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31. 发明申请

US20080240208A1 Adaptive Switching Techniques for Hybrid Automatic Repeat Request Systems 有权
标题翻译：混合自动重传请求系统的自适应交换技术
公开(公告)号：US20080240208A1
公开(公告)日：2008-10-02
申请号：US12054502
申请日：2008-03-25
申请人： Hanqing Lou , Ahmadreza Hedayat , Genyuan Wang , Hang Jin
发明人： Hanqing Lou , Ahmadreza Hedayat , Genyuan Wang , Hang Jin
IPC分类号： H04L1/08
CPC分类号： H04L1/1825 , H04B7/0671 , H04L1/06 , H04L1/1812 , H04L5/0007
摘要： Apparatus, system, and method for an adaptive transmission selection technique. A retransmission scheme is selected for a multiple-input-multiple-output (MIMO) wireless communications system. Techniques are provided herein for selecting from a plurality of wireless communication techniques when a first device needs to retransmit a signal (one or more packets of data) to a second device. The first device determines when the signal which was originally wirelessly transmitted using beamforming techniques via multiple antennas of the first device to the second device needs to be retransmitted to the second device. If a retransmission is needed, the first device determines channel conditions with respect to the second device. The first device selects a retransmission scheme from a plurality of transmission schemes based on the channel conditions for retransmitting the signal via the multiple antennas of the first device to the second device. A first retransmission technique is selected when the channel conditions are static. A second retransmission technique is selected when the channel conditions are relatively slowly changing, and a third retransmission technique is selected when the channel conditions are relatively quickly changing.
摘要翻译：用于自适应传输选择技术的装置，系统和方法。针对多输入多输出（MIMO）无线通信系统选择重传方案。本文提供了技术，用于当第一设备需要将信号（一个或多个数据包）发送到第二设备时从多个无线通信技术中进行选择。第一设备确定何时首先通过第一设备的多个天线使用波束成形技术无线传输的信号到第二设备需要被重新发送到第二设备。如果需要重传，则第一设备确定相对于第二设备的信道条件。第一设备基于用于经由第一设备的多个天线向第二设备重传信号的信道条件，从多个传输方案中选择重传方案。当信道条件是静态时，选择第一种重传技术。当信道条件相对缓慢地改变时，选择第二重传技术，并且当信道条件相对快速变化时选择第三重传技术。

32. 发明申请

US20080092025A1 Method and System for Improving Decoding Efficiency in Wireless Receivers 有权
标题翻译：提高无线接收机解码效率的方法与系统
公开(公告)号：US20080092025A1
公开(公告)日：2008-04-17
申请号：US11766078
申请日：2007-06-20
申请人： Ahmadreza Hedayat , Hanqing Lou , Hang Jin
发明人： Ahmadreza Hedayat , Hanqing Lou , Hang Jin
IPC分类号： H03M13/25 , H03M13/07
CPC分类号： H03M13/413 , H03M13/09 , H03M13/41
摘要： The present invention discloses a method and system for improving the decoding efficiency in a wireless receiver to obtain a correct decoded data string. The method comprises generating an active state metric matrix of a receiving codeword, calculating a differential metric matrix pertinent to the active state metric matrix, identifying a maximum likelihood path and one or more alternative paths based on the differential metric matrix, deriving a first decoded data string corresponding to the maximum likelihood path, deriving a plurality of second decoded data strings corresponding to the one or more alternative paths, respectively examining the integrity of the first decoded data string; and examining the integrity of the plurality of second decoded data strings after the first decoded data string is determined erroneous, wherein the wireless receiver obtains the correct decoded data string.
摘要翻译：本发明公开了一种用于提高无线接收机中解码效率的方法和系统，以获得正确的解码数据串。该方法包括生成接收码字的活动状态度量矩阵，计算与活动状态度量矩阵相关的差分度量矩阵，基于差分度量矩阵识别最大似然路径和一个或多个备选路径，导出第一解码数据对应于最大似然路径，分别得出与分别检查第一解码数据串的完整性的一个或多个替代路径对应的多个第二解码数据串; 以及在第一解码数据串被确定为错误之后检查多个第二解码数据串的完整性，其中无线接收器获得正确的解码数据串。

33. 发明申请

US20080092024A1 System for Identifying Localized Burst Errors 有权
公开(公告)号：US20080092024A1
公开(公告)日：2008-04-17
申请号：US11743629
申请日：2007-05-02
申请人： Hanqing Lou , Ahmadreza Hedayat , Hang Jin
发明人： Hanqing Lou , Ahmadreza Hedayat , Hang Jin
IPC分类号： H03M13/17 , H03M13/25
CPC分类号： H03M13/4115 , H03M13/3738 , H03M13/6306 , H04L1/1809 , H04L1/1829
摘要： A system for detecting one or more localized burst errors in a receiving message comprised of a plurality of codewords. The system comprises a trellis code decoder for decoding a receiving message with a plurality of codewords and calculating one or more cumulative metrics of a maximum likelihood path and one or more alternative paths from the receiving message, an error detection code (EDC) decoder for detecting existence of one or more errors in the decoded receiving message received from the trellis decoder, and a localized burst error detector activated by the EDC decoder upon detecting the existence of one or more errors in the decoded receiving message to identify at least one corrupted codeword among the plurality of codewords using the one or more cumulative metrics of a maximum likelihood path and the one or more alternative paths, wherein the system requests the re-transmission of the corrupted codeword.

34. 发明申请

US20090268695A1 Method and System for Processing Reference Signals in OFDM Systems Using Transmission Time Interval Groupings 失效
标题翻译：使用传输时间间隔分组在OFDM系统中处理参考信号的方法和系统
公开(公告)号：US20090268695A1
公开(公告)日：2009-10-29
申请号：US12297064
申请日：2006-04-28
申请人： Shengjie Zhao , Hanqing Lou , Neelesh B. Mehta , Jinyun Zhang
发明人： Shengjie Zhao , Hanqing Lou , Neelesh B. Mehta , Jinyun Zhang
IPC分类号： H04W72/12 , H04L27/28 , H04J3/00
CPC分类号： H04L27/2613 , H04L5/0048 , H04L25/0232 , H04L25/0236 , H04L2025/03496
摘要： A method and system processes reference signals (115) for an uplink channel (103) between a transmitter, such as user equipment, and a receiver such as a base station, in a wireless communication network. A sequence of symbols to be transmitted is converted to a sequence of sub frames. The sequence of sub frames is grouped into groups of sub frames. Each sub frames includes at least two time-adjacent sub frames, and reference signals are inserted in a subset of the sub frames.
摘要翻译：方法和系统在无线通信网络中处理用于诸如用户设备的发射机之类的诸如基站的接收机之类的上行链路信道（103）的参考信号（115）。要发送的符号序列被转换成子帧序列。子帧的序列被分组成子帧组。每个子帧包括至少两个时间相邻的子帧，并且参考信号被插入子帧的子集中。

35. 发明授权

US07912115B2 Method and system for processing reference signals in OFDM systems using transmission time interval groupings 失效
标题翻译：使用传输时间间隔分组在OFDM系统中处理参考信号的方法和系统
公开(公告)号：US07912115B2
公开(公告)日：2011-03-22
申请号：US12297064
申请日：2006-04-28
申请人： Shengjie Zhao , Hanqing Lou , Neelesh B. Mehta , Jinyun Zhang
发明人： Shengjie Zhao , Hanqing Lou , Neelesh B. Mehta , Jinyun Zhang
IPC分类号： H04L5/16
CPC分类号： H04L27/2613 , H04L5/0048 , H04L25/0232 , H04L25/0236 , H04L2025/03496
摘要： A method and system processes reference signals (115) for an uplink channel (103) between a transmitter, such as user equipment, and a receiver such as a base station, in a wireless communication network. A sequence of symbols to be transmitted is converted to a sequence of sub frames. The sequence of sub frames is grouped into groups of sub frames. Each sub frames includes at least two time-adjacent sub frames, and reference signals are inserted in a subset of the sub frames.
摘要翻译：方法和系统在无线通信网络中处理用于诸如用户设备的发射机之类的诸如基站的接收机之类的上行链路信道（103）的参考信号（115）。要发送的符号序列被转换成子帧序列。子帧的序列被分组成子帧组。每个子帧包括至少两个时间相邻的子帧，并且参考信号被插入子帧的子集中。

36. 发明申请

US20080165882A1 Method and System for Resizing a MIMO Channel 有权
标题翻译：调整MIMO信道大小的方法和系统
公开(公告)号：US20080165882A1
公开(公告)日：2008-07-10
申请号：US11956280
申请日：2007-12-13
申请人： Ahmadreza Hedayat , Genyuan Wang , Mohammad Janani , Hanqing Lou
发明人： Ahmadreza Hedayat , Genyuan Wang , Mohammad Janani , Hanqing Lou
IPC分类号： H03M13/00 , H04L1/02
CPC分类号： H04L1/0625 , H04L1/0071
摘要： The present invention discloses a method for generating a signal stream in a multiple-input-multiple-output (MIMO) channel of a wireless communications system. The method comprises encoding at least one transmitting message into a first signal sequence, transforming the first signal sequence into a second and a third signal sequence by a first and a second predetermined rule, respectively, coupling the second signal sequence to a first antenna, coupling the third signal sequence to a second antenna, transmitting a signal stream comprising the first and second signal sequences to a mobile station.
摘要翻译：本发明公开了一种用于在无线通信系统的多输入多输出（MIMO）信道中生成信号流的方法。该方法包括将至少一个发送消息编码到第一信号序列中，分别通过第一和第二预定规则将第一信号序列转换成第二和第三信号序列，将第二信号序列耦合到第一天线，耦合将第三信号序列发送到第二天线，将包括第一和第二信号序列的信号流发送到移动台。

37. 发明申请

US20120327871A1 NON-LEGACY PREAMBLE FOR WIRELESS LOCAL AREA NETWORKS 审中-公开
标题翻译：无线本地区网络的非法前提
公开(公告)号：US20120327871A1
公开(公告)日：2012-12-27
申请号：US13530576
申请日：2012-06-22
申请人： Monisha Ghosh , Nirav B. Shah , Sudheer A. Grandhi , Ronald G. Murias , Guodong Zhang , Xiaofei Wang , Hanqing Lou , Robert L. Olesen
发明人： Monisha Ghosh , Nirav B. Shah , Sudheer A. Grandhi , Ronald G. Murias , Guodong Zhang , Xiaofei Wang , Hanqing Lou , Robert L. Olesen
IPC分类号： H04W72/04
CPC分类号： H04L5/0023 , H04L1/0025 , H04L1/0041 , H04L1/0059 , H04L1/0061 , H04L5/0048 , H04L5/0053 , H04L25/0226
摘要： Method and apparatus for transmission and reception of a Greenfield preamble are provided. In the method and apparatus, the Greenfield preamble may be a single user (SU) preamble or a multi user (MU) preamble. As an MU preamble, the Greenfield preamble includes a short training field (STF), a first long training field (LTF), a first signal (SIG) field, at least one additional LTF, and a second SIG field. Additionally, the Greenfield preamble may be utilized for efficient transmission and reception of control information to wireless devices, whereby the control information may be indicated using the STF, the first LTF, or the first or second SIG fields.
摘要翻译：提供了一种用于发送和接收绿田前置码的方法和装置。在该方法和装置中，绿田前置码可以是单用户（SU）前导码或多用户（MU）前导码。作为MU前导码，绿田前置码包括短训练场（STF），第一长训练场（LTF），第一信号（SIG）场，至少一个附加的LTF和第二SIG场。此外，绿田前置码可用于向无线设备的控制信息的有效发送和接收，由此可以使用STF，第一LTF或第一或第二SIG字段来指示控制信息。

38. 发明授权

US08374271B2 Method and system for resizing a MIMO channel 有权
标题翻译：调整MIMO信道大小的方法和系统
公开(公告)号：US08374271B2
公开(公告)日：2013-02-12
申请号：US11956280
申请日：2007-12-13
申请人： Ahmadreza Hedayat , Genyuan Wang , Mohammad Janani , Hanqing Lou
发明人： Ahmadreza Hedayat , Genyuan Wang , Mohammad Janani , Hanqing Lou
IPC分类号： H04B7/02
CPC分类号： H04L1/0625 , H04L1/0071
摘要： The present invention discloses a method for generating a signal stream in a multiple-input-multiple-output (MIMO) channel of a wireless communications system. The method comprises encoding at least one transmitting message into a first signal sequence, transforming the first signal sequence into a second and a third signal sequence by a first and a second predetermined rule, respectively, coupling the second signal sequence to a first antenna, coupling the third signal sequence to a second antenna, transmitting a signal stream comprising the first and second signal sequences to a mobile station.
摘要翻译：本发明公开了一种用于在无线通信系统的多输入多输出（MIMO）信道中生成信号流的方法。该方法包括将至少一个发送消息编码到第一信号序列中，分别通过第一和第二预定规则将第一信号序列转换成第二和第三信号序列，将第二信号序列耦合到第一天线，耦合将第三信号序列发送到第二天线，将包括第一和第二信号序列的信号流发送到移动台。

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