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11 条记录 (耗时 0.017 秒)

    Adaptive orthogonal frequency division multiplexing (OFDM) numerology in a wireless communication network
    1.
    发明授权
    Adaptive orthogonal frequency division multiplexing (OFDM) numerology in a wireless communication network 有权

    公开(公告)号：US11855818B1

    公开(公告)日：2023-12-26

    申请号：US14701208

    申请日：2015-04-30

    申请人： Marvell Asia Pte Ltd

    发明人： Yakun Sun ,  Hongyuan Zhang ,  Mingguang Xu ,  Hui-Ling Lou

    IPC分类号： H04L27/26 ,  H04L5/00 ,  H04W84/12

    CPC分类号： H04L27/2605 ,  H04L5/0007 ,  H04W84/12

    摘要： In a method for adapting an orthogonal frequency division multiplexing (OFDM) numerology configuration for use in a communication network one or more OFDM numerology configurations are adaptively selected at a first communication device to be used in communication with one or more second communication devices. Adaptively one or more OFDM numerology configurations includes selecting at least one combination of two or more of (i) a guard interval duration, (ii) a tone spacing, (iii) a starting location of the selected guard interval duration, and (iv) a starting location of the selected tone spacing. A physical layer (PHY) data unit to be transmitted to a second communication device is generated at the first communication device. The PHY data unit is generated using one of the one or more adaptively selected OFDM numerology configurations to generate OFDM symbols of at least a portion of the PHY data unit.

    Explicit multiuser beamforming training in a wireless local area network
    2.
    发明授权
    Explicit multiuser beamforming training in a wireless local area network 有权

    公开(公告)号：US11411627B1

    公开(公告)日：2022-08-09

    申请号：US16985870

    申请日：2020-08-05

    申请人： Marvell Asia Pte, Ltd.

    发明人： Liwen Chu ,  Yakun Sun ,  Rui Cao ,  Hongyuan Zhang ,  Hui-Ling Lou

    IPC分类号： H04B7/06 ,  H04L5/00 ,  H04L27/26 ,  H04B7/0452 ,  H04W84/12

    摘要： A first communication device receives a null data packet (NDP) transmitted by a second communication device as part of a multi-user beamforming training transmission sequence. The NDP includes a set of one or more training signals that allow the first communication device to estimate a communication channel from the second communication device to the first communication device. The first communication device generates, based on the set of one or more training signals included in the NDP received from the second communication device, an aggregate media access control protocol data unit (A-MPDU) to include a plurality of fragments of beamforming training information for the second communication device. No single fragment among the plurality of fragments includes an entirety of the beamforming training information. The first communication device transmits the A-MPDU to the second communication device in a single physical layer (PHY) data unit and as part of a multi-user transmission.

    Physical layer frame format for WLAN
    3.
    发明授权
    Physical layer frame format for WLAN 有权

    公开(公告)号：US11962444B2

    公开(公告)日：2024-04-16

    申请号：US17491525

    申请日：2021-09-30

    申请人： Marvell Asia Pte, Ltd.

    发明人： Hongyuan Zhang ,  Mingguang Xu ,  Yakun Sun

    IPC分类号： H04L27/26 ,  H04L69/22 ,  H04W84/12

    CPC分类号： H04L27/2602 ,  H04L27/2603 ,  H04L27/2613 ,  H04L69/22 ,  H04W84/12 ,  H04L27/2605

    摘要： A first communication device generates a PHY preamble of a PHY data unit to include a first orthogonal frequency division multiplexing (OFDM) symbol corresponding to a legacy signal field. The legacy signal field includes i) a length subfield, and ii) a rate subfield. The length subfield and the rate subfield indicate a duration of the PHY data unit, and the legacy signal field is formatted according to a legacy second communication protocol. The first communication device generates the PHY preamble of a PHY data unit to include a second OFDM symbol corresponding to a duplicate of the legacy signal field, and a plurality of additional OFDM symbols corresponding to a non-legacy signal field. The first communication device sets the length subfield of the legacy signal field to a length value such that a remainder value resulting from dividing the length value by three, indicates that the PHY data unit conforms to the first communication protocol.

    Systems and methods for cross-channel scheduling of high efficiency (HE) multi-user (MU) frame transmission
    4.
    发明授权
    Systems and methods for cross-channel scheduling of high efficiency (HE) multi-user (MU) frame transmission 有权

    公开(公告)号：US11005617B2

    公开(公告)日：2021-05-11

    申请号：US16226177

    申请日：2018-12-19

    申请人： Marvell Asia Pte. Ltd.

    发明人： Yakun Sun ,  Hongyuan Zhang ,  Lei Wang

    IPC分类号： H04L5/00 ,  H04W72/04 ,  H04W28/08

    摘要： Embodiments described herein provide a method for cross-channel scheduling of high efficiency (HE) multi-user (MU) frame transmission. In some embodiments, channel information and client station information may be obtained for data transmission. An MU frame containing a data field of a first type and two data fields of a second type may be configured to carry scheduling information relating to one or more channels for the data transmission. It may be determined that a current scheduling setting of the two data fields of the second type leads to unbalanced payload between the one or more channels. The two data fields of the second type may then be adjusted for a balanced channel mapping, and the data field of the first type may be adjusted to reflect the balanced channel mapping. Data based on the adjusted data field of the first type and the adjusted two data fields of the second type may be transmitted via the one or more channels.

    Systems and methods to reduce peak to average power ratio for dual sub-carrier modulated transmissions in a wireless network
    6.
    发明授权
    Systems and methods to reduce peak to average power ratio for dual sub-carrier modulated transmissions in a wireless network 有权

    公开(公告)号：US11349696B1

    公开(公告)日：2022-05-31

    申请号：US16940718

    申请日：2020-07-28

    申请人： MARVELL ASIA PTE, LTD.

    发明人： Jie Huang ,  Hongyuan Zhang ,  Yakun Sun ,  Rui Cao

    IPC分类号： G08C17/00 ,  H04L27/26 ,  H04L27/18 ,  H04W84/12

    摘要： A system includes a modulator, a repetition module, and a phase rotation module. The modulator is configured to (i) modulate data using a first modulation scheme and dual sub-carrier modulation, and (ii) generate modulated symbols for transmission on a plurality of subcarriers. The dual sub-carrier modulation modulates the same information on a pair of subcarriers. The repetition module is configured to repeat the modulated symbols from a first half of the plurality of subcarriers to a second half of the plurality of subcarriers. The phase rotation module is configured to rotate phase of the modulated symbols on selected subcarriers of the second half of the plurality of subcarriers. The selected subcarriers of the second half of the plurality of subcarriers include at least one half of the second half of the plurality of subcarriers.

    Operation with bandwidth-limited devices in a wireless network
    8.
    发明授权
    Operation with bandwidth-limited devices in a wireless network 有权

    公开(公告)号：US11582752B2

    公开(公告)日：2023-02-14

    申请号：US17229580

    申请日：2021-04-13

    申请人： Marvell Asia Pte, Ltd.

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

    IPC分类号： H04W72/04 ,  H04L5/00 ,  H04L29/08 ,  H04W74/06 ,  H04W84/12 ,  H04W72/0453 ,  H04L69/323

    摘要： 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.