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. 发明申请

US20120045003A1 COMMUNICATION STATION AND METHOD FOR EFFICIENTLY PROVIDING CHANNEL FEEDBACK FOR MIMO COMMUNICATIONS 有权
标题翻译：通信站和有效提供MIMO通信信道反馈的方法
公开(公告)号：US20120045003A1
公开(公告)日：2012-02-23
申请号：US12861685
申请日：2010-08-23
申请人： Qinghua Li , Huaning Niu , Xintian E. Lin , Yuan Zhu , Thomas J. Kenney , Eldad Perahia , Honggang Li
发明人： Qinghua Li , Huaning Niu , Xintian E. Lin , Yuan Zhu , Thomas J. Kenney , Eldad Perahia , Honggang Li
IPC分类号： H04L27/28
CPC分类号： H04L25/03955 , H04B7/024 , H04B7/0452 , H04B7/0478 , H04B7/0482 , H04B7/0639 , H04B7/0641 , H04B7/066 , H04L2025/03414
摘要： Embodiments of a communication station and methods for efficiently providing channel feedback for MIMO communications over an OFDM channel are generally described herein. In some embodiments, receiving stations may perform a recursive differential quantization of channel information across time and/or frequency to generate quantized differential channel feedback. The quantized differential channel feedback from each receiving station may be used by a transmitting station to precode MIMO transmissions to one or more of the receiving stations. The quantized differential channel feedback may be either a quantized differential channel matrix or a quantized differential beamforming matrix.
摘要翻译：通常在本文中描述通信站的实施例和用于在OFDM信道上有效地提供用于MIMO通信的信道反馈的方法。在一些实施例中，接收站可以在时间和/或频率上执行信道信息的递归差分量化，以产生量化的差分信道反馈。来自每个接收站的量化的差分信道反馈可以由发射站用于对接收站中的一个或多个的MIMO传输进行预编码。量化的差分信道反馈可以是量化差分信道矩阵或量化差分波束形成矩阵。

22. 发明申请

US20150195028A1 COMMUNICATION OVERHEAD REDUCTION APPARATUS, SYSTEMS, AND METHODS 有权
标题翻译：通信覆盖减少装置，系统和方法
公开(公告)号：US20150195028A1
公开(公告)日：2015-07-09
申请号：US14602416
申请日：2015-01-22
申请人： Qinghua Li , Xintian E. Lin
发明人： Qinghua Li , Xintian E. Lin
IPC分类号： H04B7/06 , H04W56/00 , H04W52/42 , H04B7/04
CPC分类号： H04B7/0684 , H04B7/0417 , H04B7/0697 , H04L5/0046 , H04W52/42 , H04W56/001 , H04W84/12 , H04W84/18
摘要： An apparatus and a system, as well as a method and article, may operate to transmit a first number of training symbols corresponding to a first number of communication chains to solicit a response including a second number of training symbols corresponding to a second number of communication chains. The first and second number of communication chains may form a portion of a multiple-input, multiple-output (MIMO) system.
摘要翻译：装置和系统以及方法和文章可以操作以发送对应于第一数量的通信链的第一数量的训练符号以征求包括对应于第二数量的通信的第二数量的训练符号的响应链条第一和第二数量的通信链可以形成多输入多输出（MIMO）系统的一部分。

23. 发明授权

US08774145B2 Techniques to determine user presence 有权
标题翻译：确定用户存在的技术
公开(公告)号：US08774145B2
公开(公告)日：2014-07-08
申请号：US13078354
申请日：2011-04-01
申请人： Xintian E. Lin , Qinghua Li , Songnan Yang , Jie Gao , Yongfang Guo , Ulun Karacaoglu , Kristoffer D. Fleming
发明人： Xintian E. Lin , Qinghua Li , Songnan Yang , Jie Gao , Yongfang Guo , Ulun Karacaoglu , Kristoffer D. Fleming
IPC分类号： H04W4/00 , H04B17/00 , H04L29/08 , H04W4/20 , H04W52/28
CPC分类号： H04B17/0072 , H04B17/27 , H04L67/24 , H04W4/21 , H04W52/283
摘要： An embodiment of the present invention provides a method of detecting user presence, comprising registering a client associated with the user on a host associated with the user and setting up a wireless communication pairing, wherein while setting up the pairing, the client measures the host wireless communication power and uses it as calibration threshold for distance detection, and wherein the client measures a beacon power of the host radio and when the beacon power is above a threshold, the client is determined to be proximate to the host.
摘要翻译：本发明的实施例提供了一种检测用户存在的方法，包括将与用户相关联的客户端登记在与用户相关联的主机上并建立无线通信配对，其中在建立配对的同时，客户端测量主机无线通信功率并将其用作距离检测的校准阈值，并且其中客户端测量主机无线电的信标功率，并且当信标功率高于阈值时，客户端被确定为接近主机。

24. 发明申请

US20140153662A1 DOWNLINK TRANSMIT BEAMFORMING 审中-公开
标题翻译：下行发射波束形成
公开(公告)号：US20140153662A1
公开(公告)日：2014-06-05
申请号：US14175381
申请日：2014-02-07
申请人： Xintian E. Lin , Qinghua Li
发明人： Xintian E. Lin , Qinghua Li
IPC分类号： H04L1/06 , H04B7/04
CPC分类号： H04B7/0413 , H04B7/0617 , H04B7/0643 , H04L1/0681
摘要： A wireless network access point can operate as a closed loop MIMO device when communicating with a station that is operating as an open loop MIMO device. Transmit/receive chains in the access point are calibrated to support aggregate channel reciprocity.
摘要翻译：当与作为开环MIMO设备操作的站通信时，无线网络接入点可以作为闭环MIMO设备操作。校准接入点中的发送/接收链以支持聚合信道互易。

25. 发明授权

US08743857B2 Recursive reduction of channel state feedback 有权
标题翻译：通道状态反馈递归减少
公开(公告)号：US08743857B2
公开(公告)日：2014-06-03
申请号：US13532969
申请日：2012-06-26
申请人： Qinghua Li , Xintian E. Lin
发明人： Qinghua Li , Xintian E. Lin
IPC分类号： H04B7/216 , H04B7/06 , H04B7/04
CPC分类号： H04B7/0663 , H04B7/0417 , H04B7/0639
摘要： A method and a system that multiplies a beamforming matrix by a unitary matrix that does not change the subspace of the beamforming matrix for form a converted matrix having a lower left triangle of zeros. A first column vector having a fewest number of elements of the converted matrix is quantized using a codebook and represented by a first codebook index. A Householder matrix is determined from the quantized first column vector and the converted matrix is multiplied by the Householder matrix. Quantizing, determining a Householder matrix from further column vectors of the converted matrix using a codebook and representing each respective column vector by further corresponding codebook index, and multiplying the converted matrix on the left by the determined Householder matrix for each respective column vector are recursively repeated. The first codebook index and further codebook indices are transmitted to a remote station for use in beamforming.
摘要翻译：一种方法和系统，其将波束形成矩阵乘以不改变波束形成矩阵的子空间的单一矩阵，以形成具有零的左下三角形的转换矩阵。具有转换矩阵的元素数目最少的第一列矢量使用码本量化，并由第一码本索引表示。从量化的第一列向量确定一个Householder矩阵，并将该矩阵乘以Householder矩阵。使用码本从转换矩阵的其他列向量中量化，确定房主矩阵，并通过进一步的相应码本索引表示每个相应的列向量，并且将每个相应列向量的左侧的转换矩阵乘以所确定的Householder矩阵递归地重复。第一码本索引和其他码本索引被发送到远程站以用于波束成形。

26. 发明授权

US08650448B2 Retransmission techniques in wireless networks 有权
标题翻译：无线网络中的重传技术
公开(公告)号：US08650448B2
公开(公告)日：2014-02-11
申请号：US12587842
申请日：2009-10-13
申请人： Qinghua Li , Ozgur Oyman , Xintian E. Lin
发明人： Qinghua Li , Ozgur Oyman , Xintian E. Lin
IPC分类号： G08C25/02
CPC分类号： H04L1/0015 , H04L1/0026 , H04L1/1864
摘要： Retransmission techniques are disclosed. These techniques may be used in networks employing contention-based access schemes, such as CSMA. For instance, a device may receive a corrupted packet from a transmitting device, and determine a cause of the corruption. When the determined cause of the corruption is an in-network packet collision, the device allows the transmitting device to send a retransmission of the packet in accordance with a contention-based access scheme. However, when the determined cause of the corruption is other than an in-network packet collision, the device provides retransmission assistance to the transmitting device. This retransmission assistance may include a channel reservation for a retransmission, and/or one or more link adaptation suggestions for the transmitting device.
摘要翻译：披露重传技术。这些技术可以用于采用基于争用的接入方案的网络，例如CSMA。例如，设备可以从发送设备接收损坏的分组，并且确定损坏的原因。当所确定的损坏的原因是网络内分组冲突时，设备允许发送设备根据基于竞争的接入方案发送分组的重传。然而，当所确定的损坏的原因不是网内分组冲突时，设备向发送设备提供重传协助。该重传辅助可以包括用于重发的信道预留和/或用于发送设备的一个或多个链路适配建议。

27. 发明授权

US08442458B2 Techniques for beamforming using predicted channel state information 有权
标题翻译：使用预测信道状态信息的波束成形技术
公开(公告)号：US08442458B2
公开(公告)日：2013-05-14
申请号：US12908637
申请日：2010-10-20
申请人： Qinghua Li , Xintian E. Lin
发明人： Qinghua Li , Xintian E. Lin
IPC分类号： H04B17/00 , H04B1/00 , H04B1/02 , H04J3/08
CPC分类号： H04B17/373 , H04B7/0408 , H04B7/0413 , H04B7/0617 , H04B7/0626 , H04B7/0854 , H04B17/14 , H04L1/0003 , H04L1/0009 , H04L1/0019 , H04L1/0026 , H04L1/0032 , H04L1/0034 , H04L1/06 , H04L25/0206 , H04L25/0224 , H04L25/023
摘要： A system, apparatus, method and article to manage channel prediction for a wireless communication system are described. The apparatus may include a media access control processor to perform channel prediction, and a transceiver to communicate information using the channel prediction. Other embodiments are described and claimed.
摘要翻译：描述了一种用于管理无线通信系统的信道预测的系统，装置，方法和文章。该装置可以包括用于执行信道预测的媒体访问控制处理器，以及使用信道预测来传送信息的收发器。描述和要求保护其他实施例。

28. 发明申请

US20120250539A1 TECHNIQUES TO DETERMINE USER PRESENCE 有权
标题翻译：确定用户存在的技术
公开(公告)号：US20120250539A1
公开(公告)日：2012-10-04
申请号：US13078354
申请日：2011-04-01
申请人： Xintian E. Lin , Qinghua Li , Songnan Yang , Jie Gao , Yongfang Guo , Ulun Karacaoglu , Kristoffer D. Fleming
发明人： Xintian E. Lin , Qinghua Li , Songnan Yang , Jie Gao , Yongfang Guo , Ulun Karacaoglu , Kristoffer D. Fleming
IPC分类号： H04B17/00 , H04B7/00 , H04B5/00 , G06F1/32 , H04W24/00
CPC分类号： H04B17/0072 , H04B17/27 , H04L67/24 , H04W4/21 , H04W52/283
摘要： An embodiment of the present invention provides a method of detecting user presence, comprising registering a client associated with the user on a host associated with the user and setting up a wireless communication pairing, wherein while setting up the pairing, the client measures the host wireless communication power and uses it as calibration threshold for distance detection, and wherein the client measures a beacon power of the host radio and when the beacon power is above a threshold, the client is determined to be proximate to the host.
摘要翻译：本发明的实施例提供了一种检测用户存在的方法，包括将与用户相关联的客户端登记在与用户相关联的主机上并建立无线通信配对，其中在建立配对的同时，客户端测量主机无线通信功率并将其用作距离检测的校准阈值，并且其中客户端测量主机无线电的信标功率，并且当信标功率高于阈值时，客户端被确定为接近主机。

29. 发明授权

US08068554B2 Multiple input, multiple output wireless communication system, associated methods and data structures 有权
标题翻译：多输入，多输出无线通信系统，相关方法和数据结构
公开(公告)号：US08068554B2
公开(公告)日：2011-11-29
申请号：US12715317
申请日：2010-03-01
申请人： Xintian E. Lin , Qinghua Li , Keith A. Holt , Raymond Blackham , Minnie Ho
发明人： Xintian E. Lin , Qinghua Li , Keith A. Holt , Raymond Blackham , Minnie Ho
IPC分类号： H04B7/02
CPC分类号： H04B7/0478 , H04B7/0417 , H04B7/0482 , H04B7/0634 , H04B7/0639 , H04B7/0641 , H04B7/065 , H04B7/0663
摘要： Briefly, in accordance with one or more embodiments, in response to receiving a wireless communication signal, a non-uniform codebook is generated based at least in part on one or more characteristics of the received wireless communication signal for quantization and communication back to a source of the received signal. The non-uniform codebook may be generated by selecting a suitable uniform codebook based at least in part on the one or more characteristics of the received wireless communication signal, and supplementing the uniform codebook with additional codewords to generate the non-uniform codebook.
摘要翻译：简而言之，根据一个或多个实施例，响应于接收到无线通信信号，至少部分地基于所接收的无线通信信号的一个或多个特性来产生非均匀码本，用于量化和返回到源的接收信号。可以通过至少部分地基于所接收的无线通信信号的一个或多个特性选择合适的统一码本来生成非均匀码本，并且用附加码字来补充统一码本以生成非均匀码本。

30. 发明授权

US07847752B2 Switching schemes for multiple antennas 有权
标题翻译：多个天线的切换方案
公开(公告)号：US07847752B2
公开(公告)日：2010-12-07
申请号：US12545496
申请日：2009-08-21
申请人： Qinghua Li , Xintian E. Lin
发明人： Qinghua Li , Xintian E. Lin
IPC分类号： H01Q21/00
CPC分类号： H04B7/0811
摘要： Signals from multiple antennas are evaluated in a wireless device having one receiver chain and the antenna receiving the highest quality signals is selected. The signal quality from the multiple antennas may be evaluated using the short symbols in the preamble or the beacon signals and the antennas dynamically selected to improve the performance of the wireless communications device.
摘要翻译：在具有一个接收机链的无线设备中评估来自多个天线的信号，并且选择接收最高质量信号的天线。可以使用前导码中的短符号或动态选择的信标信号和天线来评估来自多个天线的信号质量，以改善无线通信设备的性能。

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