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1. 发明授权

US08798176B2 Joint time/frequency processing for wireless receivers 有权
标题翻译：无线接收机的联合时间/频率处理
公开(公告)号：US08798176B2
公开(公告)日：2014-08-05
申请号：US12500891
申请日：2009-07-10
申请人： Douglas A. Cairns , Andres Reial , Anders Wallén
发明人： Douglas A. Cairns , Andres Reial , Anders Wallén
IPC分类号： H04K1/10 , H04L27/28
CPC分类号： H04L25/03261 , H04L25/03235
摘要： Channel estimation and/or equalization processing is performed in a wireless receiver in two stages. The first stage involves pre-filtering in the frequency domain to compact a grid-based representation of the net channel. The second stage involves implementing reduced-complexity time domain channel estimation and/or equalization. According to one embodiment, a received signal transmitted over a net channel is processed by pre-filtering the received signal in the frequency domain. The frequency domain pre-filtering compacts an N-tap effective grid-based representation of the net channel into a K-tap compacted grid-based representation of the net channel where K
摘要翻译：信道估计和/或均衡处理在两个阶段中在无线接收机中执行。第一阶段涉及在频域中进行预滤波以压缩网络通道的基于网格的表示。第二阶段涉及实现降低复杂度的时域信道估计和/或均衡。根据一个实施例，通过净频道发送的接收信号通过对频域中的接收信号进行预滤波来处理。频域预滤波将网络通道的N抽头有效网格表示压缩成K

2. 发明授权

US08938038B2 Extending the set of addressable interferers for interference mitigation 有权
标题翻译：扩展用于干扰减轻的一组可寻址干扰源
公开(公告)号：US08938038B2
公开(公告)日：2015-01-20
申请号：US13364856
申请日：2012-02-02
申请人： Andres Reial , Anders Wallén
发明人： Andres Reial , Anders Wallén
IPC分类号： H03D3/00
CPC分类号： H04J11/005 , H04B1/7103 , H04B1/7107 , H04J11/0059
摘要： Techniques for expanding the set of addressable interfering signals in an interference cancelling receiver are described, where the task of control message detection from interfering cells is integrated in an iterative receiver process where increasingly better a priori information on the received data signals from the previous iteration is used to detect additional control messages and successively grow the set of interfering signals included in the receiver's interference mitigation processing. In an example method, first estimated symbols for a desired signal are generated. A control channel corresponding to a first interfering signal is detected, where said detecting is based on the first estimated symbols. Signal characteristics information for the first interfering signal is then derived from the detected control channel signal, and used to generate second estimated symbols for the desired signal, using an interference-mitigation technique to mitigate the effects of the interfering signal.
摘要翻译：描述了用于在干扰消除接收机中扩展可寻址干扰信号集合的技术，其中来自干扰小区的控制消息检测的任务被集成在迭代接收机过程中，其中越来越好的来自先前迭代的接收数据信号的先验信息是用于检测附加的控制消息并且连续地增加包括在接收机的干扰减轻处理中的干扰信号集合。在示例性方法中，产生用于期望信号的第一估计符号。检测对应于第一干扰信号的控制信道，其中所述检测基于第一估计符号。然后从检测到的控制信道信号导出第一干扰信号的信号特征信息，并且使用干扰减轻技术来产生用于期望信号的第二估计符号，以减轻干扰信号的影响。

3. 发明授权

US08498640B2 Fast radio access technology detection for cell search 有权
标题翻译：快速无线接入技术检测小区搜索
公开(公告)号：US08498640B2
公开(公告)日：2013-07-30
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。

4. 发明申请

US20130202063A1 Extending the Set of Addressable Interferers for Interference Mitigation 有权
标题翻译：扩展一组可寻址干扰者的干扰减轻
公开(公告)号：US20130202063A1
公开(公告)日：2013-08-08
申请号：US13364856
申请日：2012-02-02
申请人： Andres Reial , Anders Wallén
发明人： Andres Reial , Anders Wallén
IPC分类号： H04B1/10
CPC分类号： H04J11/005 , H04B1/7103 , H04B1/7107 , H04J11/0059
摘要： Techniques for expanding the set of addressable interfering signals in an interference cancelling receiver are described, where the task of control message detection from interfering cells is integrated in an iterative receiver process where increasingly better a priori information on the received data signals from the previous iteration is used to detect additional control messages and successively grow the set of interfering signals included in the receiver's interference mitigation processing. In an example method, first estimated symbols for a desired signal are generated. A control channel corresponding to a first interfering signal is detected, where said detecting is based on the first estimated symbols. Signal characteristics information for the first interfering signal is then derived from the detected control channel signal, and used to generate second estimated symbols for the desired signal, using an interference-mitigation technique to mitigate the effects of the interfering signal.
摘要翻译：描述了用于在干扰消除接收机中扩展可寻址干扰信号集合的技术，其中来自干扰小区的控制消息检测的任务被集成在迭代接收机过程中，其中越来越好的来自先前迭代的接收数据信号的先验信息是用于检测附加的控制消息并且连续地增加包括在接收机的干扰减轻处理中的干扰信号集合。在示例性方法中，产生用于期望信号的第一估计符号。检测对应于第一干扰信号的控制信道，其中所述检测基于第一估计符号。然后从检测到的控制信道信号导出第一干扰信号的信号特征信息，并且使用干扰减轻技术来产生用于期望信号的第二估计符号，以减轻干扰信号的影响。

5. 发明申请

US20120252446A1 Fast Radio Access Technology Detection for Cell Search 有权
标题翻译：用于小区搜索的快速无线接入技术检测
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。

6. 发明授权

US09538546B2 Processing-time dependent control of data block transmission 有权
标题翻译：数据块传输的处理时间依赖控制
公开(公告)号：US09538546B2
公开(公告)日：2017-01-03
申请号：US14380089
申请日：2012-02-21
申请人： Joachim Sachs , Kumar Balachandran , Konstantinos Dimou , Erik Eriksson , Michael Meyer , Johan Rune , Anders Wallén , Henning Wiemann , Leif Wilhelmsson
发明人： Joachim Sachs , Kumar Balachandran , Konstantinos Dimou , Erik Eriksson , Michael Meyer , Johan Rune , Anders Wallén , Henning Wiemann , Leif Wilhelmsson
IPC分类号： H04W72/12 , H04W52/02
CPC分类号： H04W72/1205 , H04W52/0216 , H04W72/12 , Y02D70/1242 , Y02D70/1262 , Y02D70/21
摘要： A node (100; 300) of a mobile network is responsible for scheduling transmissions of data blocks between the mobile network and a terminal device (200, 200′). The node (100; 300) may for example be a base station (100) or a control node (300) of the mobile network. The node (100; 300) determines a processing time required by the terminal device (200; 200′) for processing signals for transmission of one of the data blocks. The processing time is determined from a plurality of supported processing times. On the basis of the determined processing time, the node (100; 300) schedules the transmission of the data block. The terminal device (200, 200′) may provide control data for determining the processing time to the node (100; 300).
摘要翻译：移动网络的节点（100; 300）负责调度移动网络和终端设备（200,200'）之间的数据块的传输。节点（100; 300）可以例如是移动网络的基站（100）或控制节点（300）。节点（100; 300）确定终端设备（200; 200'）所需的用于处理用于发送数据块之一的信号的处理时间。处理时间由多个支持的处理时间确定。在确定的处理时间的基础上，节点（100; 300）调度数据块的传输。终端设备（200,200'）可以提供用于确定到节点（100; 300）的处理时间的控制数据。

7. 发明授权

US08594000B2 Apparatus and method for controlling self-interference in a cellular communications system 有权
标题翻译：用于控制蜂窝通信系统中的自干扰的装置和方法
公开(公告)号：US08594000B2
公开(公告)日：2013-11-26
申请号：US13144784
申请日：2011-06-14
申请人： Klas Johansson , Niilo Musikka , Henrik Nyberg , Anders Wallén
发明人： Klas Johansson , Niilo Musikka , Henrik Nyberg , Anders Wallén
IPC分类号： H04B1/44
CPC分类号： H04W72/082 , H04W72/0453 , H04W88/08
摘要： The invention relates to a radio base station (102) and method in a radio base station of a cellular communications system (100) for controlling self-interference. The radio base station (102) supports communication with a user equipment (101) using multiple uplink and multiple downlink carriers (104a, 104b, 105a, 105b). The method comprises detecting a degraded downlink performance on a downlink carrier (105a) due to self-interference by determining that a set of predefined conditions applies. The method further comprises executing, in response to detection of the degraded downlink performance, an action to reduce self-interference between the uplink and downlink carriers (104a, 104b, 105a, 105b). The action is one of: uplink scheduling to reduce self-interference, deactivation of a secondary uplink carrier (14a, 104b), deactivation of a secondary downlink carrier (105a, 105b), and initiation of carrier reconfiguration to reduce self-interference. Accordingly, benefits of using multi-carrier operation may be balanced against a possible associated drawback of degraded downlink performance due to self-interference.
摘要翻译：本发明涉及用于控制自干扰的蜂窝通信系统（100）的无线基站中的无线基站（102）和方法。无线电基站（102）支持使用多个下行链路载波（104a，104b，105a，105b）与用户设备（101）的通信。该方法包括通过确定一组预定义条件适用来检测由于自干扰在下行链路载波（105a）上的劣化的下行链路性能。该方法还包括响应于对劣化的下行链路性能的检测，执行减少上行链路和下行链路载波（104a，104b，105a，105b）之间的自干扰的动作。该动作是：减少自干扰的上行链路调度，二次上行链路载波（14a，104b）的去激活，二次下行链路载波（105a，105b）的去激活以及载波重配置的启动以减少自干扰。因此，使用多载波操作的好处可以与由于自干扰引起的下行链路性能下降的可能的相关缺点进行平衡。

8. 发明授权

US08041318B2 Relative frequency error compensation for multi-carrier receivers 有权
标题翻译：多载波接收机的相对频率误差补偿
公开(公告)号：US08041318B2
公开(公告)日：2011-10-18
申请号：US12248756
申请日：2008-10-09
申请人： Oskar Drugge , Farshid Ghasemzadeh , Anders Wallén
发明人： Oskar Drugge , Farshid Ghasemzadeh , Anders Wallén
IPC分类号： H04B17/02 , H04K3/00
CPC分类号： H04L27/0014 , H04L2027/0024
摘要： A wireless receiver utilizes a single analog oscillator to down-convert multi-carrier signals in one or more receiver front-end paths. The received signals are digitized, and the different carrier signals received at each antenna are separated in digital domain by mixing the digitized signal from each antenna with a carrier/antenna separation digital oscillator to down-convert a desired carrier signal and low-pass filtering to remove unwanted carriers. A coarse frequency correction adjusts the analog oscillator, and fine frequency corrections adjust digital oscillators mixing with the separated signals. In one embodiment, the fine frequency correction is applied to the carrier/antenna separation digital oscillators in the separation function. In another embodiment, the fine frequency correction is applied to frequency adjustment digital oscillators mixing with the separated signals. The frequency corrections may be based on reference symbols in the received signals.
摘要翻译：无线接收机利用单个模拟振荡器来降低一个或多个接收机前端路径中的多载波信号。接收的信号被数字化，并且在每个天线处接收的不同的载波信号在数字域中被分离，通过将来自每个天线的数字化信号与载波/天线分离数字振荡器混频以将期望的载波信号和低通滤波下变频删除不需要的运营商。粗略的频率校正调整模拟振荡器，精细的频率校正调整与分离的信号混合的数字振荡器。在一个实施例中，精细频率校正被应用于分离功能中的载波/天线分离数字振荡器。在另一个实施例中，精细频率校正被应用于与分离的信号混合的频率调节数字振荡器。频率校正可以基于接收信号中的参考符号。

9. 发明授权

US07675846B2 Method and system for using the synchronization channel to obtain measurements in a cellular communications system 有权
标题翻译：用于使用同步信道在蜂窝通信系统中获得测量的方法和系统
公开(公告)号：US07675846B2
公开(公告)日：2010-03-09
申请号：US11566508
申请日：2006-12-04
申请人： Bengt Lindoff , Anders Wallén
发明人： Bengt Lindoff , Anders Wallén
IPC分类号： H04J11/00
CPC分类号： H04L27/261 , H04J11/0093 , H04L27/2656 , H04L27/2684 , H04W24/00 , H04W36/30 , H04W48/08 , H04W56/00 , H04W88/02
摘要： A method and apparatus that utilizes the synchronization channel (SCH) by the user equipment (UE) to obtain time synchronization information and to perform cell search. In order to perform the SCH detection, only a correlation between the known SCH signal and the received sequence is needed, hence the FFT is not involved in the synchronization step. Typically the SCH and pilot symbols are transmitted with a constant power which is the same for all base stations. Hence, based on the serving cell (SC) SCH and pilot symbols, the power relation between these signals is estimated and the ratio applied when performing time synchronization to other cells (i.e. correlation the received sequence with the SCH from that particular NC) to estimate the pilot signal strength for the NB cell.
摘要翻译：利用用户设备（UE）的同步信道（SCH）获取时间同步信息并执行小区搜索的方法和装置。为了执行SCH检测，仅需要已知SCH信号和接收到的序列之间的相关性，因此在同步步骤中不涉及FFT。通常，SCH和导频符号以对于所有基站相同的恒定功率发送。因此，基于服务小区（SC）SCH和导频符号，估计这些信号之间的功率关系，并且当与其他小区进行时间同步时（即，将来自该特定NC的SCH的接收序列相关）估计 NB电池的导频信号强度。

10. 发明授权

US08909267B2 Energy-efficient detection of network connection requests 有权
标题翻译：节能检测网络连接请求
公开(公告)号：US08909267B2
公开(公告)日：2014-12-09
申请号：US13451088
申请日：2012-04-19
申请人： Leif Wilhelmsson , Bengt Lindoff , Thomas Olsson , Anders Wallén
发明人： Leif Wilhelmsson , Bengt Lindoff , Thomas Olsson , Anders Wallén
IPC分类号： H04B7/00
CPC分类号： H04W52/0245 , Y02D70/1262 , Y02D70/21
摘要： Embodiments herein include a method implemented by a wireless device for detecting requests to connect to a wireless communications network. The method includes determining a receiver sensitivity that is sufficient, given channel conditions at the device, for the device to detect connection requests. The method then entails dynamically selecting, from among different receiver sensitivity configurations of the device, a configuration that has a receiver sensitivity at least as good as the determined sensitivity and that has less energy consumption than at least one other configuration. Finally, the method includes using the selected configuration for request detection. A wireless device herein thereby reduces its energy consumption when it is disconnected from the network, but intelligently limits the extent of that energy consumption reduction in order to maintain an ability to detect network connection requests.
摘要翻译：这里的实施例包括由无线设备实现的用于检测连接到无线通信网络的请求的方法。该方法包括在给定设备的信道条件下，确定接收机灵敏度足以使设备检测到连接请求。该方法然后需要从设备的不同接收机灵敏度配置中动态地选择具有至少与确定的灵敏度一样好的接收机灵敏度并且具有比至少一个其它配置更少的能量消耗的配置。最后，该方法包括使用所选配置进行请求检测。因此，这里的无线设备在其与网络断开连接时降低了其能量消耗，但是智能地限制了该能量消耗降低的范围，以便维持检测网络连接请求的能力。

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