公开(公告)号：US07593384B2

公开(公告)日：2009-09-22

申请号：US11275148

申请日：2005-12-15

申请人： Jung-Fu Cheng

发明人： Jung-Fu Cheng

IPC分类号： H04J1/00

CPC分类号： H04L1/0026 ,  H04L1/0003 ,  H04L1/0009 ,  H04L27/2602

摘要： Multi-carrier broadband wireless communication can be supported by providing identification information that identifies a group of carrier frequencies that an intended recipient of a transmission has selected for use in the transmission. A modulation and coding scheme for use in transmitting on the selected group of carrier frequencies is selected based on communication quality information indicative of communication quality associated with transmitting on the selected group of carrier frequencies. Transmission on the selected group of carrier frequencies is performed according to the selected modulation and coding scheme.

摘要翻译： 多载波宽带无线通信可以通过提供标识信息来支持，识别信息标识传输的预期接收者选择用于传输的一组载波频率。 基于指示与所选择的载波频率组上的发送相关联的通信质量的通信质量信息来选择用于在所选择的载波频率组上进行发送的调制和编码方案。 根据选择的调制和编码方案来执行所选择的载波频率组上的传输。

公开(公告)号：US20090013232A1

公开(公告)日：2009-01-08

申请号：US12159730

申请日：2005-12-30

申请人： Lei Wan ,  Jung-Fu Cheng

发明人： Lei Wan ,  Jung-Fu Cheng

IPC分类号： H04L1/18 ,  G06F11/14

CPC分类号： H04L1/1809 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/1816 ,  H04L1/1845 ,  H04L1/1854

摘要： The present invention relates to automatic repeat request (ARQ) in wireless communication systems wherein a coded message block is spread over a plurality of sub-carriers or components. According to the invention an equalizing HARQ method is introduced. The equalizing HARQ identifies (215) and retransmits (230) the most distorted parts of a received coded message block. In addition, the retransmitted parts can optionally be relocated (225) to components of higher quality, which ensures good retransmission quality for those badly distorted parts in the prior transmission. After a soft-bit combination in a receiving node, the final received codeword experience an equalized quality variation with low multi-state performance loss.

摘要翻译： 本发明涉及无线通信系统中的自动重传请求（ARQ），其中编码的消息块分布在多个子载波或分量上。 根据本发明，引入均衡HARQ方法。 均衡HARQ识别（215）并重传（230）接收的编码消息块的最失真的部分。 此外，重传的部分可以可选地被重定位（225）到更高质量的组件，这确保了在先前传输中的那些严重失真的部分的良好的重传质量。 在接收节点中进行软比特组合之后，最终的接收码字体验到具有低多态性能损失的均衡质量变化。

公开(公告)号：US20080198911A1

公开(公告)日：2008-08-21

申请号：US11676638

申请日：2007-02-20

申请人： Dennis Hui ,  Jung-Fu Cheng

发明人： Dennis Hui ,  Jung-Fu Cheng

IPC分类号： H04B7/12

CPC分类号： H04L25/03159 ,  H04L5/0007 ,  H04L25/0204 ,  H04L25/0224 ,  H04L27/2647 ,  H04L2025/03414 ,  H04L2025/0342 ,  H04L2025/03426

摘要： A method of equalizing a received signal compensates for frequency selectivity of the communication channel taking into account channel estimation errors. The method comprises generating channel estimates for the received signal, computing filter weights for an equalizer based on said channel estimates and a covariance of the channel estimation error, and filtering the received signal using the computed filter weights.

摘要翻译： 考虑到信道估计误差，均衡接收信号的方法补偿通信信道的频率选择性。 该方法包括生成接收信号的信道估计，基于所述信道估计和信道估计误差的协方差计算均衡器的滤波器权重，以及使用计算的滤波器权重对接收信号进行滤波。

公开(公告)号：US20080101321A1

公开(公告)日：2008-05-01

申请号：US11862601

申请日：2007-09-27

申请人： Jung-Fu Cheng ,  Stephen Grant

发明人： Jung-Fu Cheng ,  Stephen Grant

IPC分类号： H04B7/216 ,  H04K1/10 ,  H04L27/28

CPC分类号： H04B7/0473 ,  H04B1/707 ,  H04L1/0026 ,  H04L1/0031 ,  H04L1/0057 ,  H04L1/0073 ,  H04L1/06 ,  H04L25/0202

摘要： A block coding method and system for improving the reliability of Channel Quality Indicators (CQI) and antenna weight Indicators (AWI) reporting. A user terminal first generates 8-bit CQI and 2-bit AWI. A codeword generator produces a codeword responsive to these 10 CQI/AWI bits using a codebook or a generator matrix of a (20,10,6) code. The (20,10,6) code has a minimum Hamming distance of 6 The encoded codeword is transmitted to a receiver for decoding utilizing an identical (20,10,6) codebook.

摘要翻译： 一种用于提高信道质量指示符（CQI）和天线权重指示（AWI）报告的可靠性的块编码方法和系统。 用户终端首先生成8比特CQI和2比特AWI。 码字生成器使用（20,10,6）码的码本或生成矩阵来产生响应于这10个CQI / AWI比特的码字。 （20,10,6）码的最小汉明距离为6.编码的码字被传送到接收机，以利用相同的（20,10,6）码本解码。

公开(公告)号：US20080090517A1

公开(公告)日：2008-04-17

申请号：US11548543

申请日：2006-10-11

申请人： Jung-Fu Cheng

发明人： Jung-Fu Cheng

IPC分类号： H04B7/24

CPC分类号： H04L1/1819 ,  H04L1/0003 ,  H04L1/0013 ,  H04L1/08 ,  H04L1/1825

摘要： A method and apparatus for identifying optimal redundancy version (RV) sequences for HSDPA transmissions based on extensive search. In a first embodiment of the present invention, in HSDPA QPSK mode, the transmitter retransmits according to the RV sequence [0 7 3 4 1 6 5 2] and in HSDPA 16QAM mode, the transmitter retransmits according to the RV sequence [0 1 3 4 5 6 7 1]. In a second embodiment of the present invention, in HSDPA QPSK mode, the transmitter retransmits according to the RV sequence [0 7 3 4 1 6 5 2] if the initial coding rate is greater than or equal to 0.5 and [0 4 3 6 2 1 6 2] if the initial coding rate is less than 0.5. In HSDPA 16QAM mode, the transmitter retransmits according to the RV sequence [0 1 3 4 5 6 7 1] if the initial coding rate is greater than or equal to 0.5 and the transmitter retransmits according to the RV sequence [0 4 5 6 0 4 5 6] if the initial coding rate is less than 0.5. In a third embodiment of the present invention, the transmitter retransmits according to the RV sequence according to each specific initial coding rate. In a fourth embodiment of the present invention, the transmitter retransmits according to the RV sequence according to a specific initial coding rate and a specific mother code rate. An SNR tracking algorithm is provided in conjunction with the optimal sequences for robust HARQ operations.

摘要翻译： 一种用于基于广泛搜索来识别用于HSDPA传输的最佳冗余版本（RV）序列的方法和装置。 在本发明的第一实施例中，在HSDPA QPSK模式中，发射机根据RV序列[0 7 3 4 1 6 5 2]重发，在HSDPA 16QAM模式中，发射机根据RV序列[0 1 3 4 5 6 7 1]。 在本发明的第二实施例中，在HSDPA QPSK模式中，如果初始编码率大于或等于0.5，则发射机根据RV序列[0 7 3 4 1 6 5 2]重发[0 4 3 6 2 1 6 2]如果初始编码率小于0.5。 在HSDPA 16QAM模式下，如果初始编码率大于或等于0.5，发射机根据RV序列[0 1 3 4 5 6 7 1]重发，发射机根据RV序列[0 4 5 6 0 4 5 6]如果初始编码率小于0.5。 在本发明的第三实施例中，发射机根据每个特定的初始编码率根据RV序列重发。 在本发明的第四实施例中，发射机根据特定的初始编码率和特定母码率根据RV序列重传。 结合用于鲁棒HARQ操作的最优序列提供SNR跟踪算法。

公开(公告)号：US20060282739A1

公开(公告)日：2006-12-14

申请号：US11383830

申请日：2006-05-17

申请人： Michael Meyer ,  Henning Wiemann ,  Johan Torsner ,  Mats Sagfors ,  Jung-Fu Cheng

发明人： Michael Meyer ,  Henning Wiemann ,  Johan Torsner ,  Mats Sagfors ,  Jung-Fu Cheng

IPC分类号： H04L1/18 ,  G08C25/02

CPC分类号： H04L1/1848 ,  H04L1/1607 ,  H04L1/1678 ,  H04L1/1812 ,  H04L1/1829 ,  H04L1/1874 ,  H04L2001/0096 ,  H04L2001/125

摘要： Methods for efficiently controlling the retransmission of data units in a wireless telecommunication system, wherein multiple complementary feedback mechanisms are used to control retransmission. A receiver attempts to decode each received data unit. If a data unit is successfully decoded, the receiver transmits positive feedback to the transmitter; if a data unit is not successfully decoded, the receiver transmits negative feedback to the transmitter. In all cases, the transmitter employs at least first and second feedback mechanisms for transmitting the positive and negative feedback. In an exemplary embodiment, acknowledgement (ACK) and non-acknowledgement (NACK) messages are sent in response to the receipt of each data unit on a first unreliable channel and Status Messages identifying sequence numbers of particular data units are periodically transmitted on a second reliable channel; the receiver preferably removes data units from its transmit window only upon receipt of a Status Message indicating successful decode.

摘要翻译： 用于有效地控制无线电信系统中的数据单元重传的方法，其中使用多个互补反馈机制来控制重传。 接收机尝试对每个接收到的数据单元进行解码。 如果数据单元成功解码，则接收机向发射机发送正反馈; 如果数据单元未成功解码，则接收机向发射机发送负反馈。 在所有情况下，发射机至少采用第一和第二反馈机制来发送正反馈。 在示例性实施例中，响应于在第一不可靠信道上接收每个数据单元而发送确认（ACK）和非确认（NACK）消息，并且识别特定数据单元的序列号的状态消息在第二可靠 渠道; 只有在接收到指示成功解码的状态消息时，接收器才优选地从其发送窗口去除数据单元。

公开(公告)号：US20060245476A1

公开(公告)日：2006-11-02

申请号：US11115491

申请日：2005-04-27

申请人： Yi-Pin Wang ,  Jung-Fu Cheng

发明人： Yi-Pin Wang ,  Jung-Fu Cheng

IPC分类号： H04B1/707

CPC分类号： H04J13/20 ,  H04B1/7105 ,  H04B1/71052 ,  H04B1/71055 ,  H04B1/71072 ,  H04J13/0044 ,  H04L25/03305

摘要： A joint detector that improves the performance of receiving a downlink control channel signal for a near-end mobile terminal in the presence of a stronger control channel signal addressed to a far-end mobile terminal sharing the same OVSF, or channelization, code through the use of orthogonal signature sequences. Depending on the specific embodiment, the joint detector may produce the desired bits for the control signal of interest, or may produce detected bits for all control signals sharing the same OVSF code. The joint detector despreads and combines the received code-multiplexed signal, utilizing knowledge of the cross correlations of the set of signature sequences and time-varying channel coefficients to alleviate performance degradation caused by interference from other signals. In various embodiments, the joint detector may be implemented as a modified decorrelating detector, a modified MMSE detector, a modified LS estimator detector, a successive interference-canceling detector, or a jointly hypothesized detector.

摘要翻译： 一种联合检测器，其在存在针对共享相同OVSF的远端移动终端的更强控制信道信号或通过使用的信道化代码的情况下，改善了对于近端移动终端接收下行链路控制信道信号的性能 的正交特征序列。 根据具体实施例，联合检测器可以产生用于感兴趣的控制信号的期望比特，或者可以产生用于共享相同OVSF码的所有控制信号的检测比特。 联合检测器利用所述签名序列集合和时变信道系数的互相关的知识来对接收的码复用信号进行解扩和合并，以减轻由其他信号的干扰引起的性能下降。 在各种实施例中，联合检测器可以被实现为修改的去相关检测器，修改的MMSE检测器，修改的LS估计器检测器，连续的干扰消除检测器或联合假设的检测器。

公开(公告)号：US20050022097A1

公开(公告)日：2005-01-27

申请号：US10624321

申请日：2003-07-22

申请人： Jung-Fu Cheng

发明人： Jung-Fu Cheng

IPC分类号： H04L1/18 ,  G11B5/00 ,  G06K5/04 ,  G11B20/20 ,  H03M13/00

CPC分类号： H04L1/1874 ,  H04L1/1816 ,  H04L1/1819 ,  H04L1/1825 ,  H04L1/188

摘要： A method and apparatus for communicating a message from a transmitting station to a remote receiving station by adaptively selecting a retransmission protocol from two or more retransmission protocols based on at least one changing transmission variable is described herein. The transmitting station transmits a first version of the message in a first transmission. When the previous transmission was unsuccessful, a controller adaptively selects either the first version of the message or a second version of the message in accordance with the selected protocol.

摘要翻译： 这里描述了一种通过基于至少一个变化的传输变量自适应地从两个或更多个重传协议选择重发协议来将消息从发射站传送到远程接收站的方法和装置。 发送站在第一传输中发送消息的第一版本。 当先前的传输不成功时，控制器根据所选择的协议自适应地选择消息的第一版本或消息的第二版本。

公开(公告)号：US09900131B2

公开(公告)日：2018-02-20

申请号：US13430865

申请日：2012-03-27

申请人： Havish Koorapaty ,  Robert Baldemair ,  Jung-Fu Cheng ,  Mattias Frenne ,  Daniel Larsson

发明人： Havish Koorapaty ,  Robert Baldemair ,  Jung-Fu Cheng ,  Mattias Frenne ,  Daniel Larsson

IPC分类号： H04W28/26 ,  H04B7/005 ,  H04L5/00 ,  H04L27/26

CPC分类号： H04L5/0048 ,  H04L5/0007 ,  H04L5/0053 ,  H04L27/2611

摘要： Devices and methods for transmitting information in resource blocks between a base station and one or more communication devices are disclosed. In each resource block (RB) used for a data or control channel transmission, a plurality of non-overlapping regions of resource elements (REs) are defined. Each region is associated with one or multiple unique reference symbols (RSs), and may be further associated with one or more antenna ports. When user equipment (UE) demodulates the information it receives in a particular region of an RB, it uses the RS and/or antenna port associated with that region. The RS and/or antenna port information may be used, for example, to estimate a channel of the communication network or to demodulate and decode the data contained within the associated regions.

公开(公告)号：US09780931B2

公开(公告)日：2017-10-03

申请号：US13494040

申请日：2012-06-12

申请人： Havish Koorapaty ,  Robert Baldemair ,  Jung-Fu Cheng ,  Mattias Frenne ,  Daniel Larsson

发明人： Havish Koorapaty ,  Robert Baldemair ,  Jung-Fu Cheng ,  Mattias Frenne ,  Daniel Larsson

IPC分类号： H04L27/00 ,  H04L5/00 ,  H04L27/26 ,  H04L25/02

CPC分类号： H04L5/0048 ,  H04L5/0023 ,  H04L5/0026 ,  H04L5/0053 ,  H04L25/0204 ,  H04L25/0228 ,  H04L27/2611

摘要： Devices and methods for transmitting information in resource blocks between a base station and one or more communication devices are disclosed. In each resource block (RB) used for a data or control channel transmission, a plurality of non-overlapping regions of resource elements (REs) are defined. Each region is associated with one or multiple unique reference symbols (RSs). When user equipment (UE) demodulates the information it receives in a particular region of a resource block (RB), it uses the reference symbol (RS) associated with that region. The reference symbol (RS) information may be used, for example, to estimate a channel of the communication network or to demodulate and decode the data contained within the associated regions.