公开(公告)号：US08442449B2

公开(公告)日：2013-05-14

申请号：US12941114

申请日：2010-11-08

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

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

IPC分类号： H04B1/00 ,  H04B7/00

CPC分类号： H04B7/0417 ,  H04B7/065 ,  H04B7/0658 ,  H04B7/066 ,  H04B7/0663

摘要： A receiver and a method are described herein for reducing an amount of channel state information related to a transmit channel correlation matrix ΦTX that is feedback to a transmitter. In addition, to a transmitter and a method are described herein for reconstructing the transmit channel correlation matrix φTX using the reduced channel state feedback information received from the receiver.

摘要翻译： 本文描述了一种接收机和方法，用于减少与向发射机反馈的发射信道相关矩阵PhiTX相关的信道状态信息量。 此外，本文描述了一种发射机和方法，用于使用从接收机接收的减少的信道状态反馈信息重建发射信道相关矩阵phiTX。

公开(公告)号：US08428164B2

公开(公告)日：2013-04-23

申请号：US12679419

申请日：2008-03-31

申请人： Karl Molnar ,  Jung-Fu Cheng ,  Stefan Parkvall

发明人： Karl Molnar ,  Jung-Fu Cheng ,  Stefan Parkvall

IPC分类号： H04L27/28 ,  H04K1/10

CPC分类号： H04W72/0406 ,  H04J11/0069 ,  H04L1/0071 ,  H04L1/0072 ,  H04L1/0079 ,  H04L5/0007 ,  H04L5/0044 ,  H04L5/0048 ,  H04L27/2637 ,  H04W72/042

摘要： A method and a radio base station for interleaving control channel data to be transmitted in a telecommunications system are described. The method comprises grouping the control channel elements CCE1-CCEn into a first order of control channel symbol groups, determining a number of available symbol group positions of control channel transmission resources, adding symbol groups comprising “dummy” values or zeros to the first order of control channel symbol groups, interleaving the first order of the control channel symbol groups resulting in an a second order, cyclic shifting the second order and mapping the cyclic shifted second order of control channel symbol groups to the control channel transmission resources.

摘要翻译： 描述用于交织要在电信系统中发送的控制信道数据的方法和无线电基站。 该方法包括将控制信道单元CCE1-CCEn分组为控制信道符号组的一级，确定控制信道传输资源的可用符号组位置的数目，将包括“虚拟”值或零的符号组添加到第一级 控制信道符号组，交织导致二阶的控制信道符号组的第一级，循环移位第二级，并将循环移位的第二级控制信道符号组映射到控制信道传输资源。

公开(公告)号：US08413021B2

公开(公告)日：2013-04-02

申请号：US13588791

申请日：2012-08-17

申请人： Yi-Pin Eric Wang ,  Jung-Fu Cheng

发明人： Yi-Pin Eric Wang ,  Jung-Fu Cheng

IPC分类号： H03M13/00

CPC分类号： H04L1/005

摘要： Techniques for generating soft values for parity bits in a convolutional decoding process are disclosed. An exemplary method comprises, for each of at least one iteration in at least one soft-input soft-output decoder, calculating intermediate probability values for each possible transition between a first plurality of candidate decoder states at a first time and a second plurality of candidate decoder states at a second time. Two or more partial sums are then computed from the intermediate probability values, wherein the partial sums correspond to possible combinations of two or more systematic bits, two or more parity bits, or at least one systematic bit and at least one parity bit. Soft values, such as log-likelihood values, are then estimated for each of at least one systematic bit and at least one parity bit of the received communications data corresponding to the interval between the first and second times, based on the partial sums.

摘要翻译： 公开了在卷积解码过程中产生用于奇偶校验位的软值的技术。 一种示例性方法包括对于至少一个软输入软输出解码器中的至少一次迭代中的每一个，为第一时间的第一多个候选解码器状态和第二多个候选者之间的每个可能的转换计算中间概率值 解码器第二次状态。 然后从中间概率值计算两个或多个部分和，其中部分和对应于两个或多个系统位，两个或更多个奇偶校验位或至少一个系统位和至少一个奇偶校验位的可能组合。 然后，基于部分和，针对对应于第一和第二时间之间的间隔的接收到的通信数据的至少一个系统位和至少一个奇偶校验位中的每一个估计诸如对数似然值的软值。

公开(公告)号：US20130077658A1

公开(公告)日：2013-03-28

申请号：US13247597

申请日：2011-09-28

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

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

IPC分类号： H04L27/28 ,  H04B1/38 ,  H04L27/00

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

摘要： 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.

摘要翻译： 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：US08379547B2

公开(公告)日：2013-02-19

申请号：US12467086

申请日：2009-05-15

申请人： Yang Hu ,  David Astely ,  Jung-Fu Cheng ,  Sorour Falahati

发明人： Yang Hu ,  David Astely ,  Jung-Fu Cheng ,  Sorour Falahati

IPC分类号： H04B1/54 ,  H04L5/14

CPC分类号： H04W72/0413 ,  H04L1/1854 ,  H04L1/1861 ,  H04L5/0007 ,  H04L5/0016 ,  H04L5/0053 ,  H04L5/0092 ,  H04L5/14

摘要： In a method of operating a communication network (20) a time division duplex (TDD) frame (F) of information is communicated over a radio interface (32) between a wireless terminal (30) and a base station node (28). The method comprises the wireless terminal (30) receiving plural downlink (DL) subframes of the frame and, in response thereto, configuring a Physical Uplink Control Channel (PUCCH) channel to comprise up to four acknowledgements by using only two PUCCH channel resources and using PUCCH format 1a or PUCCH format 1b. In an example embodiment a PUCCH channel resource is specified by a sequence utilized for transmission of at least part of the PUCCH channel and a cyclical shift applied to the sequence. The two sequences of the respective two PUCCH resources are orthogonal, and the cyclical shift of the two PUCCH resources can be in a frequency domain, a time domain, or both the frequency domain and the time domain.

公开(公告)号：US08341484B2

公开(公告)日：2012-12-25

申请号：US12663459

申请日：2008-05-09

申请人： Stefan Parkvall ,  Jung-Fu Cheng

发明人： Stefan Parkvall ,  Jung-Fu Cheng

IPC分类号： H04L1/08

CPC分类号： H04L1/1822 ,  H04L1/1819 ,  H04L1/1825 ,  H04L1/1835 ,  H04L1/1845

摘要： A first transceiver that supports hybrid Automatic Repeat Request (hybrid ARQ) functionality is operated. Initially, it is operated to transmit data blocks having a nominal maximum data block size, M0. In response to detecting that a second transceiver does not have sufficient soft buffer memory space to store data blocks associated with an anticipated number of active hybrid ARQ processes, the transceiver is operated to transmit data blocks having a reduced data block size, M′. The anticipated number of active hybrid ARQ processes can be, for example, higher than a nominal number of active hybrid ARQ processes.

摘要翻译： 支持混合自动重传请求（Hybrid ARQ）功能的第一个收发器。 最初，它被操作以发送具有标称最大数据块大小M0的数据块。 响应于检测到第二收发器不具有足够的软缓冲存储器空间来存储与预期数量的主动混合ARQ过程相关联的数据块，所述收发器被操作以发送具有减小的数据块大小M'的数据块。 主动混合ARQ过程的预期数量可以例如高于活动混合ARQ过程的标称数量。

公开(公告)号：US20120311398A1

公开(公告)日：2012-12-06

申请号：US13588791

申请日：2012-08-17

申请人： Yi-Pin Eric Wang ,  Jung-Fu Cheng

发明人： Yi-Pin Eric Wang ,  Jung-Fu Cheng

IPC分类号： H03M13/05 ,  G06F11/10

CPC分类号： H04L1/005

摘要： Techniques for generating soft values for parity bits in a convolutional decoding process are disclosed. An exemplary method comprises, for each of at least one iteration in at least one soft-input soft-output decoder, calculating intermediate probability values for each possible transition between a first plurality of candidate decoder states at a first time and a second plurality of candidate decoder states at a second time. Two or more partial sums are then computed from the intermediate probability values, wherein the partial sums correspond to possible combinations of two or more systematic bits, two or more parity bits, or at least one systematic bit and at least one parity bit. Soft values, such as log-likelihood values, are then estimated for each of at least one systematic bit and at least one parity bit of the received communications data corresponding to the interval between the first and second times, based on the partial sums.

摘要翻译： 公开了在卷积解码过程中产生用于奇偶校验位的软值的技术。 一种示例性方法包括对于至少一个软输入软输出解码器中的至少一次迭代中的每一个，为第一时间的第一多个候选解码器状态和第二多个候选者之间的每个可能的转换计算中间概率值 解码器第二次状态。 然后从中间概率值计算两个或多个部分和，其中部分和对应于两个或多个系统位，两个或更多个奇偶校验位或至少一个系统位和至少一个奇偶校验位的可能组合。 然后，基于部分和，针对对应于第一和第二时间之间的间隔的接收到的通信数据的至少一个系统位和至少一个奇偶校验位中的每一个估计诸如对数似然值的软值。

公开(公告)号：US20120294203A1

公开(公告)日：2012-11-22

申请号：US13109524

申请日：2011-05-17

申请人： Havish Koorapaty ,  Jung-Fu Cheng

发明人： Havish Koorapaty ,  Jung-Fu Cheng

IPC分类号： H04J3/00 ,  H04W76/02

CPC分类号： H04L1/0002 ,  H04B7/2643 ,  H04W84/045 ,  H04W92/20

摘要： A system and method to use existing Long Term Evolution (LTE) and Worldwide Interoperability for Microwave Access (WiMAX) based signaling to effectuate dual-channel Time Division Duplex (TDD) communication between two transceivers giving preference to one type of subframes (either downlink or uplink) for data transmission. In backhaul communications between pico (or femto) and macro base stations, using LTE and WiMAX's TDD mode in such a manner effectively reduces unnecessary transmissions of pilot and synchronization sequence in downlink signaling, thereby reducing the level of pilot overhead and minimizing interference when data is not being transmitted. Similarly, the use of existing LTE (or WiMAX) implementations of TDD radio frames in this manner may achieve radio silence for some duration (e.g., when no uplink sub-frames are transmitted) when operating in a license-exempt spectrum, thereby allowing other license-exempt devices to potentially share the radio channel during the silence period.

摘要翻译： 使用现有长期演进（LTE）和全球微波接入互操作性（WiMAX）的信令的系统和方法来实现两个收发器之间的双信道时分双工（TDD）通信，其优先于一种类型的子帧（下行链路或 上行链路）进行数据传输。 在微微（或毫微微）和宏基站之间的回程通信中，以这种方式使用LTE和WiMAX的TDD模式有效地减少了下行链路信令中的导频和同步序列的不必要的传输，从而降低了导频开销的水平，并且当数据为 不被传送 类似地，以这种方式使用TDD无线电帧的现有LTE（或WiMAX）实施方式可以在一些持续时间内实现无线电静音（例如，当没有发送上行链路子帧时）在免许可频谱中操作，从而允许其他 在免安装期间可以共享无线电频道的免授权设备。

公开(公告)号：US20120236774A1

公开(公告)日：2012-09-20

申请号：US13048226

申请日：2011-03-15

申请人： Jiann-Ching Guey ,  Shing-Wa Wong ,  Jung-Fu Cheng ,  Dennis Hui

发明人： Jiann-Ching Guey ,  Shing-Wa Wong ,  Jung-Fu Cheng ,  Dennis Hui

IPC分类号： H04W72/10

CPC分类号： H04W28/16 ,  H04W72/04 ,  H04W92/12

摘要： A system for managing radio access resources includes a joint radio resource management/transport resource management unit configured to communicate with a plurality of radio units over a transport network, to jointly allocate radio resources at the radio unit and transport resources on the transport network in response to requests from wireless terminals requesting access to radio resources from the radio units, to send a radio resource allocation schedule to the plurality of radio units that defines radio resource allocations for the wireless terminals, and to generate a transport resource allocation schedule that defines transport resource allocations for the wireless terminals. The system further includes a transport resource controller configured to receive the transport resource allocation schedule and to map user data to physical transport resources on the transport network in response to the transport resource allocation schedule.

摘要翻译： 一种用于管理无线电接入资源的系统包括：联合无线电资源管理/传输资源管理单元，被配置为通过传输网络与多个无线电单元进行通信，以在无线电单元处共同分配无线电资源，并响应于传输网络上的资源传输 向来自无线单元请求接入无线电资源的无线终端的请求向定义无线终端的无线资源分配的多个无线单元发送无线资源分配调度，并生成定义传输资源的传输资源分配调度 为无线终端分配。 该系统还包括传输资源控制器，其被配置为接收传输资源分配调度，并且响应于传输资源分配调度，将用户数据映射到传输网络上的物理传输资源。

公开(公告)号：US20120230275A1

公开(公告)日：2012-09-13

申请号：US13472389

申请日：2012-05-15

申请人： Jung-Fu Cheng

发明人： Jung-Fu Cheng

IPC分类号： H04W72/04

CPC分类号： H04L1/0067 ,  H04L1/0071 ,  H04L1/0073 ,  H04L1/1861 ,  H04L2001/125

摘要： A system, method and node for unambiguous encoding of Physical Downlink Control Channel (PDCCH) channels in a Long Term Evolution (LTE) telecommunications system to remove detection errors. The method includes modifying a size of a circular buffer where the coded bits are collected to avoid repetition of the coded bits in consecutive subset of the control channel elements allocated to the PDCCH. The size of the circular buffer is selected so that it is not equal to the number of coded bits output from the encoder. Coded bits can be deleted from or added to the coded bit sequence depending on the size of the circular buffer.

摘要翻译： 用于长期演进（LTE）电信系统中的物理下行链路控制信道（PDCCH）信道的明确编码的系统，方法和节点，以消除检测错误。 该方法包括修改循环缓冲器的大小，其中收集编码比特以避免在分配给PDCCH的控制信道单元的连续子集中重复编码比特。 选择循环缓冲器的大小，使其不等于从编码器输出的编码位数。 取决于循环缓冲区的大小，编码位可以从编码位序列中删除或添加到编码位序列中。