专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明授权

US08295263B1 Triggering and transmitting sounding packets for wireless communications 有权
标题翻译：触发和发送用于无线通信的探测包
公开(公告)号：US08295263B1
公开(公告)日：2012-10-23
申请号：US12367119
申请日：2009-02-06
申请人： Chin Hung Chen , Ning Zhang
发明人： Chin Hung Chen , Ning Zhang
IPC分类号： H04J3/00
CPC分类号： H04L1/16 , H04B7/0417 , H04B7/0617 , H04L5/0023 , H04L25/0204 , H04L2025/03426 , H04W24/10
摘要： A process for determining when sounding packets are to be triggered and transmitted in a wireless beamforming system is disclosed. In one embodiment, a timer is programmably set to adapt to the operating environment. Whenever the timer elapses, a sounding packet is triggered and the timer resets. In another embodiment, the sounding packet is triggered by comparing measured correlations of channel characteristics against a programmable correlation threshold. If a measured correlation falls below the correlation threshold, this indicates that the channel has undergone a relatively large change. In response, a new sounding packet is triggered to update the beam steering matrix. Otherwise, the previous beam steering matrix is still used. Thereby, sounding packets are expeditiously triggered to keep the beam steering matrix updated with minimal impact to the over-the-air bandwidth.
摘要翻译：公开了一种用于确定何时在无线波束成形系统中触发和发送探测分组的过程。在一个实施例中，可编程地设置定时器以适应操作环境。无论什么时候，定时器都会触发，并且定时器复位。在另一个实施例中，通过比较测量的信道特性与可编程相关阈值的相关性来触发探测分组。如果测量的相关性低于相关阈值，则这表明信道已经经历了相对较大的变化。作为响应，触发新的探测包以更新波束导向矩阵。否则，仍然使用先前的波束导引矩阵。因此，迅速地触发探测分组以保持波束导向矩阵更新，同时对空中带宽的影响最小。

22. 发明授权

US08264407B2 Transmitter beamforming steering matrix processing and storage 有权
标题翻译：发射机波束成形导向矩阵处理和存储
公开(公告)号：US08264407B2
公开(公告)日：2012-09-11
申请号：US12901926
申请日：2010-10-11
申请人： Chi-Lin Su , Bemini Hennadige Janath Peiris , Ning Zhang
发明人： Chi-Lin Su , Bemini Hennadige Janath Peiris , Ning Zhang
IPC分类号： H01Q3/00
CPC分类号： H04B7/0617 , H01Q3/2605 , H04B7/043
摘要： A mechanism for processing beamforming steering matrices in a transceiver system. A plurality of beamforming steering matrices associated with a plurality of subcarriers of an RF signal received at the transceiver system are generated. The beamforming steering matrices are compressed and stored. The beamforming steering matrices may also be grouped or sub-sampled prior to being stored. The beamforming steering matrices are decompressed and ungrouped before being applied to data to be transmitted. Prior to ungrouping the beamforming steering matrices, a phase difference between corresponding beamforming steering vectors of consecutive beamforming steering matrices is determined. Phase rotation is performed on the corresponding beamforming steering vectors based on the determined phase difference associated with the corresponding beamforming steering vectors to improve phase continuity between consecutive beamforming steering matrices.
摘要翻译：一种在收发机系统中处理波束成形导向矩阵的机制。产生与在收发器系统处接收的RF信号的多个子载波相关联的多个波束成形导引矩阵。波束形成导向矩阵被压缩和存储。在存储之前，波束形成导引矩阵也可以被分组或子采样。波束成形导向矩阵在被应用于要发送的数据之前被解压缩和未分组。在取消分组波束成形导引矩阵之前，确定连续波束形成导引矩阵的相应波束成形导向矢量之间的相位差。基于与相应的波束形成导向矢量相关联的所确定的相位差，对相应的波束成形导向矢量执行相位旋转，以改善连续波束形成导引矩阵之间的相位连续性。

23. 发明授权

US08190962B1 System and method for dynamic maximal iteration 有权
标题翻译：动态最大迭代的系统和方法
公开(公告)号：US08190962B1
公开(公告)日：2012-05-29
申请号：US12346021
申请日：2008-12-30
申请人： Qifan Chen , Sameul Tao-Fei Ng , Ning Zhang
发明人： Qifan Chen , Sameul Tao-Fei Ng , Ning Zhang
IPC分类号： G06F11/00
CPC分类号： H04L1/005 , H03M13/09 , H03M13/1111 , H03M13/1125 , H03M13/2906 , H03M13/353 , H03M13/3707 , H03M13/41 , H03M13/658 , H04L1/0057
摘要： A system and method for decoding a low-density parity-check (LDPC) codeword. The method includes updating a portion of a plurality of variable nodes and performing a partial parity check based on the updated variable nodes. Based on the result of the partial parity check and an iteration condition, a determination is made as to whether to report a decoding result. The method further includes updating a plurality of check nodes and a parity check may be performed. Based on the parity check, a determination as to whether to report a decoding result is made. The iteration number may then be checked for a match with an iteration condition to determine whether to report a decoding result.
摘要翻译：一种用于解码低密度奇偶校验（LDPC）码字的系统和方法。该方法包括更新多个可变节点的一部分并且基于更新的变量节点执行部分奇偶校验。基于部分奇偶校验和迭代条件的结果，确定是否报告解码结果。该方法还包括更新多个校验节点，并且可以执行奇偶校验。基于奇偶校验，确定是否报告解码结果。然后可以检查迭代次数与迭代条件的匹配，以确定是否报告解码结果。

24. 发明申请

US20120109936A1 COST-EFFECTIVE DATA LAYOUT OPTIMIZATION OVER HETEROGENEOUS STORAGE CLASSES 审中-公开
标题翻译：成本有效的数据布局优化在异质存储类
公开(公告)号：US20120109936A1
公开(公告)日：2012-05-03
申请号：US13251217
申请日：2011-10-01
申请人： Ning Zhang , Junichi Tatemura , Vahit Hakan Hacigumus
发明人： Ning Zhang , Junichi Tatemura , Vahit Hakan Hacigumus
IPC分类号： G06F17/30 , G06F7/00
CPC分类号： G06F11/3447 , G06F11/34 , G06F11/3414 , G06F11/3419 , G06F11/3485 , G06F16/22 , G06F2201/80
摘要： A data layout recommendation system for heterogeneous storages is disclosed. The system has an SSD-aware Time-based query optimizer from the database optimizer. The query optimizer can detect the interaction between the query plans and underlying data layout and dynamically update the cheapest query plan and response time of a query based on the changing data layout. The system also includes a module utilizing the query estimates from the backend to find a cost-effective data layout as well as the capacity and SLAs constrains are guaranteed.
摘要翻译：公开了一种用于异构存储的数据布局推荐系统。该系统具有来自数据库优化器的基于SSD的基于时间的查询优化器。查询优化器可以检测查询计划和底层数据布局之间的交互，并根据更改的数据布局动态更新查询的最便宜的查询计划和响应时间。该系统还包括利用来自后端的查询估计的模块来找到具有成本效益的数据布局以及保证容量和SLA约束。

25. 发明申请

US20120063335A1 PACKET IDENTIFICATION FOR POWER SAVING IN WIRELESS COMMUNICATION NETWORKS 有权
标题翻译：用于无线通信网络节电的分组识别
公开(公告)号：US20120063335A1
公开(公告)日：2012-03-15
申请号：US12957077
申请日：2010-11-30
申请人： James S. Cho , Youhan Kim , Ning Zhang , Shiwei Zhao
发明人： James S. Cho , Youhan Kim , Ning Zhang , Shiwei Zhao
IPC分类号： H04W60/00 , H04W24/00 , H04W4/06
CPC分类号： H04W52/0206 , H04W8/186 , H04W52/0229 , H04W60/00 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/162 , Y02D70/22
摘要： A network coordinator can assign an association identifier (AID) and/or a group identifier (GID) to identify a client station to which a packet is to be transmitted and to enable the client station to determine whether to receive an incoming packet. The network coordinator can randomly generate a base AID that is representative of the network coordinator and can assign at least one AID to client stations to minimize the probability of client stations associated with proximate network coordinators being assigned the same AIDs. The network coordinator can also randomly assign at least one GID to a group of client stations to minimize the probability of groups of client stations associated with the proximate network coordinators being assigned the same GID. The client station can analyze indications of a received AID and/or received GID to determine whether to receive the packet or whether to switch to an inactive power state.
摘要翻译：网络协调器可以分配关联标识符（AID）和/或组标识符（GID）来标识要向其发送分组的客户端站，并使客户端站能够确定是否接收输入分组。网络协调器可以随机生成代表网络协调器的基本AID，并且可以向客户站分配至少一个AID以最小化与被分配相同AID的邻近网络协调器相关联的客户站的概率。网络协调器还可以随机地向一组客户端站分配至少一个GID，以最小化与被分配相同GID的邻近网络协调器相关联的客户端站组的概率。客户端站可以分析所接收的AID和/或接收到的GID的指示，以确定是接收分组还是切换到无效功率状态。

26. 发明授权

US08068562B1 Signal processing for multiple chains including barker code correlation and auto-correlation 有权
标题翻译：包括巴克码相关和自相关的多个链的信号处理
公开(公告)号：US08068562B1
公开(公告)日：2011-11-29
申请号：US11927574
申请日：2007-10-29
申请人： Ning Zhang , Alan Jauh , Bianca Chen
发明人： Ning Zhang , Alan Jauh , Bianca Chen
IPC分类号： H04L27/14 , H04L27/22
CPC分类号： H04B1/7115
摘要： A method of processing a signal in a wireless network including multiple chains is provided. This method can include receiving the signal in a receiver and, for each chain, performing a Barker correlation on the signal to generate a Barker correlated signal. At this point, an autocorrelation can be performed on the Barker correlated signal to generate an autocorrelated signal. The autocorrelated signals from the multiple chains can be summed to generate a summed output. Additional processing, e.g. at least one of CCK weak signal detection, peak selection in a rake receiver, frequency estimation, and differential decoding, can then be performed based on the summed output.
摘要翻译：提供一种在包括多个链的无线网络中处理信号的方法。该方法可以包括在接收机中接收信号，并且对于每个链，对该信号执行Barker相关以产生Barker相关信号。此时，可以对巴克相关信号执行自相关以产生自相关信号。来自多个链的自相关信号可以相加以产生相加的输出。附加处理，例如然后可以基于求和输出来执行CCK弱信号检测，瑞克接收机中的峰值选择，频率估计和差分解码中的至少一个。

27. 发明授权

US07907080B1 Radar detection for wireless communication devices 有权
标题翻译：无线通信设备的雷达检测
公开(公告)号：US07907080B1
公开(公告)日：2011-03-15
申请号：US12939131
申请日：2010-11-03
申请人： Ning Zhang , Richard Mosko
发明人： Ning Zhang , Richard Mosko
IPC分类号： G01S7/285
CPC分类号： G01S7/021 , H04B1/18 , H04K3/226 , H04K3/822 , H04K2203/18
摘要： A method and apparatus for detecting radar signals in single and multiple (extension) channel wireless network frequencies uses spectral and DC analysis. Spectral images produced through a Fast Fourier transform may be captured and analyzed to determine if any radar signals may be present within the selected wireless network frequencies. A plurality of spectral images may also be analyzed to determine if frequency shifting radar signals are present as well. DC analysis of the power contained at the wireless carrier frequencies may detect radar signals that may be centered near those frequencies.
摘要翻译：用于在单个和多个（扩展）信道无线网络频率中检测雷达信号的方法和装置使用频谱和DC分析。可以捕获并分析通过快速傅立叶变换产生的光谱图像，以确定在所选择的无线网络频率内是否存在任何雷达信号。还可以分析多个光谱图像以确定是否存在频移雷达信号。在无线载波频率下包含的功率的DC分析可以检测可能在这些频率附近居中的雷达信号。

28. 发明授权

US07848219B1 Radar detection for wireless communication devices 有权
标题翻译：无线通信设备的雷达检测
公开(公告)号：US07848219B1
公开(公告)日：2010-12-07
申请号：US12187239
申请日：2008-08-06
申请人： Ning Zhang , Rich Mosko
发明人： Ning Zhang , Rich Mosko
IPC分类号： H04J11/00
CPC分类号： G01S7/021 , H04B1/18 , H04K3/226 , H04K3/822 , H04K2203/18
摘要： A method and apparatus for detecting radar signals in single and multiple (extension) channel wireless network frequencies uses spectral and DC analysis. Spectral images produced through a Fast Fourier transform may be captured and analyzed to determine if any radar signals may be present within the selected wireless network frequencies. A plurality of spectral images may also be analyzed to determine if frequency shifting radar signals are present as well. DC analysis of the power contained at the wireless carrier frequencies may detect radar signals that may be centered near those frequencies.
摘要翻译：用于在单个和多个（扩展）信道无线网络频率中检测雷达信号的方法和装置使用频谱和DC分析。可以捕获并分析通过快速傅立叶变换产生的光谱图像，以确定在所选择的无线网络频率内是否存在任何雷达信号。还可以分析多个光谱图像以确定是否存在频移雷达信号。在无线载波频率下包含的功率的DC分析可以检测可能在这些频率附近居中的雷达信号。

29. 发明申请

US20090299989A1 DETERMINING PREDICATE SELECTIVITY IN QUERY COSTING 有权
标题翻译：确定查询成本中的预测选择
公开(公告)号：US20090299989A1
公开(公告)日：2009-12-03
申请号：US12127971
申请日：2008-05-28
申请人： Ning Zhang , Thomas Baby , Nipun Agarwal
发明人： Ning Zhang , Thomas Baby , Nipun Agarwal
IPC分类号： G06F17/30
CPC分类号： G06F17/30469
摘要： Techniques for estimating a cost of executing a query are provided. A query includes multiple predicates, each of which is associated with a selectivity value that indicates a percentage of input that satisfies the condition of the corresponding predicate. The selectivity values are used to determine an estimated cost of executing the query. In one technique, a group of multiple predicates of a query are treated as a single predicate. Thus, a single selectivity value, rather than multiple selectivity values, is determined for that group. In a related technique, instead of determining a selectivity value of a predicate in isolation with respect to other predicates of a query, the selectivity value of a set of one or more predicates in a query is generated based on other predicates in the query.
摘要翻译：提供了用于估计执行查询的成本的技术。查询包括多个谓词，每个谓词与选择性值相关联，该选择性值指示满足相应谓词条件的输入百分比。选择性值用于确定执行查询的估计成本。在一种技术中，一组查询的多个谓词被视为单个谓词。因此，为该组确定单个选择性值，而不是多个选择性值。在相关技术中，代替相对于查询的其他谓词来隔离地确定谓词的选择性值，而不是基于查询中的其他谓词生成查询中的一个或多个谓词的选择性值。

30. 发明授权

US07356709B2 Systems and methods for deterring software piracy in a volume license environment 有权
标题翻译：用于在卷许可证环境中阻止软件盗版的系统和方法
公开(公告)号：US07356709B2
公开(公告)日：2008-04-08
申请号：US10356225
申请日：2003-01-31
申请人： Caglar Gunyakti , Kristjan E. Hatlelid , Ning Zhang , Xiaoxi Tan
发明人： Caglar Gunyakti , Kristjan E. Hatlelid , Ning Zhang , Xiaoxi Tan
IPC分类号： H04F11/30 , H04K1/00 , G06F15/16 , G06F11/30 , G06F7/04
CPC分类号： G06F21/121
摘要： A unique volume license key (VLK) is provided to a volume license holder. A signed file containing the VLK and the data derived from volume license holder's submitted computing environment information is provided to the volume license holder along with the licensed software. The license file is stored in a central location, such as on an installation server, or locally on client machines, in a rather large file of any type. Upon logon, the license file is read, the data authenticated and the system is activated. If license data cannot be authenticated, a connected system either fully functions in grace period or run in reduced functionality mode until authentication succeeds. If the system is disconnected, the system is functional only with disconnected features until it joins a network again. In a completely off-line installation, the license file is generated by the volume license holder using software vendor assigned specific VLK and software vendor provided security hardware device. The distribution methods of software package, the VLK, and the license file can be flexible, including, but not limited to, single or multiple media.
摘要翻译：向卷许可证持有者提供了唯一的卷许可证密钥（VLK）。包含VLK的签名文件和从卷许可证持有者提交的计算环境信息导出的数据与许可软件一起提供给卷许可证持有者。许可证文件存储在中央位置，例如安装服务器上，或存储在客户端计算机上的本地的任何类型的相当大的文件中。登录后，许可证文件被读取，数据被认证并且系统被激活。如果许可证数据无法验证，则连接的系统可以在宽限期内完全运行，也可以以缩减的功能模式运行，直到认证成功。如果系统断开连接，系统仅在断开功能时才起作用，直到它再次加入网络。在完全离线安装中，许可证文件由卷许可证持有者使用软件供应商分配的特定VLK和软件供应商提供的安全硬件设备生成。软件包，VLK和许可证文件的分发方法可以是灵活的，包括但不限于单个或多个媒体。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式