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    Reducing Precoder Signaling Overhead for MIMO Communication System
    2.
    发明申请
    Reducing Precoder Signaling Overhead for MIMO Communication System 有权
    降低MIMO通信系统的预编码信号开销

    公开(公告)号：US20140362787A1

    公开(公告)日：2014-12-11

    申请号：US14298369

    申请日：2014-06-06

    Applicant: Broadcom Corporation

    Inventor： Amin MOBASHER ,  Sam Alex ,  Louay Jalloul

    IPC: H04W72/04 ,  H04W52/14 ,  H04B7/04

    CPC classification number: H04W52/146 ,  H04B7/0478 ,  H04B7/0632 ,  H04B7/0639 ,  H04L5/00 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/0222 ,  H04W52/241

    Abstract: Where receiver performance at a User Equipment (UE) is similar using a coarse precoder codebook as using a fine resolution precoder codebook, the signaling of a two-component precoder codebook is modified such that a precoder codeword is signaled to the UE in only a portion of the physical resources allocated for precoder codeword signaling to the UE. The remaining portion of the allocated physical resources is used to signal control information to improve the UE's performance.

    Abstract translation: 在用户设备（UE）的接收机性能使用粗预编码器码本作为使用精细分辨率预编码器码本的情况下相似的情况下，修改双分量预编码码本的信令，使得预编码器码字仅在部分信令给UE 分配给UE的预编码器码字信令的物理资源。 所分配的物理资源的剩余部分用于信号控制信息以改善UE的性能。

    Cross cell beam persistence in a massive multiple-input, multiple output (MIMO) environment
    3.
    发明授权
    Cross cell beam persistence in a massive multiple-input, multiple output (MIMO) environment 有权
    巨大的多输入多输出（MIMO）环境中的跨小区光束持续性

    公开(公告)号：US09379790B2

    公开(公告)日：2016-06-28

    申请号：US14142581

    申请日：2013-12-27

    Applicant: Broadcom Corporation

    Inventor： Nihar Jindal ,  Murat Mese ,  Arogyaswami Paulraj ,  Louay Jalloul ,  Amin Mobasher ,  Sam Alex

    IPC: H04B7/04 ,  H04B7/02 ,  H04B7/06 ,  H04W16/28 ,  H04W72/04

    CPC classification number: H04B7/0413 ,  H04B7/024 ,  H04B7/0617 ,  H04W16/28 ,  H04W72/046

    Abstract: In wireless operating environments, wireless user devices are often within the coverage area of multiple base stations. The base station providing the best uplink for the user device may be different than the base station providing the best downlink for the user device. Systems and techniques for asymmetric uplink and downlink communications for a user device are provided. In embodiments, the user device initially synchronizes with a base station. Both the uplink and downlink are initially served by this base station. A determination is then made whether to handoff the downlink for the user device to another base station. When a determination is indicated, the downlink is handed off to the second base station. Thereafter, periodic measurements are made. The determinations whether to handoff the uplink and downlink for the user device are made independently.

    Abstract translation: 在无线操作环境中，无线用户设备通常在多个基站的覆盖区域内。 为用户设备提供最佳上行链路的基站可以不同于为用户设备提供最佳下行链路的基站。 提供了用于用户设备的用于不对称上行链路和下行链路通信的系统和技术。 在实施例中，用户设备最初与基站同步。 上行链路和下行链路两者最初由该基站服务。 然后确定是否将用户设备的下行链路切换到另一个基站。 当指示确定时，下行链路被切换到第二基站。 此后，进行周期测量。 决定是否切换用户设备的上行链路和下行链路是独立进行的。

    Physical Layer Encryption for MIMO Communication Networks
    4.
    发明申请
    Physical Layer Encryption for MIMO Communication Networks 有权
    MIMO通信网络的物理层加密

    公开(公告)号：US20150036821A1

    公开(公告)日：2015-02-05

    申请号：US13954494

    申请日：2013-07-30

    Applicant: Broadcom Corporation

    Inventor： Sam Alex ,  Louay Jalloul

    IPC: H04W12/08 ,  H04B7/04 ,  H04W88/08

    CPC classification number: H04W12/02 ,  H04B7/0617 ,  H04B7/0619 ,  H04W88/08

    Abstract: Systems and methods are provided for encrypting a data transmission from a base station at the physical layer, such that the data transmission can only be decoded successfully by an intended UE. In an embodiment, a desired signal component, including a data signal for an intended UE, is combined with an interference component to generate a signal for transmission. The interference component is designed such that it falls in a null space of the channel from the base station to the intended UE and is therefore not received by the intended UE. In contrast, for an unintended UE, the interference component is designed to interfere with the desired signal component at the unintended UE, preventing the unintended UE from successfully decoding the data transmission.

    Abstract translation: 提供了用于加密来自物理层的基站的数据传输的系统和方法，使得数据传输只能由目标UE成功解码。 在一个实施例中，包括用于预期UE的数据信号的期望信号分量与干扰分量组合以产生用于传输的信号。 干扰分量被设计为使得它落入从基站到目标UE的信道的零空间中，因此不被预期的UE接收。 相比之下，对于非预期的UE，干扰分量被设计为干扰非预期UE处的期望信号分量，从而防止非预期的UE成功解码数据传输。

    Physical layer encryption for MIMO communication networks
    6.
    发明授权
    Physical layer encryption for MIMO communication networks 有权
    MIMO通信网络的物理层加密

    公开(公告)号：US09351156B2

    公开(公告)日：2016-05-24

    申请号：US13954494

    申请日：2013-07-30

    Applicant: Broadcom Corporation

    Inventor： Sam Alex ,  Louay Jalloul

    IPC: H04W4/00 ,  H04W12/02 ,  H04B7/06 ,  H04W88/08

    CPC classification number: H04W12/02 ,  H04B7/0617 ,  H04B7/0619 ,  H04W88/08

    Abstract: Systems and methods are provided for encrypting a data transmission from a base station at the physical layer, such that the data transmission can only be decoded successfully by an intended UE. In an embodiment, a desired signal component, including a data signal for an intended UE, is combined with an interference component to generate a signal for transmission. The interference component is designed such that it falls in a null space of the channel from the base station to the intended UE and is therefore not received by the intended UE. In contrast, for an unintended UE, the interference component is designed to interfere with the desired signal component at the unintended UE, preventing the unintended UE from successfully decoding the data transmission.

    Abstract translation: 提供了用于加密来自物理层的基站的数据传输的系统和方法，使得数据传输只能由目标UE成功解码。 在一个实施例中，包括用于预期UE的数据信号的期望信号分量与干扰分量组合以产生用于传输的信号。 干扰分量被设计为使得它落入从基站到目标UE的信道的零空间中，因此不被预期的UE接收。 相比之下，对于非预期的UE，干扰分量被设计为干扰非预期UE处的期望信号分量，从而防止非预期的UE成功解码数据传输。

    METHODS OF ANTENNA SYSTEM CONTROL IN MASSIVE MIMO SYSTEMS
    7.
    发明申请
    METHODS OF ANTENNA SYSTEM CONTROL IN MASSIVE MIMO SYSTEMS 审中-公开
    大规模MIMO系统中天线系统控制的方法

    公开(公告)号：US20150085944A1

    公开(公告)日：2015-03-26

    申请号：US14037903

    申请日：2013-09-26

    Applicant: Broadcom Corporation

    Inventor： Amin MOBASHER ,  Sam Alex ,  Louay Jalloul

    IPC: H04B7/04

    CPC classification number: H04B7/0691 ,  H04B7/0413

    Abstract: A multiple input multiple output (MIMO) antenna system is implemented for communications in a wireless device. Information regarding the environment surrounding the wireless device may be used to determine which of the MIMO antennas are selected such that communications performance is improved. Metrics related to signal transmission and reception by the wireless device may be monitored and used to determine which MIMO antennas are selected. The metrics may be measured by any of the MIMO antennas at any time, including antennas currently engaged or not engaged in active communications. The metrics may be used in lieu of sensors to supplement or replace wireless device functionality otherwise provided by the sensors.

    Abstract translation: 多输入多输出（MIMO）天线系统被实现用于无线设备中的通信。 可以使用关于无线设备周围的环境的信息来确定哪个MIMO天线被选择以提高通信性能。 可以监视与无线设备的信号发送和接收相关的度量，并用于确定哪些MIMO天线被选择。 任何时间可以由任何MIMO天线测量度量，包括当前接合或未参与主动通信的天线。 可以使用度量来代替传感器来补充或替代由传感器提供的无线设备功能。

    Base station simultaneously servicing legacy cellular and massive multiple-input, multiple-output
    9.
    发明授权
    Base station simultaneously servicing legacy cellular and massive multiple-input, multiple-output 有权
    基站同时支持传统蜂窝和大规模多输入多输出

    公开(公告)号：US09496933B2

    公开(公告)日：2016-11-15

    申请号：US14142310

    申请日：2013-12-27

    Applicant: Broadcom Corporation

    Inventor： Louay Jalloul ,  Amin Mobasher ,  Nihar Jindal ,  Sam Alex ,  Murat Mese

    IPC: H04W4/00 ,  H04B7/04 ,  H04L5/00 ,  H04B7/06 ,  H04W88/10

    CPC classification number: H04B7/0452 ,  H04B7/0689 ,  H04L5/0005 ,  H04L5/0007 ,  H04L5/0053 ,  H04W88/10

    Abstract: As wireless networks evolve, network providers may utilize legacy LTE devices as well as devices that support massive multi-input, multiple output (M-MIMO). Systems and methods for simultaneously servicing legacy LTE devices and M-MIMO devices are provided. In embodiments, a transmission zone for M-MIMO communications is defined within a legacy, non M-MIMO radio frame. The location of the M-MIMO transmission zone is transmitted to user devices. For example, an identification of the location of the M-MIMO transmission zone is transmitted in a system information message. In a further example, the location of the M-MIMO transmission zone is transmitted in the downlink control information. The location of the M-MIMO transmission zone may be defined dynamically based on a variety of criteria. In addition or alternatively, a set of pre-defined transmission zones may be utilized.

    Abstract translation: 随着无线网络的发展，网络提供商可以利用传统的LTE设备以及支持大量多输入多输出（M-MIMO）的设备。 提供了用于同时维护传统LTE设备和M-MIMO设备的系统和方法。 在实施例中，在传统的非M-MIMO无线电帧内定义用于M-MIMO通信的传输区域。 M-MIMO传输区的位置被传送到用户设备。 例如，在系统信息消息中发送M-MIMO传输区域的位置的标识。 在另一示例中，在下行控制信息中发送M-MIMO传输区的位置。 M-MIMO传输区域的位置可以基于各种标准动态定义。 另外或替代地，可以使用一组预定义的传输区域。

    Pilot design for massive MIMO communication
    10.
    发明授权
    Pilot design for massive MIMO communication 有权
    大规模MIMO通信的导频设计

    公开(公告)号：US09106280B2

    公开(公告)日：2015-08-11

    申请号：US14042257

    申请日：2013-09-30

    Applicant: Broadcom Corporation

    Inventor： Sam Alex ,  Amin Mobasher ,  Louay Jalloul

    IPC: H04B7/02 ,  H04L1/02 ,  H04B7/04 ,  H04L25/02 ,  H04B7/06

    CPC classification number: H04B7/0413 ,  H04B7/0404 ,  H04B7/0684 ,  H04B7/0691 ,  H04L25/0202 ,  H04L25/0204 ,  H04L25/0228

    Abstract: Embodiments recognize that in MIMO and M-MIMO systems, physical antennas tend to be closely spaced to each other (e.g., a grid). As a result, a spatial correlation typically exists between physical antennas as well as between transmissions from logical antenna ports. Embodiments exploit this characteristic to reduce the amount of pilot signaling needed to enable downlink channel estimation. Specifically, embodiments limit pilot signaling to only a subset of supported logical antenna ports and rely on spatial correlation information to interpolate channels from logic antenna ports for which no pilot signaling is used.

    Abstract translation: 实施例认识到，在MIMO和M-MIMO系统中，物理天线倾向于彼此紧密地间隔（例如网格）。 结果，在物理天线之间以及来自逻辑天线端口的传输之间通常存在空间相关性。 实施例利用该特性来减少启用下行链路信道估计所需的导频信令量。 具体地，实施例将导频信令限制到仅支持的逻辑天线端口的子集，并且依赖于空间相关信息从不使用导频信令的逻辑天线端口内插信道。

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