公开(公告)号：US20130235828A1

公开(公告)日：2013-09-12

申请号：US13867487

申请日：2013-04-22

Applicant: MARVELL WORLD TRADE LTD.

Inventor： Yakun Sun ,  Jungwon Lee

IPC: H04L1/18

CPC classification number: H04L1/1812 ,  H04B7/0413 ,  H04B7/0669 ,  H04L1/0001 ,  H04L1/0618 ,  H04L1/0625 ,  H04L1/1816 ,  H04L1/1822 ,  H04L1/1825 ,  H04L1/189 ,  H04L1/1893 ,  H04L1/1896 ,  H04L27/2601 ,  H04L27/2602 ,  H04L27/2608

Abstract: A method includes mapping, based on a first antenna mapping, a plurality of symbols to a plurality of antennas for transmitting a first data unit to a receiver, mapping, based on a first subcarrier mapping, the plurality of symbols to a plurality of subcarriers for transmitting the first data unit, and determining whether the receiver has successfully received the first data unit. The method also includes, in response to determining that the receiver has not successfully received the first data unit, (i) mapping, based on a second antenna mapping, the plurality of symbols to the plurality of antennas for transmitting a second data unit to the receiver, (ii) mapping, based on a different, second subcarrier mapping, the plurality of symbols to the plurality of subcarriers for transmitting the second data unit, and (iii) causing the second subcarrier mapping to be communicated to the receiver.

Abstract translation: 一种方法包括：基于第一天线映射将多个符号映射到用于向接收机发送第一数据单元的多个天线，基于第一子载波映射将所述多个符号映射到多个子载波，用于 发送第一数据单元，以及确定接收机是否已成功接收到第一数据单元。 该方法还包括响应于确定接收机尚未成功接收到第一数据单元，（i）基于第二天线映射将多个符号映射到多个天线，以将第二数据单元发送到 接收机，（ii）基于不同的第二子载波映射将多个符号映射到用于发送第二数据单元的多个子载波，以及（iii）使第二子载波映射传送到接收机。

公开(公告)号：US20130102256A1

公开(公告)日：2013-04-25

申请号：US13654925

申请日：2012-10-18

Applicant: Marvell World Trade Ltd.

Inventor： Raphael Cendrillon ,  Yakun Sun ,  Jiwoong Choi ,  Hui-Ling Lou

IPC: H04B7/08

CPC classification number: H04B7/08 ,  H04B7/0851 ,  H04B7/0854 ,  H04J11/0036

Abstract: Systems and methods for suppressing interference from a data signal received at a receiving device, where the receiving device has two or more receive antennas, are provided. Characteristics of a channel are estimated, the channel being a channel through which the data signal was transmitted by a transmitting device to the receiving device. A spatial correlation of interference and noise received at the two or more receive antennas of the receiving device is determined based on the estimated characteristics of the channel. The spatial correlation indicates how the interference and noise received at a particular one of the receive antennas is related to the interference and noise received at another one of the receive antennas. The spatial correlation of the interference and noise is used to suppress interference and noise from the data signal received at the receiving device.

Abstract translation: 提供了用于抑制在接收设备处接收的数据信号的干扰的系统和方法，其中接收设备具有两个或更多个接收天线。 估计信道的特性，信道是数据信号通过发送设备发送到接收设备的信道。 基于估计的信道特性，确定在接收设备的两个或更多个接收天线处接收的干扰和噪声的空间相关性。 空间相关性指示在特定一个接收天线处接收的干扰和噪声与在另一个接收天线处接收的干扰和噪声有关。 使用干扰和噪声的空间相关性来抑制在接收设备处接收的数据信号的干扰和噪声。

公开(公告)号：US11006416B2

公开(公告)日：2021-05-11

申请号：US16262355

申请日：2019-01-30

Applicant: Marvell World Trade Ltd.

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

IPC: H04W72/04 ,  H04L5/00 ,  H04L29/08 ,  H04W74/06 ,  H04W84/12

Abstract: A first communication device allocates respective portions of a communication channel, that includes at least one primary component channel and one or more non-primary component channels, to a plurality of second communication devices, including a bandwidth-limited second communication device configured to operate with a maximum bandwidth that is less than a full bandwidth of the communication channel. The bandwidth-limited second communication device is operating in a particular component channel, and allocation of a frequency portion to the bandwidth-limited second communication device is restricted to the particular component channel. The first communication device transmits a data unit that includes one or both of: respective data for the second communication devices in the respective frequency portions allocated to the respective second communication devices, and one or more trigger frames to prompt transmission of respective data by the second communication devices in the respective frequency portions allocated to the respective second communication devices.

公开(公告)号：US10587375B2

公开(公告)日：2020-03-10

申请号：US16384418

申请日：2019-04-15

Applicant: Marvell World Trade Ltd.

Inventor： Yakun Sun ,  Lei Wang ,  Jinjing Jiang ,  Liwen Chu ,  Hongyuan Zhang

IPC: H04L5/00 ,  H04L1/00 ,  H04L27/12 ,  H04L27/26 ,  H04W84/12

Abstract: A first communication device generates a physical layer (PHY) preamble of a PHY data unit. A signal field of the PHY preamble includes i) a common block of information bits having information for multiple second communication devices and ii) a plurality of user blocks of information bits, each user block having information for a respective one of the multiple second communication devices. The common block includes a frequency resource unit allocation field that defines a plurality of frequency resource units corresponding to a PHY payload of the PHY data unit. The user blocks respectively correspond to frequency resource units defined by the frequency resource unit allocation field. Each user block includes an indication of a modulation and coding scheme (MCS) used in the corresponding frequency resource unit. Each group of two user blocks is encoded as a respective second encoded block to allow the multiple second communication devices to efficiently decode the signal field.

公开(公告)号：US10574418B2

公开(公告)日：2020-02-25

申请号：US15487766

申请日：2017-04-14

Applicant: Marvell World Trade Ltd.

Inventor： Liwen Chu ,  Yakun Sun ,  Leilei Song ,  Ken Kinwah Ho ,  Tianan Tim Ma ,  Li-Fu Jeng ,  Seong Yong Park ,  Foo Keong Tang

IPC: H04L5/00 ,  H04W72/04 ,  H04W72/08 ,  H04W88/08 ,  H04W84/12

Abstract: A first communication device receives a first data unit from a second communication device via one or more communication channels. The first data unit includes an indication of a first set of one or more sub-channels allocated to the first communication device, and the first data unit is configured to prompt the first communication device to transmit channel availability information as part of a subsequent orthogonal frequency division multiple access (OFDMA) transmission. The first communication device determines channel availability information for the one or more communication channels, and when the first communication device determines that at least one of the communication channels is idle, the first communication device transmits a second data unit to the second communication device in one or more sub-channels allocated to the first communication device as part of the OFDMA transmission, the second data unit including the channel availability information.

公开(公告)号：US10511471B2

公开(公告)日：2019-12-17

申请号：US16126678

申请日：2018-09-10

Applicant: Marvell World Trade Ltd.

Inventor： Hongyuan Zhang ,  Yakun Sun ,  Hui-Ling Lou ,  Liwen Chu

IPC: H04B17/24 ,  H04L27/26 ,  H04W4/08 ,  H04L5/00 ,  H04W72/08 ,  H04B17/318 ,  H04B17/336 ,  H04B7/06 ,  H04W72/04 ,  H04W84/12

Abstract: A first communication device transmits a null data packet (NDP) to multiple second communication devices. The NDP spans a channel frequency bandwidth. The first communication device receives a plurality of sounding feedback packets from the second communication devices. Each sounding feedback packet includes one or more signal-to-noise ratio (SNR) indicators corresponding to one or more respective groups of orthogonal frequency division multiplexing (OFDM) subcarriers, and the SNR indicators correspond to reception of the NDP at the plurality of second communication devices. Each sounding feedback packet in the plurality of sounding feedback packets includes a respective indication of OFDM subcarriers for which the sounding feedback packet includes SNR information, and at least one sounding feedback packet from among the plurality of sounding feedback packets does not include SNR information for all OFDM subcarriers via which the NDP was transmitted.

公开(公告)号：US10404839B2

公开(公告)日：2019-09-03

申请号：US15375450

申请日：2016-12-12

Applicant: Marvell World Trade Ltd.

Inventor： Yakun Sun ,  Hongyuan Zhang

IPC: H04J3/24 ,  H04L29/06 ,  H04L1/00 ,  H04L5/00 ,  H04W72/04 ,  H04L27/26 ,  H04L29/08 ,  H04W84/12

Abstract: In a method of generating a field of a physical layer (PHY) preamble of a data unit, information bits to be included in the field are generated. Respective sets of tail bits are appended after respective sets of information bits corresponding to respective ones of a plurality of groups of subfields of the field, each group including one or more of the subfields of the field, to generate an encoder input bit stream. One or more padding bits are added to the encoder input stream to generate a padded encoder input bit stream, the one or more padding bits to ensure an integer number of puncturing blocks in an encoded output bit stream. The padded encoder input bit stream is encoded to generate the encoded output bit stream. The field is generated to include at least some bits from the encoded output bit stream.

公开(公告)号：US10375679B2

公开(公告)日：2019-08-06

申请号：US14961635

申请日：2015-12-07

Applicant: Marvell World Trade Ltd.

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

IPC: H04W72/04 ,  H04L5/00 ,  H04W4/06 ,  H04L27/26 ,  H04W72/00

Abstract: Multiple trigger frames are generated at a first communication device to trigger an uplink orthogonal frequency multiple access (OFDMA) transmission by multiple second communication devices. The multiple trigger frames include a broadcast trigger frame that includes information to indicate transmission parameters for a first subset of the second communication devices, and one or more unicast trigger frames, each of the one or more unicast trigger frame including information to indicate transmission parameters for a particular second communication device in a second subset of the second communication devices. The broadcast trigger frame is transmitted, in a first frequency portion of a downlink OFDMA transmission, to the first subset of the second communication devices, and respective unicast trigger frames are transmitted, in respective second frequency portions of the downlink OFDMA transmission, to the second subset of the second communication devices.

公开(公告)号：US10356815B2

公开(公告)日：2019-07-16

申请号：US15487812

申请日：2017-04-14

Applicant: Marvell World Trade Ltd.

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

IPC: H04W74/02 ,  H04L29/06 ,  H04W48/10 ,  H04W74/08 ,  H04W84/12 ,  H04W74/00

Abstract: A first communication device associated with a first communication network determines that a second communication device associated with a second communication network is located proximate to the first communication device. The first communication device generates a data unit that includes information indicating i) a color identifier of the second communication network, the color identifier usable to identify transmissions from the second communication network, and ii) that a dynamic clear channel assessment (CCA) procedure should not be used for transmissions from the second communication network. The first communication device transmits the data unit to at least one other communication device associated with the first communication network such that the at least one other communication device associated with the first communication network does not use the dynamic CCA procedure for transmissions identified as being from the second communication network.

公开(公告)号：US20190207704A1

公开(公告)日：2019-07-04

申请号：US16295499

申请日：2019-03-07

Applicant: Marvell World Trade Ltd.

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

IPC: H04L1/00 ,  H04L27/26 ,  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.