公开(公告)号：US10038996B1

公开(公告)日：2018-07-31

申请号：US14327298

申请日：2014-07-09

Applicant: MARVELL INTERNATIONAL LTD.

Inventor： Sudhir Srinivasa ,  Hongyuan Zhang ,  Yakun Sun ,  Yan Zhang

IPC: H04W4/00 ,  H04W8/18 ,  H04B7/0452

CPC classification number: H04W8/186 ,  H04B7/0452

Abstract: A method in a communication network includes obtaining descriptions of a plurality of communication channels. Each communication channel is associated with a different one of a plurality of receivers. The method also includes identifying, based on the descriptions of the plurality of communication channels, two or more communication channels that satisfy one or more predetermined constraints related to orthogonality between the two or more communication channels. The method further includes selecting, to be included in a group of receivers, receivers associated with the two or more identified communication channels. The method additionally includes transmitting, to the group of receivers, at least one data unit that includes data intended for each receiver in the group.

公开(公告)号：US10003477B1

公开(公告)日：2018-06-19

申请号：US15152072

申请日：2016-05-11

Applicant: Marvell International Ltd.

Inventor： Ankit Sethi ,  Swaroop Venkatesh ,  Sudhir Srinivasa ,  Hongyuan Zhang

IPC: H04L25/02 ,  H04L27/26

CPC classification number: H04L25/0204 ,  H04L25/0228 ,  H04L25/0242 ,  H04L27/2657 ,  H04L27/2695

Abstract: Methods and systems are disclosed herein for performing channel estimation for multi-stream packets. The method may include receiving a data packet comprising a plurality of training fields, wherein the plurality of training fields comprises a training field, wherein the training field comprises a plurality of tones, and wherein the plurality of tones comprises a first tone and a second tone. The method may include modifying the first tone based on a predetermined signal associated with the first tone. The method may include storing the first tone in a data structure associated with the first tone. The method may include modifying the data structure based on the second tone.

公开(公告)号：US09942193B1

公开(公告)日：2018-04-10

申请号：US14961359

申请日：2015-12-07

Applicant: Marvell International Ltd.

Inventor： Liwen Chu ,  Hongyuan Zhang ,  Lei Wang ,  Jinjing Jiang ,  Hui-Ling Lou

IPC: H04W84/12 ,  H04L29/12

CPC classification number: H04L61/2038 ,  H04L61/6072

Abstract: A method for changing a first basic service set (BSS) color identifier for a first communication device identifiable by the first BSS color identifier and a first basic service set identifier that is longer than the first BSS color identifier is described. An indication that the first BSS color identifier and a second BSS color identifier for a second communication device have a same first value is received by the first communication device. Respective service coverage areas of the first and second communication devices at least partially overlap. A second value of the first BSS color identifier is determined by the first communication device in response to the indication. A notification frame that indicates the second value and a start time are generated by the first communication device. The first BSS color identifier is changed by the first communication device to the second value based on the start time.

公开(公告)号：US09941988B1

公开(公告)日：2018-04-10

申请号：US14325254

申请日：2014-07-07

Applicant: Marvell International Ltd.

Inventor： Hongyuan Zhang ,  Hui-Ling Lou ,  Rohit U. Nabar

IPC: H04J1/00

CPC classification number: H04J1/00 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0044 ,  H04L5/0064 ,  H04L27/2602

Abstract: Systems and techniques relating to wireless devices are described. A described system includes a first radio unit configured to receive communication signals that include one or more signals indicative of a first physical layer frame of a data packet, and produce a first output based on the first physical layer frame; a second radio unit configured to receive communication signals that include one or more signals indicative of a second physical layer frame of the data packet, and produce a second output based on the second physical layer frame, the one or more signals indicative of the first physical layer frame are concurrently received with the one or more signals indicative of the second physical layer frame; a deparser configured to combine outputs, including the first and second outputs, to produce a combined output; and a controller configured to resolve the data packet based on the combined output.

公开(公告)号：US09804918B1

公开(公告)日：2017-10-31

申请号：US14882123

申请日：2015-10-13

Applicant: Marvell International Ltd.

Inventor： Hongyuan Zhang ,  Mingguang Xu ,  Yakun Sun

IPC: G06F11/00 ,  G06F11/10 ,  H04L1/00 ,  H03M13/00

CPC classification number: G06F11/10 ,  H03M13/00 ,  H04L1/0041 ,  H04L1/0061 ,  H04L2001/0092

Abstract: A physical layer (PHY) preamble is generated, the PHY preamble defined by a first wireless communication protocol and including a first portion that corresponds to a legacy PHY preamble defined by a second, legacy wireless communication protocol. The PHY preamble also includes a second portion that is defined by the first wireless communication protocol. Error detection information is generated using a first field in the first portion of the PHY preamble. The second portion of the PHY preamble is generated to include the error detection information in a second field. The PHY data unit is generated so that the PHY data unit includes the PHY preamble.

公开(公告)号：US09729369B1

公开(公告)日：2017-08-08

申请号：US15282794

申请日：2016-09-30

Applicant: MARVELL INTERNATIONAL LTD.

Inventor： Hongyuan Zhang ,  Hui-Ling Lou ,  Yong Liu ,  Raja Banerjea

IPC: H04N7/12 ,  H04J3/04 ,  H04L27/26 ,  H04L1/00 ,  H04L1/06 ,  H04L25/03

CPC classification number: H04L27/2604 ,  H04L1/0041 ,  H04L1/0625 ,  H04L25/03866 ,  H04L27/2627

Abstract: In a method implemented in a communication device configured to transmit PHY data units via a communication channel, first data and second data is received. The first data is modulated according to a first constellation having a first number of constellation points, and the second data is modulated according to a second constellation having a second number of constellation points higher than the first number of constellation points. The first data and the second data is parsed to a plurality of spatial streams such that a first subset of the spatial streams includes at least some of the modulated first data but none of the modulated second data, and a second subset of the spatial streams includes at least some of the modulated second data but none of the modulated first data. A single PHY data unit that includes the plurality of spatial streams is generated.

公开(公告)号：US09661579B1

公开(公告)日：2017-05-23

申请号：US14268921

申请日：2014-05-02

Applicant: MARVELL INTERNATIONAL LTD.

Inventor： Hongyuan Zhang

IPC: H04W52/04 ,  H04L27/26 ,  H04W72/04 ,  H04L5/00

CPC classification number: H04W52/04 ,  H04L5/0007 ,  H04L5/006 ,  H04L27/2601 ,  H04W52/34 ,  H04W52/343 ,  H04W52/346 ,  H04W72/042 ,  H04W72/0453

Abstract: A first communication device calculates channel state information (CSI), and based on the CSI, (i) determines a first signal attenuation level corresponding to signals transmitted over a first sub-carrier frequency signal, and (ii) determines a second signal attenuation level corresponding to signals transmitted over a second sub-carrier frequency signal. The first communication device transmits data encoded over the first sub-carrier frequency and the second and second sub-carrier frequency to a second communication device by (i) increasing power loaded to signals transmitted over a sub-carrier frequency from among the first sub-carrier frequency and the second sub-carrier frequency that is associated with greater signal attenuation, and (ii) decreasing power loaded to signals transmitted over a sub-carrier frequency from among the first sub-carrier frequency and the second sub-carrier frequency that is associated with lesser signal attenuation.

公开(公告)号：US09608678B1

公开(公告)日：2017-03-28

申请号：US14571715

申请日：2014-12-16

Applicant: Marvell International LTD.

Inventor： Yakun Sun ,  Mingguang Xu ,  Hui-Ling Lou ,  Hongyuan Zhang ,  Yan Zhang ,  Liwen Chu ,  Jinjing Jiang

IPC: H04B15/00 ,  H04B1/10 ,  H04W24/02

CPC classification number: H04B1/10 ,  H04B1/406 ,  H04B17/24 ,  H04B17/318 ,  H04W24/02 ,  H04W72/1215

Abstract: A wireless device including a first receiver and a second receiver. The first receiver is configured to receive a first signal transmitted on a first network using a first communication standard, and generate, in response to a signal strength of the first signal being greater than or equal to a predetermined threshold, first information about the first signal based on a first portion of the first signal. The second receiver is configured to receive a second signal transmitted on a second network using a second communication standard, and suppress interference from the first signal based on the first information about the first signal. The first communication standard is different from the second communication standard. The first receiver and the second receiver are co-located in the wireless device.

公开(公告)号：US09509540B1

公开(公告)日：2016-11-29

申请号：US15043102

申请日：2016-02-12

Applicant: Marvell International Ltd.

Inventor： Hongyuan Zhang ,  Mingguang Xu ,  Yakun Sun

IPC: H04L27/26

CPC classification number: H04W52/0212 ,  H04L5/0007 ,  H04L5/0048 ,  H04L27/2611 ,  H04L27/2613 ,  H04W52/16 ,  H04W52/325 ,  H04W84/12

Abstract: Accordingly, systems and methods for managing power when the number of training and data tones are increased in a wireless communications system are provided. An L-SIG field is generated that includes a set of data and pilot tones, wherein the pilot tones are inserted between the data tones in the set of data and pilot tones. A plurality of training tones is added to the L-SIG field before and after the set of data and pilot tones. A symbol is generated that includes the L-SIG field, an L-LTF field, and a data field, wherein the training tones of the L-SIG field provide channel estimates for the data field. Power of the L-LTF field is managed relative to power of the L-SIG field in the generated symbol in a time domain.

Abstract translation: 因此，提供了在无线通信系统中增加训练和数据音调的数量时管理电力的系统和方法。 生成包括一组数据和导频音调的L-SIG字段，其中导频音被插入数据集和导频音中的数据音调之间。 在数据和导频音的组之前和之后，将多个训练音增加到L-SIG字段。 生成包括L-SIG字段，L-LTF字段和数据字段的符号，其中L-SIG字段的训练音调提供数据字段的信道估计。 相对于时域中生成的符号中的L-SIG字段的功率来管理L-LTF字段的功率。

公开(公告)号：US09369192B1

公开(公告)日：2016-06-14

申请号：US14524272

申请日：2014-10-27

Applicant: MARVELL INTERNATIONAL LTD.

Inventor： Ying-Cheng Lee ,  Timothy J. Donovan ,  Dharmesh C. Bhagatwala ,  Ken Kinwah Ho ,  Hongyuan Zhang ,  Rohit U. Nabar ,  Tsunglun Yu

IPC: H04W84/04 ,  H04B7/06 ,  H04B7/04

CPC classification number: H04B7/0617 ,  H04B7/046 ,  H04B7/0626 ,  H04B7/0634 ,  H04B7/0689 ,  H04B7/0871

Abstract: Systems, methods, and other embodiments associated with a hybrid beamforming architecture are described. According to one embodiment, a first wireless device includes a transmitter and a baseband beamforming processing unit. The baseband beamforming processing unit includes a steering matrix calculation unit and a steering matrix cache. The steering matrix calculation unit is configured to derive a steering matrix from channel related information in a first packet received from a second wireless device. The steering matrix includes weights. The steering matrix cache is configured to (i) store the steering matrix derived from the channel related information, and (ii) provide the weights from the steering matrix to the transmitter. The transmitter is configured to, based on the weights from the steering matrix, perform transmit beamforming on a second packet being transmitted to the second wireless device from the first wireless device.

Abstract translation: 描述了与混合波束形成架构相关联的系统，方法和其他实施例。 根据一个实施例，第一无线设备包括发射机和基带波束成形处理单元。 基带波束形成处理单元包括导向矩阵计算单元和导向矩阵高速缓存。 导引矩阵计算单元被配置为从从第二无线设备接收的第一分组中的信道相关信息中导出导引矩阵。 导向矩阵包括重量。 导引矩阵高速缓存被配置为（i）存储从信道相关信息导出的导引矩阵，以及（ii）从导引矩阵向发射机提供权重。 发射机被配置为基于来自导引矩阵的权重，在从第一无线设备发送到第二无线设备的第二分组上执行发射波束成形。