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11. 发明申请

WO2010027864A3 PHYSICAL LAYER DATA UNIT FORMAT 审中-公开
公开(公告)号：WO2010027864A3
公开(公告)日：2010-03-11
申请号：PCT/US2009/055069
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： H04L27/26
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.

12. 发明申请

WO2009140605A1 EFFICIENT PHYSICAL LAYER PREAMBLE FORMAT 审中-公开
标题翻译：有效的物理层前置格式
公开(公告)号：WO2009140605A1
公开(公告)日：2009-11-19
申请号：PCT/US2009/044160
申请日：2009-05-15
申请人： MARVELL WORLD TRADE LTD. , ZHANG, Hongyuan , NABAR, Rohit, U. , WU, Songping , LOU, Hui-Ling , ZHOU, Quan
发明人： ZHANG, Hongyuan , NABAR, Rohit, U. , WU, Songping , LOU, Hui-Ling , ZHOU, Quan
IPC分类号： H04J11/00 , H04L27/26
CPC分类号： H04B1/707 , H04J13/0014 , H04J13/10 , H04L27/2613 , H04L27/262
摘要： A method for generating a preamble of a data unit for transmission via a communication channel includes generating a first field of the preamble using one of a first sequence or a second sequence, such that the first sequence and the second sequence are complementary sequences such that a sum of out-of-phase aperiodic autocorrelation coefficients of the first sequence and the second sequence is zero; generating, using the other one of the first sequence or the second sequence, an indicator of a start of a second field of the preamble, the second field associated with channel estimation information, such that the indicator of the start of the second field immediately follows the first field; and generating the second field of the preamble.
摘要翻译：一种用于生成用于经由通信信道进行传输的数据单元的前同步码的方法包括使用第一序列或第二序列中的一个生成前导码的第一字段，使得第一序列和第二序列是互补序列，使得第一序列和第二序列的异相非周期自相关系数的和为零; 使用所述第一序列或所述第二序列中的另一个序列生成所述前导码的第二字段的开始的指示符，所述第二字段与信道估计信息相关联，使得所述第二字段的开始的指示符紧随其后第一场; 以及产生所述前导码的第二字段。

13. 发明申请

WO2008109790A1 CODEBOOK SELECTION FOR TRANSMIT BEAMFORMING 审中-公开
标题翻译：传输波束编码选择
公开(公告)号：WO2008109790A1
公开(公告)日：2008-09-12
申请号：PCT/US2008/056127
申请日：2008-03-07
申请人： MARVELL INTERNATIONAL LTD. , ZHANG, Hongyuan , NABAR, Rohit, U.
发明人： ZHANG, Hongyuan , NABAR, Rohit, U.
IPC分类号： G06F15/173
CPC分类号： H04B7/0417 , H04B7/0634 , H04B7/0639
摘要： A method selects a codebook for transmit beamforming. The method constructs an estimated channel matrix based on a codebook. selects a channel submatrix from the estimated channel matrix, calculates a selection matrix from the channel submatrix; and assigns a steering matrix based on the selection matrix. There may be multiple codebooks and the method may construct an estimated channel matrix, select a channel submatrix, and calculate a selection matrix for each of the codebooks, then select an optimal codebook. The steering matrix is assigned based on the optimal codebook. The steering matrix may be used in steering a transmitted packet. The method may also calculate a post-MIMO equalizer signal-to-noise ratio for a data stream, based on the estimated channel matrix and the selected codebook. A related system is also disclosed. Other embodiments are provided, and each of the embodiments described herein can be used alone or in combination with one another.
摘要翻译：一种方法选择用于发送波束成形的码本。该方法构建了基于码本的估计信道矩阵。从估计的信道矩阵中选择信道子矩阵，从信道子矩阵计算选择矩阵; 并根据选择矩阵分配导引矩阵。可以存在多个码本，并且该方法可以构建估计的信道矩阵，选择信道子矩阵，并计算每个码本的选择矩阵，然后选择最佳码本。基于最佳码本分配指导矩阵。导向矩阵可以用于控制传输的分组。该方法还可以基于估计的信道矩阵和选择的码本计算数据流的后MIMO均衡器信噪比。还公开了相关系统。提供了其它实施例，并且本文所述的每个实施例可以单独使用或彼此组合使用。

14. 发明申请

WO2012177414A1 UPLINK TRAINING FOR MIMO IMPLICIT BEAMFORMING 审中-公开
标题翻译：用于MIMO隐含波束的上行链路训练
公开(公告)号：WO2012177414A1
公开(公告)日：2012-12-27
申请号：PCT/US2012/041423
申请日：2012-06-07
申请人： MARVELL WORLD TRADE LTD. , NABAR, Rohit, U. , ZHANG, Hongyuan , SRINIVASA, Sudhir , ZHENG, Xiayu
发明人： NABAR, Rohit, U. , ZHANG, Hongyuan , SRINIVASA, Sudhir , ZHENG, Xiayu
IPC分类号： H04B7/06
CPC分类号： H04B7/0417 , H04B7/0617 , H04B7/0619 , H04B7/0626 , H04B7/063 , H04B7/0632 , H04B7/0634
摘要： In a method for beamforming in a multiple input multiple output (MIMO) communication system, a data unit is received from a communication device via a MIMO communication channel, and it is determined whether the data unit satisfies one or more selection criteria. Further, when it is determined that the data unit satisfies the one or more selection criteria, the data unit is selected to be used in developing a steering matrix for transmitting data units to the communication device.
摘要翻译：在多输入多输出（MIMO）通信系统中的波束形成方法中，经由MIMO通信信道从通信设备接收数据单元，并且确定数据单元是否满足一个或多个选择标准。此外，当确定数据单元满足一个或多个选择标准时，数据单元被选择用于开发用于向通信设备发送数据单元的导向矩阵。

15. 发明申请

WO2010027865A3 BEAMFORMING BY SECTOR SWEEPING 审中-公开
公开(公告)号：WO2010027865A3
公开(公告)日：2010-03-11
申请号：PCT/US2009/055071
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
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.

16. 发明申请

WO2015013401A1 METHOD AND APPARATUS FOR MITIGATING INTERFERENCE IN A WIRELESS NETWORK THROUGH USE OF TRANSMIT BEAMFORMING 审中-公开
标题翻译：通过使用发射光束来减轻无线网络干扰的方法和装置
公开(公告)号：WO2015013401A1
公开(公告)日：2015-01-29
申请号：PCT/US2014/047809
申请日：2014-07-23
申请人： MARVELL WORLD TRADE LTD. , ZHANG, Hongyuan , NABAR, Rohit, U. , LI, Pen, Chung
发明人： ZHANG, Hongyuan , NABAR, Rohit, U. , LI, Pen, Chung
IPC分类号： H04B7/02
CPC分类号： H04B7/024 , H04B7/0413 , H04B7/0617 , H04B7/0619 , H04B7/0632
摘要： In a method for reducing interference in a first wireless communication network and a second wireless communication network, a first access point (AP) device of the first wireless communication network coordinates with a second AP device of the second wireless communication network with respect to utilizing transmit beamforming at the first AP device and transmit beamforming at the second AP device for the purpose of reducing interference in the first wireless communication network and the second wireless communication network. Based on coordinating with the second AP device, the first AP device uses a beamforming matrix to transmit, via a multiple input, multiple output (MIMO) communication channel, to one or more first stations in the first wireless communication network for mitigating interference between the first wireless communication network and the second wireless communication network.
摘要翻译：在减少第一无线通信网络和第二无线通信网络中的干扰的方法中，第一无线通信网络的第一接入点（AP）设备与第二无线通信网络的第二AP设备协调，以便利用传输在第一AP设备处的波束成形并且在第二AP设备处发送波束成形，以减少第一无线通信网络和第二无线通信网络中的干扰。基于与第二AP设备的协调，第一AP设备使用波束成形矩阵经由多输入多输出（MIMO）通信信道发送到第一无线通信网络中的一个或多个第一站，以减轻干扰第一无线通信网络和第二无线通信网络。

17. 发明申请

WO2013152111A1 PHYSICAL LAYER FRAME FORMAT FOR WLAN 审中-公开
标题翻译： WLAN的物理层框架格式
公开(公告)号：WO2013152111A1
公开(公告)日：2013-10-10
申请号：PCT/US2013/035132
申请日：2013-04-03
申请人： MARVELL WORLD TRADE LTD. , ZHANG, Hongyuan , SRINIVASA, Sudhir , NABAR, Rohit, U. , BANERJEA, Raja
发明人： ZHANG, Hongyuan , SRINIVASA, Sudhir , NABAR, Rohit, U. , BANERJEA, Raja
IPC分类号： H04L1/00
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。

18. 发明申请

WO2012106635A1 CONTROL MODE PHY FOR WLAN 审中-公开
标题翻译： WLAN的控制模式PHY
公开(公告)号：WO2012106635A1
公开(公告)日：2012-08-09
申请号：PCT/US2012/023832
申请日：2012-02-03
申请人： MARVELL WORLD TRADE LTD. , ZHANG, Hongyuan , NABAR, Rohit, U. , BANERJEA, Raja , LIU, Yong , SRINIVASA, Sudhir , KWON, Hyukjoon
发明人： ZHANG, Hongyuan , NABAR, Rohit, U. , BANERJEA, Raja , LIU, Yong , SRINIVASA, Sudhir , KWON, Hyukjoon
IPC分类号： H04L1/00 , H04L1/08
CPC分类号： H04L27/2602 , H03M13/23 , H04L1/0046 , H04L1/0065 , H04L1/0072 , H04L1/08 , H04L27/2613 , H04L27/265
摘要： In a method for generating a physical layer (PHY) data unit for transmission via a communication channel, information bits to be included in the PHY data unit are encoded using a forward error correction (FEC) encoder. The information bits are mapped to a constellation symbols. Additionally, either the information bits are encoded according to a block coding scheme, or the constellation symbols are encoded according to the block coding scheme. Orthogonal frequency division multiplexing (OFDM) symbols are generated to include the constellation symbols and the PHY data unit is generated to include the OFDM symbols.
摘要翻译：在通过通信信道生成用于发送的物理层（PHY）数据单元的方法中，使用前向纠错（FEC）编码器对要包括在PHY数据单元中的信息比特进行编码。信息位被映射到星座符号。另外，根据块编码方案对信息比特进行编码，或者根据块编码方案对星座符号进行编码。生成正交频分复用（OFDM）符号以包括星座符号，并且生成PHY数据单元以包括OFDM符号。

19. 发明申请

WO2012103363A1 PHYSICAL LAYER FRAME FORMAT FOR LONG RANGE WLAN 审中-公开
标题翻译：长距离WLAN的物理层框架格式
公开(公告)号：WO2012103363A1
公开(公告)日：2012-08-02
申请号：PCT/US2012/022768
申请日：2012-01-26
申请人： MARVELL WORLD TRADE LTD. , ZHANG, Hongyuan , NABAR, Rohit, U. , BANERJEA, Raja , LIU, Yong
发明人： ZHANG, Hongyuan , NABAR, Rohit, U. , BANERJEA, Raja , LIU, Yong
IPC分类号： H04L5/00
CPC分类号： H04W28/06 , H04L5/0048 , H04L5/0053 , H04L27/2602 , H04L27/2613 , H04L27/2666 , H04L69/02 , H04L69/22 , H04W84/12
摘要： In a method for generating a physical layer (PHY) data unit for transmission via a communication channel, a first preamble portion and a data portion of the data unit is generated. The first preamble portion includes one or more long training fields. The first preamble portion and the data portion are modulated using a plurality of orthogonal frequency division multiplexing (OFDM) symbols. Symbol duration of each OFDM symbol is at least 8 μs. The data unit is generated to include the plurality of OFDM symbols.
摘要翻译：在用于生成经由通信信道传输的物理层（PHY）数据单元的方法中，生成数据单元的第一前导码部分和数据部分。第一前导部分包括一个或多个长训练场。使用多个正交频分复用（OFDM）符号来调制第一前同步码部分和数据部分。每个OFDM符号的符号持续时间至少为8μs。生成数据单元以包括多个OFDM符号。

20. 发明申请

WO2011014685A2 METHODS AND APPARATUS FOR WLAN TRANSMISSION 审中-公开
标题翻译： WLAN传输的方法和设备
公开(公告)号：WO2011014685A2
公开(公告)日：2011-02-03
申请号：PCT/US2010/043756
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。

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