公开(公告)号：US20110085627A1

公开(公告)日：2011-04-14

申请号：US12997116

申请日：2008-07-14

申请人： Ari Kangas ,  Reihaneh Malekafzaliardakani

发明人： Ari Kangas ,  Reihaneh Malekafzaliardakani

IPC分类号： H03D1/04

CPC分类号： H04L25/03006 ,  H04B7/0854 ,  H04L25/03343 ,  H04L2025/03426

摘要： Method and apparatus are provided for processing a received signal for making a symbol estimate of a symbol included in a signal transmitted in a Multiple-Input-Multiple-Output (MIMO) system. In an example mode, the method comprises (1) providing at least a sub-set of precoding matrices which are candidates for use in transmission of an interfering signal in a MIMO system; (2) using the received signal and plural candidates of the subset to determine corresponding plural covariance matrices, each of the plural covariance matrices being formed using a corresponding candidate precoding matrix; (3) determining which of the candidates is a trace minimizing candidate which is associated with one of the plural covariance matrices that has a minimum trace value; (4) forming a weighting matrix using the trace minimizing candidate; and (5) using the weighting matrix to make the symbol estimation.

摘要翻译： 提供了用于处理接收信号以进行在多输入多输出（MIMO）系统中传输的信号中包括的符号的符号估计的方法和装置。 在示例模式中，该方法包括：（1）提供至少一个预编码矩阵子集，其是在MIMO系统中用于传输干扰信号的候选者; （2）使用所述接收信号和所述子集的多个候选来确定对应的多个协方差矩阵，使用相应的候选预编码矩阵来形成所述多个协方差矩阵中的每一个; （3）确定哪个候选是与具有最小迹线值的多个协方差矩阵之一相关联的跟踪最小化候选; （4）使用跟踪最小化候选来形成加权矩阵; 和（5）使用加权矩阵进行符号估计。

公开(公告)号：US08401106B2

公开(公告)日：2013-03-19

申请号：US12997116

申请日：2008-07-14

申请人： Ari Kangas ,  Reihaneh Malekafzaliardakani

发明人： Ari Kangas ,  Reihaneh Malekafzaliardakani

IPC分类号： H04B7/02

CPC分类号： H04L25/03006 ,  H04B7/0854 ,  H04L25/03343 ,  H04L2025/03426

摘要： Method and apparatus are provided for processing a received signal for making a symbol estimate of a symbol included in a signal transmitted in a Multiple-Input-Multiple-Output (MIMO) system. In an example mode, the method comprises (1) providing at least a subset of precoding matrices which are candidates for use in transmission of an interfering signal in a MIMO system; (2) using the received signal and plural candidates of the subset to determine corresponding plural covariance matrices, each of the plural covariance matrices being formed using a corresponding candidate precoding matrix; (3) determining which of the candidates is a trace minimizing candidate which is associated with one of the plural covariance matrices that has a minimum trace value; (4) forming a weighting matrix using the trace minimizing candidate; and (5) using the weighting matrix to make the symbol estimation.

摘要翻译： 提供了用于处理接收信号以进行在多输入多输出（MIMO）系统中传输的信号中包括的符号的符号估计的方法和装置。 在一个示例模式中，该方法包括：（1）提供至少一个预编码矩阵的子集，该子集是在MIMO系统中用于传输干扰信号的候选者; （2）使用所述接收信号和所述子集的多个候选来确定对应的多个协方差矩阵，使用相应的候选预编码矩阵来形成所述多个协方差矩阵中的每一个; （3）确定哪个候选是与具有最小迹线值的多个协方差矩阵之一相关联的跟踪最小化候选; （4）使用跟踪最小化候选来形成加权矩阵; 和（5）使用加权矩阵进行符号估计。

公开(公告)号：US09307420B2

公开(公告)日：2016-04-05

申请号：US13876099

申请日：2010-10-01

申请人： Torbjörn Wigren ,  Henrik Egnell ,  Ari Kangas

发明人： Torbjörn Wigren ,  Henrik Egnell ,  Ari Kangas

IPC分类号： H03D1/04 ,  H04W24/02 ,  H04B1/7097 ,  H04B17/345

CPC分类号： H04W24/02 ,  H04B1/7097 ,  H04B17/345

摘要： A method for noise rise estimation in a wireless communication system comprises measuring (210) of received total wideband power of an antenna a plurality of times. An estimate of a noise floor measure is computed (212) based on at least a number of the measured received total wideband powers of the antenna. Interference whitening of a received signal is performed (214) per user for a multitude of users. A useful signal power per user after the interference whitening, preferably Frequency Domain Equalization, is determined (216). A noise rise measure per user is calculated (220), based at least on the useful signal power per user and the noise floor measure. The calculation in turn comprises compensation of the noise rise measure per user for the effects of the interference whitening. An arrangement for noise rise estimation is adapted for such a method. A radio base station comprises such an arrangement.

摘要翻译： 一种用于无线通信系统中的噪声上升估计的方法包括多次测量（210）所接收的天线总宽带功率。 基于天线的测量的接收总宽带功率的至少一个数量来计算噪声基底测量的估计（212）。 对于多个用户，对每个用户执行接收信号的干扰增白（214）。 干扰白化之后每个用户有用的信号功率（最好是频域均衡）被确定（216）。 至少基于每个用户的有用信号功率和噪声本底测量，每个用户的噪声上升量测量（220）被计算（220）。 该计算依次包括对每个用户对干扰美白的影响的噪声上升测量的补偿。 用于噪声上升估计的装置适用于这种方法。 无线基站包括这样一种布置。

公开(公告)号：US09054903B2

公开(公告)日：2015-06-09

申请号：US14125511

申请日：2011-06-10

申请人： Ari Kangas ,  Henrik Egnell ,  Stephane Tessier

发明人： Ari Kangas ,  Henrik Egnell ,  Stephane Tessier

IPC分类号： H04B14/06 ,  H04L27/01 ,  H04B1/7105 ,  H04B1/712 ,  H04B1/7115

CPC分类号： H04L27/01 ,  H04B1/7105 ,  H04B1/7115 ,  H04B1/712 ,  H04B2201/709727

摘要： A method for equalizing a received radio signal in a WCDMA system, comprises receiving (210), in a radio receiver, of a digital radio signal spread by scrambling codes. A channel estimation is performed (230) on the received digital radio signal for a plurality of channels. The received digital radio signal is in an equalizer equalized (240) into an equalized digital radio signal. This equalizing is performed by combining a plurality of part signals, deduced from the digital radio signal, with a respective delay and a respective combining weight. The equalizing (240) comprises provision of the combining weights based on a signal impairment matrix having elements compensated for systematic colouring caused by said scrambling codes.

摘要翻译： 一种用于在WCDMA系统中均衡接收的无线电信号的方法，包括在无线电接收机中接收（210）由扰码扩展的数字无线电信号。 在多个信道的接收的数字无线电信号上执行信道估计（230）。 所接收的数字无线电信号是均衡的（240）均衡的数字无线电信号。 通过将从数字无线电信号推导出的多个部分信号与相应的延迟和相应的组合权重组合来执行该均衡。 均衡（240）包括基于具有由所述扰码引起的系统着色补偿的元素的信号损伤矩阵来提供组合权重。

公开(公告)号：US20130315216A1

公开(公告)日：2013-11-28

申请号：US13985007

申请日：2011-03-01

申请人： Ari Kangas ,  Anders Lamm ,  Torbjörn Wigren

发明人： Ari Kangas ,  Anders Lamm ,  Torbjörn Wigren

IPC分类号： H04W52/14

CPC分类号： H04W52/146 ,  H04B1/711 ,  H04B17/391 ,  H04L25/0204 ,  H04L25/0224 ,  H04W52/221 ,  H04W52/225

摘要： A method for uplink channel estimation comprises providing (210) of a channel state model in a channel estimator. An up-link radio signal of a present time slot is obtained (220) in the channel estimator as well as a series of transmit power control commands (230) issued for controlling a transmit power of the uplink radio signal. A delay between the time a transmit power control command is issued and the time that the transmit power control command is applied is estimated (232) based on measurements of the particular received uplink radio signal. Channel states are adapted (234) based on a transmit power control command compatible with the estimated delay. After the adaptation, channel states of the present time slot are estimated (240) in the channel estimator, by tracking the demodulated uplink radio signal with the channel state model. A channel estimator performing such method is also described.

摘要翻译： 一种用于上行链路信道估计的方法包括在信道估计器中提供（210）信道状态模型。 在信道估计器中获得当前时隙的上行链路无线电信号（220），以及一系列用于控制上行链路无线电信号的发射功率的发射功率控制命令（230）。 基于特定接收的上行链路无线电信号的测量，估计发送功率控制命令发出的时间与发射功率控制命令的施加时间之间的延迟（232）。 基于与所估计的延迟兼容的发射功率控制命令来适应信道状态（234）。 在适配之后，通过跟踪具有信道状态模型的解调的上行链路无线电信号，在信道估计器中估计（240）当前时隙的信道状态。 还描述了执行这种方法的信道估计器。

公开(公告)号：US08489098B2

公开(公告)日：2013-07-16

申请号：US13148190

申请日：2009-03-20

申请人： Torbjörn Wigren ,  Ari Kangas

发明人： Torbjörn Wigren ,  Ari Kangas

IPC分类号： H04W88/02

CPC分类号： H04W36/08 ,  G01S5/10 ,  G01S5/14 ,  H04W64/00

摘要： In a method of providing real time difference determination for a mobile terminal in a telecommunication system, comprising a plurality of eNodeBs in communication with a core network, each eNodeB having a plurality of associated cells, each cell potentially servicing one or more mobile terminals, determining S1O a first timing advance value representative of a first geographical distance measure between the mobile terminal and a first serving eNodeB prior to a handover to a second serving eNode B, determining S20 a second timing advance value representative of a second geographical distance measure between the mobile terminal and the second eNodeB after the handover. Subsequently, determining S30 a time of arrival measure between the mobile terminal and at least two eNodeBs, and signaling S40 representations of the determined first and second geographical distance measures and the determined time of arrival measures for said mobile terminal to at least said second eNodeB, together with a respective unique identification parameter of the at least two eNodeBs, wherein determination of real time differences is enabled based on at least the signaled representations.

摘要翻译： 在为电信系统中的移动终端提供实时差分确定的方法中，包括与核心网络通信的多个eNodeB，每个eNodeB具有多个相关联的小区，每个小区可能为一个或多个移动终端提供服务，确定 S10表示在切换到第二服务eNode B之前在移动终端和第一服务eNodeB之间的第一地理距离度量的第一定时提前值，确定S20表示移动台之间的第二地理距离度量的第二定时提前值 终端和第二eNodeB之后。 随后，确定S30移动终端与至少两个eNodeB之间的到达时间测量值，以及所确定的第一和第二地理距离测量的信令S40表示以及所确定的所述移动终端到达至少所述第二eNodeB的到达时间测量， 以及所述至少两个eNodeB的相应的唯一识别参数，其中基于至少所述信号表示来启用实时差异的确定。

公开(公告)号：US20120258729A1

公开(公告)日：2012-10-11

申请号：US13262533

申请日：2011-07-12

申请人： Iana Siomina ,  Ari Kangas ,  Torbjörn Wigren

发明人： Iana Siomina ,  Ari Kangas ,  Torbjörn Wigren

IPC分类号： H04W4/02

CPC分类号： H04W64/00 ,  G01S3/28 ,  G01S5/0215 ,  G01S5/04 ,  G01S5/08

摘要： The position of a mobile device served in a cell of a serving node of a wireless communication network is estimated by estimating an angle-of-arrival (AoA) between the mobile device and the serving node based on a precoding matrix indicator (PMI) determined for the serving node in a downlink direction or for the mobile device in an uplink direction. Also estimated is the AoA between the mobile device and a non-serving neighbor node of the wireless communication network based on a PMI determined for the neighbor node in the downlink direction or for the mobile device in the uplink direction. The downlink and/or uplink AoA estimation can be further enhanced by employing interference cancellation in the mobile device and in the radio node, respectively. The position of the mobile device is estimated based on the estimated AoAs.

摘要翻译： 通过基于确定的预编码矩阵指示符（PMI）估计移动设备和服务节点之间的到达角（AoA）来估计在无线通信网络的服务节点的小区中服务的移动设备的位置 对于下行链路方向上的服务节点或者在上行链路方向上对于移动设备。 还估计基于为下行链路方向上的相邻节点确定的PMI或在上行链路方向上为移动设备确定的PMI的移动设备和无线通信网络的非服务邻居节点之间的AoA。 通过在移动设备和无线电节点中分别采用干扰消除，可以进一步增强下行链路和/或上行链路AoA估计。 基于估计的AoAs来估计移动设备的位置。

公开(公告)号：US08134990B2

公开(公告)日：2012-03-13

申请号：US12961037

申请日：2010-12-06

申请人： Ari Kangas ,  Iana Siomina

发明人： Ari Kangas ,  Iana Siomina

IPC分类号： H04B7/216

CPC分类号： G01S5/0215 ,  G01S5/02 ,  G01S5/0221 ,  H04L27/2647

摘要： A wireless device (24) receives a reference signal over a radio channel (21). The reference signal may be Positioning Reference Signals (PRS) and/or Common Referencing Signals (CRS), and may be transmitted from a transmitter (22). The wireless device (24) comprises a correlator (100); a reference signal detector (102); a threshold selector (106); and a reference signal analyzer (108). The correlator (100) use a signal received from the radio channel (21) and a replica of the reference signal to provide a correlator output value. The reference signal detector (102) compares the correlator output value with a threshold value to detect presence of a reference signal, and to estimate an arrival time of the reference signal. The threshold selector (106) adapts the threshold value to at least an estimate of a relative amount of noise and interference power in the received signal.

摘要翻译： 无线设备（24）通过无线电信道（21）接收参考信号。 参考信号可以是定位参考信号（PRS）和/或公共参考信号（CRS），并且可以从发射机（22）发射。 无线设备（24）包括相关器（100）; 参考信号检测器（102）; 阈值选择器（106）; 和参考信号分析器（108）。 相关器（100）使用从无线电信道（21）接收的信号和参考信号的副本来提供相关器输出值。 参考信号检测器（102）将相关器输出值与阈值进行比较，以检测参考信号的存在，并估计参考信号的到达时间。 阈值选择器（106）将阈值适应于接收信号中噪声和干扰功率的相对量的至少估计。

公开(公告)号：US20110105144A1

公开(公告)日：2011-05-05

申请号：US12805809

申请日：2010-08-19

申请人： Iana Siomina ,  Ari Kangas

发明人： Iana Siomina ,  Ari Kangas

IPC分类号： H04W24/00

CPC分类号： H04W64/00 ,  G01S5/0215 ,  G01S5/0236 ,  G01S5/0268 ,  G01S5/10 ,  H04L5/0048 ,  H04W72/1226

摘要： GPS and A-GPS based positioning methods can be used to determine UE locations to enable location based services to be provided. However, if a UE does not have such receivers or the wireless network is not able to provide assistance, these methods will not be applicable. An alternative is to use OTDOA measurements using positioning reference signals transmitted by cells of the network. By optimizing the set of cells transmitting their positioning reference signals on different positioning occasions and properly configuring the muting patterns, interference can be minimized and the UE location can be readily determined.

摘要翻译： 可以使用基于GPS和A-GPS的定位方法来确定UE的位置，以便提供基于位置的服务。 然而，如果UE没有这样的接收机或者无线网络不能提供帮助，则这些方法将不适用。 另一种方法是使用OTDOA测量，使用由网络单元传输的定位参考信号。 通过在不同的定位场合优化传输其定位参考信号的小区集合并且适当地配置静音模式，可以最小化干扰并且可以容易地确定UE的位置。

公开(公告)号：US20100173645A1

公开(公告)日：2010-07-08

申请号：US12063529

申请日：2006-08-02

申请人： Ari Kangas

发明人： Ari Kangas

IPC分类号： H04W24/00

CPC分类号： G01S5/06 ,  G01S5/0221

摘要： The present invention relates to a method and an arrangement in a mobile telecommunication network for detection of a UE transmitted signal. The arrangement comprises means for detecting the signal during the time ttot, wherein said means comprises a correlator adapted for combined coherent and non-coherent correlation, wherein the length of the coherent A correlation interval is L signal samples, the number of coherent correlation intervals is M and the coherent correlation results in a coherent correlation result for each of the coherent detection intervals M, and means for adding the coherent correlation results non-coherently. Further, the arrangement comprises means for selecting one of the length L of coherent detection interval and the total detection interval ttot based on at least one of the parameters cell size, UE speed and acceleration, number of participating Location Measurements Units and a desired total false alarm rate.

摘要翻译： 本发明涉及移动电信网络中用于检测UE发射信号的方法和装置。 该装置包括用于在时间ttot期间检测信号的装置，其中所述装置包括适于组合相干和非相干相关的相关器，其中相干A相关间隔的长度为L个信号样本，相干相关间隔的数量为 M和相干相关导致每个相干检测间隔M的相干相关结果，以及用于非相干地相加相干相关结果的装置。 此外，该装置包括用于基于参数小区大小，UE速度和加速度，参与的位置测量单元的数量和期望的总假设中的至少一个来选择相干检测间隔的长度L和总检测间隔ttot中的一个的装置 报警率。