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公开(公告)号：US10397033B2
公开(公告)日：2019-08-27
申请号：US14846186
申请日：2015-09-04
Applicant: Marvell World Trade Ltd.
Inventor： Hongyuan Zhang , Rohit U. Nabar , Raja Banerjea , Yong Liu , Sudhir Srinivasa , Hyukjoon Kwon
Abstract: A first legacy portion of a physical layer (PHY) preamble is generated, wherein the first legacy portion of the PHY preamble is generated to include a signal field having PHY parameters arranged in subfields according to a first legacy communication protocol. A second portion of the PHY preamble is generated according to a second communication protocol, wherein the second portion of the PHY preamble is generated to include a repetition of the signal field. A PHY data unit that includes the PHY preamble is generated, the PHY data unit being for transmission via a wireless communication channel.
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公开(公告)号：US09762413B2
公开(公告)日：2017-09-12
申请号：US15205735
申请日：2016-07-08
Applicant: Marvell World Trade Ltd.
Inventor： Sudhir Srinivasa , Hongyuan Zhang , Hyukjoon Kwon
IPC: H04L25/02 , H04B7/0417 , H04L1/06 , H04L5/00
CPC classification number: H04L25/0206 , H04B7/0417 , H04L1/0693 , H04L5/0005 , H04L5/0023 , H04L25/0202 , H04L25/022
Abstract: A first communication device receives a plurality of training signal fields in a preamble of a data unit transmitted by a second communication device, the plurality of training signal fields in orthogonal frequency division multiplexing (OFDM) symbols comprising data and pilot tones. The first communication device determines first channel estimate data corresponding to the data tones in the OFDM symbols, and uses pilot tones in the plurality of training signal fields to track at least one of i) a phase offset and ii) a frequency offset while receiving the plurality of training signal fields to improve the first channel estimate data. The first communication device generates feedback data that i) includes data corresponding to the first channel estimate data, and ii) excludes data corresponding to second channel estimate data for the pilot tones in the plurality of training signal fields, and transmits the feedback data to the second communication device.
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公开(公告)号：US09712365B2
公开(公告)日：2017-07-18
申请号：US14987316
申请日：2016-01-04
Applicant: Marvell World Trade Ltd.
Inventor： Hongyuan Zhang , Sudhir Srinivasa , Hyukjoon Kwon , Raja Banerjea
CPC classification number: H04L27/2646 , H04B7/0617 , H04B7/066 , H04L1/06 , H04L1/0618 , H04L1/0693 , H04L5/0023 , H04L5/0053 , H04L5/0057 , H04L25/0204 , H04L25/03343 , H04L2025/03414 , H04L2025/03426 , H04L2025/03808 , H04W24/10
Abstract: Channel data for a plurality of OFDM tones for one or more spatial or space-time streams are determined. A plurality of angle values associated with the one or more spatial or space-time streams and the one or more OFDM tones of the plurality of OFDM tones are determined. For each of the one or more spatial or space time streams, a per-tone signal to noise ratio (PT-SNR) associated with one or more OFDM tone of the plurality of OFDM tones is determined, and an average signal to noise ratio (avg-SNR) is determined by averaging signal to noise ratio (SNR) values corresponding to one or more OFDM tones of the plurality of OFDM tones. A feedback report is generated to include at least i) the plurality of angle values, ii) the PT-SNRs, and iii) the avg-SNR.
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公开(公告)号：US09419849B2
公开(公告)日：2016-08-16
申请号：US14930434
申请日：2015-11-02
Applicant: Marvell World Trade Ltd.
Inventor： Hongyuan Zhang , Rohit U. Nabar , Raja Banerjea , Yong Liu , Sudhir Srinivasa , Hyukjoon Kwon
CPC classification number: H04L29/0653 , H04L1/004 , H04L1/0046 , H04L1/0065 , H04L1/08 , H04L5/0007 , H04L27/2602 , H04L27/2613 , H04L27/2617 , H04L27/2621 , H04L27/2626 , H04L27/2636
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 encoded using a forward error correction (FEC) encoder. Also, the information bits are encoded according to a block coding scheme, where m copies of each bit are included in the information bits, and one or more bits in the m copies of each bit are flipped. The information bits are mapped to a plurality of constellation symbols, and a plurality of orthogonal frequency division multiplexing (OFDM) symbols are generated to include the plurality of constellation symbols. The PHY data unit is generated to include the plurality of OFDM symbols.
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，使用前向纠错（FEC）编码器对要包括在PHY数据单元中的信息比特进行编码。 此外，信息比特根据块编码方案进行编码，其中每个比特的m个副本被包括在信息比特中，并且每个比特的m个副本中的一个或多个比特被翻转。 信息比特被映射到多个星座符号，并且生成多个正交频分复用（OFDM）符号以包括多个星座符号。 生成PHY数据单元以包括多个OFDM符号。
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公开(公告)号：US09391811B2
公开(公告)日：2016-07-12
申请号：US14859993
申请日：2015-09-21
Applicant: Marvell World Trade Ltd.
Inventor： Sudhir Srinivasa , Hongyuan Zhang , Hyukjoon Kwon
CPC classification number: H04L25/0206 , H04B7/0417 , H04L1/0693 , H04L5/0005 , H04L5/0023 , H04L25/0202 , H04L25/022
Abstract: In a method for estimating a channel between a transmitter and a receiver in a communication network, a plurality of training signal fields are received at the receiver. Each training signal field includes a plurality of orthogonal frequency division multiplexing (OFDM) tones, and the OFDM tones include at least a plurality of training data tones and one or more pilot tones. Channel estimate data corresponding to the plurality of training data tones and the one or more pilot tones is determined. Channel estimate data corresponding to only a subset of the OFDM tones or data generated using the channel estimate data corresponding to the subset of OFDM tones is transmitted to the transmitter, wherein the subset excludes pilot tones.
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Patent Agency Ranking
公开(公告)号：US10075319B2
公开(公告)日：2018-09-11
申请号：US15651143
申请日：2017-07-17
Applicant: Marvell World Trade Ltd.
Inventor： Hongyuan Zhang , Sudhir Srinivasa , Hyukjoon Kwon , Raja Banerjea
CPC classification number: H04L27/2646 , H04B7/0617 , H04B7/066 , H04L1/06 , H04L1/0618 , H04L1/0693 , H04L5/0023 , H04L5/0053 , H04L5/0057 , H04L25/0204 , H04L25/03343 , H04L2025/03414 , H04L2025/03426 , H04L2025/03808 , H04W24/10
Abstract: Channel data for a plurality of OFDM tones for one or more spatial or space-time streams are determined. A plurality of angle values associated with the one or more spatial or space-time streams and the one or more OFDM tones of the plurality of OFDM tones are determined. For each of the one or more spatial or space time streams, a per-tone signal to noise ratio (PT-SNR) associated with one or more OFDM tone of the plurality of OFDM tones is determined, and an average signal to noise ratio (avg-SNR) is determined by averaging signal to noise ratio (SNR) values corresponding to one or more OFDM tones of the plurality of OFDM tones. A feedback report is generated to include at least i) the plurality of angle values, ii) the PT-SNRs, and iii) the avg-SNR.
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公开(公告)号：US09979565B2
公开(公告)日：2018-05-22
申请号：US15647627
申请日：2017-07-12
Applicant: Marvell World Trade Ltd.
Inventor： Sudhir Srinivasa , Hongyuan Zhang , Hyukjoon Kwon
IPC: H04L25/02 , H04L5/00 , H04B7/0417 , H04L1/06
CPC classification number: H04L25/0206 , H04B7/0417 , H04L1/0693 , H04L5/0005 , H04L5/0023 , H04L25/0202 , H04L25/022
Abstract: A first communication device receives a plurality of training signal fields in a preamble of a data unit transmitted by a second communication device, the plurality of training signal fields in orthogonal frequency division multiplexing (OFDM) symbols comprising data and pilot tones. The first communication device determines first channel estimate data corresponding to the data tones in the OFDM symbols, and uses pilot tones in the plurality of training signal fields to track at least one of i) a phase offset and ii) a frequency offset while receiving the plurality of training signal fields to improve the first channel estimate data. The first communication device generates feedback data that i) includes data corresponding to the first channel estimate data, and ii) excludes data corresponding to second channel estimate data for the pilot tones in the plurality of training signal fields, and transmits the feedback data to the second communication device.
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公开(公告)号：US20170317869A1
公开(公告)日：2017-11-02
申请号：US15651143
申请日：2017-07-17
Applicant: Marvell World Trade Ltd.
Inventor： Hongyuan Zhang , Sudhir Srinivasa , Hyukjoon Kwon , Raja Banerjea
CPC classification number: H04L27/2646 , H04B7/0617 , H04B7/066 , H04L1/06 , H04L1/0618 , H04L1/0693 , H04L5/0023 , H04L5/0053 , H04L5/0057 , H04L25/0204 , H04L25/03343 , H04L2025/03414 , H04L2025/03426 , H04L2025/03808 , H04W24/10
Abstract: Channel data for a plurality of OFDM tones for one or more spatial or space-time streams are determined. A plurality of angle values associated with the one or more spatial or space-time streams and the one or more OFDM tones of the plurality of OFDM tones are determined. For each of the one or more spatial or space time streams, a per-tone signal to noise ratio (PT-SNR) associated with one or more OFDM tone of the plurality of OFDM tones is determined, and an average signal to noise ratio (avg-SNR) is determined by averaging signal to noise ratio (SNR) values corresponding to one or more OFDM tones of the plurality of OFDM tones. A feedback report is generated to include at least i) the plurality of angle values, ii) the PT-SNRs, and iii) the avg-SNR.
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公开(公告)号：US09629128B2
公开(公告)日：2017-04-18
申请号：US14961420
申请日：2015-12-07
Applicant: Marvell World Trade Ltd.
Inventor： Sudhir Srinivasa , Hongyuan Zhang , Rohit U. Nabar , Hyukjoon Kwon
CPC classification number: H04W72/0406 , H04B7/0434 , H04B7/0452 , H04B7/0617 , H04B7/0634 , H04L25/0204 , H04L25/0228 , H04L25/0242 , H04W48/16 , H04W72/046 , H04W72/082
Abstract: A method in a communication network includes obtaining descriptions of a plurality of communication channels each communication channel associated with a different one of a plurality of receivers; and generating a plurality of steering vectors, one for each of the plurality of receivers, using the descriptions of the plurality of communication channels; wherein each steering vector is used to transmit data to a corresponding one of the plurality receivers via a plurality of antennas and over a corresponding one of the communication channels simultaneously and wherein each steering vector is used to communicate data on a different one of the plurality of communication channels, and wherein each steering vector is generated to reduce interference on a corresponding communication channel caused by simultaneous transmission of data on other communication channels.
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公开(公告)号：US20160119173A1
公开(公告)日：2016-04-28
申请号：US14987316
申请日：2016-01-04
Applicant: Marvell World Trade Ltd.
Inventor： Hongyuan Zhang , Sudhir Srinivasa , Hyukjoon Kwon , Raja Banerjea
CPC classification number: H04L27/2646 , H04B7/0617 , H04B7/066 , H04L1/06 , H04L1/0618 , H04L1/0693 , H04L5/0023 , H04L5/0053 , H04L5/0057 , H04L25/0204 , H04L25/03343 , H04L2025/03414 , H04L2025/03426 , H04L2025/03808 , H04W24/10
Abstract: Channel data for a plurality of OFDM tones for one or more spatial or space-time streams are determined. A plurality of angle values associated with the one or more spatial or space-time streams and the one or more OFDM tones of the plurality of OFDM tones are determined. For each of the one or more spatial or space time streams, a per-tone signal to noise ratio (PT-SNR) associated with one or more OFDM tone of the plurality of OFDM tones is determined, and an average signal to noise ratio (avg-SNR) is determined by averaging signal to noise ratio (SNR) values corresponding to one or more OFDM tones of the plurality of OFDM tones. A feedback report is generated to include at least i) the plurality of angle values, ii) the PT-SNRs, and iii) the avg-SNR.
Abstract translation: 确定用于一个或多个空间或时空流的多个OFDM音调的信道数据。 确定与一个或多个空间或时空流相关联的多个角度值以及多个OFDM音调中的一个或多个OFDM音调。 对于一个或多个空间或空间时间流中的每一个，确定与多个OFDM音调中的一个或多个OFDM音调相关联的每音调信噪比（PT-SNR），并且确定平均信噪比 avg-SNR）通过对应于多个OFDM音调中的一个或多个OFDM音调的信噪比（SNR）值求平均值来确定。 生成反馈报告至少包括i）多个角度值，ii）PT-SNR，以及iii）平均SNR。
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