公开(公告)号：US20080310353A1

公开(公告)日：2008-12-18

申请号：US11764643

申请日：2007-06-18

申请人： Robert Love ,  Brian Keith Classon ,  Mark Harrison ,  Krishna Kamal Sayana ,  Kenneth Anderson Stewart ,  Xiangyang Zhuang ,  Vijay Nangia

发明人： Robert Love ,  Brian Keith Classon ,  Mark Harrison ,  Krishna Kamal Sayana ,  Kenneth Anderson Stewart ,  Xiangyang Zhuang ,  Vijay Nangia

IPC分类号： H04Q7/00

CPC分类号： H04W72/0406 ,  H04L1/0009 ,  H04L1/0025 ,  H04W72/085

摘要： A wireless communications system base station (101), upon receiving (202) from a mobile station (102) a wireless transmission that comprises a suggested transmitter-receiver configuration, can respond (in appropriate instances) by automatically transmitting (203) to the mobile station a wireless transmission comprising an indication to use instead a default transmitter-receiver configuration. By one approach, the latter action can be based, at least in part, upon a determination regarding reliability (301) of that suggested transmitter-receiver configuration (which might comprise, for example, a direct or indirect measure of quality of the channel by the default transmitter-receiver configuration was received) to provide a corresponding reliability assessment. The latter can then be used (302) to determine whether to use this suggested transmitter-receiver configuration for a subsequent communication with the mobile station.

摘要翻译： 无线通信系统基站（101）在从移动站（102）接收（202）无线传输时，包括建议的发射机 - 接收机配置，可以通过自动发送（203）到移动台（203）来响应（在适当的情况下） 驻留无线传输，其包括使用指示而不是默认发射机 - 接收机配置。 通过一种方法，后一动作可以至少部分地基于关于该建议的发射机 - 接收机配置的可靠性（301）的确定（其可以包括例如通过以下方式直接或间接测量信道的质量： 收到默认发射机 - 接收机配置），以提供相应的可靠性评估。 然后可以使用后者（302）来确定是否将该建议的发射机 - 接收机配置用于与移动台的后续通信。

公开(公告)号：US07126996B2

公开(公告)日：2006-10-24

申请号：US10035039

申请日：2001-12-28

申请人： Brian K. Classon ,  Philippe J. Sartori ,  Vijay Nangia ,  Xiangyang Zhuang ,  Kevin L. Baum

发明人： Brian K. Classon ,  Philippe J. Sartori ,  Vijay Nangia ,  Xiangyang Zhuang ,  Kevin L. Baum

IPC分类号： H04L27/28

CPC分类号： H04L1/0026 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0018 ,  H04L25/0204 ,  H04L25/0206

摘要： Mobile units in a multicarrier, multidimensional communications system can assess their own channel coherence time attributes (base stations can also access such dynamics for mobile units as well). This information is utilized (either by the mobile unit itself or by an infrastructure component such as a base site) to determine a level of trustworthiness for other channel quality data as might be measured by the mobile unit. Different modulation and coding schemes, along with responsive frequency and time diversity resource allocations, are adaptively selected as a function of this level of trustworthiness.

公开(公告)号：US20050286465A1

公开(公告)日：2005-12-29

申请号：US11070061

申请日：2005-03-02

申请人： Xiangyang Zhuang

发明人： Xiangyang Zhuang

IPC分类号： H04B7/00 ,  H04B7/216 ,  H04J11/00 ,  H04L5/02 ,  H04L27/26 ,  H04Q7/00

CPC分类号： H04L27/2613 ,  H04L5/0007 ,  H04L25/0212 ,  H04L25/022 ,  H04L25/0226 ,  H04L25/0228 ,  H04L27/2607

摘要： Access to a wireless communication system (100) by a subscriber station (101-103) is facilitated by selecting (705) an access sequence from a set of sequences that have been identified to have a low average of peak-to-average-power-ratios of access signals generated by the set of sequences and also based on a good cross-correlation of the access signals; forming (714) the access waveform by generating an access signal using the access sequence and appending in the time domain a cyclic prefix to the access signal; and transmitting (715) the access waveform. In some implementations, the access waveform is cyclically shifted (820) before the cyclic prefix is appended, and in some implementations, the signal is transmitted (710, 810) in a randomly selected sub-band of an access interval.

摘要翻译： 通过从已经被识别为具有低平均峰值平均功率的平均值的一组序列中选择（705）访问序列，便于通过订户站（101-103）访问无线通信系统（100） - 由该组序列生成的接入信号的比例，并且还基于接入信号的良好互相关; 通过使用访问序列生成访问信号并在时域中向访问信号附加循环前缀来形成（714）访问波形; 并发送（715）访问波形。 在一些实现中，在附加循环前缀之前，访问波形被循环移位（820），并且在一些实现中，在访问间隔的随机选择子带中发送（710,810）信号。

公开(公告)号：US06927728B2

公开(公告)日：2005-08-09

申请号：US10387727

申请日：2003-03-13

申请人： Frederick W. Vook ,  Timothy A. Thomas ,  Xiangyang Zhuang

发明人： Frederick W. Vook ,  Timothy A. Thomas ,  Xiangyang Zhuang

IPC分类号： H04J99/00 ,  G01S3/16 ,  G01S3/28 ,  H01Q3/00 ,  H04B20060101 ,  H04B7/02 ,  H04B7/06 ,  H04L27/26

CPC分类号： H04L25/03343 ,  H04B7/0417 ,  H04B7/0617 ,  H04B7/0634 ,  H04B7/0639 ,  H04B7/066 ,  H04L25/0204 ,  H04L25/0248 ,  H04L27/2608 ,  H04L27/2626 ,  H04L27/2647 ,  H04L2025/03802

摘要： In a multiple-input, multiple-output (MIMO) communication system, a method and apparatus for multi-antenna transmission. In accordance with the preferred embodiment of the present invention a reduced number of transmit weight matrices are fed back to the transmitter. Each transmit weight matrix is then applied to a plurality of subcarriers. Because each transmit weight matrix is applied to more than one subcarrier, the amount of weight matrixs being fed back to the transmitter is greatly reduced.

摘要翻译： 在多输入多输出（MIMO）通信系统中，用于多天线传输的方法和装置。 根据本发明的优选实施例，将减少数量的发射权重矩阵反馈给发射机。 然后将每个发射权重矩阵应用于多个子载波。 因为每个发射权重矩阵被应用于多于一个子载波，所以被反馈给发射机的权重矩阵的量大大减少。

公开(公告)号：US09450727B2

公开(公告)日：2016-09-20

申请号：US12364992

申请日：2009-02-03

申请人： Ravikiran Nory ,  Robert T Love ,  Vijay Nangia ,  Xiangyang Zhuang

发明人： Ravikiran Nory ,  Robert T Love ,  Vijay Nangia ,  Xiangyang Zhuang

IPC分类号： H04L5/00 ,  H04L1/00 ,  H04L1/06 ,  H04L1/18 ,  H04W88/12

CPC分类号： H04L5/0053 ,  H04L1/0071 ,  H04L1/06 ,  H04L1/1812 ,  H04L1/1854 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0055 ,  H04W88/12

摘要： A downlink subframe on a single downlink carrier supports physical layer acknowledgment signaling for multiple physical uplink shared channel (PUSCH) transmissions. The physical layer acknowledgement signaling may take the form of physical hybrid ARQ indicator channel (PHICH) signaling. A base unit reserves resource elements groups (REGs) for default PHICH signaling of default PUSCH transmissions. The base unit reserves control channel elements (CCEs) for physical downlink control channel (PDCCH) signaling. A CCE contains multiple interleaved REGs. The base unit takes any unreserved CCEs and maps those CCEs for physical layer acknowledgement signaling of additional PUSCH transmissions.

摘要翻译： 单个下行链路载波上的下行链路子帧支持用于多个物理上行链路共享信道（PUSCH）传输的物理层确认信令。 物理层确认信令可以采取物理混合ARQ指示符信道（PHICH）信令的形式。 基站单元为缺省PUSCH传输的默认PHICH信令保留资源单元组（REG）。 基站单元保留用于物理下行链路控制信道（PDCCH）信令的控制信道单元（CCE）。 CCE包含多个交错REG。 基站单元接收任何未保留的CCE，并映射这些CCE用于附加PUSCH传输的物理层确认信令。

公开(公告)号：US08537911B2

公开(公告)日：2013-09-17

申请号：US13031390

申请日：2011-02-21

申请人： Krishna Kamal Sayana ,  Xiangyang Zhuang

发明人： Krishna Kamal Sayana ,  Xiangyang Zhuang

IPC分类号： H04K1/10

CPC分类号： H04L5/0048 ,  H04L5/0023 ,  H04L5/0035 ,  H04L5/0094 ,  H04L25/0226

摘要： A wireless communication includes a base station that configures a set of non-zero power reference signals corresponding to multiple potential transmission points to one or more users equipment UEs and configures at least one zero-power reference signal, with zero transmission power from one or more of the multiple transmission points. The base station transmits configuration information to at least one UE of the one more UEs, wherein the configuration information corresponds to a set of resource elements that are associated with a set of channel state information reference signals and wherein the set of channel state information reference signals include the set of nonzero-power reference signals and the at least one zero-power reference signal. The UE then performs a channel measurement based on one or more non-zero-power reference signals of the set of non-zero-power reference signals and performs an interference measurement based on the at least one zero-power reference signal.

摘要翻译： 无线通信包括：基站，其将与多个潜在传输点相对应的一组非零功率参考信号配置到一个或多个用户设备UE，并且配置至少一个零功率参考信号，其中零个发射功率来自一个或多个 的多个传输点。 基站向多个UE的至少一个UE发送配置信息，其中配置信息对应于与一组信道状态信息参考信号相关联的一组资源元素，并且其中信道状态信息参考信号 包括一组非零功率参考信号和至少一个零功率参考信号。 然后，UE基于一组非零功率参考信号的一个或多个非零功率参考信号执行信道测量，并且基于至少一个零功率参考信号执行干扰测量。

公开(公告)号：US08520572B2

公开(公告)日：2013-08-27

申请号：US13093345

申请日：2011-04-25

申请人： Tyler A. Brown ,  Vijay Nangia ,  Ajit Nimbalker ,  Krishna Kamal Sayana ,  Xiangyang Zhuang

发明人： Tyler A. Brown ,  Vijay Nangia ,  Ajit Nimbalker ,  Krishna Kamal Sayana ,  Xiangyang Zhuang

IPC分类号： H04B7/00

CPC分类号： H04L5/0064 ,  H04L1/0025 ,  H04L1/0073 ,  H04L1/1671 ,  H04L5/0023 ,  H04L5/0044 ,  H04L5/0053 ,  H04L5/0092 ,  H04L25/03343 ,  H04L27/0008 ,  H04L2025/03414 ,  H04L2025/03426

摘要： The present disclosure relates to resource allocation in multi-layer transmissions in transmissions of user data and control information. A wireless terminal allocates resources in a multi-layer transmission for one more types of control information based on scheduling information and control allocation parameters. The multi-layer transmission includes control information and one or more user data streams that are mapped to multiple transmission layers and transmitted by the wireless terminal.

摘要翻译： 本公开涉及在用户数据和控制信息的传输中的多层传输中的资源分配。 无线终端基于调度信息和控制分配参数，在多层传输中为一种以上类型的控制信息分配资源。 多层传输包括映射到多个传输层并由无线终端传输的控制信息和一个或多个用户数据流。

公开(公告)号：US08406319B2

公开(公告)日：2013-03-26

申请号：US11691494

申请日：2007-03-27

申请人： Krishna Kamal Sayana ,  Bryan S. Nollett ,  Xiangyang Zhuang

发明人： Krishna Kamal Sayana ,  Bryan S. Nollett ,  Xiangyang Zhuang

IPC分类号： H04K1/10

CPC分类号： H04L27/2647 ,  H04L25/022 ,  H04L25/0228 ,  H04L25/025

摘要： A receiver with DFT based channel estimation having good noise suppression for both high and low signal-to-noise ratios providing advantages over conventional DFT estimators and Minimum-Mean-Square-Error (MMSE) estimators. The use of MMSE may be incorporated for estimation at the band edges providing further improvements. The received signal in the time domain, is transformed to the frequency-domain received signal via an N-point FFT (501). The frequency-domain received signal at the pilot locations is then used to obtain a “noisy” channel estimates at the pilot subcarriers by dividing the known pilot symbols in (503). Uniformly spaced pilots are assumed over a window of usable subcarriers. Padding is applied to the initial channel estimates at both sides of the band to account for unused subcarriers such as guard spacing. Weighting factors during power estimation may take into account various noise characteristics such as combinations of known and time-limited noise power characteristics.

摘要翻译： 具有基于DFT的信道估计的接收机对于高和低信噪比具有良好的噪声抑制，提供优于常规DFT估计器和最小均方误差（MMSE）估计器的优点。 可以并入MMSE的使用以便在带边缘进行估计，从而提供进一步的改进。 时域中的接收信号通过N点FFT被转换成频域接收信号（501）。 导频位置处的频域接收信号然后用于通过划分（503）中的已知导频符号来在导频子载波处获得噪声信道估计。 在可用子载波的窗口上假设均匀间隔的导频。 填充应用于频带两侧的初始信道估计，以解决未使用的子载波，例如保护间隔。 功率估计期间的加权因子可以考虑各种噪声特性，例如已知和时间有限的噪声功率特性的组合。

公开(公告)号：US08374197B2

公开(公告)日：2013-02-12

申请号：US13295754

申请日：2011-11-14

申请人： Krishna Kamal Sayana ,  Xiangyang Zhuang

发明人： Krishna Kamal Sayana ,  Xiangyang Zhuang

IPC分类号： H04J3/16 ,  H04W4/00 ,  H04B15/00 ,  H04B1/00 ,  H04B7/14 ,  H01Q11/12

CPC分类号： H04W72/0413 ,  H04B7/0417 ,  H04B7/0617 ,  H04L1/0003 ,  H04L1/0025 ,  H04L1/0028 ,  H04L1/0035 ,  H04L1/06 ,  H04L1/1812 ,  H04W88/02 ,  H04W88/08

摘要： A method for link adaptation at a base station using metric feedback is disclosed. The method can include the steps of communicating with a mobile station over a communication link having one or more sub-channels and during the communication, receiving from the mobile station a plurality of mutual information per coded bit metrics for a plurality of candidate modulation types per coding layer. The mutual information per coded bit metrics can be based on channel state knowledge of the sub-channels. Also, based on the received information, the operational performance of the mobile station can be predicted in view of one or more transmission parameters and performance factors and one or more of the transmission parameters, including a modulation type selected from one of the plurality of candidate modulation types per coding layer, can be selected based on a transmission condition of the communication link.

摘要翻译： 公开了一种使用度量反馈在基站上进行链路自适应的方法。 该方法可以包括以下步骤：通过具有一个或多个子信道的通信链路与移动站进行通信，并且在通信期间，从移动站接收针对多个候选调制类型的每个编码比特度量的多个互信息 编码层。 每个编码比特度量的互信息可以基于子信道的信道状态知识。 另外，基于接收到的信息，可以考虑到一个或多个传输参数和性能因素以及一个或多个传输参数来预测移动站的操作性能，所述传输参数包括从多个候选中的一个中选择的调制类型 可以基于通信链路的发送条件来选择每个编码层的调制类型。

公开(公告)号：US08208434B2

公开(公告)日：2012-06-26

申请号：US12431305

申请日：2009-04-28

申请人： Krishna Kamal Sayana ,  Tyler Brown ,  Xiangyang Zhuang

发明人： Krishna Kamal Sayana ,  Tyler Brown ,  Xiangyang Zhuang

IPC分类号： H04W4/00

CPC分类号： H04L5/0035 ,  H04B7/024 ,  H04B7/0413 ,  H04L5/0023 ,  H04L5/0032 ,  H04L5/0037 ,  H04L5/0048 ,  H04L5/006 ,  H04L5/0094 ,  H04L5/16 ,  H04L25/0204 ,  H04L25/0226 ,  H04L25/0242

摘要： A method of signaling particular types of resource elements in a wireless communication system is disclosed. The method can include, at a wireless terminal, receiving (610) a message providing information of a set of allocated resource elements carrying data intended for the wireless terminal. The method can include receiving (620) an indication corresponding to a resource element of a particular type within the set of allocated resource elements. The method can include decoding (630) resource elements that carry data intended for the wireless terminal based on the message providing information and based on the indication.

摘要翻译： 公开了一种在无线通信系统中发送特定类型的资源元素的方法。 该方法可以包括在无线终端处接收（610）提供携带针对无线终端的数据的分配的资源元素的集合的信息的消息。 该方法可以包括：在所分配的资源元素集合内接收（620）对应于特定类型的资源元素的指示。 该方法可以包括基于消息提供信息并且基于该指示来解码（630）携带针对无线终端的数据的资源元素。