公开(公告)号：US09363779B2

公开(公告)日：2016-06-07

申请号：US13230348

申请日：2011-09-12

申请人： Francesc Boixadera ,  Craig E. Burnet ,  Cyril Valadon

发明人： Francesc Boixadera ,  Craig E. Burnet ,  Cyril Valadon

IPC分类号： H04W72/04 ,  H04B7/005 ,  H04W76/06 ,  H04W56/00 ,  H04W36/08

CPC分类号： H04W56/0045 ,  H04W36/08 ,  H04W76/30

摘要： Techniques are provided for reducing interference in a wireless network. A user equipment device in a first wireless coverage area of a wireless network using a time division duplex transmission scheme to designate a maximum timing advance value for uplink transmissions based on potential interference between uplink transmissions made by the user equipment device in the first wireless coverage area or at least one other user equipment device in the first wireless coverage area, and downlink transmissions intended for at least one user equipment device in a second wireless coverage area of the wireless network. The maximum timing advance value may be based on relative cell radii or other cell properties of the first and second wireless coverage areas. A base station may determine the maximum timing advance and transmit the maximum timing advance to the user equipment device.

摘要翻译： 提供了用于减少无线网络中的干扰的技术。 一种无线网络的第一无线覆盖区域中的用户设备，其使用时分双工传输方式，基于所述用户设备在所述第一无线覆盖区域中进行的上行链路传输之间的潜在干扰来指定上行链路传输的最大定时提前值 或第一无线覆盖区域中的至少一个其他用户设备设备，以及旨在用于无线网络的第二无线覆盖区域中的至少一个用户设备设备的下行链路传输。 最大定时提前值可以基于第一和第二无线覆盖区域的相对小区半径或其他小区属性。 基站可以确定最大定时提前并将最大定时提前发送到用户设备设备。

公开(公告)号：US20130308472A1

公开(公告)日：2013-11-21

申请号：US13542050

申请日：2012-07-05

申请人： Abdelkader Medles ,  Cyril Valadon

发明人： Abdelkader Medles ,  Cyril Valadon

IPC分类号： H04W24/00

CPC分类号： H04L25/0232 ,  H04B17/309 ,  H04B17/327 ,  H04B17/336 ,  H04B17/345 ,  H04L5/0005

摘要： Techniques are provided for a radio link quality monitoring method and apparatus wherein a given user equipment device receives a plurality of Orthogonal Frequency Division Multiplex symbols that comprise a plurality of resource elements distributed in time and frequency, and which include reference symbols. The objective of the radio link quality monitoring is to predict the user equipment detection probability of control messages transmitted by the base station. The radio link quality estimation process calculates two average signal to noise ratio values over the complete frequency bandwidth for two assumed control channel formats corresponding to in-sync and out-of-sync conditions. The results of the calculations are then used to deduce the average error probabilities that are compared with predefined thresholds to provide the in-sync/out-of-sync indications.

摘要翻译： 提供了一种用于无线电链路质量监测方法和装置的技术，其中给定的用户设备设备接收包括在时间和频率上分布的并且包括参考符号的多个资源元素的多个正交频分复用符号。 无线电链路质量监测的目的是预测由基站发送的控制消息的用户设备检测概率。 无线链路质量估计过程针对对应于同步和不同步条件的两个假设的控制信道格式，在完整频率带宽上计算两个平均信噪比值。 然后使用计算结果推导出与预定义阈值进行比较以提供同步/失步指示的平均误差概率。

公开(公告)号：US08139681B2

公开(公告)日：2012-03-20

申请号：US11662574

申请日：2005-09-09

申请人： James Chapman ,  Simon Richardson ,  Cyril Valadon ,  Navid Fatemi-Ghomi

发明人： James Chapman ,  Simon Richardson ,  Cyril Valadon ,  Navid Fatemi-Ghomi

IPC分类号： H03K9/00

CPC分类号： H04L27/2277 ,  H04L25/0224 ,  H04L2027/0032 ,  H04L2027/0055 ,  H04L2027/0061 ,  H04L2027/0067 ,  H04L2027/0095

摘要： A communications signal is received through a propagation channel, down-converted in frequency and then converted into a digital signal. The samples of the digital signal are processed to estimate the information conveyed by the communications signal. The estimated information is then used with knowledge about the propagation channel to model the samples of the digital signal. The modeled samples are compared with actual samples of the digital signal to deduce phase errors in the digital signal. The phase errors are then used to deduce a frequency error in the digital signal that can be used to correct the samples of the digital signal and to correct the down-conversion process.

摘要翻译： 通过传播信道接收通信信号，频率下变频，然后转换为数字信号。 对数字信号的采样进行处理，以估计通信信号传送的信息。 然后将估计的信息用于关于传播信道的知识以对数字信号的采样进行建模。 将建模样本与数字信号的实际采样进行比较，以推断数字信号中的相位误差。 然后使用相位误差来推导数字信号中的频率误差，该频率误差可用于校正数字信号的采样并纠正下变频过程。

公开(公告)号：US20090185644A1

公开(公告)日：2009-07-23

申请号：US12374719

申请日：2007-07-25

申请人： Cyril Valadon ,  Carlo Pachetti

发明人： Cyril Valadon ,  Carlo Pachetti

IPC分类号： H04L27/06

CPC分类号： H04L25/067 ,  H03M13/45 ,  H04B1/707 ,  H04L1/0054 ,  H04L1/1819 ,  H04L1/1845 ,  H04L1/1893

摘要： A method of producing soft decisions for a signal, wherein a model provides an expression for an LLR for the signal, the LLR expression is dependent on noise power in the signal and can be rendered in a form independent of the noise power, wherein the method comprises evaluating the noise power independent expression using values from the signal to produce soft decisions, calculating a weight expressing the noise power affecting a soft decision relative to the noise power affecting at least one other soft decision and applying the weight to its respective soft decision.

摘要翻译： 一种产生信号的软判决的方法，其中模型为信号提供LLR的表达式，LLR表达式取决于信号中的噪声功率，并且可以以与噪声功率无关的形式呈现，其中该方法 使用来自信号的值来评估噪声功率无关表达，以产生软判决，计算表示相对于影响至少一个其他软判决的噪声功率的软判决的噪声功率的权重，并将该权重应用于其相应的软判决。

公开(公告)号：US20070297372A1

公开(公告)日：2007-12-27

申请号：US11659600

申请日：2005-08-05

申请人： Navid Fatemi-Ghomi ,  Cyril Valadon

发明人： Navid Fatemi-Ghomi ,  Cyril Valadon

IPC分类号： H04B7/212

CPC分类号： H04L7/0054 ,  H04B7/2681

摘要： A telecommunications network participant, comprising means for digitising, as a series of samples, a received signal containing a succession of symbols, means for measuring time misalignment between the symbols and the samples and means for applying a fractional delay to the positions of the samples to reduce the misalignment.

摘要翻译： 一种电信网络参与者，包括用于数字化作为一系列样本的包含一系列符号的接收信号的装置，用于测量符号和样本之间的时间不对准的装置，以及用于将样本的位置应用分数延迟的装置 减少不对准。

公开(公告)号：US20070233890A1

公开(公告)日：2007-10-04

申请号：US11568799

申请日：2005-05-13

申请人： Cyril Valadon

发明人： Cyril Valadon

IPC分类号： G06F15/16

CPC分类号： H03M13/2792 ,  H03M13/2714 ,  H03M13/2796 ,  H04L1/0071

摘要： A method and processor for recovering a plurality of individual data streams from a composite data stream The composite data stream having been formed by first bit reordering the individual data streams with respect to themselves, combining the individual data streams and second bit reordering the combined individual data streams to form the composite data stream. The processor is arranged to for a current bit position in the composite data stream perform the steps of: (a) applying an inverse of the second bit reordering; (b) identifying to which individual data stream the current bit belongs; (c) storing the current bit in a memory space allocated to the identified individual data stream wherein the current bit is positioned within the memory space according to the first bit reordering; and performing steps (a) to (c) for each bit position in the composite data stream.

摘要翻译： 一种用于从复合数据流中恢复多个单独数据流的方法和处理器。已经通过第一比特对各个数据流相对于其自身进行重新排序形成的组合数据流，组合各个数据流以及重新排序组合的各个数据的第二位 流以形成复合数据流。 处理器被布置成用于在复合数据流中的当前比特位置执行以下步骤：（a）应用第二比特重排序的倒数; （b）识别当前位属于哪个单独的数据流; （c）根据第一位重排序将当前位存储在分配给所识别的单独数据流的存储器空间中，其中当前位位于存储器空间内; 以及对于复合数据流中的每个比特位置执行步骤（a）至（c）。

公开(公告)号：US09258149B2

公开(公告)日：2016-02-09

申请号：US11662302

申请日：2005-09-09

申请人： James Chapman ,  Jason Taylor ,  Cyril Valadon

发明人： James Chapman ,  Jason Taylor ,  Cyril Valadon

IPC分类号： H03H7/30 ,  H03H7/38 ,  H04L25/02

CPC分类号： H04L25/0218

摘要： A scheme for determining which of a set of taps that can potentially be used to measure a channel impulse response should be used to estimate the channel impulse response.

摘要翻译： 应该使用用于确定潜在地可用于测量信道脉冲响应的一组抽头中的哪一个的方案来估计信道脉冲响应。

公开(公告)号：US08750359B2

公开(公告)日：2014-06-10

申请号：US13628218

申请日：2012-09-27

申请人： Abdelkader Medles ,  Cyril Valadon

发明人： Abdelkader Medles ,  Cyril Valadon

IPC分类号： H04B3/46 ,  H04B17/00 ,  H04Q1/20

CPC分类号： H04B7/0417 ,  H04B17/336 ,  H04B17/345 ,  H04B17/391 ,  H04L5/0023 ,  H04L5/006

摘要： The invention describes a method for predicting the performance of the MLD receiver in MIMO channels. The method is based on the iterative principle where the performance of the MLD decoder is derived from that of an iterative receiver architecture with similar performance. The described Iterative MIMO Effective SNR (IMES) technique maps the performance of each MIMO channel realization into a set of effective SNR values for the different streams. This set of effective SNR values can then be used to provide link adaptation feedback to the transmitter so that the most suitable transmission format can be selected according to the characteristics of the propagation channel. Alternatively, this information can be used to adapt the receiver processing to the channel conditions, thereby making it possible, for example, to reduce the receiver power consumption in good signal conditions.

摘要翻译： 本发明描述了一种用于在MIMO信道中预测MLD接收机的性能的方法。 该方法基于迭代原理，其中MLD解码器的性能源自具有相似性能的迭代接收机架构的性能。 所描述的迭代MIMO有效SNR（IMES）技术将每个MIMO信道实现的性能映射到不同流的一组有效SNR值。 然后可以将这组有效SNR值用于向发射机提供链路自适应反馈，使得可以根据传播信道的特性来选择最合适的传输格式。 或者，该信息可以用于使接收机处理适应信道条件，从而使得例如在良好的信号条件下减少接收机功率消耗成为可能。

公开(公告)号：US20140072022A1

公开(公告)日：2014-03-13

申请号：US13628218

申请日：2012-09-27

申请人： Abdelkader Medles ,  Cyril Valadon

发明人： Abdelkader Medles ,  Cyril Valadon

IPC分类号： H04B17/00

CPC分类号： H04B7/0417 ,  H04B17/336 ,  H04B17/345 ,  H04B17/391 ,  H04L5/0023 ,  H04L5/006

摘要： The invention describes a method for predicting the performance of the MLD receiver in MIMO channels. The method is based on the iterative principle where the performance of the MLD decoder is derived from that of an iterative receiver architecture with similar performance. The described Iterative MIMO Effective SNR (IMES) technique maps the performance of each MIMO channel realization into a set of effective SNR values for the different streams. This set of effective SNR values can then be used to provide link adaptation feedback to the transmitter so that the most suitable transmission format can be selected according to the characteristics of the propagation channel. Alternatively, this information can be used to adapt the receiver processing to the channel conditions, thereby making it possible, for example, to reduce the receiver power consumption in good signal conditions.

摘要翻译： 本发明描述了一种用于在MIMO信道中预测MLD接收机的性能的方法。 该方法基于迭代原理，其中MLD解码器的性能源自具有相似性能的迭代接收机架构的性能。 所描述的迭代MIMO有效SNR（IMES）技术将每个MIMO信道实现的性能映射到不同流的一组有效SNR值。 然后可以将这组有效SNR值用于向发射机提供链路自适应反馈，使得可以根据传播信道的特性来选择最合适的传输格式。 或者，该信息可以用于使接收机处理适应信道条件，从而使得例如在良好的信号条件下减少接收机功率消耗成为可能。

公开(公告)号：US20130294547A1

公开(公告)日：2013-11-07

申请号：US13525768

申请日：2012-06-18

申请人： Richard A. Lane ,  Mark B. Murphy ,  Cyril Valadon

发明人： Richard A. Lane ,  Mark B. Murphy ,  Cyril Valadon

IPC分类号： H04L27/28

CPC分类号： H04L1/0052 ,  H04L1/0036 ,  H04L5/0053 ,  H04L5/0094 ,  H04L27/2647

摘要： Techniques are provided for a demodulation and decoding method and apparatus for a given user equipment device to receive a one or more Orthogonal Frequency Division Multiplex (OFDM) symbols over a control channel, where the OFDM symbols comprise a plurality of resource element groups distributed in time and frequency that are combined to form control channel elements. Those resource element groups that form specific control channel elements for the user equipment device and those resource element groups that form common control channel elements for one or more user equipment devices including the given user equipment device are identified. The resource element groups that form the specific control channel elements and the resource element groups that form the common control channel elements are demodulated to generate encoded control messages comprising one or more control channel elements.

摘要翻译： 提供了用于给定用户设备设备在控制信道上接收一个或多个正交频分复用（OFDM）符号的解调和解码方法和装置的技术，其中OFDM符号包括分布在时间上的多个资源元素组 和组合以形成控制信道元素的频率。 识别形成用户设备设备的特定控制信道元素的那些资源元素组以及形成用于包括给定用户设备设备的一个或多个用户设备设备的公共控制信道元素的那些资源元素组。 形成形成公共控制信道单元的特定控制信道单元和资源单元组的资源单元组被解调，以产生包括一个或多个控制信道单元的编码控制消息。