公开(公告)号：US20170048890A1

公开(公告)日：2017-02-16

申请号：US15337749

申请日：2016-10-28

Applicant: Marvell World Trade Ltd.

Inventor： Yakun Sun ,  Hongyuan Zhang

IPC: H04W74/08 ,  H04W8/24 ,  H04W52/50 ,  H04L5/00 ,  H04W74/00

Abstract: A communication device receives a trigger frame that is configured to: trigger a contention-based uplink orthogonal frequency multiple access (OFDMA) transmission by multiple communication devices, and indicate a predetermined length of the contention-based uplink OFDMA transmission, wherein the predetermined length corresponds to contention-based uplink OFDMA transmissions. Responsive to receiving the trigger frame, the communication device generates a data unit having the predetermined length, and responsive to receiving the trigger frame, transmits the data unit as part of a contention-based uplink OFDMA transmission.

Abstract translation: 通信设备接收触发帧，该触发帧被配置为：触发由多个通信设备进行的基于竞争的上行链路正交频率多址接入（OFDMA）传输，并且指示基于争用的上行链路OFDMA传输的预定长度，其中所述预定长度对应于 到基于竞争的上行链路OFDMA传输。 响应于接收到触发帧，通信设备生成具有预定长度的数据单元，并且响应于接收到触发帧，作为基于竞争的上行链路OFDMA传输的一部分发送数据单元。

公开(公告)号：US20160365942A1

公开(公告)日：2016-12-15

申请号：US15179150

申请日：2016-06-10

Applicant: Marvell World Trade Ltd.

Inventor： Yakun Sun ,  Hongyuan Zhang ,  Rui Cao ,  Sudhir Srinivasa

IPC: H04L1/00 ,  H04L5/00

CPC classification number: H04L1/0008 ,  H04L1/0009 ,  H04L1/0041 ,  H04L1/0057 ,  H04L5/0007 ,  H04L27/2602

Abstract: Systems, apparatuses and methods described herein provide a method for padding a signal extension of orthogonal frequency-division multiplexing (OFDM) symbols. A transceiver may obtain. a plurality of data symbols for transmission, and determine that a number of information bits for a last symbol of the plurality of data symbols is not an integer value. A special padding rule may be applied to add padding bits to the last symbol. A number of coded bits for the last symbol may be determined when the number of information bits for the last symbol has changed, and the plurality of data symbols for data transmission may be encoded based on the determined number of coded bits for the last symbol.

Abstract translation: 本文描述的系统，装置和方法提供了一种用于填充正交频分复用（OFDM）符号的信号扩展的方法。 收发器可以获得。 用于发送的多个数据符号，并且确定多个数据符号中的最后一个符号的信息比特数不是整数值。 可以应用特殊的填充规则来将填充位添加到最后一个符号。 当最后一个符号的信息位的数量已经改变时，可以确定用于最后一个符号的多个编码比特，并且可以基于确定的最后一个符号的编码比特数来编码用于数据传输的多个数据符号。

公开(公告)号：US20160330006A1

公开(公告)日：2016-11-10

申请号：US15215778

申请日：2016-07-21

Applicant: Marvell World Trade Ltd.

Inventor： Hongyuan Zhang ,  Sudhir Srinivasa

IPC: H04L5/00

CPC classification number: H04L5/0048 ,  H04L5/0053 ,  H04L27/2613 ,  H04W84/12

Abstract: A method for transmitting an 802.11ah packet is provided. A training field sequence is generated using control circuitry. A preamble for a packet is generated using the control circuitry. The preamble includes a training field symbol which includes the training field sequence. A portion of the training field sequence is within a plurality of guard tones of the training field symbol. The preamble is transmitted using transmit circuitry.

公开(公告)号：US09432154B2

公开(公告)日：2016-08-30

申请号：US14834210

申请日：2015-08-24

Applicant: Marvell World Trade Ltd.

Inventor： Hongyuan Zhang ,  Yong Liu

IPC: H04J11/00 ,  H04L5/00 ,  H04W72/04 ,  H04L27/26 ,  H04W84/12

CPC classification number: H04L5/001 ,  H04L5/0044 ,  H04L27/2602 ,  H04L27/2613 ,  H04L27/2621 ,  H04W72/04 ,  H04W72/048 ,  H04W84/12

Abstract: A method for generating OFDM signals is implemented in a device operating according to a communication protocol. The protocol defines non-duplicate mode data units corresponding to single component channels of a BSS channel, and non-duplicate mode data units corresponding to sets of adjacent component channels. Non-duplicate mode data units corresponding to a set of component channels have more lower-edge and/or upper-edge guard tones than non-duplicate mode data units corresponding to single component channels. The method includes determining that a duplicate mode will be utilized for an OFDM transmission in the set of component channels and, in response, generating a duplicate mode data unit. The duplicate mode data unit has fewer lower-edge and/or upper-edge guard tones than a non-duplicate mode data unit corresponding to a set of component channels, and includes one duplicate of the non-duplicate mode data unit corresponding to the single component channel for each adjacent component channel.

公开(公告)号：US09414432B2

公开(公告)日：2016-08-09

申请号：US14274475

申请日：2014-05-09

Applicant: MARVELL WORLD TRADE LTD.

Inventor： Hongyuan Zhang

IPC: H04W80/04 ,  H04L1/00 ,  H03M13/29 ,  H03M13/09 ,  H04L27/18

CPC classification number: H04W80/045 ,  H03M13/09 ,  H03M13/2933 ,  H04L1/003 ,  H04L1/0041 ,  H04L1/0059 ,  H04L1/0061 ,  H04L1/0072 ,  H04L1/0079 ,  H04L27/18 ,  H04W84/12

Abstract: A field of a preamble of the data unit is decoded using a tail biting technique, including decoding a received cyclic redundancy check (CRC) included in the field. A first CRC for the field is generated using a first CRC generation scheme, and a second CRC for the field is generated using a second CRC generation scheme. The first generated CRC and the second generated CRC are compared to the received CRC. It is determined that the data unit conforms to a first communication protocol when the first generated CRC matches the received CRC, and it is determined that the data unit conforms to a second communication protocol when the second generated CRC matches the received CRC.

Abstract translation: 使用尾部咬合技术对数据单元的前置码的字段进行解码，包括对包括在该字段中的接收到的循环冗余校验（CRC）进行解码。 使用第一CRC生成方案生成用于该字段的第一CRC，并且使用第二CRC生​​成方案生成用于该字段的第二CRC。 将第一个生成的CRC和第二个生成的CRC与接收到的CRC进行比较。 当第一个生成的CRC与接收的CRC匹配时，确定数据单元符合第一通信协议，并且当第二个生成的CRC与接收的CRC匹配时，确定数据单元符合第二通信协议。

公开(公告)号：US20160218787A1

公开(公告)日：2016-07-28

申请号：US15090550

申请日：2016-04-04

Applicant: Marvell World Trade Ltd.

Inventor： Hongyuan Zhang

IPC: H04B7/06 ,  H04L5/00 ,  H04W72/08

CPC classification number: H04B7/0617 ,  H04B7/0456 ,  H04B7/0619 ,  H04B7/0621 ,  H04B7/0626 ,  H04B7/0632 ,  H04L5/0048 ,  H04L25/0228 ,  H04L25/03904 ,  H04L25/0391 ,  H04W72/082

Abstract: Systems, apparatuses, and techniques for interference avoidance beamforming transmissions are described. A described apparatus can be configured to control a first channel sounding process with the first device to obtain first channel feedback regarding a wireless channel between the apparatus and the first device, determine, responsive to the first channel feedback, a first matrix to improve a performance of the beamforming transmission with respect to the first device, control a second channel sounding process with a second device to obtain second channel feedback regarding a wireless channel between the apparatus and the second device, determine, responsive to the second channel feedback, a second matrix to reduce interference leakage received by the second device during the beamforming transmission, and control the beamforming transmission to the first device based on the data and a steering matrix, the steering matrix being based on the first matrix and the second matrix.

Abstract translation: 描述了用于干扰避免波束成形传输的系统，装置和技术。 所描述的装置可以被配置为通过第一装置来控制第一信道探测过程以获得关于装置和第一装置之间的无线信道的第一信道反馈，响应于第一信道反馈确定第一矩阵以改善性能 控制与第二设备的第二信道探测过程，以获得关于设备和第二设备之间的无线信道的第二信道反馈，响应于第二信道反馈确定第二矩阵 以减少在波束形成传输期间由第二设备接收的干扰泄漏，并且基于该数据和导引矩阵来控制到第一设备的波束成形传输，导向矩阵基于第一矩阵和第二矩阵。

公开(公告)号：US20160173179A1

公开(公告)日：2016-06-16

申请号：US15048867

申请日：2016-02-19

Applicant: Marvell World Trade Ltd.

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

IPC: H04B7/04 ,  H04B7/06

CPC classification number: H04B7/0456 ,  H04B7/0413 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/0626 ,  H04B7/0634 ,  H04B7/0697 ,  H04L5/0048

Abstract: Systems, apparatuses, and techniques relating to wireless local area network devices are described. A described technique includes transmitting a sounding packet to wireless communication devices; receiving, in response to the sounding packet, feedback packets from the wireless communication devices, wherein the feedback packets collectively comprise beamforming feedback, the beamforming feedback being derived from received versions of the sounding packet; determining a steering matrix based on the beamforming feedback; and transmitting, within a frame, spatially steered data packets to the wireless communications devices. The spatially steered data packets can be based on the steering matrix and data streams intended respectively for the wireless communication devices. The spatially steered data packets can concurrently provide the data streams respectively within the frame to the wireless communication devices via different spatial wireless channels.

Abstract translation: 描述与无线局域网设备相关的系统，设备和技术。 所描述的技术包括：向无线通信设备发送探测分组; 响应于所述探测分组，从所述无线通信设备接收反馈分组，其中所述反馈分组共同地包括波束成形反馈，所述波束成形反馈从所述探测分组的接收版本导出; 基于所述波束成形反馈确定导向矩阵; 以及在帧内发送空间控制的数据分组到所述无线通信设备。 空间转向的数据分组可以基于分别用于无线通信设备的导向矩阵和数据流。 空间转向的数据分组可以通过不同的空间无线信道在帧内分别向无线通信设备提供数据流。

公开(公告)号：US09313754B2

公开(公告)日：2016-04-12

申请号：US13751388

申请日：2013-01-28

Applicant: Marvell World Trade Ltd.

Inventor： Hongyuan Zhang ,  Rohit U. Nabar ,  Songping Wu

IPC: H04B1/00 ,  H04W56/00 ,  H04B1/7073 ,  H04L27/26 ,  H04J13/00 ,  H04J13/10 ,  H04L5/00

CPC classification number: H04W56/001 ,  H04B1/7073 ,  H04B1/70735 ,  H04B2201/7073 ,  H04J13/0014 ,  H04J13/10 ,  H04L5/0016 ,  H04L27/2613 ,  H04L27/262 ,  H04L27/2656 ,  H04L27/2662 ,  H04W56/00

Abstract: A system and method of extracting data from data packets transmitted over a wireless network includes receiving a data packet having a preamble portion and a payload portion. The preamble portion is cross correlated with a first known spreading sequence to generate a first timing signal and the preamble portion is cross correlated with a second known spreading signal to generate a frame timing signal. An impulse is detected in the first timing signal and a first timing parameter is set based upon the detected impulse in the first timing signal. An impulse is detected in the frame timing signal and a frame timing parameter is set based upon the detected impulse in the frame timing signal. Data is extracted from the received payload portion according to the first timing parameter and the frame timing parameter.

公开(公告)号：US09306786B2

公开(公告)日：2016-04-05

申请号：US14523328

申请日：2014-10-24

Applicant: MARVELL WORLD TRADE LTD.

Inventor： Hongyuan Zhang

IPC: H04L27/00 ,  H04L27/26 ,  H04L5/00 ,  H04B1/04

CPC classification number: H04L27/2607 ,  H04B1/04 ,  H04L5/0023 ,  H04L5/005 ,  H04L27/2605 ,  H04L27/2613 ,  H04L27/2626

Abstract: Systems, methods, and other embodiments associated with a single stream wireless communication with a greenfield preamble that uses a short guard interval are described. According to one embodiment, a wireless communication device includes a transmitter configured to generate an orthogonal frequency-division multiplexing (OFDM) signal that comprises (i) a preamble and (ii) a data segment. The data segment follows the preamble. The data segment includes a plurality of data symbols that are each respectively preceded by a corresponding guard interval. A first guard interval preceding a first data symbol in the data segment has a first duration of time and each of the corresponding guard intervals that precede the remaining data symbols subsequent to the first data symbol in the data segment have a second duration of time. The second duration of time is shorter than the first duration of time.

Abstract translation: 描述了与使用短保护间隔的绿田前导码的单流无线通信相关联的系统，方法和其他实施例。 根据一个实施例，无线通信设备包括被配置为生成包括（i）前同步码和（ii）数据段）的正交频分复用（OFDM）信号的发射机。 数据段遵循序言。 数据段包括多个数据符号，每个数据符号各分别在相应的保护间隔之前。 数据段中的第一数据符号之前的第一保护间隔具有第一持续时间，并且在数据段中的第一数据符号之后的剩余数据符号之前的相应保护间隔中的每个相应保护间隔具有第二持续时间。 第二个持续时间比第一个持续时间短。

公开(公告)号：US09264287B2

公开(公告)日：2016-02-16

申请号：US13957309

申请日：2013-08-01

Applicant: Marvell World Trade Ltd.

Inventor： Sudhir Srinivasa ,  Hongyuan Zhang

IPC: H04K1/10 ,  H04L29/06 ,  H04L5/00 ,  H04L27/00 ,  H04L1/06 ,  H04W28/18 ,  H04W84/12 ,  H04L1/00

CPC classification number: H04L69/22 ,  H04L1/0056 ,  H04L1/0057 ,  H04L1/0059 ,  H04L1/0068 ,  H04L1/007 ,  H04L1/0625 ,  H04L5/00 ,  H04L27/00 ,  H04L29/0653 ,  H04W28/18 ,  H04W84/12

Abstract: 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 received. A number of padding bits are added to the information bits. The number of padding bits is determined based on respective virtual values of each of one or more encoding parameters. The information bits are parsed to a number of encoders and are encoded, using the number of encoders, to generate coded bits. The coded bits are padded such that padded coded bits correspond to respective true values of each of the one or more encoding parameters. The PHY data unit is generated to include the padded coded bits.

Abstract translation: 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，接收要包括在PHY数据单元中的信息比特。 多个填充位被添加到信息位。 基于一个或多个编码参数中的每一个的相应虚拟值来确定填充比特的数量。 信息比特被解析为多个编码器，并且使用编码器编号来编码以产生编码比特。 编码比特被填补，使得填充的编码比特对应于一个或多个编码参数中的每一个的相应真实值。 生成PHY数据单元以包括填充的编码比特。