，其允许在不同传输场景下的某些码本重用，包括用于从发射天线的单个均匀线性阵列（ULA）和从这些天线的交叉极化子组发射的传输。根据该结构，由转换预编码器和调谐预编码器构成整体预编码器。转换预编码器包括大小为NT / 2的天线 - 子组预编码器，其中NT表示所考虑的总体天线端口的数量。相应地，调谐预编码器控制天线 - 子组预编码器之间的波束相位的偏移，允许转换预编码器与NT / 2天线元件的交叉极化阵列和NT天线元件的共极化阵列一起使用。

19. 发明申请

US20130242949A1 Antenna Port Mapping for Demodulation Reference Signals 有权
标题翻译：天线端口映射解调参考信号
公开(公告)号：US20130242949A1
公开(公告)日：2013-09-19
申请号：US13874768
申请日：2013-05-01
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： H04W72/06
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。

20. 发明授权

US08358979B2 Method and apparatus for measuring interference in a telecommunications system 有权
标题翻译：用于测量电信系统中的干扰的方法和装置
公开(公告)号：US08358979B2
公开(公告)日：2013-01-22
申请号：US12365703
申请日：2009-02-04
申请人： David Astely , David Hammarwall , George Jöngren , Per Magnus Lundevall
发明人： David Astely , David Hammarwall , George Jöngren , Per Magnus Lundevall
IPC分类号： H04B1/00
CPC分类号： H04W24/10 , H04B17/345 , H04L5/003 , H04L5/0048 , H04L5/0062 , H04L5/0073 , H04W24/08
摘要： A method for facilitating noise and interference measurements on an air interface of a wireless network includes obtaining information relating to a time-varying layout of a silent resource element (RE) grid and taking a presence of a silent RE grid into account in the reception of a control or a data channel.
摘要翻译：用于促进无线网络的空中接口上的噪声和干扰测量的方法包括获得与无声资源元素（RE）网格的时变布局有关的信息，并且在接收到无线资源元素控制或数据通道。

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