公开(公告)号：US09215055B2

公开(公告)日：2015-12-15

申请号：US14555305

申请日：2014-11-26

Applicant: Marvell World Trade Ltd.

Inventor： Liwen Chu ,  Hui-Ling Lou ,  Hongyuan Zhang ,  Yakun Sun ,  Xiayu Zheng ,  Rui Cao

IPC: H04K1/10 ,  H04L27/28 ,  H04L5/00 ,  H04L27/26 ,  H04L25/02 ,  H04W74/08 ,  H04W84/12

CPC classification number: H04L5/0053 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0094 ,  H04L25/0224 ,  H04L27/2626 ,  H04W72/0446 ,  H04W74/002 ,  H04W74/0816 ,  H04W84/12

Abstract: Respective sub-channels of an OFDM channel are allocated by a first device to second devices. A first control frame, transmitted from the first device to the second devices, indicates that the second devices are requested to transmit a second control frame to the first device. Respective second control frames are received from at the first device from least some of the second devices. A second control frame received from a particular second device indicates that at least a portion of the sub-channel allocated to the second device is available. An OFDMA data unit is transmitted by the first device. The OFDMA data unit includes respective OFDM data units transmitted to the at least some of the second devices. Each OFDM data unit is transmitted to a particular second device in the portion of the sub-channel indicated to be available by the second control frame received from the second device.

Abstract translation: OFDM信道的各个子信道由第一设备分配给第二设备。 从第一设备发送到第二设备的第一控制帧指示第二设备被请求将第二控制帧发送到第一设备。 从第一设备从至少一些第二设备接收相应的第二控制帧。 从特定的第二设备接收的第二控制帧指示分配给第二设备的子信道的至少一部分可用。 OFDMA数据单元由第一设备发送。 OFDMA数据单元包括发送到至少一些第二设备的各个OFDM数据单元。 每个OFDM数据单元被发送到指示为由从第二设备接收的第二控制帧可用的子信道的部分中的特定第二设备。

公开(公告)号：US09100065B2

公开(公告)日：2015-08-04

申请号：US14283802

申请日：2014-05-21

Applicant: Marvell World Trade Ltd.

Inventor： Jungwon Lee ,  Yakun Sun ,  Hui-Ling Lou

IPC: H04L27/00 ,  H04B7/02 ,  H04L1/06 ,  H04L1/18 ,  H04B7/04 ,  H04L1/00

CPC classification number: H04B7/024 ,  H04B7/0413 ,  H04L1/0042 ,  H04L1/0068 ,  H04L1/0643 ,  H04L1/1819

Abstract: Techniques are provided for transmitting and receiving a mother code in an incremental redundancy hybrid automatic repeat-request protocol. A set of information bits corresponding to a message may be encoded and interleaved to produce the mother code. Each bit position of the mother code may be mapped to an output symbol, and each output symbol may be mapped to an antenna for transmission. One or more transmissions of symbols contained in the output symbols may be performed, where each transmission may include puncturing the mother code by selecting one or more symbols from the of output symbols, and transmitting each symbol in the one or more symbols on an antenna corresponding to that symbol. The mother code may be decoded, in part, by determining combinable bits contained within a set of received symbols, and computing one or more log-likelihood ratio values corresponding to each symbol in the set of received symbols.

Abstract translation: 提供了用于以增量冗余混合自动重复请求协议发送和接收母码的技术。 对应于消息的一组信息位可以被编码和交织以产生母码。 母码的每个比特位置可以被映射到输出符号，并且每个输出符号可以被映射到天线以进行传输。 可以执行输出符号中包含的符号的一个或多个传输，其中每个传输可以包括通过从输出符号中选择一个或多个符号来对母码进行穿刺，并且在天线上的一个或多个符号中发送每个符号 到那个符号。 可以部分地通过确定包含在一组接收到的符号内的可组合比特，以及计算与所接收的符号集合中的每个符号相对应的一个或多个对数似然比值来对母码进行解码。

公开(公告)号：US09054765B2

公开(公告)日：2015-06-09

申请号：US13655766

申请日：2012-10-19

Applicant: Marvell World Trade Ltd.

Inventor： Raphael Cendrillon ,  Yakun Sun ,  Hongyuan Zhang ,  Atul Salhotra ,  Hui-Ling Lou

IPC: H04B7/08 ,  H04B1/707

CPC classification number: H04B7/0854 ,  H04B7/0851 ,  H04B2001/70724

Abstract: Systems and methods are provided for suppressing interference from a received data signal. A characteristic of a channel is estimated, the channel being configured for transmission of data between a transmitting device and a receiving device having two or more receive antennas. A spatial correlation of interference is determined for the two or more receive antennas based on the channel characteristic. The received data signal is filtered based on the spatial correlation.

Abstract translation: 提供了用于抑制来自接收到的数据信号的干扰的系统和方法。 估计信道的特性，该信道被配置用于发送设备和具有两个或更多个接收天线的接收设备之间的数据传输。 基于信道特性，确定两个或多个接收天线的干扰的空间相关性。 基于空间相关性对接收的数据信号进行滤波。

公开(公告)号：US20150117227A1

公开(公告)日：2015-04-30

申请号：US14523678

申请日：2014-10-24

Applicant: MARVELL WORLD TRADE LTD.

Inventor： Hongyuan Zhang ,  Hui-Ling Lou ,  Su Khiong Yong

IPC: H04L27/26 ,  H04W52/28 ,  H04L1/00

CPC classification number: H04L27/2605 ,  H04J11/00 ,  H04L1/0057 ,  H04L27/2613 ,  H04L27/2698 ,  H04W52/286 ,  H04W84/12

Abstract: A method for generating a physical layer (PHY) data unit for transmission via a communication channel is described where the PHY data unit conforms to a first communication protocol. Orthogonal frequency division multiplexing (OFDM) symbols for a data field of the PHY data unit are generated according to a range extension coding scheme that corresponds to a range extension mode of the first communication protocol. A preamble of the PHY data unit is generated, the preamble having i) a first portion that indicates a duration of the PHY data unit and ii) a second portion that indicates whether at least some OFDM symbols of the data field are generated according to the range extension coding scheme. The first portion of the preamble is formatted such that the first portion of the preamble is decodable by a receiver device that conforms to a second communication protocol, but does not conform to the first communication protocol, to determine the duration of the PHY data unit based on the first portion of the preamble. The PHY data unit is generated to include the preamble and the data field.

Abstract translation: 描述了通过通信信道生成用于传输的物理层（PHY）数据单元的方法，其中PHY数据单元符合第一通信协议。 根据与第一通信协议的范围扩展模式对应的范围扩展编码方案，生成PHY数据单元的数据字段的正交频分复用（OFDM）符号。 产生PHY数据单元的前导码，该前同步码具有i）指示PHY数据单元的持续时间的第一部分，以及ii）指示是否根据该数据字段生成数据字段的至少一些OFDM符号的第二部分 范围扩展编码方案。 前导码的第一部分被格式化为使得前导码的第一部分可由符合第二通信协议但不符合第一通信协议的接收机设备解码，以确定基于PHY数据单元的持续时间 在序言的第一部分。 生成PHY数据单元以包括前导码和数据字段。

公开(公告)号：US08867569B2

公开(公告)日：2014-10-21

申请号：US13888223

申请日：2013-05-06

Applicant: Marvell World Trade Ltd.

Inventor： Hongyuan Zhang ,  Rohit U. Nabar ,  Manyuan Shen ,  Songping Wu ,  Hui-Ling Lou ,  Yong Liu

IPC: H04J3/00 ,  H04W16/28 ,  H04L25/03 ,  H04L27/26

CPC classification number: H04W16/28 ,  H04L25/03343 ,  H04L27/2613 ,  H04L2025/03426 ,  H04L2025/03789 ,  H04L2025/03815

Abstract: A beamforming training (BFT) data unit for transmission via a communication channel in a wireless personal area network is generated, and in particular, is for transmitting beamforming training information. A physical layer header and first BFT data are encoded using block encoding to generate a first block. Second BFT data are encoded using block encoding to generate a second block. The BFT data unit is generated with a fixed-length payload, such that the BFT data unit includes only i) a preamble, ii) the first block, and iii) the second block.

Abstract translation: 生成用于通过无线个域网中的通信信道传输的波束形成训练（BFT）数据单元，特别是用于发送波束成形训练信息。 使用块编码对物理层报头和第一BFT数据进行编码以生成第一块。 使用块编码对第二BFT数据进行编码以生成第二块。 生成具有固定长度有效载荷的BFT数据单元，使得BFT数据单元仅包括i）前置码，ii）第一块，以及iii）第二块。

公开(公告)号：US08838041B2

公开(公告)日：2014-09-16

申请号：US13892811

申请日：2013-05-13

Applicant: Marvell World Trade Ltd.

Inventor： Rohit Nabar ,  Hui-Ling Lou

IPC: H04B1/00 ,  H04L25/02 ,  H04L27/26 ,  H04W72/12

CPC classification number: H04W72/1226 ,  H04L25/0206 ,  H04L25/0226 ,  H04L27/2613

Abstract: A first network device including a first calibration module to generate training signals for each of a plurality of subcarriers. The training signals are transmitted from the first network device to a second network device via antennas of the first network device using the subcarriers. A first steering module receives a first matrix for each subcarrier, which includes channel state information for each of the training signals received by the second network device, from the second network device according to a transmission schedule and generates a steering matrix based on the first matrix. The transmission schedule is predetermined or is transmitted to the second network device prior to transmitting the training signals. A first control module adjusts, based on the steering matrix, first beamforming weights associated with the antennas to direct first radio frequency signals to be transmitted toward the second network device.

Abstract translation: 一种第一网络设备，包括用于为多个子载波中的每一个生成训练信号的第一校准模块。 训练信号通过使用子载波的第一网络设备的天线从第一网络设备发送到第二网络设备。 第一转向模块根据传输调度从第二网络设备接收每个子载波的第一矩阵，其包括由第二网络设备接收的每个训练信号的信道状态信息，并且基于第一矩阵生成导引矩阵 。 在发送训练信号之前，传输调度是预定的或者被发送到第二网络设备。 第一控制模块基于导向矩阵来调整与天线相关联的第一波束赋形权重，以将第一射频信号引导到第二网络设备。

公开(公告)号：US20140233625A1

公开(公告)日：2014-08-21

申请号：US14261204

申请日：2014-04-24

Applicant: Marvell World Trade Ltd.

Inventor： Jungwon Lee ,  Woong Jun Jang ,  Hui-Ling Lou

IPC: H04L27/01 ,  H04B7/04

CPC classification number: H04L27/01 ,  H04B7/0413 ,  H04B7/0697 ,  H04B7/0845 ,  H04B7/0857 ,  H04L1/08 ,  H04L1/1816 ,  H04L1/1845 ,  H04L2025/03426

Abstract: Systems and methods are provided for decoding signal vectors in multiple-input multiple-output (MIMO) systems, where the receiver has received one or more signal vectors based on the same transmitted vector. The receiver linearizes each received signal vector using one or more zero-forcing, MMSE, or other suitable linear equalizers. The components of the equalized signal vectors may be combined using maximum-ratio combining to form the components of a combined equalized signal vector. The components of the combined equalized signal vector may then be decoded individually using a linear decoder.

Abstract translation: 提供了用于对多输入多输出（MIMO）系统中的信号向量进行解码的系统和方法，其中接收机已经基于相同的传输向量接收了一个或多个信号向量。 接收机使用一个或多个零强制，MMSE或其他合适的线性均衡器来线性化每个接收信号向量。 可以使用最大比合并来组合均衡的信号向量的分量以形成组合的均衡信号向量的分量。 然后可以使用线性解码器单独地解码组合的均衡信号向量的分量。

公开(公告)号：US20140211766A1

公开(公告)日：2014-07-31

申请号：US14166609

申请日：2014-01-28

Applicant: MARVELL WORLD TRADE LTD.

Inventor： Qing Zhao ,  Hui-Ling Lou ,  Leilei Song

IPC: H04W88/06 ,  H04J3/00

CPC classification number: H04W88/06 ,  H04W72/1215

Abstract: In a method of operating a device configured to communicate according to at least a first communication protocol and a second communication protocol, a time division multiplexing (TDM) pattern is obtained. The TDM pattern is defined for communication according to the first communication protocol is obtained. The TDM pattern defines communication periodicity that includes a scheduled period and an unscheduled period. A guard interval is reserved within the unscheduled period, and the unscheduled period is used for communication according to the second communication protocol. The guard interval is used to transition to an inactive state with respect to the second communication protocol.

Abstract translation: 在操作被配置为根据至少第一通信协议和第二通信协议通信的设备的方法中，获得时分复用（TDM）模式。 根据第一通信协议定义了TDM模式，用于通信。 TDM模式定义了包括预定时段和非计划周期的通信周期。 在非预定时段内保留一个保护间隔，根据第二个通信协议将非调度周期用于通信。 保护间隔用于相对于第二通信协议转换到非活动状态。

公开(公告)号：US20140206304A1

公开(公告)日：2014-07-24

申请号：US14222569

申请日：2014-03-21

Applicant: MARVELL WORLD TRADE LTD.

Inventor： Hongyuan Zhang ,  Manyuan Shen ,  Songping Wu ,  Hui-Ling Lou ,  Yong Liu

IPC: H04B1/04

CPC classification number: H04B1/04 ,  H04B7/0617 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0684 ,  H04B7/0695 ,  H04B7/0848 ,  H04B7/086 ,  H04B7/088

Abstract: A first plurality of training data units are transmitted via a plurality of antennas of a first station as part of a first transmit beamforming training procedure. Subsequently, a second plurality of training data units are received via the plurality of antennas as part of second transmit beamforming procedure while the first station applies a single receive antenna configuration. The second plurality of training data units includes an information element that specifies a feedback from a second station, the feedback including an identifier corresponding to one of the training data units in the first plurality of data units. The first station transmits a feedback message to the second station, that includes (i) one or more indicators of one or more training data units selected from the second plurality of training data units, and (ii) a request to perform a subsequent beamforming training procedure.

Abstract translation: 作为第一发射波束形成训练程序的一部分，经由第一站的多个天线发送第一多个训练数据单元。 随后，作为第二发射波束形成过程的一部分，经由多个天线接收第二多个训练数据单元，而第一站施加单个接收天线配置。 第二多个训练数据单元包括指定来自第二站的反馈的信息元素，所述反馈包括与第一多个数据单元中的训练数据单元之一相对应的标识符。 第一站向第二站发送反馈消息，其包括（i）从第二多个训练数据单元中选择的一个或多个训练数据单元的一个或多个指示符，以及（ii）执行后续波束形成训练的请求 程序。

公开(公告)号：US20130266100A1

公开(公告)日：2013-10-10

申请号：US13852576

申请日：2013-03-28

Applicant: MARVELL WORLD TRADE LTD.

Inventor： Krishna Srikanth Gomadam ,  Yakun Sun ,  Raphael Cendrillon ,  Hui-Ling Lou

IPC: H04L25/02

CPC classification number: H04L25/0242 ,  H04L5/0023 ,  H04L25/0228 ,  H04L25/03159

Abstract: Systems and methods for estimating characteristics of a channel are provided. A transmission of known reference data is received at a receiving device. The reference data is transmitted over the channel that includes one or more desired layers and one or more interfering layers. Characteristics of the channel are determined based on the known reference data, where the determining includes a joint estimation of the one or more desired layers and the one or more interfering layers. The determining includes selecting certain of the layers to be estimated at each of the known reference data and selecting certain of the layers to be estimated over a range of the known reference data. The determining includes solving an equation to jointly estimate the one or more desired layers and the one or more interfering layers based on the selections. The selections reduce a number of unknown values in the equation.

Abstract translation: 提供了用于估计通道特性的系统和方法。 在接收设备处接收已知参考数据的传输。 参考数据在包括一个或多个所需层和一个或多个干扰层的信道上传输。 基于已知参考数据确定信道的特征，其中确定包括一个或多个所需层和一个或多个干扰层的联合估计。 确定包括在每个已知参考数据处选择要估计的某些层，并且在已知参考数据的范围上选择待估计的某些层。 确定包括求解方程式以基于选择共同估计一个或多个所需层和一个或多个干扰层。 选择减少了方程中的一些未知值。