公开(公告)号：US20070183362A1

公开(公告)日：2007-08-09

申请号：US11275938

申请日：2006-02-06

申请人： Bishwarup Mondal ,  Xiangyang Zhuang ,  Kevin Baum ,  Timothy Thomas ,  Frederick Vook

发明人： Bishwarup Mondal ,  Xiangyang Zhuang ,  Kevin Baum ,  Timothy Thomas ,  Frederick Vook

IPC分类号： H04Q7/00

CPC分类号： H04B7/0617 ,  H04B7/0452 ,  H04B7/0634 ,  H04B7/0639 ,  Y02D70/444

摘要： A method and apparatus for performing spatial-division multiple access within a communication system is provided herein. During operation, nodes will return null subspace information along with their channel subspace information. The null subspace is similar to the channel subspace except that the null subspace information directs a base station to the matrix in a predefined codebook that results in minimum power being received at the node. The null subspace for each node is taken into consideration when communicating with a particular node.

摘要翻译： 本文提供了一种在通信系统内执行空分多址的方法和装置。 在运行期间，节点将返回空子空间信息及其信道子空间信息。 空子空间类似于信道子空间，除了空子信息将基站指向预定码本中的矩阵，导致节点接收的最小功率。 当与特定节点进行通信时，将考虑每个节点的空子空间。

公开(公告)号：US20100103810A1

公开(公告)日：2010-04-29

申请号：US12256528

申请日：2008-10-23

申请人： Michael N. Kloos ,  Frederick W. Vook ,  Xiangyang Zhuang

发明人： Michael N. Kloos ,  Frederick W. Vook ,  Xiangyang Zhuang

IPC分类号： H04J9/00 ,  H04K1/10 ,  H04W4/00

CPC分类号： H04W72/085 ,  H04B7/0417 ,  H04B7/0634 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/0026 ,  H04L1/06 ,  H04L1/20 ,  H04L5/0023 ,  H04L5/0053 ,  H04W72/0413

摘要： A base station and method for selecting a modulation coding scheme (MCS) in an OFDM communication system, includes a first step 500 of estimating the channel response on each antenna based on the uplink feedback. A next step 502 includes calculating transmit weights from the uplink feedback. A next step 504 includes computing a beamformed Carrier-to-Interference plus Noise Ratio based on a broadcast Carrier-to-Interference plus Noise Ratio and the transmit weights and the channel response. A next step 506 includes choosing a best modulation coding scheme for a beamform allocation using the beamformed CINR. A best antenna gain and frequency band can also be chosen using the beamformed CINR.

摘要翻译： 一种用于在OFDM通信系统中选择调制编码方案（MCS）的基站和方法，包括：基于上行链路反馈估计每个天线的信道响应的第一步骤500。 下一步骤502包括从上行链路反馈计算发射权重。 下一步骤504包括基于广播载波干扰加噪声比和发射权重和信道响应来计算波束形成的载波干扰加噪声比。 下一步骤506包括使用波束形成的CINR为波束形状分配选择最佳调制编码方案。 也可以使用波束形成的CINR来选择最佳的天线增益和频带。

公开(公告)号：US08638871B2

公开(公告)日：2014-01-28

申请号：US12340857

申请日：2008-12-22

申请人： Thomas P. Krauss ,  Frederick W. Vook ,  Xiangyang Zhuang

发明人： Thomas P. Krauss ,  Frederick W. Vook ,  Xiangyang Zhuang

IPC分类号： H04B7/02

CPC分类号： H04B7/0413 ,  H04B7/0617 ,  H04B7/10 ,  H04B17/21

摘要： Specifically, a method and system that performs MIMO and beamforming at a base station based on an uplink channel sounding (ULCS) from only one of the mobile station antennas and closed-loop multiple input, multiple output (MIMO) schemes based on the singular value decomposition (SVD) of the channel matrix. The ULCS is limited to sounding and the channel uses fewer than an optimal number of transmit antennas (e.g. one for WiMAX). The base station arrays may be configured for a full array transmitting mode or a sub-array transmitting mode.

摘要翻译： 具体地说，一种基于仅从移动台天线和闭环多路输入，基于奇异值的多输出（MIMO）方案中的上行链路信道探测（ULCS）在基站执行MIMO和波束成形的方法和系统 信道矩阵的分解（SVD）。 ULCS仅限于探测，并且该信道使用少于最佳数量的发射天线（例如一个用于WiMAX）。 基站阵列可以被配置为全阵列发送模式或子阵列发送模式。

公开(公告)号：US08130847B2

公开(公告)日：2012-03-06

申请号：US11937501

申请日：2007-11-09

申请人： Frederick W. Vook ,  Thomas P. Krauss ,  Krishna Kamal Sayana ,  Fan Wang ,  Xiangyang Zhuang

发明人： Frederick W. Vook ,  Thomas P. Krauss ,  Krishna Kamal Sayana ,  Fan Wang ,  Xiangyang Zhuang

IPC分类号： H04L27/28

CPC分类号： H04L5/0053 ,  H04B7/0689 ,  H04L1/0026 ,  H04L5/0023

摘要： An orthogonal frequency division multiplexing wireless communication terminal, that communicates with a base unit, obtains a set of analog coefficients by transforming a transmit spatial covariance matrix, modulates the set of analog coefficients onto multiple channels to form a feedback waveform, and transmits the feedback waveform to the base unit.

摘要翻译： 与基本单元进行通信的正交频分复用无线通信终端通过变换发送空间协方差矩阵来获得一组模拟系数，将该组模拟系数调制到多个通道上以形成反馈波形，并且发送反馈波形 到基地单位。

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：US07139328B2

公开(公告)日：2006-11-21

申请号：US11209309

申请日：2005-08-23

申请人： Timothy A. Thomas ,  Xiangyang Zhuang

发明人： Timothy A. Thomas ,  Xiangyang Zhuang

IPC分类号： H04L27/04

CPC分类号： H04B7/061 ,  H04B7/0426 ,  H04B7/063 ,  H04B7/0634 ,  H04B7/0639 ,  H04B7/0643 ,  H04B7/066 ,  H04B7/0691 ,  H04L1/0675 ,  H04L5/0023 ,  H04L5/0044 ,  H04L5/0051 ,  H04L5/006 ,  H04L25/0204 ,  H04L25/021 ,  H04L25/023 ,  H04L25/0238 ,  H04L25/0242 ,  H04L25/03343 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04L2025/03802 ,  Y02D70/146 ,  Y02D70/444

摘要： A method for communicating a plurality of data streams between a transmitting device with multiple transmit antennas and a receiving device, is disclosed. The method comprises determining a set of power weightings, efficiently quantizing the power weightings, and providing the set of power weightings the transmitting device. Another aspect of the invention comprises the transmitter implicitly signaling the number of data streams which the receiver should feedback information for through the amount of feedback requested. An additional aspect of the invention is a means of determining the best codebook weights by combining the maximum power and maximum capacity criteria.

摘要翻译： 公开了一种在具有多个发射天线的发射装置与接收装置之间传送多个数据流的方法。 该方法包括确定一组功率加权，有效量化功率加权，以及提供发送设备的功率权重集合。 本发明的另一方面包括发射机隐含地发送数据流的数量，接收机应该通过所请求的反馈量来反馈信息。 本发明的另一方面是通过组合最大功率和最大容量标准来确定最佳码本权重的手段。

公开(公告)号：US08934417B2

公开(公告)日：2015-01-13

申请号：US12405046

申请日：2009-03-16

申请人： Ravikiran Nory ,  Ravi Kuchibhotla ,  Robert T. Love ,  Vijay Nangia ,  Ajit Nimbalker ,  Kenneth A. Stewart ,  Xiangyang Zhuang

发明人： Ravikiran Nory ,  Ravi Kuchibhotla ,  Robert T. Love ,  Vijay Nangia ,  Ajit Nimbalker ,  Kenneth A. Stewart ,  Xiangyang Zhuang

IPC分类号： H04W4/00 ,  H04J3/00 ,  H04W72/12 ,  H04W72/04

CPC分类号： H04W72/1289 ,  H04W72/042

摘要： A wireless communication terminal including a controller coupled to a transceiver, configured to receive a first and second control messages on an anchor carrier is disclosed. The first control message includes a resource assignment for the anchor carrier and the second control message is associated with a set of component carriers that are distinct from the anchor carrier. The controller determines a resource assignment for at least one component carrier in the set of component carriers using both the first and the second control messages.

摘要翻译： 公开了一种无线通信终端，包括耦合到收发器的控制器，被配置为在锚定载波上接收第一和第二控制消息。 第一控制消息包括用于锚定载波的资源分配，并且第二控制消息与不同于锚定载波的一组分量载波相关联。 控制器使用第一和第二控制消息来确定分组载波集合中的至少一个分量载波的资源分配。

公开(公告)号：US08902830B2

公开(公告)日：2014-12-02

申请号：US12979846

申请日：2010-12-28

申请人： Ajit Nimbalker ,  Ravi Kuchibhotla ,  Robert T. Love ,  Vijay Nangia ,  Ravikiran Nory ,  Xiangyang Zhuang

发明人： Ajit Nimbalker ,  Ravi Kuchibhotla ,  Robert T. Love ,  Vijay Nangia ,  Ravikiran Nory ,  Xiangyang Zhuang

IPC分类号： H04W72/04 ,  H04W52/02 ,  H04W48/10 ,  H04W74/08

CPC分类号： H04W52/0206 ,  H04W48/10 ,  H04W74/0833 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/146 ,  Y02D70/25

摘要： A wireless communication user terminal obtains uplink access configuration information on a physical downlink control channel (PDCCH) addressed to a plurality of user terminals by processing the PDCCH based on a first system information received from a base station on a physical broadcast channel (PBCH) and based on synchronization information. The terminal sends a signature waveform based on the uplink access configuration information, prior to receiving system information in addition to the first system information, whereby the signature waveform enables the base station to transition from a relatively low power operating mode to a relatively high power operating mode.

摘要翻译： 无线通信用户终端基于在物理广播信道（PBCH）上从基站接收到的第一系统信息，通过处理PDCCH来获得寻址到多个用户终端的物理下行链路控制信道（PDCCH）上的上行接入配置信息，以及 基于同步信息。 除了第一系统信息之外，终端在接收系统信息之前，基于上行接入配置信息发送签名波形，由此签名波形使得基站能够从相对低功率的操作模式转换到较高功率的操作 模式。

公开(公告)号：US08396047B2

公开(公告)日：2013-03-12

申请号：US13040109

申请日：2011-03-03

申请人： Sandeep H. Krishnamurthy ,  Robert T. Love ,  Ajit Nimbalker ,  Kenneth A. Stewart ,  Xiangyang Zhuang

发明人： Sandeep H. Krishnamurthy ,  Robert T. Love ,  Ajit Nimbalker ,  Kenneth A. Stewart ,  Xiangyang Zhuang

IPC分类号： H04W40/00

CPC分类号： H04L5/0053 ,  H04L5/0007 ,  H04L5/0091

摘要： A wireless communication device receives at least a section of a subframe from a base station in a wireless communication system. The subframe includes transmission resources multiplexed onto subcarriers of orthogonal frequency division multiplexed (OFDM) symbols. A first set of OFDM symbols includes a reference signal and at least a second set of OFDM symbols includes information other than the reference signal (e.g., channel-coded data). The wireless device determines which OFDM symbols of the subframe constitute the first set of OFDM symbols based on an identifier associated with a base station that transmitted the subframe. The wireless device may then process the reference signal from the OFDM symbols that are determined to be the first set of OFDM symbols. The wireless device may also determine which OFDM symbols of the subframe constitute the second set of OFDM symbols and process non-reference signal information from OFDM symbols of the second set.

摘要翻译： 无线通信设备从无线通信系统中的基站接收子帧的至少一部分。 子帧包括复用到正交频分复用（OFDM）符号的子载波上的传输资源。 第一组OFDM符号包括参考信号，并且至少第二组OFDM符号包括除参考信号之外的信息（例如，信道编码数据）。 无线设备基于与发送子帧的基站相关联的标识符来确定子帧的哪些OFDM符号构成第一组OFDM符号。 无线设备然后可以处理来自被确定为第一组OFDM符号的OFDM符号的参考信号。 无线设备还可以确定子帧的哪些OFDM符号构成第二组OFDM符号，并且从第二组的OFDM符号处理非参考信号信息。

公开(公告)号：US20120327980A1

公开(公告)日：2012-12-27

申请号：US13495516

申请日：2012-06-13

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

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

IPC分类号： H04B1/38 ,  H04L27/06

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 wireless communication terminal including a transceiver coupled to a processor and corresponding methods are disclosed. The processor is configured to determine resource elements that carry data intended for the terminal from a set of allocated resource elements that carry data intended for the terminal excluding at least resource elements associated with a first set of one or more resource elements of a particular type that are shifted relative to a known reference signal pattern. The processor is also configured to decode the resource elements that carry the data intended for the terminal based on the resource elements that carry the data intended for the terminal.

摘要翻译： 公开了一种包括耦合到处理器的收发器和相应方法的无线通信终端。 处理器被配置为确定承载来自一组分配的资源元素的资源元素的资源元素，所述资源元素携带旨在用于终端的数据至少排除与特定类型的一个或多个资源元素的第一集合相关联的资源元素， 相对于已知的参考信号图案移位。 处理器还被配置为基于承载用于终端的数据的资源元素来解码承载用于终端的数据的资源元素。