公开(公告)号：US08830839B2

公开(公告)日：2014-09-09

申请号：US13521905

申请日：2010-03-22

Applicant: Jiansong Gan ,  Christian Hoymann ,  Dennis Hui

Inventor： Jiansong Gan ,  Christian Hoymann ,  Dennis Hui

IPC: H04L1/00 ,  H04B7/155 ,  H04L25/02 ,  H04L12/26 ,  H04B7/06

CPC classification number: H04L1/0026 ,  H04B7/065 ,  H04B7/155 ,  H04L1/003 ,  H04L25/0202 ,  H04L43/08

Abstract: A backhaul link is established between a base station and a relay that assists the base station in communicating with a mobile device over an access link established between the relay and the mobile device. The channel response of the backhaul link is determined by estimating first and second parts of the backhaul link channel response, the second part changing faster than the first part. The first part of the backhaul link channel response is estimated by calculating an average of the backhaul link channel response over a predetermined period at the relay and the second part is estimated by calculating variation in the backhaul link channel response over the predetermined period at the relay. Quantized versions of the first and second parts of the backhaul link channel response are transmitted from the relay to the base station over the backhaul link.

Abstract translation: 在基站和中继站之间建立回程链路，帮助基站通过在中继站和移动设备之间建立的接入链路与移动设备进行通信。 通过估计回程链路信道响应的第一和第二部分来确定回程链路的信道响应，第二部分比第一部分更快地改变。 回程链路信道响应的第一部分通过计算中继站上的预定时段内的回程链路信道响应的平均值来估计，并且通过在继电器上计算预定时段内的回程链路信道响应的变化来估计第二部分 。 回程链路信道响应的第一和第二部分的量化版本通过回程链路从中继站发送到基站。

公开(公告)号：US20120300654A1

公开(公告)日：2012-11-29

申请号：US13521905

申请日：2010-03-22

Applicant: Jiansong Gan ,  Christian Hoymann ,  Dennis Hui

Inventor： Jiansong Gan ,  Christian Hoymann ,  Dennis Hui

IPC: H04W24/00 ,  H04W88/08 ,  H04W88/04

CPC classification number: H04L1/0026 ,  H04B7/065 ,  H04B7/155 ,  H04L1/003 ,  H04L25/0202 ,  H04L43/08

Abstract: A backhaul link is established between a base station and a relay that assists the base station in communicating with a mobile device over an access link established between the relay and the mobile device. The channel response of the back-haul link is determined by estimating first and second parts of the backhaul link channel response, the second part changing faster than the first part. The first part of the backhaul link channel response is estimated by calculating an average of the backhaul link channel response over a predetermined period at the relay and the second part is estimated by calculating variation in the backhaul link channel response over the predetermined period at the relay. Quantized versions of the first and second parts of the backhaul link channel response are transmitted from the relay to the base station over the backhaul link

Abstract translation: 在基站和中继站之间建立回程链路，帮助基站通过在中继站和移动设备之间建立的接入链路与移动设备进行通信。 通过估计回程链路信道响应的第一和第二部分来确定回程链路的信道响应，第二部分比第一部分更快地改变。 回程链路信道响应的第一部分通过计算中继站上的预定时段内的回程链路信道响应的平均值来估计，并且通过在继电器上计算预定时段内的回程链路信道响应的变化来估计第二部分 。 回程链路信道响应的第一和第二部分的量化版本通过回程链路从中继站传送到基站

公开(公告)号：US20110274185A1

公开(公告)日：2011-11-10

申请号：US13145223

申请日：2009-01-19

Applicant: Jiansong Gan ,  Dennis Hui

Inventor： Jiansong Gan ,  Dennis Hui

IPC: H04L27/00

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，并且非主导路径在用户设备（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：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：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：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。