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公开(公告)号：US10122563B1
公开(公告)日：2018-11-06
申请号：US15186011
申请日：2016-06-17
Applicant: Marvell International Ltd.
Inventor： Yakun Sun , Hongyuan Zhang
Abstract: A method for decoding an orthogonal frequency division multiplex (OFDM) data unit is described. OFDM symbols of the OFDM data unit are received that include a first OFDM symbol that corresponds to a legacy signal field followed by a second OFDM symbol that corresponds to a candidate signal field. It is determined whether the candidate signal field corresponds to a repetition of the legacy signal field. At least some of the OFDM symbols of the OFDM data unit are decoded according to a first communication protocol indicated by the determination of whether the candidate signal field corresponds to the repetition of the legacy signal field.
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公开(公告)号：US10009781B1
公开(公告)日：2018-06-26
申请号：US14697106
申请日：2015-04-27
Applicant: Marvell International LTD.
Inventor： Lei Wang , Yakun Sun , Liwen Chu , Jinjing Jiang , Hongyuan Zhang , Hui-Ling Lou
CPC classification number: H04W24/08 , H04L1/00 , H04L1/1692 , H04L1/1825 , H04L43/12 , H04W28/0231 , H04W28/0284 , H04W72/02 , H04W84/12
Abstract: A wireless device including a metric generating module and a parameter selecting module. The metric generating module is configured to generate a first metric based on (i) a number of frames retransmitted over a first time period, and (ii) a total number of frames transmitted over the first time period. The metric generating module is configured to generate a second metric based on (i) a number of frames received more than once over a second time period, and (ii) a total number of frames received over the second time period. The parameter selecting module is configured to select one or more transmission parameters to transmit data based on one or more of the first metric and the second metric.
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公开(公告)号：US09942008B1
公开(公告)日：2018-04-10
申请号：US14618692
申请日：2015-02-10
Applicant: Marvell International Ltd.
Inventor： Yakun Sun , Hongyuan Zhang , Lei Wang , Hui-Ling Lou
CPC classification number: H04L1/1887 , H04L1/08 , H04W52/0248
Abstract: Systems and methods are provided for extending the range of a transmitter by time repetition. The systems and methods may include receiving, at the transmitter block, and input of signals corresponding to data for transmission. The systems and methods may further include repeating the signals, reordering the signals, and operating on the signals in such a way that an output of signals from the transmitter block is dependent on a time-varying function and corresponds to the data for transmission.
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公开(公告)号：US09910129B1
公开(公告)日：2018-03-06
申请号：US14489678
申请日：2014-09-18
Applicant: Marvell International Ltd.
Inventor： Sudhir Srinivasa , Hongyuan Zhang , Sergey Timofeev , Hemabh Shekhar , Atul Salhotra
CPC classification number: G01S5/021 , H04L43/0864 , H04L43/50
Abstract: A method of calibrating analog transceiver delay includes generating a signal in a portion of a first device to arrive at a first known time at analog transmit circuitry of the first device, transmitting the signal from the analog transmit circuitry of the first device, receiving the transmitted signal, and deriving transceiver delay from the received signal. The transmitting may be performed via a closed loop to analog receiver circuitry of the first device, detecting the signal at a second known time at an output of the analog receiver circuitry of the first device. The transmitting also may be performed wirelessly to receiver circuitry of a second device placed at a predetermined distance from the first device, detecting the received signal at a second known time at the receiver circuitry of the second device. Transceiver delay can be determined from transit time and apportioned between transmit delay and receive delay.
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公开(公告)号：US09844076B1
公开(公告)日：2017-12-12
申请号：US15275952
申请日：2016-09-26
Applicant: Marvell International Ltd.
Inventor： Yong Liu , Hongyuan Zhang
CPC classification number: H04W74/0816 , H04W72/0406 , H04W72/0446 , H04W72/046 , H04W74/006 , H04W74/04 , H04W84/12
Abstract: A first communication device determines that each second communication device in a plurality of second communication devices has respective data to be transmitted to the first communication device. The first communication device transmits a request to the plurality of second communication devices to transmit data to the first communication device simultaneously during a transmit opportunity period of the first communication device. The first communication device receives data transmitted simultaneously by the plurality of second communication devices during the transmit opportunity period of the first communication device.
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Patent Agency Ranking
公开(公告)号：US09843097B1
公开(公告)日：2017-12-12
申请号：US14325027
申请日：2014-07-07
Applicant: MARVELL INTERNATIONAL LTD.
Inventor： Hongyuan Zhang , Sudhir Srinivasa
CPC classification number: H04B7/0421 , H04B7/0617 , H04B7/0626 , H04B17/11 , H04L1/1607 , H04L5/0023 , H04L5/0048 , H04L5/0064 , H04L27/2613
Abstract: In a method for beamforming in a multiple input multiple output (MIMO) communication system, a data unit from a second communication device is received at a first communication device via a MIMO communication channel. Training signals in the data unit are buffered in a memory of the first communication device, wherein buffering assumes that the data unit spans a bandwidth greater than a maximum bandwidth of a legacy first communication protocol. The first communication device determines whether the data unit is formatted according to a duplication mode in which a bandwidth portion of the data unit conforms to the legacy first communication protocol. If it is determined that the data unit is formatted according to the duplication mode, the first communication device utilizes a transmit beamforming matrix generated using the training signals buffered assuming that the data unit spans the bandwidth greater than the maximum bandwidth of the legacy first communication protocol.
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公开(公告)号：US09692576B1
公开(公告)日：2017-06-27
申请号：US14693603
申请日：2015-04-22
Applicant: Marvell International Ltd.
Inventor： Yakun Sun , Liwen Chu , Lei Wang , Jinjing Jiang , Hongyuan Zhang , Hui-Ling Lou
CPC classification number: H04L5/0053 , H04L1/08 , H04L5/0094 , H04W74/006 , H04W84/12
Abstract: Methods and systems are disclosed for transmitting high efficiency signals. The method includes creating a first signal and a second signal each comprising a plurality of information fields. The method includes determining respective intervals for repeated transmissions of each of the first signal and the second signal. The method includes determining whether a first transmission of the repeated transmissions of the first signal will be consecutively followed by a second transmission of the repeated transmissions of the second signal. The method includes adding scheduling information, based in part on determining the first transmission will be consecutively followed by the second transmission, indicating that the first transmission will be consecutively followed by the second transmission.
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公开(公告)号：US09655123B1
公开(公告)日：2017-05-16
申请号：US14880931
申请日：2015-10-12
Applicant: Marvell International Ltd.
Inventor： Raja Banerjea , Hongyuan Zhang
CPC classification number: H04W72/0473 , H04B7/0697
Abstract: A first communication device measures respective receive power levels of signals transmitted by second communication devices in a plurality of second communication devices. The first communication device selects a group of two or more second communication devices from the plurality of second communication devices for simultaneous transmission of respective data to the first communication device, wherein the group is selected i) so that respective measured receive power levels of the signals from any two second communication devices in the group differ by no more than a predetermined amount, and ii) without instructing any second communication device in the group to adjust a transmit signal power level. The first communication device generates a communication frame that includes information indicative of the group, and transmits the communication frame to prompt the group to simultaneously transmit respective data to the first communication device.
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公开(公告)号：US09614707B1
公开(公告)日：2017-04-04
申请号：US15005150
申请日：2016-01-25
Applicant: Marvell International Ltd.
Inventor： Hongyuan Zhang , Rohit U. Nabar , Sudhir Srinivasa
CPC classification number: H04L27/2602 , H04B7/0684 , H04L1/0625 , H04L1/0675 , H04L25/0204 , H04L25/0224 , H04W28/0263 , H04W72/04 , H04W72/1263 , H04W84/12
Abstract: In generating a data unit for transmission via a communication channel, a preamble of the data unit is generated, including i) generating a set of training fields, and ii) mapping each training field in the set of training fields to a plurality of space-time streams. When the set of training fields consist of four training fields, each training field in the set of training fields is mapped to four space-time streams according to a first space-time stream mapping matrix. When the set of training fields consists of six training fields, each training field in the set of training fields is mapped to six space-time streams according to a second space-time stream mapping matrix, wherein the first space-time stream mapping matrix is not a submatrix of the second space-time stream mapping matrix. A data portion of the data unit is generated so that a receiver device can receive the data portion via a corresponding number of space-time streams using channel information derived from the set of training fields.
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公开(公告)号：US09450743B1
公开(公告)日：2016-09-20
申请号：US14554144
申请日：2014-11-26
Applicant: MARVELL INTERNATIONAL LTD.
Inventor： Liwen Chu , Hui-Ling Lou , Hongyuan Zhang
CPC classification number: H04L69/22 , H04L5/0091 , H04L5/1438
Abstract: Apparatus, methods, and other embodiments associated with duplex mode enabling frame headers are described. According to one embodiment, an apparatus includes a transceiver and duplex logic. The duplex logic is configured to receive data to be transmitted by the transceiver to a device and generate a header for a frame. The header includes at least one bit that encodes information used to enable full duplex communication with the device. The duplex logic is configured to provide the frame to the transceiver to transmit the frame.
Abstract translation: 描述与双工模式启用帧头相关联的装置，方法和其他实施例。 根据一个实施例，一种装置包括收发器和双工逻辑。 双工逻辑被配置为接收要由收发器发送到设备的数据并生成帧的报头。 标题包括至少一个比特，其编码用于启用与设备的全双工通信的信息。 双工逻辑被配置为将帧提供给收发器以发送帧。
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