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    Method and apparatus for providing different types of physical layer devices access to a wireless medium
    12.
    发明授权
    Method and apparatus for providing different types of physical layer devices access to a wireless medium 有权
    用于提供不同类型的物理层设备访问无线介质的方法和装置

    公开(公告)号：US09148873B1

    公开(公告)日：2015-09-29

    申请号：US13917262

    申请日：2013-06-13

    Applicant: Marvell International Ltd.

    Inventor： Yong Liu ,  Hongyuan Zhang

    IPC: H04W72/04

    CPC classification number: H04W72/04 ,  H04L1/004 ,  H04W28/06 ,  H04W80/02

    Abstract: A wireless network includes a first station and a second station. The first station includes a media access control circuit configured to provide a frame of data to be transmitted on a communication channel, and a physical layer device configured to receive the frame of data and transmit the frame of data on the communication channel. The frame of data is transmitted according to a first short interframe space (SIFS) or a second SIFS, and the first SIFS has a duration that is different from that of the second SIFS. The second station is configured to determine whether the first station transmitted the frame of data according to the first SIFS or the second SIFS and transmit a response to the frame of data based on the determination of whether the first station transmitted the frame of data according to the first SIFS or the second SIFS.

    Abstract translation: 无线网络包括第一站和第二站。 第一站包括媒体访问控制电路，被配置为提供要在通信信道上发送的数据帧;以及物理层设备，被配置为接收数据帧并在通信信道上发送数据帧。 数据帧根据第一短帧间间隔（SIFS）或第二SIFS发送，并且第一SIFS具有与第二SIFS不同的持续时间。 第二站被配置为基于第一站是否根据第一SIFS或第二SIFS发送数据帧，确定第一站是否发送数据帧，并根据第 第一个SIFS或第二个SIFS。

    802.11ah duty cycle based channel access priorities
    14.
    发明授权
    802.11ah duty cycle based channel access priorities 有权
    基于802.11ah占空比的通道访问优先级

    公开(公告)号：US09445349B1

    公开(公告)日：2016-09-13

    申请号：US13955776

    申请日：2013-07-31

    Applicant: Marvell International Ltd.

    Inventor： Yong Liu

    IPC: G06F15/173 ,  H04W48/02 ,  H04L5/00

    CPC classification number: H04W48/08 ,  H04L5/0037 ,  H04L5/0058 ,  H04L5/0076 ,  H04W8/24 ,  H04W48/02 ,  H04W52/0209 ,  H04W52/0219 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146

    Abstract: A system includes an access point and a client station. The access point is configured to control access to a communication channel of a wireless network, define a first power category and at least one second power category, each of the first power category and the at least one second power category having a respective access priority associated with access to the communication channel, and communicate a requirement for assignment to the first power category. The client station is configured to determine whether an operating characteristic of the client station meets the requirement for assignment to the first power category, and transmit, in response to a determination that the operating characteristic meets the requirements, a request to the access point to be assigned to the first power category.

    Abstract translation: 系统包括接入点和客户站。 接入点被配置为控制对无线网络的通信信道的访问，定义第一功率类别和至少一个第二功率类别，第一功率类别和至少一个第二功率类别中的每一个具有相关联的接入优先级 访问通信信道，并传达对第一个功率类别的分配要求。 客户站被配置为确定客户端站的操作特性是否满足分配给第一功率类别的要求，并且响应于操作特性满足要求的确定，发送对接入点的请求为 分配到第一个电源类别。

    Beamforming training techniques for MIMO systems
    15.
    发明授权
    Beamforming training techniques for MIMO systems 有权
    MIMO系统的波束成形训练技术

    公开(公告)号：US08644184B1

    公开(公告)日：2014-02-04

    申请号：US13716928

    申请日：2012-12-17

    Applicant: Marvell International Ltd.

    Inventor： Hongyuan Zhang ,  Hui-Ling Lou ,  Yong Liu ,  Songping Wu

    IPC: H04B7/00

    CPC classification number: H04B7/0617 ,  H04B7/0626 ,  H04B7/0634

    Abstract: A set of multiple training signals to be transmitted via multiple antennas over a communication channel are generated, and a different antenna weight vector (AWV) from a first set of AWVs is applied to each of the multiple training signals as the training signals are transmitted during a current iteration of a beamforming procedure. Feedback generated using the multiple training signals is received. A second set of AWVs to be used in a next iteration of the beamforming procedure is determined using the feedback.

    Abstract translation: 生成将通过通信信道经由多个天线发送的一组多个训练信号，并且当训练信号被传送到多个训练信号中时，来自第一组AWV的不同天线加权矢量（AWV）被施加到多个训练信号中的每一个 波束形成过程的当前迭代。 接收使用多个训练信号产生的反馈。 使用反馈确定在波束形成过程的下一次迭代中使用的第二组AWV。

    Midamble for WLAN PHY packets
    16.
    发明授权
    Midamble for WLAN PHY packets 有权

    公开(公告)号：US11006480B1

    公开(公告)日：2021-05-11

    申请号：US16525420

    申请日：2019-07-29

    Applicant: Marvell International Ltd.

    Inventor： Hongyuan Zhang ,  Rohit U. Nabar ,  Sudhir Srinivasa ,  Raja Banerjea ,  Yong Liu

    IPC: H04W84/12 ,  H04L27/26 ,  H04J11/00 ,  H04K1/00

    Abstract: A communication device generates a physical layer (PHY) data unit that includes a PHY preamble and one or more PHY midambles. The communication generates the PHY preamble of the PHY data unit to include i) a signal field having a subfield that indicates that the PHY data unit includes one or more PHY midambles, ii) a short training field (STF) for automatic gain control (AGC) training and synchronization at a receiver, and iii) one or more long training fields (LTFs) for determining a channel estimate at the receiver. The communication generates a data payload of the PHY data unit having i) a set of orthogonal frequency division multiplexing (OFDM) symbols, and ii) one or more PHY midambles. Each of the one or more PHY midambles includes one or more LTFs for determining an updated channel estimate. The communication device transmits the PHY data unit via a wireless communication channel.

    Long wireless local area network (WLAN) packets with midambles
    20.
    发明授权
    Long wireless local area network (WLAN) packets with midambles 有权
    长时间的无线局域网（WLAN）数据包

    公开(公告)号：US09596715B1

    公开(公告)日：2017-03-14

    申请号：US13689223

    申请日：2012-11-29

    Applicant: MARVELL INTERNATIONAL LTD.

    Inventor： Hongyuan Zhang ,  Rohit U. Nabar ,  Sudhir Srinivasa ,  Raja Banerjea ,  Yong Liu

    IPC: H04L27/00 ,  H04W84/12 ,  H04L27/26 ,  H04L1/06 ,  H04L25/03 ,  H04L5/00 ,  H04B1/12 ,  H04N5/44 ,  H04B3/32 ,  H04B1/10

    CPC classification number: H04W84/12 ,  H04B1/1027 ,  H04B1/123 ,  H04B3/32 ,  H04L1/0618 ,  H04L5/0007 ,  H04L25/03057 ,  H04L25/03343 ,  H04L27/2602 ,  H04L27/2613 ,  H04L27/2647 ,  H04N5/4401

    Abstract: A preamble, first and second portions of a data payload of a single data unit, and a midamble included between the first and second portions are generated. The midamble includes calibration information, and is based on a maximum number of space-time streams of a communication channel. A network interface of a communication device generates the preamble, the first and second portions of the data payload, and the midamble. A preamble, first and second portions of a data payload of a single data unit, and a midamble are received. The midamble includes calibration information, and is based on a maximum number of space-time streams. A first and/or a second characteristic is updated based on the midamble. A network interface of a communication device receives the preamble, the first and second portions of the data payload, and the midamble; and updates the first or the second characteristic based on the midamble.

    Abstract translation: 产生单个数据单元的数据有效载荷的前导码，第一和第二部分以及包括在第一和第二部分之间的中间码。 中间码包括校准信息，并且基于通信信道的最大数量的时空流。 通信设备的网络接口产生前导码，数据有效载荷的第一和第二部分以及中间码。 接收单个数据单元的数据有效载荷的前导码，第一和第二部分以及中间码。 中间码包括校准信息，并且基于最大数量的时空流。 基于中间码来更新第一和/或第二特性。 通信设备的网络接口接收前导码，数据有效载荷的第一和第二部分以及中间码; 并基于midamble更新第一或第二特征。

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