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1. 发明授权

US08897384B2 Wireless feedback system and method 有权
标题翻译：无线反馈系统及方法
公开(公告)号：US08897384B2
公开(公告)日：2014-11-25
申请号：US14072779
申请日：2013-11-05
申请人： Apple Inc.
发明人： Wen Tong , Hosein Nikopourdeilami, IV , Amir Keyvam Khandani , Hua Xu , Ming Jia , Peiying Zhu , Dong-Sheng Yu
IPC分类号： H04B7/02 , H04B7/06 , H04B7/04 , H04L29/06
CPC分类号： H04B7/0478 , H04B7/0417 , H04B7/0456 , H04B7/0634 , H04B7/0639 , H04L69/04 , H04L69/14
摘要： A codebook C is provided in a MIMO transmitter as well as a MIMO receiver. The codebook C will include M codewords ci, where i is a unique codeword index for each codeword ci. Each codeword defines weighting factors to apply to the MIMO signals, and may correspond to channel matrices or vectors to apply to the MIMO signals prior to transmission from the respective antennas of the MIMO transmitter. The present invention creates codeword subsets Si for each codeword ci of the codebook C. Each codeword subset Si defines L codewords cj, which are selected from all the codewords ci in the codebook C. The codewords cj in a codeword subset Si are the L codewords in the entire codebook that best correlate with the corresponding codeword ci.
摘要翻译：码本C被提供在MIMO发射机以及MIMO接收机中。码本C将包括M个码字ci，其中i是每个码字ci的唯一码字索引。每个码字定义了应用于MIMO信号的加权因子，并且可以对应于在从MIMO发射机的各个天线发送之前应用于MIMO信号的信道矩阵或向量。本发明为码本C的每个码字ci创建码字子集Si。每个码字子集Si定义了从码本C中的所有码字ci中选择的L个码字cj。码字子集Si中的码字cj是L个码字在整个码本中与相应的码字ci最相关。

2. 发明授权

US08837631B2 Adaptive two-dimensional channel interpolation 有权
标题翻译：自适应二维信道插值
公开(公告)号：US08837631B2
公开(公告)日：2014-09-16
申请号：US14088531
申请日：2013-11-25
申请人： Apple Inc.
发明人： Jianglei Ma , Ming Jia , Hua Xu , Wen Tong , Peiying Zhu , Dong-Sheng Yu , Hang Zhang
IPC分类号： H04L27/00
CPC分类号： H04L27/2611 , H04B7/06 , H04B7/08 , H04L5/0007 , H04L5/0023 , H04L25/0226 , H04L25/0232 , H04L27/2626 , H04L27/2647
摘要： A method and apparatus for improving channel estimation within an OFDM communication system. Channel estimation in OFDM is usually performed with the aid of pilot symbols. The pilot symbols are typically spaced in time and frequency. The set of frequencies and times at which pilot symbols are inserted is referred to as a pilot pattern. In some cases, the pilot pattern is a diagonal-shaped lattice, either regular or irregular. The method first interpolates in the direction of larger coherence (time or frequency). Using these measurements, the density of pilot symbols in the direction of faster change will be increased thereby improving channel estimation without increasing overhead. As such, the results of the first interpolating step can then be used to assist the interpolation in the dimension of smaller coherence (time or frequency).
摘要翻译：一种用于改善OFDM通信系统内的信道估计的方法和装置。 OFDM中的信道估计通常借助于导频符号来执行。导频符号通常在时间和频率上间隔开。将导频符号插入的频率和时间的集合称为导频模式。在一些情况下，导频图案是对角线形格子，规则的或不规则的。该方法首先在较大相干性（时间或频率）的方向内插。使用这些测量，导频符号在更快变化方向上的密度将增加，从而改善信道估计而不增加开销。因此，第一内插步骤的结果然后可以用于辅助尺寸较小的相干性（时间或频率）的内插。

3. 发明授权

US08774120B2 Techniques for improving control channel acquisition in a wireless communication system 有权
标题翻译：用于改善无线通信系统中控制信道获取的技术
公开(公告)号：US08774120B2
公开(公告)日：2014-07-08
申请号：US13730356
申请日：2012-12-28
申请人： Apple Inc.
发明人： Ning Chen , Leo Dehner , James W. McCoy
IPC分类号： H04W28/04
CPC分类号： H04W72/0406 , H04W48/16
摘要： A technique of operating a wireless communication system includes determining respective geometries of multiple subscriber stations, which include a first subscriber station and a second subscriber station, with respect to a serving base station. Respective control channels, which include a first control channel associated with the first subscriber station and a second control channel associated with the second subscriber station, for the multiple subscriber stations are then scheduled based on the respective geometries. The first control channel is scheduled to be encountered earlier in a control channel search procedure, of the one or more control channel symbols, than the second control channel. The first subscriber station has a lower geometry than the second subscriber station.
摘要翻译：操作无线通信系统的技术包括相对于服务基站确定包括第一用户站和第二用户站的多个用户站的相应几何。然后基于各自的几何结构来调度与多个用户站相关的包括与第一用户站相关联的第一控制信道和与第二用户站相关联的第二控制信道的各个控制信道。第一控制信道被调度为比第二控制信道更早地在一个或多个控制信道符号的控制信道搜索过程中遇到。第一用户站具有比第二用户站更低的几何形状。

4. 发明授权

US08724445B2 Method and system for combining OFDM and transformed OFDM 有权
标题翻译：用于组合OFDM和变换OFDM的方法和系统
公开(公告)号：US08724445B2
公开(公告)日：2014-05-13
申请号：US13047291
申请日：2011-03-14
申请人： Jianglei Ma , Wen Tong , Ming Jia , Hua Xu , Peiying Zhu , Hang Zhang
发明人： Jianglei Ma , Wen Tong , Ming Jia , Hua Xu , Peiying Zhu , Hang Zhang
IPC分类号： H04J9/00
CPC分类号： H04L27/263 , H04L1/0003 , H04L1/0009 , H04L5/0007 , H04L5/0023 , H04L5/0044 , H04L5/0096 , H04L27/2613 , H04L27/2628 , H04L27/2634 , H04L27/2646
摘要： Methods and systems are provided that enable an OFDM transmitter to be used for transmitting conventional OFDM or a form of transformed OFDM. A technique is provided for transforming a coded and modulated sequence of samples prior to an IFFT that enables the transformed sequence of samples to be transmitted using conventional OFDM or transformed OFDM. The selection of a transform function for transforming the coded and modulated sequence of samples may be based on optimizing the transform function for particular operating conditions between the transmitter and receiver. In some embodiments of the invention OFDM and time transformed OFDM are multiplexed in time and/or frequency in a transmission frame. In some embodiments of the invention a pilot pattern is provided in which the pilot are sent using OFDM and data is sent using OFDM and/or transformed OFDM.
摘要翻译：提供了使OFDM发射机能够用于传输常规OFDM或变换OFDM形式的方法和系统。提供了一种用于在IFFT之前变换样本的编码和调制序列的技术，其使得能够使用常规OFDM或变换OFDM来发送变换的样本序列。用于变换样本的编码和调制序列的变换函数的选择可以基于优化发射机和接收机之间的特定操作条件的变换函数。在本发明的一些实施例中，OFDM和时变OFDM在传输帧中以时间和/或频率被复用。在本发明的一些实施例中，提供了导频模式，其中使用OFDM发送导频，并且使用OFDM和/或经变换的OFDM发送数据。

5. 发明授权

US08719654B2 Method for efficient control signaling of two codeword to one codeword transmission 有权
标题翻译：用于将两个码字有效地控制到一个码字传输的方法
公开(公告)号：US08719654B2
公开(公告)日：2014-05-06
申请号：US13584686
申请日：2012-08-13
申请人： Jayesh H. Kotecha , Ian C. Wang , Ning Chen
发明人： Jayesh H. Kotecha , Ian C. Wang , Ning Chen
IPC分类号： H04L1/18
CPC分类号： H04B7/0413 , H04L1/1812 , H04L1/1896
摘要： In a wireless communication system, a compact control signaling scheme includes signaling a selected retransmission mode and codeword identifier for a codeword retransmission when one of a plurality of codewords being transmitted over two codeword pipes to a receiver fails the transmission and when the transmitter switches from a higher order channel rank to a lower order channel rank, either by including one or more additional signaling bits in the control signal to identify the retransmitted codeword, or by re-using existing control signal information in a way that can be recognized by the receiver to identify the retransmitted codeword. With the compact control signal, the receiver is able to determine which codeword is being retransmitted and to determine the corresponding time-frequency resource allocation for the retransmitted codeword.
摘要翻译：在无线通信系统中，紧凑的控制信令方案包括：当多个码字中的一个码字在两个码字管道上传输到接收机时，信号通知所选择的重发模式和用于码字重传的码字标识符，并且当发射机从通过在控制信号中包括一个或多个附加信令位来识别重传的码字，或者通过以可被接收器识别的方式重新使用现有的控制信号信息识别重传的码字。利用紧凑的控制信号，接收机能够确定哪个码字正被重传并且确定重传的码字的对应的时间 - 频率资源分配。

6. 发明授权

US08630333B2 Beamforming for non-collaborative, space division multiple access systems 有权
标题翻译：用于非协同，空分多址系统的波束成形
公开(公告)号：US08630333B2
公开(公告)日：2014-01-14
申请号：US13550478
申请日：2012-07-16
申请人： Jayesh H. Kotecha , Jayakrishnan C. Mundarath
发明人： Jayesh H. Kotecha , Jayakrishnan C. Mundarath
IPC分类号： H04L5/16 , H04B7/02
CPC分类号： H04B7/0897 , H04B7/0417 , H04B7/0452 , H04B7/0478 , H04B7/0617 , H04B7/0619 , H04B7/0632 , H04L25/0248
摘要： A wireless communication system noncollaborative, multiple input, multiple output (MIMO) space division multiple access (SDMA) system determines subscriber station combining and weighting vectors that yield a high average signal-to-interference plus noise ratio (SINR). Each subscriber station independently transmits information to a base station that allows the base station to determine a weight vector wi for each subscriber station using the determined combining vector of the subscriber station. The ith combining vector corresponds to a right singular vector corresponding to a maximum singular value of a channel matrix between a base station and the ith subscriber station. Each subscriber station transmits signals using a weight vector vi, which corresponds to a left singular vector corresponding to a maximum singular value of a channel matrix between the ith subscriber station and the base station. The base station uses the weight vector wi to determine the signal transmitted by the ith subscriber station.
摘要翻译：无线通信系统非协调多输入多输出（MIMO）空分多址（SDMA）系统确定了产生高平均信噪比加噪声比（SINR）的用户站组合和加权向量。每个用户站独立地向基站发送信息，该基站允许基站使用所确定的订户站的组合向量来确定每个用户站的权重向量w i。第i个组合向量对应于对应于基站和第i个用户站之间的信道矩阵的最大奇异值的右奇异矢量。每个用户站使用权重向量vi发送信号，权重向量vi对应于与第i个用户站和基站之间的信道矩阵的最大奇异值相对应的左奇异矢量。基站使用权重向量wi来确定由第i个用户台发送的信号。

7. 发明授权

US08441918B2 System access and synchronization methods for MIMO OFDM communications systems and physical layer packet and preamble design 有权
公开(公告)号：US08441918B2
公开(公告)日：2013-05-14
申请号：US13204238
申请日：2011-08-05
申请人： Jianglei Ma , Ming Jia , Peiying Zhu , Wen Tong
发明人： Jianglei Ma , Ming Jia , Peiying Zhu , Wen Tong
IPC分类号： H04J11/00
CPC分类号： H04W36/08 , H04B7/022 , H04B7/04 , H04B7/0413 , H04B7/0667 , H04B7/0697 , H04J11/0069 , H04L5/0023 , H04L5/0037 , H04L5/0048 , H04L7/0008 , H04L27/2602 , H04L27/2607 , H04L27/2613 , H04L27/2627 , H04L27/2628 , H04L27/2663 , H04L27/2665 , H04L27/2672 , H04L27/2675
摘要： A method and apparatus are provided for performing acquisition, synchronization and cell selection within an MIMO-OFDM communication system. A coarse synchronization is performed to determine a searching window. A fine synchronization is then performed by measuring correlations between subsets of signal samples, whose first signal sample lies within the searching window, and known values. The correlations are performed in the frequency domain of the received signal. In a multiple-output OFDM system, each antenna of the OFDM transmitter has a unique known value. The known value is transmitted as pairs of consecutive pilot symbols, each pair of pilot symbols being transmitted at the same subset of sub-carrier frequencies within the OFDM frame.

8. 发明授权

US08934498B2 Techniques for reducing communication errors in a wireless communication system 有权
标题翻译：用于减少无线通信系统中的通信错误的技术
公开(公告)号：US08934498B2
公开(公告)日：2015-01-13
申请号：US13136470
申请日：2011-08-01
申请人： Jayesh Kotecha
发明人： Jayesh Kotecha
IPC分类号： H04L12/28 , H04W72/04 , H04L1/00 , H04W28/04 , H04L1/16 , H04L1/18
CPC分类号： H04L5/0057 , H04L1/0026 , H04L1/0027 , H04L1/0031 , H04L1/1671 , H04L1/1896 , H04L5/0053 , H04W28/04 , H04W72/0406 , H04W72/0413 , H04W72/042 , H04W72/08 , H04W72/1284 , H04W72/14
摘要： A technique for operating a wireless communication device includes transmitting a scheduling request from the wireless communication device and receiving, following the scheduling request, an uplink grant that assigns an uplink channel to the wireless communication device. A time period between the scheduling request and the uplink grant is determined. Only channel quality information is transmitted in the uplink channel when the uplink grant requests the channel quality information and the time period is less than a predetermined time period.
摘要翻译：一种用于操作无线通信设备的技术包括从无线通信设备发送调度请求，并且在调度请求之后接收向无线通信设备分配上行链路信道的上行链路许可。确定调度请求和上行链路授权之间的时间段。当上行链路授权请求信道质量信息并且时间段小于预定时间段时，仅在上行链路信道中发送信道质量信息。

9. 发明授权

US08909159B2 Channel rank feedback in multiple-input multiple-output communication systems 有权
标题翻译：多输入多输出通信系统中的信道秩反馈
公开(公告)号：US08909159B2
公开(公告)日：2014-12-09
申请号：US13657687
申请日：2012-10-22
申请人： Apple Inc.
发明人： Jayesh H. Kotecha , James W. McCoy
IPC分类号： H04B1/00 , H04B7/00 , H04B7/04 , H04B7/06 , H04L1/16 , H04L25/02 , H04W72/04 , H04W52/42 , H04L25/03 , H04W24/10 , H04W48/08
CPC分类号： H04B7/0417 , H04B7/0408 , H04B7/0413 , H04B7/0486 , H04B7/063 , H04B7/0636 , H04B7/0647 , H04L1/1671 , H04L25/0204 , H04L25/0228 , H04L25/0242 , H04L25/03343 , H04L2025/03414 , H04L2025/03426 , H04W24/10 , H04W48/08 , H04W52/42 , H04W72/0413
摘要： Embodiments of a system and methodology are disclosed for aperiodic (i.e., non-periodic) feedback of channel-side information, such as channel rank information, to a base station by having the receiver/UE initiate the feedback instead of using a scheduled feedback approach. The autonomous feedback of channel-side information may use one of several different types of physical channel structures for uplink scheduling requests, such as those being discussed for inclusion in the emerging LTE platform standard.
摘要翻译：公开了一种系统和方法的实施例，用于通过使接收机/ UE发起反馈而不是使用调度的反馈方法来向基站进行信道侧信息（例如，信道秩信息）的非周期性（即非周期性）反馈。信道侧信息的自主反馈可以使用用于上行链路调度请求的几种不同类型的物理信道结构中的一种，例如被讨论为包括在新兴LTE平台标准中的那些。

10. 发明授权

US08902998B2 Receiver for near-field chip-to-chip multichannel transmission 有权
标题翻译：接收机用于近场芯片到芯片多通道传输
公开(公告)号：US08902998B2
公开(公告)日：2014-12-02
申请号：US13807941
申请日：2011-05-24
申请人： Frederic Broyde , Evelyne Clavelier
发明人： Frederic Broyde , Evelyne Clavelier
IPC分类号： H04L27/00 , H04B5/00 , H04B5/02
CPC分类号： H04B5/0087 , H04B5/0025 , H04B5/0056 , H04B5/02
摘要： The invention relates to a receiver for a near-field chip-to-chip multichannel transmission system such as the capacitive or inductive links used for vertical signal transmission between the stacked chips of a system-in-package. A receiver for near-field chip-to-chip multichannel transmission providing 4 transmission channels for digital transmission between two monolithic integrated circuits comprises 4 coupling devices (211) (212) (213) (214), each of said coupling devices being a planar winding sensitive to magnetic field variations. A multiple-input-port and multiple-output-port amplifier (23) has 4 input ports, each of said input ports being connected to one and only one of said coupling devices (211) (212) (213) (214). The receiver also comprises 4 recovery circuits (281) (282) (283) (284), each of said recovery circuits having an input port connected to one of the output ports of the multiple-input-port and multiple-output-port amplifier (23), each of said recovery circuits having an output terminal connected to the user (29). The receiver of the invention reduces crosstalk between the transmission channels.
摘要翻译：本发明涉及用于近场芯片到芯片多通道传输系统的接收机，例如用于在系统级封装的堆叠芯片之间的垂直信号传输的电容或感应链路。一种用于近场芯片到芯片多通道传输的接收机，其提供用于两个单片集成电路之间的数字传输的4个传输通道，包括4个耦合器件（211）（212）（213）（214），每个所述耦合器件是平面缠绕对磁场变化敏感。多输入端口和多输出端口放大器（23）具有4个输入端口，每个所述输入端口连接到所述耦合器件（211）（212）（213）中的一个且仅一个。接收机还包括4个恢复电路（281）（282）（283）（284），每个所述恢复电路具有连接到多输入端口和多输出端口放大器的输出端口之一的输入端口（23），每个所述恢复电路具有连接到用户（29）的输出端。本发明的接收机减少了传输信道之间的串扰。

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