公开(公告)号：US09036684B2

公开(公告)日：2015-05-19

申请号：US13247597

申请日：2011-09-28

Applicant: Dennis Hui ,  Kumar Balachandran ,  Jung-Fu Cheng ,  Jiann-Ching Guey

Inventor： Dennis Hui ,  Kumar Balachandran ,  Jung-Fu Cheng ,  Jiann-Ching Guey

IPC: H04B1/38 ,  H04B7/04 ,  H04B7/06 ,  H04L25/02 ,  H04L5/00 ,  H04L25/03

CPC classification number: H04B7/0413 ,  H04B7/0615 ,  H04B7/0686 ,  H04L5/0023 ,  H04L5/005 ,  H04L25/0204 ,  H04L25/0226 ,  H04L2025/03426

Abstract: Compressive sampling is used to generate pilot symbols to be transmitted over an array of antennas in a MIMO wireless communications device. A pilot symbol is transmitted over the array of antennas according to a spatially randomized antenna transmission function that randomly changes across the array of antennas. The randomized antenna transmission function may randomly select/deselect antennas and/or randomly change amplitude and/or phase of the pilot symbol transmission. Channel estimates can be constructed at a receiver based on the spatially randomized pilot symbols that were transmitted.

Abstract translation: 压缩采样用于生成将在MIMO无线通信设备中通过天线阵列传输的导频符号。 根据在天线阵列上随机变化的空间随机天线传输功能，在天线阵列上传输导频符号。 随机天线发送功能可以随机地选择/取消选择天线和/或随机地改变导频符号传输的幅度和/或相位。 可以基于发送的空间随机化导频符号在接收机处构造信道估计。

公开(公告)号：US08947993B2

公开(公告)日：2015-02-03

申请号：US13556818

申请日：2012-07-24

Applicant: Chester Park ,  Dennis Hui

Inventor： Chester Park ,  Dennis Hui

IPC: H04L27/26

CPC classification number: H04L27/2627 ,  H04L27/2631

Abstract: Methods may be provided to transmit data from a wireless terminal operating in a radio access network. For example, sampling rate conversion may be performed on a serial stream of modulation symbols to generate sampling rate converted symbols, and the sampling rate converted symbols may be transmitted over a wireless channel to a node of the radio access network. Related terminals are also discussed.

Abstract translation: 可以提供方法来从在无线电接入网络中操作的无线终端发送数据。 例如，可以对串行调制符号流执行采样率转换以产生采样率转换的符号，并且可以通过无线信道将采样率转换的符号发送到无线电接入网络的节点。 还讨论了相关终端。

公开(公告)号：US08774136B2

公开(公告)日：2014-07-08

申请号：US13145223

申请日：2009-01-19

Applicant: Jiansong Gan ,  Dennis Hui

Inventor： Jiansong Gan ,  Dennis Hui

IPC: H04L27/26

CPC classification number: H04L27/2647 ,  H04B7/024 ,  H04B7/0417 ,  H04B7/0626 ,  H04L1/0026 ,  H04L25/03343 ,  H04L2025/03426

Abstract: A method and an arrangement (600) in a user equipment (140) for quantizing channel state information in a coordinated multi-point transmission radio communication system (100). A dominant path is between the user equipment (140) and a first network node (110) and a non-dominant path is between the user equipment (140) and a second network node (120, 130). A ratio of the non-dominant path channel response, such as fast fading, to the dominant path channel response is quantized by using a codebook disclosed herein. A method and an arrangement (400) for generating a codebook by applying a log squared error distortion measure in an iterative algorithm. A method and an arrangement (900) in a user equipment (140) for allocating available bits among at least two quantized ratios in a channel state information feedback procedure. The bits are allocated by means of selecting (270) at least one codebook based on statistic properties, such as path gain, of the non-dominant path.

Abstract translation: 一种用于在协调的多点传输无线电通信系统（100）中量化信道状态信息的用户设备（140）中的方法和装置（600）。 主要路径在用户设备（140）和第一网络节点（110）之间，并且非主要路径在用户设备（140）和第二网络节点（120,130）之间。 通过使用本文公开的码本来量化非优势路径信道响应（例如快速衰落）与主路径信道响应的比率。 一种用于通过在迭代算法中应用对数平方误差失真测量来生成码本的方法和装置（400）。 一种在用户设备（140）中用于在信道状态信息反馈过程中在至少两个量化比率中分配可用比特的方法和装置（900）。 通过基于非主导路径的统计特性（例如路径增益）来选择（270）至少一个码本来分配比特。

公开(公告)号：US08718165B2

公开(公告)日：2014-05-06

申请号：US11763192

申请日：2007-06-14

Applicant: Dennis Hui ,  Leonid Krasny

Inventor： Dennis Hui ,  Leonid Krasny

IPC: H04B7/02

CPC classification number: H04B7/0417 ,  H04B7/0426 ,  H04B7/0626 ,  H04L1/0675 ,  H04L25/0206 ,  H04L27/2601

Abstract: Multi-antenna transmission control presented herein involves generating a set of virtual channel realizations at the transmitter that shares the same second-order statistics as the actual channel realizations observed for a targeted receiver. By making the control-related quantities of interest at the transmitter depend on the long-term statistics of the channel, the actual channel realizations are not needed for transmission control, e.g., for accurate Multiple-Input-Multiple-Output (MIMO) preceding. As such, the use of virtual channel realizations enables transmission control that approaches the “closed-loop” channel capacity that would be provided by full feedback of the (instantaneous) actual channel realizations, without requiring the overhead signaling burden that attends full feedback.

Abstract translation: 本文提出的多天线传输控制涉及在发射机处生成一组虚拟信道实现，其共享与针对目标接收机观察到的实际信道实现相同的二阶统计。 通过使发射机处的控制相关数量取决于信道的长期统计，例如对于精确的多输入多输出（MIMO）预编码，传输控制不需要实际的信道实现。 因此，虚拟信道实现的使用使得接近将通过（瞬时）实际信道实现的完全反馈提供的“闭环”信道容量的传输控制，而不需要出现完全反馈的开销信令负担。

公开(公告)号：US08711791B2

公开(公告)日：2014-04-29

申请号：US12972688

申请日：2010-12-20

Applicant: Yi-Pin Eric Wang ,  Dennis Hui ,  Havish Koorapaty

Inventor： Yi-Pin Eric Wang ,  Dennis Hui ,  Havish Koorapaty

IPC: H04W4/00

CPC classification number: H04L63/1458 ,  H04W12/12

Abstract: A method of managing wireless transmissions from a mobile handset includes determining whether the mobile handset is a source of a Random Access Channel (RACH) overload in the wireless network and, upon determining that the mobile handset is a source of the RACH overload, configuring the mobile handset to replace usage of a first RACH resource causing the RACH overload with usage of a second RACH resource specified by the processor.

Abstract translation: 管理来自移动手持机的无线传输的方法包括确定移动手持机是否是无线网络中随机接入信道（RACH）过载的源，并且在确定移动手持机是RACH过载的源时，配置 移动手机来替换使用由处理器指定的第二RACH资源的导致RACH过载的第一RACH资源的使用。

公开(公告)号：US20130128788A1

公开(公告)日：2013-05-23

申请号：US13627009

申请日：2012-09-26

Applicant: Jiann-Ching Guey ,  Kumar Balachandran ,  Dennis Hui

Inventor： Jiann-Ching Guey ,  Kumar Balachandran ,  Dennis Hui

IPC: H04W76/04

CPC classification number: H04W76/28 ,  H04W52/0206 ,  H04W52/0216 ,  Y02B70/30 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/166 ,  Y02D70/24 ,  Y02D70/25

Abstract: Systems and methods are disclosed for efficient operation of wireless access nodes in a dense deployment of wireless access nodes in a cellular communication network. In general, the dense deployment of wireless access nodes includes multiple wireless access nodes in a service area. The service area is preferably, but not necessarily, a low-load service area. As used herein, a low-load service area is an area within an overall service area of the dense deployment of wireless access nodes in which all wireless access nodes are not needed to provide a desired data capacity. Overlapping radio coverage areas of the wireless access nodes in, or serving, the service area are leveraged to enable efficient operation of the wireless access nodes in the service area.

Abstract translation: 公开了用于在蜂窝通信网络中的无线接入节点的密集部署中的无线接入节点的有效操作的系统和方法。 通常，无线接入节点的密集部署包括服务区域中的多个无线接入节点。 服务区域优选但不一定是低负载服务区域。 如本文所使用的，低负载服务区域是无线接入节点的密集部署的总体服务区域内的区域，其中不需要所有无线接入节点来提供期望的数据容量。 利用服务区域内或服务于服务区域的无线接入节点的重叠无线电覆盖区域来实现服务区域中的无线接入节点的有效操作。

公开(公告)号：US08406326B2

公开(公告)日：2013-03-26

申请号：US12779106

申请日：2010-05-13

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

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

IPC: H04K1/10

CPC classification number: H04W72/0413 ,  H04L1/0019 ,  H04L1/0028 ,  H04L1/20 ,  H04W72/042

Abstract: The required bitrate for reporting channel state information from a network transceiver to the network is dramatically reduced, while maintaining fidelity of channel estimates, by exploiting prior channel estimates and the time correlation of channel response. For a selected set of sub-carriers, the transceiver estimates channel frequency response from pilot signals. The transceiver also predicts the frequency response for each selected sub-carrier, by multiplying a state vector comprising prior frequency response estimate and a coefficient vector comprising linear predictive coefficients. The predicted frequency response is subtracted from the estimated frequency response, and the prediction error is quantized and transmitted to the network. The network maintains a corresponding state vector and predictive coefficient vector, and also predicts a frequency response for each selected sub-carrier. The received prediction error is inverse quantized and subtracted from the predicted frequency response to yield a frequency response corresponding to that estimated at the transceiver.

Abstract translation: 通过利用先前的信道估计和信道响应的时间相关性，可以显着降低从网络收发器向网络报告信道状态信息所需的比特率，同时保持信道估计的保真度。 对于所选择的一组子载波，收发器估计来自导频信号的信道频率响应。 收发器还通过将包括先前频率响应估计的状态向量和包括线性预测系数的系数向量相乘来预测每个所选子载波的频率响应。 从估计的频率响应中减去预测的频率响应，并将预测误差量化并发送到网络。 网络维持相应的状态向量和预测系数向量，并且还预测每个选择的子载波的频率响应。 接收的预测误差被反量化，并从预测的频率响应中减去，以产生与在收发机处估计的频率响应相对应的频率响应。

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：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。