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1. 发明申请

WO2010027865A2 BEAMFORMING BY SECTOR SWEEPING 审中-公开
标题翻译：按部门划分的波束形成
公开(公告)号：WO2010027865A2
公开(公告)日：2010-03-11
申请号：PCT/US2009055071
申请日：2009-08-26
申请人： MARVELL WORLD TRADE LTD , ZHANG HONGYUAN , NABAR ROHIT U , SHEN MANYUAN , WU SONGPING , LOU HUI-LING , LIU YONG
发明人： ZHANG HONGYUAN , NABAR ROHIT U , SHEN MANYUAN , WU SONGPING , LOU HUI-LING , LIU YONG
IPC分类号： H04B7/06 , H04B7/08
CPC分类号： H04B1/04 , H04B7/0617 , H04B7/063 , H04B7/0632 , H04B7/0684 , H04B7/0695 , H04B7/0848 , H04B7/086 , H04B7/088
摘要： A method for beamforming in a communication system includes receiving a first plurality of training data units via a plurality of antennas, applying a different steering vector as each training data unit is received, generating a first plurality of quality indicators based on the first plurality of received training data units, such that each of the first plurality of quality indicators corresponds to a respective one of the first plurality of received training data units, and selecting a steering vector based on the different steering vectors and the first plurality of quality indicators.
摘要翻译：一种用于通信系统中的波束形成的方法包括经由多个天线接收第一多个训练数据单元，当接收到每个训练数据单元时应用不同的导引向量，基于接收的第一多个生成第一多个质量指示符训练数据单元，使得第一多个质量指示符中的每一个对应于第一多个接收到的训练数据单元中的相应一个;以及基于不同导向矢量和第一多个质量指示符选择导向矢量。

2. 发明申请

WO2010027864A2 PHYSICAL LAYER DATA UNIT FORMAT 审中-公开
标题翻译：物理层数据单元格式
公开(公告)号：WO2010027864A2
公开(公告)日：2010-03-11
申请号：PCT/US2009055069
申请日：2009-08-26
申请人： MARVELL WORLD TRADE LTD , ZHANG HONGYUAN , NABAR ROHIT U , SHEN MANYUAN , WU SONGPING , LOU HUI-LING , LIU YONG
发明人： ZHANG HONGYUAN , NABAR ROHIT U , SHEN MANYUAN , WU SONGPING , LOU HUI-LING , LIU YONG
IPC分类号： H04L25/03
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。

3. 发明申请

WO2009012448A3 WIRELESS NETWORK WITH SIMULTANEOUS UPLINK TRANSMISSION OF INDEPENDENT DATA FROM MULTIPLE CLIENT STATIONS 审中-公开
标题翻译：无线网络同时上传从多个客户端的独立数据传输
公开(公告)号：WO2009012448A3
公开(公告)日：2009-05-14
申请号：PCT/US2008070469
申请日：2008-07-18
申请人： MARVELL WORLD TRADE LTD , NABAR ROHIT U , ZHANG HONGYUAN , LOU HUI-LING
发明人： NABAR ROHIT U , ZHANG HONGYUAN , LOU HUI-LING
IPC分类号： H04B7/26
CPC分类号： H04L5/0055 , H04B7/2618 , H04L5/0005 , H04W52/04 , H04W72/042 , H04W72/0446 , H04W88/08
摘要： A wireless network comprises R client stations that respectively generate simultaneous uplink transmission (SUT) data, where R is an integer greater than one. An access point (AP) receives SUT data from each of the R client stations during an SUT period.
摘要翻译：无线网络包括分别产生同时上行链路传输（SUT）数据的R个客户站，其中R是大于1的整数。接入点（AP）在SUT期间从每个R客户端接收SUT数据。

4. 发明申请

WO2009012446A3 ACCESS POINT WITH SIMULTANEOUS DOWNLINK TRANSMISSION OF INDEPENDENT DATA FOR MULTIPLE CLIENT STATIONS 审中-公开
标题翻译：多个客户端的独立数据同步下行链路传输的接入点
公开(公告)号：WO2009012446A3
公开(公告)日：2009-03-05
申请号：PCT/US2008070466
申请日：2008-07-18
申请人： MARVELL WORLD TRADE LTD , NABAR ROHIT U , ZHANG HONGYUAN , LOU HUI-LING
发明人： NABAR ROHIT U , ZHANG HONGYUAN , LOU HUI-LING
IPC分类号： H04B7/06 , H04B7/04
CPC分类号： H04W72/0446 , H04B7/0452 , H04B7/0697 , H04L5/006 , H04L65/608 , H04W28/0215 , H04W72/048 , H04W74/06
摘要： A wireless network device comprises R modulation modules that receive R independent data streams, that modulate the R independent data streams, and that apply a multiplexing matrix to generate M modulated and multiplexed data streams, respectively, where R and M are integers greater than one. M summing modules sum portions of each of the M modulated and multiplexed data streams to generate M transmit data streams. M transmitters simultaneously transmit the M transmit data streams during a simultaneous downlink transmission (SDT) period.
摘要翻译：无线网络设备包括R调制模块，R调制模块接收R个独立数据流，调制R独立数据流，并且应用复用矩阵分别产生M个调制和复用的数据流，其中R和M是大于1的整数。 M个求和模块将M个调制和多路复用数据流中的每一个的部分相加以产生M个发送数据流。 M发射机在同时的下行链路传输（SDT）周期期间同时传输M个发送数据流。

5. 发明申请

WO2009099949A2 CHANNEL SOUNDING AND ESTIMATION STRATEGIES FOR ANTENNA SELECTION IN MIMO SYSTEMS 审中-公开
标题翻译： MIMO系统中天线选择的信道声音和估计策略
公开(公告)号：WO2009099949A2
公开(公告)日：2009-08-13
申请号：PCT/US2009032659
申请日：2009-01-30
申请人： MARVELL WORLD TRADE LTD , ZHANG HONGYUAN , NABAR ROHIT U , LOC PETER
发明人： ZHANG HONGYUAN , NABAR ROHIT U , LOC PETER
IPC分类号： H04L25/02
CPC分类号： H04B7/0426 , H04B7/0417 , H04B7/0443 , H04B7/0447 , H04B7/0632 , H04B7/0691 , H04B7/0817 , H04B7/0874 , H04L25/0202 , H04L25/0226 , H04L25/0228 , H04L27/2647 , H04W52/42
摘要： Techniques and devices for antenna selection in a multiple-input-multiple- output (MIMO) system, in which communication is between a transmitter having a first plurality of radio-frequency (RF) chains coupled to a first plurality of antennas and a receiver having a second plurality of RF chains coupled to a second plurality of antennas, are provided. Techniques include receiving consecutive sounding packets each have a training symbol and that collectively sound a full-size channel for the MIMO system. A sub-channel estimate for each sounding packet can then be determined based on various factors, such as a known power level rule and gain factor. Scaling factors may be applied to each of these sub-channel estimates to produce a scaled sub-channel estimates.
摘要翻译：在多输入多输出（MIMO）系统中用于天线选择的技术和设备，其中通信是在具有耦合到第一多个天线的第一多个射频（RF）链的发射机之间进行通信，以及具有提供耦合到第二多个天线的第二多个RF链。技术包括接收连续的探测分组，每个分组具有训练符号，并且共同发出用于MIMO系统的全尺寸信道。然后可以基于诸如已知功率电平规则和增益因子的各种因素来确定每个探测分组的子信道估计。可以对这些子信道估计中的每一个应用缩放因子以产生缩放的子信道估计。

6. 发明申请

WO2008134420A3 POWER AMPLIFIER ADJUSTMENT FOR TRANSMIT BEAMFORMING IN MULTI-ANTENNA WIRELESS SYSTEMS 审中-公开
标题翻译：多天线无线系统中发射波束的功率放大器调整
公开(公告)号：WO2008134420A3
公开(公告)日：2008-12-24
申请号：PCT/US2008061411
申请日：2008-04-24
申请人： MARVELL WORLD TRADE LTD , NABAR ROHIT U , ZHANG HONGYUAN
发明人： NABAR ROHIT U , ZHANG HONGYUAN
IPC分类号： H04B7/04 , H03G3/30
CPC分类号： H04B7/0617 , H01Q3/40 , H03F3/245 , H03G3/3042 , H04B7/0408 , H04W16/28
摘要： One or more beamsteering matrices are applied to a plurality of signals to be transmitted via multiple antennas. The plurality of signals are provided to a plurality of power amplifiers coupled to the multiple antennas after applying the one or more beamsteering matrices to the plurality of signals. Signal energies are determined for the plurality of signals provided to the plurality of power amplifiers, and output power levels of the plurality of power amplifiers are adjusted based on the determined signal energies.
摘要翻译：一个或多个波束指向矩阵被应用于要通过多个天线发送的多个信号。在将所述一个或多个波束指向矩阵应用于所述多个信号之后，将所述多个信号提供给耦合到所述多个天线的多个功率放大器。对提供给多个功率放大器的多个信号确定信号能量，并且基于确定的信号能量调整多个功率放大器的输出功率电平。

7. 发明申请

WO2009009199A3 ANTENNA SELECTION AND TRAINING USING A SPATIAL SPREADING MATRIX FOR USE IN A WIRELESS MIMO COMMUNICATION SYSTEM 审中-公开
标题翻译：使用空间扩展矩阵进行天线选择和训练，用于无线MIMO通信系统
公开(公告)号：WO2009009199A3
公开(公告)日：2009-09-11
申请号：PCT/US2008060903
申请日：2008-04-18
申请人： MARVELL WORLD TRADE LTD , ZHANG HONGYUAN , NABAR ROHIT U
发明人： ZHANG HONGYUAN , NABAR ROHIT U
IPC分类号： H04B7/06 , H04B7/08
CPC分类号： H04B7/0417 , H04B7/0626 , H04B7/0639 , H04B7/0691 , H04B7/0874 , H04L1/0054 , H04L1/0071 , H04L1/06
摘要： A wireless communication system and method uses a spatial spreading matrix to distribute the encoded spatial data streams to a number of transmit chains and further uses the spatial spreading matrix for antenna selection computation in a transmitter. The spatial spreading matrix is designed such that a receiver is able to know and utilize the spatial spreading matrix for computing transmission antenna selection, receiver antenna selection and joint transmission/receiving antenna selection. The use of this spatial spreading matrix for antenna selection computation provides increased accuracy in antenna selection for transmission of spatial data streams, where the number of spatial data streams is less than the number of transmit or receive chains between the transmitter and receiver, and the number of transmit or receive chains is less than the corresponding transmission or receiving antennas.
摘要翻译：无线通信系统和方法使用空间扩展矩阵将编码的空间数据流分配到多个发射链，并且还在发射机中使用空间扩展矩阵进行天线选择计算。空间扩展矩阵被设计成使得接收机能够知道和利用空间扩展矩阵来计算发射天线选择，接收机天线选择和联合发射/接收天线选择。用于天线选择计算的这种空间扩展矩阵的使用在空间数据流的传输的天线选择中提供了更高的精度，其中空间数据流的数量小于发射机和接收机之间的发射或接收链的数量，的发射或接收链小于相应的发射或接收天线。

8. 发明申请

WO2009051748A3 BEAMFORMING USING PREDEFINED SPATIAL MAPPING MATRICES 审中-公开
标题翻译：用预测的空间映射矩阵进行波束形成
公开(公告)号：WO2009051748A3
公开(公告)日：2009-08-13
申请号：PCT/US2008011805
申请日：2008-10-15
申请人： MARVELL WORLD TRADE LTD , ZHANG HONGYUAN , NABAR ROHIT U
发明人： ZHANG HONGYUAN , NABAR ROHIT U
IPC分类号： H04B7/06 , H04B7/04 , H04L1/00
CPC分类号： H04B7/0456 , H04B7/0417 , H04B7/0617 , H04B7/0626 , H04B7/0632 , H04L1/0001
摘要： Systems and methods for transmitting packets to a receiver. In an implementation, the method includes storing, in a memory, a plurality of predefined spatial mapping matrices for use in a transmission of one or more packets to a receiver; sequentially transmitting one or more packets to the receiver, in which each of the sequential transmissions of one or more packets comprises using a different one of the plurality of predefined spatial mapping matrices stored in the memory; and selecting one of the plurality of predefined spatial mapping matrices stored in the memory for use in a subsequent transmission of one or more packets to the receiver, in which the selection of the one of the plurality of predefined spatial mapping matrices for use in the subsequent transmission is based on a quality of reception of the one or more data packets transmitted in each of the sequential transmissions.
摘要翻译：用于将分组发送到接收器的系统和方法。在一个实现中，该方法包括：在存储器中存储多个预定义的空间映射矩阵，用于将一个或多个分组传输到接收器; 将一个或多个分组顺序传输到接收器，其中一个或多个分组的每个顺序传输包括使用存储在存储器中的多个预定义空间映射矩阵中的不同的一个; 以及选择存储在所述存储器中的所述多个预定义空间映射矩阵中的一个以用于随后将一个或多个分组传输到所述接收器，其中，选择所述多个预定义空间映射矩阵中的所述一个预定义空间映射矩阵用于随后传输基于在每个顺序传输中传输的一个或多个数据分组的接收质量。

9. 发明申请

WO2011014685A3 METHODS AND APPARATUS FOR WLAN TRANSMISSION 审中-公开
标题翻译：用于WLAN传输的方法和设备
公开(公告)号：WO2011014685A3
公开(公告)日：2011-03-24
申请号：PCT/US2010043756
申请日：2010-07-29
申请人： MARVELL WORLD TRADE LTD , SRINIVASA SUDHIR , ZHANG HONGYUAN , NABAR ROHIT U
发明人： SRINIVASA SUDHIR , ZHANG HONGYUAN , NABAR ROHIT U
IPC分类号： H04L1/00
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：在用于生成用于经由通信信道传输的物理层（PHY）数据单元的方法中，对应于多个空间流和多个编码器的第一组调制编码方案（MCS）和第二组MCS是提供。第一组MCS对应于第一信道带宽，第二组MCS对应于第二信道带宽，并且第一组MCS与第二组MCS不同。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选择MCS，并且当要使用第一组MCS发送PHY数据单元时，从第二组MCS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的MCS对信息比特进行编码，并且将编码的信息比特解析成空间流的数量。编码的信息比特根据MCS被调制，并且基于调制的编码的信息比特来形成多个OFDM符号。

10. 发明申请

WO2008036670A2 CALIBRATION CORRECTION FOR IMPLICIT BEAMFORMING IN A WIRELESS MIMO COMMUNICATION SYSTEM 审中-公开
标题翻译：在无线MIMO通信系统中进行伪随机校正的校正校正
公开(公告)号：WO2008036670A2
公开(公告)日：2008-03-27
申请号：PCT/US2007078780
申请日：2007-09-18
申请人： MARVELL SEMICONDUCTOR INC , ZHANG HONGYUAN , NABAR ROHIT U , SHIRALI KEDAR , LOC PETER
发明人： ZHANG HONGYUAN , NABAR ROHIT U , SHIRALI KEDAR , LOC PETER
IPC分类号： H04B7/06
CPC分类号： H04B7/0413 , H04B7/0617 , H04B17/21 , H04L25/0204 , H04L25/0228 , H04L25/03343 , H04L2025/03414 , H04L2025/03426 , H04L2025/03802
摘要： A transmitter beamforming technique for use in a MIMO wireless communication system determines a partial description of a reverse channel without determining a full dimensional description of the reverse channel. A correction matrix is developed from the partial description of the reverse channel and a description of the forward channel. The correction matrix is used to process signals to be transmitted via the forward channel, and a steering matrix is used to perform beamforming in the forward channel.
摘要翻译：用于MIMO无线通信系统的发射机波束成形技术确定反向信道的部分描述，而不确定反向信道的全维度描述。从反向信道的部分描述和正向信道的描述开发校正矩阵。校正矩阵用于处理要经由正向信道发送的信号，并且使用导引矩阵来在前向信道中执行波束成形。

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