公开(公告)号：US08050343B2

公开(公告)日：2011-11-01

申请号：US12324523

申请日：2008-11-26

申请人： Fredrik Nordström ,  Niklas Andgart ,  Bengt Lindoff

发明人： Fredrik Nordström ,  Niklas Andgart ,  Bengt Lindoff

IPC分类号： H04L27/28

CPC分类号： H04L5/0007 ,  H04L5/0042 ,  H04L27/2634 ,  H04L27/2647

摘要： A wireless communication system receiver receives and processes a signal comprising at least two component carriers carrying data scheduled to the receiver and having center frequencies spaced apart by at least one component carrier frequency difference. Each component carrier comprises a number of subcarriers spaced apart by a system subcarrier frequency spacing. A common divisor is obtained for the at least one component carrier frequency difference and the system subcarrier frequency spacing. A symbol is received on the subcarriers of the component carriers and downconverted to baseband to produce a baseband symbol. A block of padding values is inserted in the baseband symbol to produce a padded symbol. The length of the block of padding values is such that intermediate subcarriers are inserted to yield a subcarrier frequency spacing for the padded symbol equal to the common divisor. Finally the padded symbol is Fast Fourier Transform, FFT, processed.

摘要翻译： 无线通信系统接收机接收并处理包括至少两个分量载波的信号，所述至少两个分量载波携带调度到接收机的数据，并具有间隔至少一个分量载波频率差的中心频率。 每个分量载波包括通过系统子载波频率间隔间隔开的多个子载波。 获得至少一个分量载波频率差和系统子载波频率间隔的公约数。 在分量载波的子载波上接收符号并且下变频到基带以产生基带符号。 在基带符号中插入填充值块以产生填充符号。 填充值块的长度使得插入中间子载波以产生等于公约数的填充符号的子载波频率间隔。 最后，填充符号是快速傅里叶变换，FFT处理。

公开(公告)号：US08050369B2

公开(公告)日：2011-11-01

申请号：US12324381

申请日：2008-11-26

申请人： Bengt Lindoff ,  Niklas Andgart ,  Fredrik Nordström

发明人： Bengt Lindoff ,  Niklas Andgart ,  Fredrik Nordström

IPC分类号： H04B7/10

CPC分类号： H04L5/0007 ,  H04L5/0041 ,  H04L27/2657 ,  H04L27/2662 ,  H04W56/0035 ,  H04W56/0045

摘要： A receiver receives and front-end processes a plurality of component carrier signals, each carrier spaced apart in frequency. The digitized, baseband component carrier signals are inspected to determine estimates of timing offsets between the carriers. A control unit selects a first component carrier signal having data scheduled to the receiver. If data is scheduled to the receiver on other component carrier signals, the control unit generates timing and frequency offset adjustment control signals to time- and frequency-align each other component carrier signal having relevant data, to the first component carrier signal. All the relevant component carrier signals are then combined, and a single OFDM symbol, spanning all the relevant component carriers, is presented to an FFT for symbol detection.

摘要翻译： 接收机接收和前端处理多个分量载波信号，每个载波频率间隔开。 检查数字化的基带分量载波信号以确定载波之间的定时偏移的估计。 控制单元选择具有被调度给接收机的数据的第一分量载波信号。 如果在其他分量载波信号上将数据调度给接收机，则控制单元产生定时和频率偏移调整控制信号，以将具有相关数据的每个其它分量载波信号时间和频率对齐到第一分量载波信号。 然后组合所有相关的分量载波信号，将跨越所有相关分量载波的单个OFDM符号呈现给用于符号检测的FFT。

公开(公告)号：US08744020B2

公开(公告)日：2014-06-03

申请号：US13127044

申请日：2009-10-30

申请人： Niklas Andgart ,  Fredrik Nordström

发明人： Niklas Andgart ,  Fredrik Nordström

IPC分类号： H04L27/06

CPC分类号： H04L27/2659 ,  H04L5/0007 ,  H04L25/023

摘要： A frequency offset of a received signal comprising a number of subsequently received data symbols is estimated. A first estimate is determined from a calculated change in phase of the received signal between two received symbols having a first time distance between them. At least one further estimate is determined from a calculated change in phase of the received signal between two received symbols having a different time distance. A frequency periodicity is determined for each estimate from the distance between the two received symbols from which the estimate was determined. A set of integer values is determined for each estimate so that frequency values calculated for each estimate as the frequency periodicity multiplied by the integer value added to the estimate are at least approximately equal to each other, and a corrected estimate of the frequency offset is determined from the integer values.

摘要翻译： 估计包括多个随后接收的数据符号的接收信号的频率偏移。 从在它们之间具有第一时间距离的两个接收符号之间的接收信号的计算的相位变化确定第一估计。 从具有不同时间距离的两个接收符号之间的接收信号的计算的相位变化确定至少一个另外的估计。 根据确定估计的两个接收符号之间的距离为每个估计确定频率周期。 为每个估计确定一组整数值，使得为每个估计计算的频率值作为频率周期乘以加到估计的整数值至少近似相等，并且确定频率偏移的校正估计 从整数值。

公开(公告)号：US20120315941A1

公开(公告)日：2012-12-13

申请号：US13580566

申请日：2010-02-24

申请人： Niklas Andgart ,  Bengt Lindoff

发明人： Niklas Andgart ,  Bengt Lindoff

IPC分类号： H04W72/04 ,  H04W52/02

CPC分类号： H04W48/16 ,  H04W76/28

摘要： A mobile station comprises a radio communication unit (22) for communicating with a radio communication network for finding carriers on which transmissions are being made in active transmission intervals of a transmission cycle following a discontinuous transmission scheme. The radio communication unit is configured to select a carrier based on probability settings provided for each carrier of the scheme, scan the selected carrier during a time range that is a fraction of the transmission cycle, confirm the presence of the carrier if transmissions are detected and otherwise to adjust the probability settings of the carriers based on the timing of the scanning and the position of the carrier active transmission interval in the transmission sequence and repeat the selection of carrier based on probability settings and adjusting of probability settings until the presence of a carrier has been confirmed.

摘要翻译： 移动台包括无线电通信单元（22），用于与无线电通信网络进行通信，用于在不连续传输方案之后的发送周期的主动传输间隔中寻找正在进行传输的载波。 无线电通信单元被配置为基于为方案的每个载波提供的概率设置来选择载波，在作为传输周期的一部分的时间范围内扫描所选择的载波，如果检测到传输，则确认载波的存在; 否则将根据扫描的定时和发送序列中的载波活动传输间隔的位置来调整载波的概率设置，并基于概率设置重复载波的选择并调整概率设置，直到存在载波 已经确认。

公开(公告)号：US20120021769A1

公开(公告)日：2012-01-26

申请号：US13260524

申请日：2009-03-27

申请人： Bengt Lindoff ,  Niklas Andgart ,  Ari Kangas ,  Johan Nilsson

发明人： Bengt Lindoff ,  Niklas Andgart ,  Ari Kangas ,  Johan Nilsson

IPC分类号： H04W4/00

CPC分类号： G01S5/0063 ,  G01S5/0236 ,  G01S5/10 ,  H04W64/00

摘要： Methods and arrangements in a first network node, a second radio network node and a mobile terminal for enabling estimation of a position of a mobile terminal are provided. The first network node receives a request for estimating the position of the mobile terminal. The first network node determines a first set of radio network nodes including the second radio network node and two additional radio network nodes. The first network node determines positioning signals for transmission from radio network nodes of the first set to the mobile terminal. The first network node instructs each of the radio network nodes of the first set to transmit the positioning signal, associated therewith, to the mobile terminal.

摘要翻译： 提供了第一网络节点，第二无线电网络节点和用于使得能够估计移动终端的位置的移动终端的方法和布置。 第一网络节点接收用于估计移动终端的位置的请求。 第一网络节点确定包括第二无线电网络节点和两个另外的无线电网络节点的第一组无线电网络节点。 第一网络节点确定用于从第一组的无线电网络节点传送到移动终端的定位信号。 第一网络节点指示第一组的每个无线电网络节点将与其相关联的定位信号发送到移动终端。

公开(公告)号：US09813202B2

公开(公告)日：2017-11-07

申请号：US14405706

申请日：2012-09-28

申请人： Bengt Lindoff ,  Niklas Andgart ,  Fredrik Nordstrom

发明人： Bengt Lindoff ,  Niklas Andgart ,  Fredrik Nordstrom

IPC分类号： H04B1/04 ,  H04J3/00 ,  H04L5/00 ,  H04B1/7103 ,  H04J11/00

CPC分类号： H04L5/0032 ,  H04B1/7103 ,  H04B2201/70702 ,  H04B2201/70707 ,  H04J11/0056 ,  H04L5/0007

摘要： The present application relates to a method of a wireless device for interference cancellation (IC) in a cellular radio network system comprising a serving network node serving said wireless device. The method comprises using a first IC method for at least partly removing a time aligned symbol of an interfering radio signal from at least a first symbol of a time slot received from the serving network node. The method also comprises using a second IC method, different from the first IC method, for at least partly removing a non-time aligned symbol of an interfering radio signal from at least a second symbol of said time slot received from the serving network node.

公开(公告)号：US08498599B2

公开(公告)日：2013-07-30

申请号：US12143975

申请日：2008-06-23

申请人： Bengt Lindoff ,  Niklas Andgart ,  Muhammad Ali Kazmi ,  Anders Rosenqvist

发明人： Bengt Lindoff ,  Niklas Andgart ,  Muhammad Ali Kazmi ,  Anders Rosenqvist

IPC分类号： H04B17/00

CPC分类号： H04L25/0224 ,  H04B17/327 ,  H04B17/336 ,  H04L5/0007 ,  H04L25/0204

摘要： Methods and apparatus in a receiver for estimating a received power of at least one signal having a pattern known to the receiver, the signal having being transmitted by at least one antenna. A method includes using a first method of measuring the received power based on the pattern, the first method generating a first sequence of first power estimates; determining whether a predetermined first event has occurred; and if the first event has occurred, changing to a second method of measuring the received power, the second method being different from the first method and generating a second sequence of second power estimates.

摘要翻译： 用于估计具有接收机已知的模式的至少一个信号的接收功率的接收机中的方法和装置，该信号由至少一个天线发送。 一种方法包括使用基于所述模式来测量所述接收功率的第一方法，所述第一方法生成第一功率估计的第一序列; 确定是否发生了预定的第一事件; 并且如果发生了第一事件，则改变为测量接收功率的第二方法，所述第二方法与第一方法不同，并产生第二功率估计的第二序列。

公开(公告)号：US20120252446A1

公开(公告)日：2012-10-04

申请号：US13076599

申请日：2011-03-31

申请人： Andres Reial ,  Niklas Andgart ,  Bengt Lindoff ,  Lennart Moren ,  Anders Wallén

发明人： Andres Reial ,  Niklas Andgart ,  Bengt Lindoff ,  Lennart Moren ,  Anders Wallén

IPC分类号： H04W4/00

CPC分类号： H04W48/16 ,  H04W88/06

摘要： Methods and apparatus are provided for detecting the radio access technology (RAT) employed in a received signal prior to performing a cell search. The RAT detection method may be used to identify the most likely RAT employed for each candidate frequency identified in an initial frequency scan. Once the most likely RAT is identified, the mobile communication device can then attempt synchronization according to the procedures for the most likely RAT. Identifying the RAT prior to the cell search reduces the number of synchronization attempts and, consequently, the time needed to perform the cell search.

摘要翻译： 提供了用于在执行小区搜索之前检测在接收信号中采用的无线电接入技术（RAT）的方法和装置。 RAT检测方法可以用于识别在初始频率扫描中识别的每个候选频率所采用的最可能的RAT。 一旦识别出最可能的RAT，则移动通信设备然后可以根据最可能的RAT的过程尝试同步。 在小区搜索之前识别RAT减少了同步尝试的次数，因此减少了进行小区搜索所需的时间。

公开(公告)号：US20120052869A1

公开(公告)日：2012-03-01

申请号：US13319301

申请日：2009-05-08

申请人： Bengt Lindoff ,  Niklas Andgart ,  Ari Kangas ,  Anders Rosenqvist

发明人： Bengt Lindoff ,  Niklas Andgart ,  Ari Kangas ,  Anders Rosenqvist

IPC分类号： H04W72/04

CPC分类号： H04L5/0037 ,  H04J11/0069 ,  H04J13/18

摘要： Allocation of cell IDs in a cellular communication system includes determining a candidate allocation pattern of primary and secondary synchronization signal sequences for a candidate set of two or more cells. A performance metric is applied to the candidate allocation pattern to ascertain a performance indicator for the candidate allocation pattern, wherein the performance indicator indicates a quality of positioning performance for the candidate set of two or more cells. Cell-specific positioning performance for each cell in the candidate set of cells can be considered to derive the performance indicator of the candidate allocation pattern. If the performance indicator indicates acceptable positioning performance, primary and secondary synchronization signal sequences are allocated to respective ones of base stations corresponding to the two or more cells in accordance with the candidate allocation pattern. Otherwise, the process is repeated for a different candidate allocation pattern.

摘要翻译： 蜂窝通信系统中的小区ID的分配包括确定用于两个或更多个小区的候选组的主同步信号序列和辅同步信号序列的候选分配模式。 将性能度量应用于候选分配模式以确定候选分配模式的性能指标，其中性能指标指示两个或多个小区的候选集的定位性能的质量。 可以考虑候选小区集合中的每个小区的小区特定定位性能以导出候选分配模式的性能指标。 如果性能指示符指示可接受的定位性能，则根据候选分配模式将主同步信号序列和次同步信号序列分配给对应于两个或多个小区的基站中的相应基站。 否则，针对不同的候选分配模式重复该过程。

公开(公告)号：US20150146679A1

公开(公告)日：2015-05-28

申请号：US14405706

申请日：2012-09-28

申请人： Bengt Lindoff ,  Niklas Andgart ,  Fredrik Nordstrom

发明人： Bengt Lindoff ,  Niklas Andgart ,  Fredrik Nordstrom

IPC分类号： H04L5/00

CPC分类号： H04L5/0032 ,  H04B1/7103 ,  H04B2201/70702 ,  H04B2201/70707 ,  H04J11/0056 ,  H04L5/0007

摘要： The present application relates to a method of a wireless device for interference cancellation (IC) in a cellular radio network system comprising a serving network node serving said wireless device. The method comprises using a first IC method for at least partly removing a time aligned symbol of an interfering radio signal from at least a first symbol of a time slot received from the serving network node. The method also comprises using a second IC method, different from the first IC method, for at least partly removing a non-time aligned symbol of an interfering radio signal from at least a second symbol of said time slot received from the serving network node.

摘要翻译： 本申请涉及一种在蜂窝无线电网络系统中用于干扰消除（IC）的无线设备的方法，其包括服务于所述无线设备的服务网络节点。 该方法包括使用第一IC方法，用于从从服务网络节点接收的时隙的至少第一符号至少部分地去除干扰无线电信号的时间对准符号。 该方法还包括使用与第一IC方法不同的第二IC方法，用于从从服务网络节点接收的所述时隙的至少第二符号至少部分地去除干扰无线电信号的非时间对准符号。