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11. 发明授权

US08867675B1 Low bandwidth PHY with frequency offset constraints 有权
标题翻译：具有频偏限制的低带宽PHY
公开(公告)号：US08867675B1
公开(公告)日：2014-10-21
申请号：US13550272
申请日：2012-07-16
申请人： Hongyuan Zhang
发明人： Hongyuan Zhang
IPC分类号： H04L27/06
CPC分类号： H04L27/2657 , H04L27/266 , H04L27/2671 , H04L27/2675 , H04L27/2682 , H04L27/2692
摘要： In a method for estimating a carrier frequency offset (CFO) between a transmitting device and a receiving device, a data unit is received. The data unit includes aperiodic sequence. An initial phase shift value of a phase shift between adjacent periods of the periodic sequence is generated, and a plurality of cross-correlations using at least one period of the periodic sequence are performed to generate a plurality of cross-correlation results. Each cross-correlation is performed using one of a plurality of possible actual phase shift values. An actual phase shift value is selected, based on the plurality of cross-correlation results, from the plurality of possible actual phase shift values. An estimate of the CFO is generated based at least in part on one of the initial phase shift value or the actual phase shift value.
摘要翻译：在用于估计发送设备和接收设备之间的载波频率偏移（CFO）的方法中，接收数据单元。数据单元包括非周期性序列。产生周期序列的相邻周期之间的相移的初始相移值，并且执行使用周期序列的至少一个周期的多个互相关，以产生多个互相关结果。使用多个可能的实际相移值之一来执行每个互相关。基于多个互相关结果，从多个可能的实际相移值中选择实际相移值。至少部分地基于初始相移值或实际相移值之一产生CFO的估计。

12. 发明授权

US08842614B2 Signaling for multi-dimension wireless resource allocation 有权
标题翻译：用于多维无线资源分配的信令
公开(公告)号：US08842614B2
公开(公告)日：2014-09-23
申请号：US12758709
申请日：2010-04-12
申请人： Yong Liu , Raja Banerjea , Hongyuan Zhang , Harish Ramamurthy
发明人： Yong Liu , Raja Banerjea , Hongyuan Zhang , Harish Ramamurthy
IPC分类号： H04W4/00 , H04W72/04 , H04L5/00
CPC分类号： H04W72/0406 , H04L5/0023 , H04L5/0053 , H04L5/0094 , H04W72/046
摘要： The present disclosure includes systems and techniques relating to wireless local area network devices. Systems and techniques include determining wireless resource allocations in a time domain, a spatial wireless channel domain, and a frequency domain to coordinate communications with wireless communication devices, generating a control frame that directs wireless communications based on at least a portion of the wireless resource allocations, and transmitting the control frame to the wireless communication devices. Determining wireless resource allocations can include determining frequency allocations in the time domain.
摘要翻译：本公开包括与无线局域网设备有关的系统和技术。系统和技术包括确定时域中的无线资源分配，空间无线信道域和频域以协调与无线通信设备的通信，生成基于无线资源分配的至少一部分来指导无线通信的控制帧，并且将控制帧发送到无线通信设备。确定无线资源分配可以包括确定时域中的频率分配。

13. 发明授权

US08824587B2 Systems and methods for compressed feedback and subcarrier grouping for beamforming 有权
标题翻译：用于波束成形的压缩反馈和子载波分组的系统和方法
公开(公告)号：US08824587B2
公开(公告)日：2014-09-02
申请号：US13490026
申请日：2012-06-06
申请人： Hongyuan Zhang , Salvador Iranzo Molinero
发明人： Hongyuan Zhang , Salvador Iranzo Molinero
IPC分类号： H04B7/02
CPC分类号： H04B7/0421 , H04B7/0617 , H04B7/063 , H04B7/0634 , H04B7/0663 , H04B7/0891
摘要： Methods and apparatuses are provided for providing compressed feedback channel state information for beamforming. A beam transmitted by a transmission source is received at a receiving device. The receiving device computes a channel state matrix H of the transmission channel based on the received beam. Using the channel state matrix H, the receiving device performs a singular value decomposition procedure that produces a steering matrix V. The singular value decomposition procedure generates a set of angles (θV, φ) from which the steering matrix V can be computed. The receiving device transmits the set of angles (θV, φ) to the transmitting device. From the set of angles (θV, φ), the transmitting device can compute the steering matrix V.
摘要翻译：提供了用于提供用于波束形成的压缩反馈信道状态信息的方法和装置。在接收装置处接收由发送源发送的波束。接收设备基于接收到的波束来计算传输信道的信道状态矩阵H. 使用信道状态矩阵H，接收设备执行产生导引矩阵V的奇异值分解过程。奇异值分解过程产生一组角度（“t”; V，＆phgr;）），从该角度可以计算导引矩阵V 。接收装置向发送装置发送一组角度（＆amp; t; V，＆phgr;）。从角度集（＆amp; t; V，＆phgr;），发射装置可以计算导引矩阵V.

14. 发明授权

US08724720B2 Methods and apparatus for WLAN transmission 有权
标题翻译： WLAN传输的方法和装置
公开(公告)号：US08724720B2
公开(公告)日：2014-05-13
申请号：US12846681
申请日：2010-07-29
申请人： Sudhir Srinivasa , Hongyuan Zhang , Rohit U. Nabar
发明人： Sudhir Srinivasa , Hongyuan Zhang , Rohit U. Nabar
IPC分类号： H04L27/28
CPC分类号： H04L1/0005 , H04L1/0016 , H04L27/2607 , H04L27/2608 , H04L27/34 , H04W84/12
摘要： In a method for generating a physical layer (PHY) data unit for transmission via a communication channel, a first set of modulation coding schemes (MCSs) and a second set of MCSs that correspond to a number of spatial streams and a number of encoders are provided. The first set of MCSs correspond to a first channel bandwidth and the second set of MCSs correspond to a second channel bandwidth, and the first set of MCSs is different than the second set of MCSs. An MCS is selected from the first set of MCSs when the PHY data unit is to be transmitted using a channel having the first channel bandwidth, and the MCS is selected from the second set of MCSs when the PHY data unit is to be transmitted using a channel having the second channel bandwidth. Information bits are encoded using the number of encoders and according to the selected MCS, and the encoded information bits are parsed into the number of spatial streams. The encoded information bits are modulated according to the MCS, and a plurality of OFDM symbols are formed based on the modulated encoded information bits.
摘要翻译：在用于生成经由通信信道进行传输的物理层（PHY）数据单元的方法中，与多个空间流和多个编码器相对应的第一组调制编码方案（MCS）和第二组MCS相对应，提供。第一组MCS对应于第一信道带宽，并且第二组MCS对应于第二信道带宽，并且第一组MCS不同于第二组MCS。当要使用具有第一信道带宽的信道来发送PHY数据单元时，从第一组MCS中选择MCS，并且当使用第一组MCS发送PHY数据单元时，从第二组MCS中选择MCS 信道具有第二信道带宽。使用编码器的数量并根据所选择的MCS对信息比特进行编码，并将编码的信息比特解析为空间流的数量。编码信息比特根据MCS进行调制，并且基于调制编码信息比特形成多个OFDM符号。

15. 发明授权

US08638875B1 Transmit beamforming systems and methods 有权
标题翻译：发射波束成形系统和方法
公开(公告)号：US08638875B1
公开(公告)日：2014-01-28
申请号：US12407345
申请日：2009-03-19
申请人： Hongyuan Zhang , Rohit U. Nabar
发明人： Hongyuan Zhang , Rohit U. Nabar
IPC分类号： H04L27/00 , H04L1/02 , H04K1/10 , H04B7/02
CPC分类号： H04B7/0689 , H04B7/0413 , H04B7/0617 , H04K1/10 , H04K3/224 , H04K2203/32 , H04L1/0003 , H04L5/0023 , H04L5/0044 , H04L5/0091 , H04L27/2626
摘要： A system includes a transmitting module, a mapping module, and an updating module. The transmitting module transmits a first set of data streams using N subcarriers when a wireless device operates in a first mode. The transmitting module transmits a second set of data streams using M subcarriers when the device operates in a second mode. N and M are integers greater than or equal to 1. The mapping module maps the first set of data streams to a first set of antennas of the device based on a first set of mapping values and maps the second set of data streams to a second set of antennas of the device based on a second set of mapping values. The updating module generates the second set of mapping values based on the first set of mapping values when the device transitions from the first mode to the second mode.
摘要翻译：系统包括发送模块，映射模块和更新模块。当无线设备以第一模式操作时，发送模块使用N个子载波发送第一组数据流。当设备以第二模式操作时，发射模块使用M个子载波发送第二组数据流。 N和M是大于或等于1的整数。映射模块基于第一组映射值将第一组数据流映射到设备的第一组天线，并将第二组数据流映射到第二组基于第二组映射值的设备的天线集合。当设备从第一模式转换到第二模式时，更新模块基于第一组映射值生成第二组映射值。

16. 发明申请

US20130259017A1 Physical Layer Frame Format for WLAN 有权
标题翻译： WLAN的物理层帧格式
公开(公告)号：US20130259017A1
公开(公告)日：2013-10-03
申请号：US13856277
申请日：2013-04-03
申请人： Hongyuan Zhang , Sudhir Srinivasa , Rohit U. Nabar , Raja Banerjea
发明人： Hongyuan Zhang , Sudhir Srinivasa , Rohit U. Nabar , Raja Banerjea
IPC分类号： H04W84/02
CPC分类号： H04L1/009 , H03M13/098 , H03M13/655 , H04L1/0041 , H04L1/0061 , H04L1/0072 , H04L1/0079 , H04L5/0007 , H04W84/02
摘要： In a method for generating a data unit conforming to a first communication protocol, a first field and a second field to be included in a preamble of the data unit are generated. The first field includes a first set of one or more information bits that indicate a duration of the data unit and is formatted such that the first field allows a receiver device that conforms to a second communication protocol to determine the duration of the data unit. The second field includes a second set of one or more information bits that indicate to a receiver device that conforms to the first communication protocol that the data unit conforms to the first communication protocol. The first field and the second field are modulated using a modulation scheme specified for a field corresponding to the first field and the second field, respectively, by the second communication protocol.
摘要翻译：在用于生成符合第一通信协议的数据单元的方法中，生成要包括在数据单元的前导码中的第一字段和第二字段。第一字段包括指示数据单元的持续时间并且被格式化的一个或多个信息比特的第一组，使得第一场允许符合第二通信协议的接收机设备确定数据单元的持续时间。第二字段包括一个或多个信息比特的第二组，其向符合第一通信协议的接收机设备指示数据单元符合第一通信协议。通过第二通信协议，分别使用针对对应于第一场和第二场的场指定的调制方案来调制第一场和第二场。

17. 发明授权

US08477813B2 Physical layer data unit format 有权
标题翻译：物理层数据单元格式
公开(公告)号：US08477813B2
公开(公告)日：2013-07-02
申请号：US12548205
申请日：2009-08-26
申请人： Hongyuan Zhang , Rohit U. Nabar , Manyuan Shen , Songping Wu , Hui-Ling Lou , Yong Liu
发明人： Hongyuan Zhang , Rohit U. Nabar , Manyuan Shen , Songping Wu , Hui-Ling Lou , Yong Liu
IPC分类号： H04J3/06
CPC分类号： H04W16/28 , H04L25/03343 , H04L27/2613 , H04L2025/03426 , H04L2025/03789 , H04L2025/03815
摘要： In a wireless communication system wherein communication devices exchange information utilizing data units that conform to a first format, a beamforming training (BFT) data unit that conforms to a second format is transmitted, wherein a length of the BFT data unit is shorter than lengths supported by the first format, wherein the BFT data unit is for transmitting PHY beamforming training information. Information to indicate the BFT data unit conforms to the second format is transmitted to a receiving device. The BFT data unit is generated according to the second format, wherein the BFT data unit includes BFT information elements. The BFT data unit is then transmitted to the receiving device.
摘要翻译：在其中通信设备利用符合第一格式的数据单元交换信息的无线通信系统中，发送符合第二格式的波束形成训练（BFT）数据单元，其中所述BFT数据单元的长度短于所支持的长度通过第一格式，其中BFT数据单元用于发送PHY波束形成训练信息。用于指示符合第二格式的BFT数据单元的信息被发送到接收设备。 BFT数据单元根据第二格式生成，其中BFT数据单元包括BFT信息元素。然后将BFT数据单元发送到接收设备。

18. 发明授权

US08428530B1 Increasing the robustness of channel estimates derived through sounding for WLAN 有权
公开(公告)号：US08428530B1
公开(公告)日：2013-04-23
申请号：US13346521
申请日：2012-01-09
申请人： Rohit U. Nabar , Hongyuan Zhang , Arul Durai Murugan Palanivelu
发明人： Rohit U. Nabar , Hongyuan Zhang , Arul Durai Murugan Palanivelu
IPC分类号： H04B1/26
CPC分类号： H04L25/0228 , H04B7/0413 , H04L5/0023 , H04L25/0204 , H04W72/085
摘要： A plurality of training signal sets are transmitted. Each training signal set includes information sufficient to determine a channel estimate corresponding to a communication channel from a first station to a second station. A refined channel estimate is determined based on reception of the plurality of training signal sets.

19. 发明授权

US08400968B2 Frame padding for wireless communications 有权
标题翻译：用于无线通信的帧填充
公开(公告)号：US08400968B2
公开(公告)日：2013-03-19
申请号：US12964584
申请日：2010-12-09
申请人： Yong Liu , Harish Ramamurthy , Ken Kinwah Ho , Raja Banerjea , Hongyuan Zhang
发明人： Yong Liu , Harish Ramamurthy , Ken Kinwah Ho , Raja Banerjea , Hongyuan Zhang
IPC分类号： H04W4/00 , H04L12/66 , H04J3/22 , H04J3/00
CPC分类号： H04W28/06 , H04L1/06 , H04L1/1614 , H04L1/1685 , H04L5/001 , H04L5/0023 , H04L5/0032 , H04L5/0037 , H04L5/0064 , H04L5/0094 , H04L69/324 , H04W72/042 , H04W84/12
摘要： Systems and techniques relating to wireless communications are described. A described technique includes obtaining data for a transmission to a wireless communication device(s), including one or more medium access control (MAC) data units that encapsulate data in a physical (PHY) frame, determining a length of a MAC layer pad based on a number of symbols associated with the PHY frame, including, in response to the length of the MAC layer pad being greater than zero, the MAC layer pad in the PHY frame after the one or more MAC data units, determining a length of a PHY layer pad based on remaining available bits in the PHY frame, including, in response to the length of the PHY layer pad being greater than zero, the PHY layer pad in the frame after the MAC layer pad, and transmitting the PHY frame to the wireless communication device(s).
摘要翻译：描述与无线通信相关的系统和技术。所描述的技术包括获得用于向无线通信设备的传输的数据，所述数据包括在物理（PHY）帧中封装数据的一个或多个介质访问控制（MAC）数据单元，基于MAC层的长度来确定在与所述PHY帧相关联的多个符号上，包括响应于所述MAC层焊盘的长度大于零的MAC层焊盘，在所述一个或多个MAC数据单元之后的所述PHY帧中确定所述MAC层的长度基于PHY帧中的剩余可用位的PHY层焊盘，包括响应于PHY层焊盘的长度大于零的PHY层焊盘在PHY层焊盘之后的帧中的PHY层焊盘，并将PHY帧发送到无线通信设备。

20. 发明授权

US08395997B2 Multi-channel wireless communications 有权
标题翻译：多通道无线通信
公开(公告)号：US08395997B2
公开(公告)日：2013-03-12
申请号：US12945805
申请日：2010-11-12
申请人： Raja Banerjea , Yong Liu , Hongyuan Zhang , Harish Ramamurthy , Sudhir Srinivasa
发明人： Raja Banerjea , Yong Liu , Hongyuan Zhang , Harish Ramamurthy , Sudhir Srinivasa
IPC分类号： G01R31/08
CPC分类号： H04W74/08 , H04L1/1614 , H04L1/1685 , H04W24/00 , H04W72/04 , H04W72/12 , H04W74/002 , H04W74/0816 , H04W84/12
摘要： Systems and techniques relating to wireless communications are described. A described technique includes monitoring wireless communication channels, including a first channel and a second channel, to produce a monitoring output, determining a first transmission period for the first channel, determining a second transmission period for the second channel, transmitting, based on the first transmission period, a first packet on the first channel to cause one or more wireless communication devices to set a transmission protection period for the first channel and the second channel based on a reception of the first packet, transmitting, based on the second transmission period, a second packet on the second channel, and monitoring, after the end of the first transmission period, for one or more acknowledgements. An end of the second transmission period can be aligned with an end of the first transmission period.
摘要翻译：描述与无线通信相关的系统和技术。所描述的技术包括监视包括第一信道和第二信道的无线通信信道，以产生监视输出，确定第一信道的第一传输周期，确定第二信道的第二传输周期，基于第一信道传输周期，第一信道上的第一分组，用于使一个或多个无线通信设备基于第一分组的接收来设置第一信道和第二信道的传输保护周期，基于第二传输周期，在第二信道上的第二分组，并且在第一传输周期结束之后监视一个或多个确认。第二传输周期的结束可以与第一传输周期的结束对齐。

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