公开(公告)号：EP2839598A4

公开(公告)日：2016-01-27

申请号：EP13778844

申请日：2013-03-14

Applicant: ERICSSON TELEFON AB L M

Inventor： JONSSON ELIAS ,  UESAKA KAZUYOSHI

IPC: H04B1/7107 ,  H04B1/7115

CPC classification number: H04B1/7115 ,  H04B1/7107

Abstract: Techniques are disclosed for determining which channelization codes are used for an interfering HS-PDSCH transmission without knowing whether a neighboring UE targeted by that transmission has had its 64QAM capability activated by higher layer signaling. The average amplitude is measured for each of several possible groups of channelization codes for each of one or more nearby UEs that might be the targets of interfering HS-PDSCH messages. Testing whether the amplitude is approximately the same across the codes in a possible combination of channelization codes yields a metric value that indicates whether that particular combination of codes is likely to be transmitted to a given UE. A second metric that detects the most likely modulation for possible groups of channelization codes is also calculated. The metrics are combined to determine which combination of channelization codes and modulation scheme is most likely being used for addressing the neighboring UE.

公开(公告)号：EP2834920A4

公开(公告)日：2015-10-28

申请号：EP13772174

申请日：2013-03-14

Applicant: ERICSSON TELEFON AB L M

Inventor： JONSSON ELIAS

IPC: H03M13/45 ,  H03M13/39 ,  H04B1/7115 ,  H04L1/00

CPC classification number: H03M13/6337 ,  H03M13/2957 ,  H04L25/021 ,  H04L25/0212 ,  H04L25/0238 ,  H04L25/067

Abstract: Log-likelihood ratios produced by a decoder are incorporated into a soft symbol to soft bit estimation process and are used to perform improved channel estimation and impairment covariance estimation. In an example method, a plurality of soft bits and corresponding probability metrics for a series of received unknown symbols are generated. Estimates of the received unknown information symbols are then regenerated, as a function of the soft bits and corresponding probability metrics. An estimate of the average amplitude of the received unknown information symbols, or an estimate of the propagation channel response experienced by the received unknown information symbols, or both, are calculated, as a function of the regenerated symbol estimates. The results are applied to produce demodulated symbols for a second decoding iteration for the series of received unknown symbols.

公开(公告)号：EP2751931A4

公开(公告)日：2015-05-27

申请号：EP12847972

申请日：2012-10-04

Applicant: ERICSSON TELEFON AB L M

Inventor： JONSSON ELIAS ,  REIAL ANDRES

IPC: H04B1/7107 ,  H04L1/00

CPC classification number: H04L1/0038 ,  H04L1/0048 ,  H04L1/0061 ,  H04W8/26

公开(公告)号：EP2583530A4

公开(公告)日：2015-03-11

申请号：EP10853050

申请日：2010-07-14

Applicant: ERICSSON TELEFON AB L M

Inventor： HU YANG ,  JONSSON ELIAS

IPC: H04L25/02 ,  H04J13/00 ,  H04L5/00 ,  H04L27/26

CPC classification number: H04W24/02 ,  H04J13/0003 ,  H04J13/004 ,  H04J13/0048 ,  H04J13/18 ,  H04L5/0016 ,  H04L5/0051 ,  H04L25/022 ,  H04L25/0224 ,  H04L25/0232 ,  H04L27/2613 ,  H04L27/262 ,  H04W48/08 ,  H04W72/042

公开(公告)号：EP2140647A4

公开(公告)日：2014-05-21

申请号：EP08705304

申请日：2008-01-11

Applicant: ERICSSON TELEFON AB L M

Inventor： JADING YLVA ,  JONSSON ELIAS ,  PARKVALL STEFAN ,  DAHLMAN ERIK

IPC: H04L27/26 ,  H04J11/00 ,  H04L5/00 ,  H04W36/00 ,  H04W72/00

CPC classification number: H04W72/005 ,  H04J11/0093 ,  H04L5/0007 ,  H04L5/005 ,  H04W36/0055

公开(公告)号：WO2008104466A3

公开(公告)日：2008-11-27

申请号：PCT/EP2008051887

申请日：2008-02-15

Applicant: ERICSSON TELEFON AB L M ,  JONSSON ELIAS ,  REIAL ANDRES

Inventor： JONSSON ELIAS ,  REIAL ANDRES

IPC: H04B1/707 ,  H04B7/08

CPC classification number: H04W72/12 ,  H04B1/7103 ,  H04B1/712 ,  H04B7/0615 ,  H04B7/0669 ,  H04B7/0697 ,  H04B2201/70701 ,  H04B2201/709727 ,  Y02D70/00 ,  Y02D70/40 ,  Y02D70/444

Abstract: The teachings herein disclose methods and apparatus that simplify impairment correlation estimation for received signal processing, based on determining, for any given processing interval, which impairment contributors should be considered in the estimation of overall received signal impairment correlations. These simplifications reduce computational processing requirements, allowing reduced circuit complexity and/or reduced operating power, and improve receiver performance. A corresponding transmitter and transmission method include transmitting multiple information streams to targeted receivers according to ongoing scheduling, and controlling the ongoing scheduling to reduce the number of impairment contributors considered in impairment correlation estimation at the targeted receivers. In one embodiment, a receiver identifies which impairment contributors to consider based on receiving control information. In another embodiment, the receiver identifies the impairment contributors to consider based on background processing, e.g., background determination of parametric model fitting parameters for a plurality of impairment contributors, and observing those model fitting parameters over time.

Abstract translation: 本文的教导公开了基于对于任何给定的处理间隔确定在整体接收信号损害相关性的估计中应该考虑哪些减值贡献者来简化接收信号处理的损害相关性估计的方法和设备。 这些简化降低了计算处理要求，从而降低了电路复杂性和/或降低了工作功率，并提高了接收器的性能。 相应的发射机和传输方法包括根据正在进行的调度将多个信息流传输到目标接收机，并且控制正在进行的调度以减少目标接收机处的减损相关性估计中考虑的减值贡献者的数量。 在一个实施例中，接收者基于接收控制信息来识别要考虑哪些减值贡献者。 在另一个实施例中，接收机基于背景处理识别要考虑的减值贡献者，例如，多个减值贡献者的参数模型拟合参数的背景确定，以及随时间观察那些模型拟合参数。

公开(公告)号：WO2008145337A2

公开(公告)日：2008-12-04

申请号：PCT/EP2008004196

申请日：2008-05-27

Applicant: ERICSSON TELEFON AB L M ,  JONSSON ELIAS

Inventor： JONSSON ELIAS

IPC: H04L5/02 ,  H04L27/26

CPC classification number: H04L27/2647 ,  H04L5/023 ,  H04L25/0206 ,  H04L25/0228 ,  H04L27/261

Abstract: In an OFDM communications system receiver, channel estimates are processed to remove or reduce noise, exploiting the orthogonality of pilot patterns. The de-noised channel estimates are then used to compute inter-cell interference. The noise effects of orthogonal pilot patterns are selectively removed from channel samples in estimating inter-cell interference, depending on whether data subcarriers are subject to the same interference as pilot subcarriers, and whether data subcarriers are subject to interference from sectors with pilot patterns orthogonal to those in the transmitting sector. A further calculation removes noise from cells not identified by an orthogonal pilot sequence, which may be particularly applicable when large variations exist in the frequency domain of the propagation channel across a pilot pattern.

Abstract translation: 在OFDM通信系统接收机中，处理信道估计以消除或减少噪声，利用导频模式的正交性。 然后使用去噪信道估计来计算小区间干扰。 取决于数据副载波是否受到与导频子载波相同的干扰，以及数据副载波是否受到来自与导频模式正交的导频模式的扇区的干扰，从而在估计小区间干扰中从信道样本中选择性地去除正交导频模式的噪声影响 那些在传输部门。 进一步的计算消除了未被正交导频序列识别的小区的噪声，当通过导频模式的传播信道的频域存在大的变化时，这可能特别适用。

公开(公告)号：WO2004034595A3

公开(公告)日：2004-06-24

申请号：PCT/EP0310428

申请日：2003-09-19

Applicant: ERICSSON TELEFON AB L M ,  JONSSON ELIAS

Inventor： JONSSON ELIAS

IPC: H04B1/707

CPC classification number: H04B1/7113 ,  H04B1/7117

Abstract: Delays for a RAKE receiver are selected by searching a plurality of multipaths to select a set of multi-path delays associated with the highest signal to interference ratios (SIRs) and/or power values. The respective SIR values and/or power values for the multi-path delays are averaged over a time interval and the averaged SIR values and/or power values are multiplied by a scaling factor so as to reduce the averaged SIR values and/or power values. Those multi-path delays from the set of multi­path delays and a previous set of multi-path delays that have SIR values and/or power values greater than a threshold value are selected to generate a monitored set of multi-path delays. The SIR values and/or power values associated with the monitored set of multi-path delays are filtered and at least one multi-path delay from the monitored set of multi-path delays is eliminated as being correlated with another multi-path delay of the monitored set of multi-path delays to generate an output set of multi-path delays. The output set of multi-path delays are provided to a RAKE receiver.

Abstract translation: 通过搜索多个多径来选择与最高信号与干扰比（SIR）和/或功率值相关联的一组多径延迟来选择RAKE接收机的延迟。 多路径延迟的相应SIR值和/或功率值在时间间隔上被平均，并且将平均的SIR值和/或功率值乘以缩放因子，以便减小平均的SIR值和/或功率值 。 从多路径延迟集合和具有大于阈值的SIR值和/或功率值的多路径延迟的先前集合的那些多路径延迟被选择以产生被监测的多径延迟集合。 与所监视的多路径延迟集合相关联的SIR值和/或功率值被滤波，并且从所监视的多路径延迟集合中至少一个多径延迟被消除为与另一多径延迟相关联 监视多路延迟的集合以生成多路延迟的输出集合。 将多路径延迟的输出集提供给RAKE接收机。

公开(公告)号：WO2010109296A3

公开(公告)日：2010-12-16

申请号：PCT/IB2010000643

申请日：2010-03-22

Applicant: ERICSSON TELEFON AB L M ,  CAIRNS DOUGLAS A ,  UESAKA KAZUYOSHI ,  JONSSON ELIAS

Inventor： CAIRNS DOUGLAS A ,  UESAKA KAZUYOSHI ,  JONSSON ELIAS

IPC: H04B1/707 ,  H04L25/03

CPC classification number: H04B1/7115 ,  H04B1/7117 ,  H04B2201/709727 ,  H04L25/0216

Abstract: The placement of processing delays may be adjusted to facilitate signal reception. In an example embodiment, a composite signal having multiple signal images corresponding to multiple reception delays is received. A root-mean-square (RMS) delay spread is ascertained for the multiple reception delays that correspond to the multiple signal images of the composite signal. A set of temporal points is produced responsive to the RMS delay spread. Multiple processing delays are placed based on the set of temporal points. In different example implementations, the set of temporal points (e.g., of a grid) may be produced by adjusting a spacing between temporal points, by adjusting a total number of temporal points in the set, or by changing a center location of the set. The spacing and number of points may be adjusted responsive to the RMS delay spread. The center location may be adjusted responsive to at least one calculated delay.

Abstract translation: 处理延迟的放置可以被调整以便于信号接收。 在示例实施例中，接收具有对应于多个接收延迟的多个信号图像的复合信号。 确定对应于复合信号的多个信号图像的多个接收延迟的均方根（RMS）延迟扩展。 响应RMS延迟扩展产生一组时间点。 基于该组时间点放置多个处理延迟。 在不同的示例实现中，可以通过调整时间点之间的间隔，通过调整该组中的时间点的总数，或者通过改变该组的中心位置来产生该组时间点（例如，网格的时间点）。 点的间距和数量可以根据RMS延迟扩展进行调整。 中心位置可以响应于至少一个计算的延迟而被调整。

公开(公告)号：WO2008118064A2

公开(公告)日：2008-10-02

申请号：PCT/SE2008050032

申请日：2008-01-11

Applicant: ERICSSON TELEFON AB L M ,  JADING YLVA ,  JONSSON ELIAS ,  PARKVALL STEFAN ,  DAHLMAN ERIK

Inventor： JADING YLVA ,  JONSSON ELIAS ,  PARKVALL STEFAN ,  DAHLMAN ERIK

IPC: H04L27/26

CPC classification number: H04W72/005 ,  H04J11/0093 ,  H04L5/0007 ,  H04L5/005 ,  H04W36/0055

Abstract: A network unit of an own cell is operated in a radio communication system utilizing a radio interface that includes a radio frame made up of a number of sub-frames. The own cell serves one or more user equipments. Operation includes obtaining information about a scheduling of MBSFN data transmissions in one or more neighboring cells. The information thereby obtained is used to generate an information signal that, for a given sub-frame, enables the one or more user equipments to determine whether neighboring cell measurements can be performed using a unicast group of Orthogonal Frequency Division Multiple access (OFDM) symbols. The information signal is transmitted to the one or more user equipments, which can then use the information to determine how to locate cell-specific reference symbols when doing measurements of neighboring cells.

Abstract translation: 本小区的网络单元在利用无线接口的无线通信系统中运行，该无线接口包括由多个子帧组成的无线帧。 自己的小区服务于一个或多个用户设备。 操作包括获得关于一个或多个相邻小区中的MBSFN数据传输的调度的信息。 由此获得的信息被用于生成信息信号，该信息信号对于给定的子帧使得一个或多个用户设备能够确定是否可以使用正交频分多址（OFDM）符号的单播组来执行邻近小区测量 。 信息信号被发送到一个或多个用户设备，随后可以使用该信息来确定在进行相邻小区的测量时如何定位小区特定的参考符号。