公开(公告)号：US20150181570A1

公开(公告)日：2015-06-25

申请号：US14413870

申请日：2012-07-17

申请人： Stefano Sorrentino ,  David Hammarwall ,  George Jöngren

发明人： Stefano Sorrentino ,  David Hammarwall ,  George Jöngren

IPC分类号： H04W72/04 ,  H04W76/04

CPC分类号： H04W72/042 ,  H04L5/0057 ,  H04W72/048 ,  H04W72/1205 ,  H04W76/27

摘要： A network node, a UE and respective methods therein are provided for enabling transmission of data using a resource element reserved for CRS. The method in the network node for scheduling a downlink data transmission to the UE currently connected to the network node, comprises determining to schedule data transmission to the UE using at least one resource element reserved for transmitting CRSs during at least one subframe; and transmitting data to the UE using the at least one resource element reserved for transmitting the at least one CRS during the at least one subframe.

摘要翻译： 提供网络节点，UE及其各自的方法，以使能使用为CRS保留的资源元素来传输数据。 所述网络节点中用于调度到当前连接到所述网络节点的所述UE的下行链路数据传输的方法包括：使用在至少一个子帧期间保留用于发送CRS的至少一个资源元素来规划到所述UE的数据传输; 以及在所述至少一个子帧期间使用保留用于发送所述至少一个CRS的所述至少一个资源元素向所述UE发送数据。

公开(公告)号：US09059758B2

公开(公告)日：2015-06-16

申请号：US13876072

申请日：2011-09-26

申请人： David Hammarwall ,  Svante Bergman ,  George Jöngren

发明人： David Hammarwall ,  Svante Bergman ,  George Jöngren

IPC分类号： H04B7/04 ,  H04B7/06

CPC分类号： H04B7/0486 ,  H04B7/0619 ,  H04B7/063

摘要： The invention relates to methods and arrangements for rank adaptation for transmissions over a multipie-input-muttipie-output, M1MO, channel in a wireless communications system. A receiving node (270) performs (310) measurements on reference signals received from a sending node (200), The receiving node performs (330a(330b) a first feedback computation for a first rank and at least one second feedback computation for at yeast one second rank based on the measurements. The first feedback computation includes applying a first relation between assumed transmitted energy for data and transmitted energy for the reference signals that is specific to the first rank. A second relation between assumed transmitted energy for data and transmitted energy for the reference signals is specific to the at least one second rank. The receiving node selects (340) one rank based on the feedback computations and indicates (350) the selected rank in a feedback report to the sending node.

摘要翻译： 本发明涉及用于通过无线通信系统中的多码输入多输出，M1MO，信道的传输的秩适应的方法和装置。 接收节点（270）对从发送节点（200）接收的参考信号执行（310）测量。接收节点对酵母进行第一等级的第一反馈计算和至少一个第二反馈计算 第一反馈计算包括应用假设的数据发射能量与针对第一等级特定的参考信号的发射能量之间的第一关系，数据和发射能量的假设发射能量之间的第二个关系 所述参考信号特定于所述至少一个第二等级，所述接收节点基于所述反馈计算选择（340）一个等级，并且向所述发送节点指示（350）所述反馈报告中的所选等级。

公开(公告)号：US08767681B2

公开(公告)日：2014-07-01

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： H04W4/00 ,  H04B7/005 ,  H04B1/44 ,  H04J3/16

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：US08634367B2

公开(公告)日：2014-01-21

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： H04W4/00

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：确定在子帧期间要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：US08634365B2

公开(公告)日：2014-01-21

申请号：US13095313

申请日：2011-04-27

申请人： David Hammarwall ,  George Jöngren

发明人： David Hammarwall ,  George Jöngren

IPC分类号： H04W4/00 ,  H04J11/00 ,  H04J13/00

CPC分类号： H04W72/0446 ,  H04L1/003 ,  H04L1/0079 ,  H04L1/1664 ,  H04L1/1671 ,  H04L5/0016 ,  H04L5/0044 ,  H04L5/0053 ,  H04L5/0092 ,  H04W72/0466

摘要： A method for wirelessly transmitting data using a plurality of transmission layers includes estimating a number of vector symbols to be allocated to transmission of user data codewords during a subframe and determining a number of bits in a plurality of user data codewords to be transmitted during the subframe. The method also includes calculating a number of control vector symbols to allocate to control information based at least in part on the estimated number of vector symbols and the determined number of bits. Additionally, the method includes mapping control codewords to the calculated number of control vector symbols and transmitting vector symbols carrying the user data codewords and the 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的方法包括估计在子帧期间分配给用户数据码字的传输的向量符号的数量，并且确定在子帧期间要发送的多个用户数据码字中的比特数 。 该方法还包括至少部分地基于所估计的向量符号数和所确定的比特数来计算多个控制向量符号以分配给控制信息。 此外，该方法包括在子帧期间将控制码字映射到所计算的控制向量符号的数量，以及在多个传输层上传送携带用户数据码字和控制码字的向量符号。

公开(公告)号：US08619904B2

公开(公告)日：2013-12-31

申请号：US13124817

申请日：2008-10-31

申请人： David Hammarwall ,  George Jöngren ,  Stefano Sorrention

发明人： David Hammarwall ,  George Jöngren ,  Stefano Sorrention

IPC分类号： H04K1/02

CPC分类号： H04B7/0417 ,  H04B7/0619

摘要： As a basis for precoder quantization, a channel matrix representing multi-antenna channel characteristics between a transmitter and a receiver in the mobile communications network is estimated (S1). A channel-assisted vector selection procedure (S2-S4) for iteratively selecting precoding vectors for a precoding matrix is performed. Each of a number of iterations of the novel iterative vector selection procedure generally involves evaluation (S2) of the performance of each one of a set of candidate vectors included in a given vector codebook with respect to a predetermined performance measure that is dependent on the estimated channel matrix, and selection (S3) of one of the set of candidate vectors as a respective precoding vector for the precoding matrix based on the evaluated performance. Information representative of a set of selected precoding vectors is then compiled (S5) to form a quantized representation of the precoding matrix for transmission to the transmitter side.

摘要翻译： 作为预编码器量化的基础，估计表示移动通信网络中的发射机与接收机之间的多天线信道特性的信道矩阵（S1）。 执行用于迭代地选择预编码矩阵的预编码向量的信道辅助向量选择过程（S2-S4）。 新颖迭代向量选择过程的多次迭代中的每一个通常涉及关于给定向量码本中包括的一组候选向量中的每一个的执行的评估（S2），该预定性能度量取决于估计的 信道矩阵和候选向量集合中的一个的选择（S3）作为用于基于所评估的性能的预编码矩阵的相应预编码向量。 然后，编译一组选定的预编码矢量的信息（S5），以形成用于发射到发射机侧的预编码矩阵的量化表示。

公开(公告)号：US20130272351A1

公开(公告)日：2013-10-17

申请号：US13903442

申请日：2013-05-28

申请人： David Hammarwall ,  George Jöngren

发明人： David Hammarwall ,  George Jöngren

IPC分类号： H04B7/04

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 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：US08526383B2

公开(公告)日：2013-09-03

申请号：US13099101

申请日：2011-05-02

申请人： David Hammarwall ,  George Jöngren ,  Bo Göransson

发明人： David Hammarwall ,  George Jöngren ,  Bo Göransson

IPC分类号： H04W4/00

CPC分类号： H04W72/0413 ,  H04L1/003 ,  H04L1/0079 ,  H04L1/0618 ,  H04L1/1664 ,  H04L1/1671 ,  H04L5/0016 ,  H04L5/0026 ,  H04L5/0044 ,  H04L5/0046 ,  H04L5/0053 ,  H04L25/03929 ,  H04W72/02 ,  H04W72/0446

摘要： A method for wirelessly transmitting data using a plurality of transmission layers includes estimating a number of data vector symbols to be allocated to one or more user data codewords during the subframe and determining a number of bits in the one or more user data codewords. The method also includes calculating a nominal number of control vector symbols to allocate to control information based, at least in part, on the estimated number of data vector symbols and the determined number of bits in the one or more user data codewords. Additionally, the method includes determining an offset value based, at least in part, on a number of layers over which the wireless terminal will be transmitting during the subframe and calculating a final number of control vector symbols by multiplying the nominal number of control vector symbols and the offset value. The method also includes mapping one or more control codewords to the final 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.

公开(公告)号：US20130195161A1

公开(公告)日：2013-08-01

申请号：US13876072

申请日：2011-09-26

申请人： David Hammarwall ,  Svante Bergman ,  George Jöngren

发明人： David Hammarwall ,  Svante Bergman ,  George Jöngren

IPC分类号： H04B7/04

CPC分类号： H04B7/0486 ,  H04B7/0619 ,  H04B7/063

摘要： The invention relates to methods and arrangements for rank adaptation for transmissions over a multipie-input-muttipie-output, M1MO, channel in a wireless communications system. A receiving node (270) performs (310) measurements on reference signals received from a sending node (200), The receiving node performs (330a(330b) a first feedback computation for a first rank and at least one second feedback computation for at yeast one second rank based on the measurements. The first feedback computation includes applying a first relation between assumed transmitted energy for data and transmitted energy for the reference signals that is specific to the first rank. A second relation between assumed transmitted energy for data and transmitted energy for the reference signals is specific to the at least one second rank. The receiving node selects (340) one rank based on the feedback computations and indicates (350) the selected rank in a feedback report to the sending node.

摘要翻译： 本发明涉及用于通过无线通信系统中的多码输入多输出，M1MO，信道的传输的秩适应的方法和装置。 接收节点（270）对从发送节点（200）接收的参考信号执行（310）测量。接收节点对酵母进行第一等级的第一反馈计算和至少一个第二反馈计算 第一反馈计算包括应用假设的数据发射能量与针对第一等级特定的参考信号的发射能量之间的第一关系，数据和发射能量的假设发射能量之间的第二个关系 所述参考信号特定于所述至少一个第二等级，所述接收节点基于所述反馈计算选择（340）一个等级，并且向所述发送节点指示（350）所述反馈报告中的所选等级。

公开(公告)号：US08494033B2

公开(公告)日：2013-07-23

申请号：US12973096

申请日：2010-12-20

申请人： George Jöngren ,  Svante Bergman ,  David Hammarwall

发明人： George Jöngren ,  Svante Bergman ,  David Hammarwall

IPC分类号： H04L25/49

CPC分类号： H04B7/0617 ,  H04B7/0639 ,  H04B7/065 ,  H04B7/0663

摘要： Data may be transmitted from a first communications device using multiple antennas to a second communications device based on precoder feedback defining a grid of transmission beams. A first precoder index may be received from the second communications device, and a second precoder index may be received from the second communications device. At least one symbol stream may be processed based at least in part on the first and second precoder indices to generate antenna signals for respective antenna elements of the multiple antennas, and the antenna signals may be transmitted over the multiple antennas to the communications device. Related base stations and user equipment are also discussed.

摘要翻译： 可以基于定义传输波束网格的预编码器反馈从多个天线的第一通信设备向第二通信设备发送数据。 可以从第二通信设备接收第一预编码器索引，并且可以从第二通信设备接收第二预编码器索引。 可以至少部分地基于第一和第二预编码器索引来处理至少一个符号流，以生成多个天线中的各个天线元件的天线信号，并且天线信号可以通过多个天线发送到通信设备。 还讨论了相关基站和用户设备。