公开(公告)号：US20110310832A1

公开(公告)日：2011-12-22

申请号：US13165041

申请日：2011-06-21

申请人： David Hammarwall ,  George Jöngren

发明人： David Hammarwall ,  George Jöngren

IPC分类号： H04W72/04

CPC分类号： H04W72/042 ,  H04L1/003 ,  H04L1/0079 ,  H04L1/1664 ,  H04L1/1671 ,  H04W72/0466

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, for each of M control signals to be transmitted during the subframe, a value (Q′), based at least in part, on the number of bits in the one or more user data codewords, and an estimated number of user data vector symbols onto which the one or more user data codewords will be mapped. The estimate of the number of user data vector symbols for a particular one of the M control signals depends, at least in part, on a number of control vector symbols to be allocated to one or more others of the M control signals. The method also includes determining a number of control vector symbols onto which to map each of the M control signals based on a respective value Q′ calculated for that control signal, mapping the control signals for that control signal, and transmitting the control vector symbols.

摘要翻译： 一种使用多个发送层无线发送数据和控制信息的方法包括：确定在子帧期间发送的一个或多个用户数据码字中的比特数，并且针对在子帧期间发送的M个控制信号， 至少部分地基于一个或多个用户数据码字中的比特数的值（Q'）和一个或多个用户数据码字将被映射到的用户数据向量符号的估计数目。 用于M个控制信号中的特定一个的用户数据向量符号的数量的估计至少部分地取决于要分配给M个控制信号中的一个或多个其他控制信号的多个控制向量符号。 该方法还包括基于针对该控制信号计算的相应值Q'来确定控制向量符号的数量以映射每个M个控制信号，映射该控制信号的控制信号，以及发送控制向量符号。

公开(公告)号：US20110274123A1

公开(公告)日：2011-11-10

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： H04L27/00 ,  H04B1/38 ,  H04J13/00

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：US20110268061A1

公开(公告)日：2011-11-03

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： H04W72/04

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：US20110249713A1

公开(公告)日：2011-10-13

申请号：US13080740

申请日：2011-04-06

申请人： David Hammarwall ,  George Jöngren

发明人： David Hammarwall ,  George Jöngren

IPC分类号： H04L5/14

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 herein relates to signaling codebook restrictions, to restrict the precoder recommendations being fed back from a remote transceiver, so that precoder selections made by the remote receiver are restricted to permitted subsets of overall precoders within a defined set of overall precoders, or to permitted subsets within larger sets of conversion precoders and tuning precoders, for the case where the overall precoders are represented in factorized form by conversion and tuning precoders. As a non-limiting example, these teachings advantageously provide for precoder restrictions in LTE or LTE-Advanced networks, where ongoing development targets the use of larger, richer sets of precoders, and where the disclosed mechanisms for determining, signaling, and responding to subset restrictions provide significant operational advantages.

摘要翻译： 本文的教导的一个方面涉及信令码本限制，以限制从远程收发器反馈的预编码器建议，使得由远程接收机进行的预编码器选择被限制在所定义的整个预编码器集合内的整体预编码器的允许子集， 或者在通过转换和调谐预编码器以分解形式表示整体预编码器的情况下，在更大的转换预编码器和调谐预编码器集合内允许的子集。 作为非限制性示例，这些教导有利地提供LTE或LTE-Advanced网络中的预编码器限制，其中正在进行的开发旨在使用更大，更丰富的预编码器集合，并且其中所公开的用于确定，发信号和响应子集的机制 限制提供了显着的操作优势。

公开(公告)号：US20110243272A1

公开(公告)日：2011-10-06

申请号：US12960964

申请日：2010-12-06

申请人： David Hammarwall ,  George Jöngren

发明人： David Hammarwall ,  George Jöngren

IPC分类号： H04L25/03

CPC分类号： H04B7/0626 ,  H04B7/0417 ,  H04B7/065

摘要： A precoder for an effective channel linking a wireless receiver to a wireless transmitter includes a precoder report and a precoder update report, the effective channel including a propagation channel, transmit filters and receive filters. A structured frequency-selectivity of the effective channel is determined, the structured frequency-selectivity being induced by one or more long term and/or persistent parameters of the effective channel. The precoder update report is generated based on the structured frequency-selectivity. The precoder update report includes frequency-dependent phase compensation which accounts for the structured frequency-selectivity. The precoder report is generated for the effective channel based on channel state information determined for the effective channel. The precoder report and the precoder update report are transmitted to the wireless transmitter. The transmitter determines a transmission operation based on the precoder report and the precoder update report, and transmits data to the wireless receiver in accordance with the transmission operation.

摘要翻译： 将无线接收机与无线发射机连接的有效信道的预编码器包括预编码器报告和预编码器更新报告，有效信道包括传播信道，发射滤波器和接收滤波器。 确定有效信道的结构化频率选择性，结构化频率选择性由有效信道的一个或多个长期和/或持久参数引起。 基于结构化频率选择性生成预编码器更新报告。 预编码器更新报告包括考虑结构化频率选择性的频率相位相位补偿。 基于为有效信道确定的信道状态信息，为有效信道生成预编码器报告。 预编码器报告和预编码器更新报告被发送到无线发射机。 发射机根据预编码器报告和预编码器更新报告确定传输操作，并根据传输操作向无线接收机发送数据。

公开(公告)号：US09236916B2

公开(公告)日：2016-01-12

申请号：US13636780

申请日：2012-09-13

申请人： Niklas Wernersson ,  David Hammarwall ,  Svante Bergman

发明人： Niklas Wernersson ,  David Hammarwall ,  Svante Bergman

IPC分类号： H04W72/06 ,  H04W72/08 ,  H04B7/02 ,  H04B7/06 ,  H04L5/00 ,  H04B7/10 ,  H04B17/24

CPC分类号： H04B7/024 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/0626 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0639 ,  H04B7/10 ,  H04B17/24 ,  H04L5/0023 ,  H04W72/06

摘要： Example embodiments presented herein are directed towards an eNodeB, and method therein, for generating downlink communications in a multiple antenna system. The method comprises transmitting, to a number of user equipments, a plurality of reference signals, where each signal is beamformed in a distinct direction within at least one correlated domain (e.g., elevation and/or azimuth). The eNodeB receives at least one CSI report from a specific user equipment and determines a primary reference signal based on, for example, the at least one CSI report. The eNodeB may thereafter generate downlink communication signals for antenna element(s) and/or subelements of the multiple antenna system. The downlink communication signals are beamformed into a transmitting direction that aligns most closely with a beamforming direction of the at least one primary reference signal, as compared to any other beamforming direction of the reference signals.

摘要翻译： 本文呈现的示例性实施例针对其中的eNodeB及其方法，用于在多天线系统中生成下行链路通信。 该方法包括向多个用户设备发送多个参考信号，其中每个信号在至少一个相关域（例如，仰角和/或方位角）内的不同方向上被波束形成。 eNodeB从特定用户设备接收至少一个CSI报告，并且基于例如至少一个CSI报告确定主参考信号。 eNodeB然后可以为多天线系统的天线元件和/或子元件生成下行链路通信信号。 与参考信号的任何其他波束形成方向相比，下行链路通信信号被波束形成发送方向，其最接近地与至少一个主参考信号的波束成形方向对齐。

公开(公告)号：US20140018118A1

公开(公告)日：2014-01-16

申请号：US13993375

申请日：2012-07-12

申请人： David Hammarwall

发明人： David Hammarwall

IPC分类号： H04W24/02 ,  H04L5/00

CPC分类号： H04W24/02 ,  H04B7/024 ,  H04B17/345 ,  H04J11/005 ,  H04L5/0057

摘要： It is presented a user equipment comprising: a processor; and an instruction memory. The instruction memory stores instructions that, when executed, causes the user equipment to: receive at least one command from a network node; obtain at least a first measurement of channel state information and a second measurement of channel state information as a response to the at least one command; determine whether an interference corresponding to the second measurement of channel state information occurs during a data reception phase; and decode received signals, when an interference corresponding to the second measurement of channel state information occurs, based on the second measurement of channel state information.

摘要翻译： 提供了一种用户设备，包括：处理器; 和指令存储器。 所述指令存储器存储指令，所述指令在执行时使得所述用户设备：从网络节点接收至少一个命令; 获取信道状态信息的至少第一测量和作为对所述至少一个命令的响应的信道状态信息的第二测量; 确定在数据接收阶段是否发生与信道状态信息的第二测量相对应的干扰; 并且当基于信道状态信息的第二测量发生与信道状态信息的第二测量相对应的干扰时，对接收信号进行解码。

公开(公告)号：US20130310059A1

公开(公告)日：2013-11-21

申请号：US13640337

申请日：2012-07-30

申请人： Stefan Parkvall ,  David Astely ,  Erik Dahlman ,  David Hammarwall ,  Bengt Lindoff ,  Stefano Sorrentino ,  Leif Wilhelmsson

发明人： Stefan Parkvall ,  David Astely ,  Erik Dahlman ,  David Hammarwall ,  Bengt Lindoff ,  Stefano Sorrentino ,  Leif Wilhelmsson

IPC分类号： H04W72/04

CPC分类号： H04W72/1231 ,  H04W52/143 ,  H04W52/244 ,  H04W72/0446 ,  Y02D70/00

摘要： In a heterogeneous cell deployment a mobile terminal may need to receive control data transmissions from a macro node at the same time as a pico node is transmitting user data for the mobile terminal, using the same frequency or set of frequencies. This can result in a problematic interference situation. According to several embodiments of the present invention, at least one of two general approaches is used to mitigate the interference situation described above. In a first approach, the pico node's transmission power is reduced in some time intervals, thereby reducing the interference to a level where reception from the macro node is possible. In a second approach, which may be combined with the first approach in some cases, the data transmitted from the macro node is provided by the pico node, either alone or in combination with the macro node.

摘要翻译： 在异构小区部署中，移动终端可能需要在微微节点正在使用相同的频率或频率集合来传送移动终端的用户数据的同时从宏节点接收控制数据传输。 这可能导致有问题的干扰情况。 根据本发明的几个实施例，使用两种一般方法中的至少一种来减轻上述干扰情况。 在第一种方法中，微微节点的传输功率在一些时间间隔内减小，从而将干扰降低到可能从宏节点接收的水平。 在一些可能与第一种方法组合的第二种方法中，从宏节点发送的数据由微微节点提供，单独或与宏节点组合。

公开(公告)号：US20130242773A1

公开(公告)日：2013-09-19

申请号：US13636780

申请日：2012-09-13

申请人： Niklas Wernersson ,  David Hammarwall ,  Svante Bergman

发明人： Niklas Wernersson ,  David Hammarwall ,  Svante Bergman

IPC分类号： H04W72/08 ,  H04W24/00 ,  H04W72/04

CPC分类号： H04B7/024 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/0626 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0639 ,  H04B7/10 ,  H04B17/24 ,  H04L5/0023 ,  H04W72/06

摘要： Example embodiments presented herein are directed towards an eNodeB, and method therein, for generating downlink communications in a multiple antenna system. The method comprises transmitting, to a number of user equipments, a plurality of reference signals, where each signal is beamformed in a distinct direction within at least one correlated domain (e.g., elevation and/or azimuth). The eNodeB receives at least one CSI report from a specific user equipment and determines a primary reference signal based on, for example, the at least one CSI report. The eNodeB may thereafter generate downlink communication signals for antenna element(s) and/or subelements of the multiple antenna system. The downlink communication signals are beamformed into a transmitting direction that aligns most closely with a beamforming direction of the at least one primary reference signal, as compared to any other beamforming direction of the reference signals.

摘要翻译： 本文呈现的示例性实施例针对其中的eNodeB及其方法，用于在多天线系统中生成下行链路通信。 该方法包括向多个用户设备发送多个参考信号，其中每个信号在至少一个相关域（例如，仰角和/或方位角）内的不同方向上被波束形成。 eNodeB从特定用户设备接收至少一个CSI报告，并且基于例如至少一个CSI报告确定主参考信号。 eNodeB然后可以为多天线系统的天线元件和/或子元件生成下行链路通信信号。 与参考信号的任何其他波束形成方向相比，下行链路通信信号被波束形成发送方向，其最接近地与至少一个主参考信号的波束成形方向对齐。

公开(公告)号：US20130242769A1

公开(公告)日：2013-09-19

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： H04W24/10

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。