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    Systems and methods for implementing application profiles and device classes in power line communication (PLC) environments
    11.
    发明授权
    Systems and methods for implementing application profiles and device classes in power line communication (PLC) environments 有权

    公开(公告)号：US09831914B2

    公开(公告)日：2017-11-28

    申请号：US14679360

    申请日：2015-04-06

    Applicant: Texas Instruments Incorporated

    Inventor： Ii Han Kim ,  Anand G. Dabak ,  Badri N. Varadarajan

    IPC: H04B3/54 ,  H04L12/911

    CPC classification number: H04B3/542 ,  H04B2203/5408 ,  H04B2203/5416 ,  H04L47/78

    Abstract: Systems and methods for application profiles and device classes in power line communications (PLCs) are described. In some embodiments, a PLC device has the device class defined by a PHY layer and may include a processor and a memory coupled to the processor. The memory may be configured to store program instructions, which may be executable by the processor to cause the PLC device to communicate with a higher-level PLC apparatus over a power line using a frequency band. The frequency band may be selected based upon an application profile and/or a device class associated with the PLC device. In some implementations, the higher-level PLC apparatus may include a PLC gateway or a data concentrator, and the PLC device may include a PLC modem or the like. Examples of application profiles include access communications, in-premises connectivity, AC charging, and/or DC charging. Device classes may represent a minimum communication data rate and/or an operating frequency band restriction of the PLC device.

    Non-Beacon Network Communications Using Frequency Subbands
    13.
    发明申请
    Non-Beacon Network Communications Using Frequency Subbands 审中-公开
    使用频率子带的非信标网络通信

    公开(公告)号：US20150063285A1

    公开(公告)日：2015-03-05

    申请号：US14538425

    申请日：2014-11-11

    Applicant: Texas Instruments Incorporated

    Inventor： Ramanuja Vedantham ,  Kumaran Vijayasankar ,  Anand G. Dabak ,  Badri N. Varadarajan

    IPC: H04W72/04 ,  H04W72/12

    CPC classification number: H04W72/0453 ,  H04B3/544 ,  H04L41/0833 ,  H04W72/1231 ,  Y04S40/162

    Abstract: Systems and methods for designing, using, and/or implementing non-beacon network communications using frequency subbands are described. In various implementations, these systems and methods may be applicable to Power Line Communications (PLC). For example, a method may include transmitting a beacon request message over a given one of a plurality of frequency subbands, receiving a plurality of beacons in response to having transmitted the beacon request message, each of the plurality of beacons received over a respective one of the plurality of frequency subbands, and calculating a downlink quality report based, at least in part, upon the received beacons. The method may also include transmitting the downlink quality report over each of the plurality of frequency subbands and receiving a subband allocation command in response to having transmitted the downlink quality report, the subband allocation command indicating a downlink subband assignment and an uplink subband assignment.

    Abstract translation: 描述了使用频率子带设计，使用和/或实现非信标网络通信的系统和方法。 在各种实现中，这些系统和方法可以适用于电力线通信（PLC）。 例如，一种方法可以包括在多个频率子带中的给定的一个频带上传送信标请求消息，响应于已经发送了信标请求消息来接收多个信标，多个信标中的每一个在 所述多个频率子带，并且至少部分地基于所接收的信标来计算下行链路质量报告。 该方法还可以包括：响应于已经发送下行链路质量报告，指示下行链路子带分配的子带分配命令和上行链路子带分配，在多个频率子带中的每一个上发送下行链路质量报告，并接收子带分配命令。

    DATA ENCODER FOR POWER LINE COMMUNICATIONS
    15.
    发明公开
    DATA ENCODER FOR POWER LINE COMMUNICATIONS 审中-公开

    公开(公告)号：US20230421201A1

    公开(公告)日：2023-12-28

    申请号：US18460837

    申请日：2023-09-05

    Applicant: Texas Instruments Incorporated

    Inventor： Badri N. Varadarajan ,  Anand Dabak ,  II Han Kim

    IPC: H04B3/54 ,  H04L69/22 ,  H04L1/00 ,  H04L69/323

    CPC classification number: H04B3/54 ,  H04L69/22 ,  H04L1/0041 ,  H04L1/0071 ,  H04L69/323

    Abstract: In a disclosed embodiment, a power line communication (PLC) transmitter includes a forward error correction (FEC) encoder that receives payload data and adds parity information to the data to create an encoded output, a fragmenter that receives the encoded output from the FEC encoder and segments the encoded output into a plurality of fragments, a fragment repetition encoder that receives the plurality of fragments from the fragmenter and copies each of the fragments a selected number of times, and an interleaver that receives the copies of the plurality of fragments from the fragment repetition encoder and interleaves the copies of the plurality of fragments for transmission on a power line.

    Rate matching and scrambling techniques for control signaling
    17.
    发明授权
    Rate matching and scrambling techniques for control signaling 有权
    控制信号的速率匹配和加扰技术

    公开(公告)号：US09143167B2

    公开(公告)日：2015-09-22

    申请号：US14194430

    申请日：2014-02-28

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Badri N. Varadarajan ,  Xiaomeng Shi ,  Eko Nugroho Onggosanusi

    IPC: H03M13/00 ,  H03M13/11 ,  H04L1/00 ,  H04L27/26

    CPC classification number: H03M13/1111 ,  H04L1/0013 ,  H04L1/0046 ,  H04L1/0065 ,  H04L1/0067 ,  H04L1/0072 ,  H04L27/2626

    Abstract: Embodiments of the present disclosure provide a transmitter, a receiver and methods of operating a transmitter and a receiver. In one embodiment, the transmitter includes an input padding module configured to provide padded bits having padding bits added to payload bits for one or more control channels, and a scrambling module configured to apply a masking sequence to one or more of the padded bits to generate scrambled bits. Additionally, the transmitter also includes an encoding module configured to perform forward error correction encoding and rate matching on the scrambled bits to obtain a required number of control channel output bits, and a transmit module configured to transmit the control channel output bits for one or more control channels.

    Abstract translation: 本公开的实施例提供发射机，接收机和操作发射机和接收机的方法。 在一个实施例中，发射机包括：输入填充模块，其被配置为提供填充比特，其具有添加到一个或多个控制信道的有效载荷比特的填充比特;以及加扰模块，被配置为向一个或多个填充比特应用屏蔽序列以产生 乱码 此外，发射机还包括编码模块，其被配置为对加扰比特执行前向纠错编码和速率匹配，以获得所需数量的控制信道输出比特;以及发射模块，被配置为发送用于一个或多个的控制信道输出比特 控制通道。

    Precoding codebook design for single user MIMO
    18.
    发明授权
    Precoding codebook design for single user MIMO 有权
    单用户MIMO的预编码码本设计

    公开(公告)号：US09042480B2

    公开(公告)日：2015-05-26

    申请号：US13864764

    申请日：2013-04-17

    Applicant: Texas Instruments Incorporated

    Inventor： Eko N. Onggosanusi ,  Badri N. Varadarajan ,  Runhua Chen ,  Zukang Shen ,  Tarik Muharemovic

    IPC: H04B15/00 ,  H04B7/04 ,  H04B7/06 ,  H04L27/34 ,  H04L27/26

    CPC classification number: H04B7/0456 ,  H04B7/0426 ,  H04B7/0465 ,  H04B7/0469 ,  H04B7/0478 ,  H04B7/0617 ,  H04L27/2601 ,  H04L27/34

    Abstract: A transmitter is for use with multiple transmit antennas and includes a precoder unit configured to precode data for a transmission using a precoding matrix selected from a codebook, wherein the codebook corresponds to the following three transmission properties for an uplink transmission: 1) all precoding elements from the precoding matrix have a same magnitude, 2) each precoding element from the precoding matrix is taken from a set of finite values and 3) there is only one non-zero element in any row of the precoding matrix. The transmitter also includes a transmit unit configured to transmit the precoded data.

    Abstract translation: 发射机用于多个发射天线，并且包括预编码器单元，其配置为使用从码本中选择的预编码矩阵来对数据进行预编码，其中所述码本对应于上行链路传输的以下三种传输属性：1）所有预编码元件 来自预编码矩阵具有相同的量值，2）来自预编码矩阵的每个预编码元素取自一组有限值，并且3）在预编码矩阵的任何行中只有一个非零元素。 发射机还包括被配置为发送预编码数据的发射单元。

    Building, Transmitting, and Receiving Frame Structures in Power Line Communications
    19.
    发明申请
    Building, Transmitting, and Receiving Frame Structures in Power Line Communications 审中-公开
    电力线通信中的建筑，发射和接收帧结构

    公开(公告)号：US20140146900A1

    公开(公告)日：2014-05-29

    申请号：US14169773

    申请日：2014-01-31

    Applicant: Texas Instruments Incorporated

    Inventor： Anand G. Dabak ,  Badri N. Varadarajan ,  Il Han Kim ,  Tarkesh Pande

    IPC: H04B3/54

    CPC classification number: H04L69/22 ,  H04B3/30 ,  H04B3/54 ,  H04B3/542 ,  H04B10/11 ,  H04B2001/6912

    Abstract: Systems and methods for building, transmitting, and receiving frame structures in power line communications (PLC) are described. Various techniques described herein provide a preamble design using one or more symbols based on a chirp signal that yields a low peak-to-average power ratio (PAPR). According to some techniques, the preamble may be constructed with one or more different types and/or number of symbols configured to identify a PLC domain operating in close physical proximity to another PLC domain. According to other techniques, one or more preamble symbols may be interspersed within a header portion of a PLC frame to facilitate estimation of a frame boundary and/or sampling frequency offset, for example, in the presence of impulsive noise. According to yet other techniques, a PLC detector may be capable of receiving and decoding two or more types of PLC frames (e.g., using different PLC standards).

    Abstract translation: 描述了在电力线通信（PLC）中构建，发送和接收帧结构的系统和方法。 本文描述的各种技术基于产生低峰值与平均功率比（PAPR）的啁啾信号提供使用一个或多个符号的前导码设计。 根据一些技术，可以使用一个或多个不同类型和/或符号数来构造前导码，该符号被配置为识别在与另一个PLC域紧密物理接近的操作的PLC域。 根据其他技术，一个或多个前导符号可以散布在PLC帧的报头部分内，以便于例如在存在脉冲噪声的情况下估计帧边界和/或采样频率偏移。 根据其他技术，PLC检测器可能能够接收和解码两个或更多类型的PLC帧（例如，使用不同的PLC标准）。

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