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    • 1. 发明授权
    • Reducing interference in wireless time division duplex systems by monitoring and limiting timing advance
    • 通过监视和限制定时提前来减少无线时分双工系统的干扰
    • US09363779B2
    • 2016-06-07
    • US13230348
    • 2011-09-12
    • Francesc BoixaderaCraig E. BurnetCyril Valadon
    • Francesc BoixaderaCraig E. BurnetCyril Valadon
    • H04W72/04H04B7/005H04W76/06H04W56/00H04W36/08
    • H04W56/0045H04W36/08H04W76/30
    • 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.
    • 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。
    • 2. 发明申请
    • User Equipment and Method for Radio Link Monitoring
    • 无线电链路监控的用户设备和方法
    • US20130308472A1
    • 2013-11-21
    • US13542050
    • 2012-07-05
    • Abdelkader MedlesCyril Valadon
    • Abdelkader MedlesCyril Valadon
    • H04W24/00
    • H04L25/0232H04B17/309H04B17/327H04B17/336H04B17/345H04L5/0005
    • 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.
    • 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。
    • 6. 发明申请
    • Data Stream Recovery
    • 数据流恢复
    • US20070233890A1
    • 2007-10-04
    • US11568799
    • 2005-05-13
    • Cyril Valadon
    • Cyril Valadon
    • G06F15/16
    • H03M13/2792H03M13/2714H03M13/2796H04L1/0071
    • 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.
    • 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)。
    • 8. 发明授权
    • Apparatus for MIMO channel performance prediction
    • MIMO信道性能预测装置
    • US08750359B2
    • 2014-06-10
    • US13628218
    • 2012-09-27
    • Abdelkader MedlesCyril Valadon
    • Abdelkader MedlesCyril Valadon
    • H04B3/46H04B17/00H04Q1/20
    • H04B7/0417H04B17/336H04B17/345H04B17/391H04L5/0023H04L5/006
    • 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.
    • 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。
    • 9. 发明申请
    • APPARATUS FOR MIMO CHANNEL PERFORMANCE PREDICTION
    • MIMO信道性能预测的设备
    • US20140072022A1
    • 2014-03-13
    • US13628218
    • 2012-09-27
    • Abdelkader MedlesCyril Valadon
    • Abdelkader MedlesCyril Valadon
    • H04B17/00
    • H04B7/0417H04B17/336H04B17/345H04B17/391H04L5/0023H04L5/006
    • 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.
    • 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。
    • 10. 发明申请
    • Control Channel Demodulating and Decoding Method and Communication Apparatus Using the Same
    • 控制信道解调和解码方法及其通信装置
    • US20130294547A1
    • 2013-11-07
    • US13525768
    • 2012-06-18
    • Richard A. LaneMark B. MurphyCyril Valadon
    • Richard A. LaneMark B. MurphyCyril Valadon
    • H04L27/28
    • H04L1/0052H04L1/0036H04L5/0053H04L5/0094H04L27/2647
    • 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.
    • 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。