公开(公告)号：US20120244898A1

公开(公告)日：2012-09-27

申请号：US13072496

申请日：2011-03-25

Applicant: Jiann-Ching Guey ,  Dennis Hui

Inventor： Jiann-Ching Guey ,  Dennis Hui

IPC: H04B7/24

CPC classification number: H04W24/02 ,  H04W16/10

Abstract: An apparatus, system, and method for dynamic, distributed coordination of parameters between a plurality of base stations in a cellular telecommunication network. An inter-cell communication interface connecting each given base station with the given base station's neighboring base stations is extended to communicate parameter settings between the given base station and the neighboring base stations. An apparatus in each given base station receives from the given base station's neighboring base stations, parameter settings being utilized by the neighboring base stations for transmitting and/or receiving in associated neighboring cells. The apparatus utilizes the parameter settings received from the neighboring base stations as factors to determine local parameter settings for the given base station. The given base station then sends the local parameter settings and supplemental information to the neighboring base stations so that optimal network-wide parameter settings can be selected.

Abstract translation: 一种用于蜂窝电信网络中的多个基站之间的参数的动态，分布式协调的装置，系统和方法。 将每个给定基站与给定基站的相邻基站连接的小区间通信接口被扩展以在给定基站和相邻基站之间传送参数设置。 每个给定基站中的装置从给定基站的相邻基站接收相邻基站利用的参数设置，用于在相关联的相邻小区中发送和/或接收。 该装置利用从相邻基站接收的参数设置作为确定给定基站的本地参数设置的因素。 然后，给定的基站将本地参数设置和补充信息发送到相邻基站，使得可以选择最佳的全网络参数设置。

公开(公告)号：US20120243468A1

公开(公告)日：2012-09-27

申请号：US13070414

申请日：2011-03-23

Applicant: Dennis Hui ,  Jung-fu Cheng ,  Jiann-Ching Guey ,  Ali S. Khayrallah ,  Shing-Wa Wong

Inventor： Dennis Hui ,  Jung-fu Cheng ,  Jiann-Ching Guey ,  Ali S. Khayrallah ,  Shing-Wa Wong

IPC: H04W4/00

CPC classification number: H04B7/024 ,  H03M7/3068 ,  H03M7/3082

Abstract: A compression/decompression method for backhaul communication of a complex-valued radio signal between base stations and the network processing unit, such as a Central Processor of a Coordinated MultiPoint (CoMP) system, significantly reduces backhaul bandwidth. The spatial and temporal correlations of the wireless IQ signal are exploited in order to remove redundancy and substantially reduce signal bandwidth. Feature component signals of significance are extracted through linear transformation to form the radio signal, and are individually quantized, possibly at different bit rates in accordance with their relative importance. The transformation can either be pre-determined or computed in real-time based on the spatial and temporal statistics of the radio signal. In the latter case, the transformation matrix or matrices are also sent over the backhaul in order to allow the radio signal to be reconstructed at the receiving end. Different methods of generating the transformation matrices are proposed.

Abstract translation: 用于基站和诸如协调多点（CoMP）系统的中央处理器的网络处理单元之间的复数无线电信号的回程通信的压缩/解压缩方法显着地减少了回程带宽。 利用无线IQ信号的空间和时间相关性来消除冗余并显着降低信号带宽。 通过线性变换提取有意义的特征分量信号以形成无线电信号，并且可以根据其相对重要性以不同的比特率单独量化。 可以基于无线电信号的空间和时间统计来实时地进行转换或者实时地进行转换。 在后一种情况下，转换矩阵或矩阵也通过回程发送，以允许在接收端重建无线电信号。 提出了生成转换矩阵的不同方法。

公开(公告)号：US20120190389A1

公开(公告)日：2012-07-26

申请号：US13010432

申请日：2011-01-20

Applicant: Dennis HUI

Inventor： Dennis HUI

IPC: H04B7/00

CPC classification number: H04B7/024 ,  H03M7/3073 ,  H03M7/3075 ,  H03M7/3082 ,  H04B7/0413 ,  H04W28/04 ,  H04W28/06 ,  H04W88/085

Abstract: The technology in this application compresses multi-antenna complex-valued signals by exploiting both a spatial and a temporal correlation of the signals to remove redundancy within the complex-valued signals and substantially reduce the capacity requirement of backhaul links. At a receiver, the compressed signal is received, and a decompressor decompresses the received signal over space and over time to reconstruct the multiple antenna stream.

Abstract translation: 该应用中的技术通过利用信号的空间和时间相关性来消除多天线复值信号，从而消除复值信号内的冗余，并大大降低了回程链路的容量需求。 在接收机处，接收压缩信号，解压缩器通过空间和时间对接收的信号进行解压缩，以重构多天线流。

公开(公告)号：US08205140B2

公开(公告)日：2012-06-19

申请号：US11746920

申请日：2007-05-10

Applicant: Abdulrauf Hafeez ,  Dayong Chen ,  Dennis Hui

Inventor： Abdulrauf Hafeez ,  Dayong Chen ,  Dennis Hui

IPC: H03M13/00

CPC classification number: H04L1/0045 ,  H03M13/3761 ,  H04B7/15521 ,  H04L1/0054 ,  H04L1/1845 ,  H04L2001/0096

Abstract: According to a method and apparatus taught herein, a network node includes a receiver circuit that determines soft values for received packets corresponding to the information bit groups associated with network coding operations, where the soft values are determined for each information bit group based on joint probabilities of the information bits within the information bit group. For example, first soft values are determined for the information bit groups in a first (received) constituent packet and second soft values are likewise determined for the information bit groups in a network-coded (received) packet that depends on the first constituent packet and a second constituent packet. Third soft values are generated for the information bit groups of the second constituent packet based on jointly evaluating the first and second soft values.

Abstract translation: 根据本文教导的方法和装置，网络节点包括接收机电路，其确定与与网络编码操作相关联的信息比特组对应的接收分组的软值，其中基于联合概率为每个信息比特组确定软值 信息位组内的信息位。 例如，为第一（接收）构成分组中的信息比特组确定第一软值，并且同样地确定依赖于第一组成分组的网络编码（接收）分组中的信息比特组的第二软值， 第二组成分组。 基于联合评估第一和第二软值，为第二组成分组的信息比特组生成第三软值。

公开(公告)号：US20120051467A1

公开(公告)日：2012-03-01

申请号：US13050697

申请日：2011-03-17

Applicant: Yi-Pin Eric WANG ,  Dennis Hui

Inventor： Yi-Pin Eric WANG ,  Dennis Hui

IPC: H04L27/00

CPC classification number: H04L25/08 ,  H04L25/03012 ,  H04L25/03159 ,  H04L25/03171 ,  H04L25/03184 ,  H04L25/03312 ,  H04L25/03331 ,  H04L2025/03414 ,  H04L2025/03426

Abstract: In one of its aspects the technology disclosed herein concerns a method of operating a receiver. The method comprises performing symbol detection by (1) receiving a frequency-domain signal that comprises contribution from time-domain symbols transmitted from one or more transmit antennas; (2) generating a transformation matrix and a triangular matrix based on a frequency domain channel response; (3) using the transformation matrix to transform the received frequency-domain signal to obtain a transformed frequency-domain signal; and (4) performing symbol detection by performing plural stages of detection, each stage of detection using elements of the transformed frequency-domain received signal associated with the detection stage.

Abstract translation: 在其中的一个方面，本文公开的技术涉及操作接收机的方法。 该方法包括：（1）接收包括从一个或多个发射天线发射的时域符号的贡献的频域信号; （2）基于频域信道响应生成变换矩阵和三角矩阵; （3）使用变换矩阵来变换接收到的频域信号以获得变换的频域信号; 和（4）通过执行多级检测来执行符号检测，每个检测阶段使用与检测级相关联的变换的频域接收信号的元素。

公开(公告)号：US08000420B2

公开(公告)日：2011-08-16

申请号：US11993507

申请日：2005-06-24

Applicant: Dennis Hui ,  Abdulrauf Hafeez

Inventor： Dennis Hui ,  Abdulrauf Hafeez

IPC: H03D1/06 ,  H04B1/10

CPC classification number: H04L25/0204 ,  H04L7/041 ,  H04L25/0212 ,  H04L25/0224 ,  H04L25/0244 ,  H04L25/03993

Abstract: A system and method in a radio receiver for joint synchronization and noise covariance estimation of a received signal. A spatially and temporally stacked signal model, whereby successive samples of temporally adjacent received signal vectors and corresponding training vectors are stacked, is used in the derivation of the estimation problem. The Toeplitz structure of the channel response matrix is neglected in the formulation of the estimation problem. The resulting estimator jointly estimates a synchronization position, a channel response matrix, and a noise covariance matrix. An estimate of a whitened channel is then computed based on the noise covariance matrix and the estimate of the channel response matrix.

Abstract translation: 用于接收信号的联合同步和噪声协方差估计的无线电接收机中的系统和方法。 空间和时间叠加的信号模型，其中叠加时间上相邻的接收信号矢量和对应的训练矢量的连续样本，用于推导估计问题。 通道响应矩阵的Toeplitz结构在估计问题的描述中被忽略。 所得到的估计器共同估计同步位置，信道响应矩阵和噪声协方差矩阵。 然后，基于噪声协方差矩阵和信道响应矩阵的估计来计算白化信道的估计。

公开(公告)号：US20100271931A1

公开(公告)日：2010-10-28

申请号：US12555973

申请日：2009-09-09

Applicant: Jung-Fu Cheng ,  Kambiz Zangi ,  Dennis Hui ,  Leonid Krasny

Inventor： Jung-Fu Cheng ,  Kambiz Zangi ,  Dennis Hui ,  Leonid Krasny

IPC: H04J11/00 ,  H04B17/00

CPC classification number: H04B17/0047 ,  H04B7/024 ,  H04B7/0626 ,  H04B7/0639 ,  H04B17/336 ,  H04B17/364 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0019 ,  H04L1/0026 ,  H04L1/20 ,  H04L25/0212 ,  H04L25/022 ,  H04L25/0224

Abstract: Accurate downlink channel estimates are calculated based on infrequently transmitted Channel State Information (CSI) feedback data from a UE 20. A plurality of non-uniformly spaced digital CSI feedback samples, representing the frequency response of a downlink communication channel, is received from the UE. The received CSI feedback samples are demodulated and inverse quantized. A time domain tap delay channel model is generated from the inverse quantized CSI feedback samples. The time domain tap delay channel model may be frequency-transformed to obtain a reconstructed frequency response of the downlink communication channel in the frequency domain. Alternatively, channel delays may be estimated based on prior delays and/or known references signals transmitted on the uplink. Channel estimates between CSI reporting instances may be predicted, such as by a sample & hold or a linear predictor. The delays may be presumed fixed, and Kalman filter coefficients evolved over time.

Abstract translation: 基于来自UE20的不频繁发送的信道状态信息（CSI）反馈数据来计算准确的下行链路信道估计。从UE接收表示下行链路通信信道的频率响应的多个非均匀间隔的数字CSI反馈样本 。 接收的CSI反馈样本被解调和反量化。 时域抽头延迟信道模型是从逆向量化的CSI反馈样本生成的。 时域抽头延迟信道模型可以被频率变换以获得频域中下行链路通信信道的重构频率响应。 或者，可以基于在上行链路上发送的先前的延迟和/或已知的参考信号来估计信道延迟。 可以预测CSI报告实例之间的信道估计，例如通过采样和保持或线性预测器。 可以推测延迟是固定的，并且卡尔曼滤波器系数随时间演化。

公开(公告)号：US20080205451A1

公开(公告)日：2008-08-28

申请号：US11678946

申请日：2007-02-26

Applicant: Rajaram Ramesh ,  Dennis Hui

Inventor： Rajaram Ramesh ,  Dennis Hui

IPC: H04B3/10

CPC classification number: H04L5/0007 ,  H04L5/0048 ,  H04L5/0058

Abstract: Transmission scheme for the uplink of FDMA systems that improves performance in an interference-dominated system by using a pilot scheme that provides enough information so that channel estimates can be obtained for a particular user, but which at the same time makes it possible to use pilot patterns that are different in different cells so that co-channel interference is mitigated. A codeword is used to position a set of pilot symbols within a set of subcarriers wherein each subcarrier has a first pilot time slot and a second pilot time slot associated with one or more data time slots. The set of subcarriers are identified on which to transmit the composite signal and the first pilot time slots and the second pilot time slots are filled with the pilot symbols in accordance with the codeword. The composite signal is then formatted as a combination of modulated data and pilot signals.

Abstract translation: 用于通过使用提供足够信息的导频方案来改善以干扰为主的系统中的性能的FDMA系统的上行链路的传输方案，以便可以为特定用户获得信道估计，但同时使得可以使用导频 在不同的小区中不同的模式，从而减轻了同信道干扰。 码字用于将一组导频符号定位在一组子载波中，其中每个子载波具有与一个或多个数据时隙相关联的第一导频时隙和第二导频时隙。 识别发射复合信号的子载波集合，并且根据码字对导频符号填充第一导频时隙和第二导频时隙。 然后将复合信号格式化为调制数据和导频信号的组合。

公开(公告)号：US20070259681A1

公开(公告)日：2007-11-08

申请号：US11741083

申请日：2007-04-27

Applicant: Jung-fu Cheng ,  Anders Furuskar ,  Dennis Hui ,  Muhammad Ali Kazmi ,  Arne Simonssson ,  Per Skillermark

Inventor： Jung-fu Cheng ,  Anders Furuskar ,  Dennis Hui ,  Muhammad Ali Kazmi ,  Arne Simonssson ,  Per Skillermark

IPC: H04B7/00

CPC classification number: H04L27/2608 ,  H04L5/006 ,  H04L5/0062 ,  H04L27/364 ,  H04W72/1231

Abstract: According to methods and apparatus taught herein, user equipments (UEs) in a wireless communication network are scheduled based on determining received signal power densities for a plurality of UEs to be scheduled, allocating UEs to scheduling intervals based on a sorting of their received signal power densities, and assigning UEs in the same scheduling interval to mirror frequency bands within an available frequency spectrum according to the sorting. For example, UEs to be scheduled are assigned to a given scheduling interval in rank order of their received signal power densities until the scheduling interval is fully allocated. Remaining UEs are assigned in rank order to one or more other scheduling intervals, and the process may be repeated or otherwise carried out on an ongoing basis. Such an allocation scheme tends to minimize both adjacent frequency and mirror frequency interferences between UEs scheduled in the same interval.

Abstract translation: 根据本文教导的方法和装置，基于确定要调度的多个UE的接收信号功率密度来调度无线通信网络中的用户设备（UE），基于对其接收信号功率的分类，将UE分配到调度间隔 并且按照相同的调度间隔分配UE以根据排序来反映可用频谱内的频带。 例如，要调度的UE被分配给其接收信号功率密度的等级的给定调度间隔，直到调度间隔被完全分配为止。 剩余的UE被按照等级顺序分配给一个或多个其他调度间隔，并且该过程可以在持续的基础上重复或以其他方式执行。 这种分配方案倾向于最小化在相同间隔中调度的UE之间的相邻频率和镜像频率干扰。

公开(公告)号：US06778619B2

公开(公告)日：2004-08-17

申请号：US09853207

申请日：2001-05-11

Applicant: Kambiz C. Zangi ,  Dennis Hui

Inventor： Kambiz C. Zangi ,  Dennis Hui

IPC: H04L102

CPC classification number: H04L25/03331 ,  H04L1/0618 ,  H04L25/03299

Abstract: A method for receiving transmissions includes receiving a first symbol-spaced baseband signal corresponding to first portions of first and second encoded data sequences transmitted over first and second baseband channels, and receiving a second symbol-spaced baseband signal corresponding to second portions of the first and second encoded data sequences transmitted over the first and second baseband channels. The first and second symbol-spaced baseband signals are combined to provide a combined baseband signal, and the combined baseband signal is prefiltered to provide minimum phase channel characteristics. The prefiltered combined baseband signal is equalized to provide an estimate of a data sequence. Related receivers are also discussed.

Abstract translation: 一种用于接收传输的方法包括：接收对应于通过第一和第二基带信道发送的第一和第二编码数据序列的第一部分的第一符号间隔基带信号，以及接收对应于第一和第二基带信道的第二部分的第二符号间隔基带信号， 通过第一和第二基带信道发射的第二编码数据序列。 第一和第二符号间隔的基带信号被组合以提供组合的基带信号，并且组合的基带信号被预过滤以提供最小的相位通道特性。 预过滤的组合基带信号被相等以提供数据序列的估计。 还讨论了相关接收机。