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    Communication on a pilot wire
    111.
    发明授权
    Communication on a pilot wire 有权
    在导线上进行通讯

    公开(公告)号：US09014247B2

    公开(公告)日：2015-04-21

    申请号：US13650125

    申请日：2012-10-11

    Applicant: Texas Instruments Incorporated

    Inventor： Ramanuja Vedantham ,  Gang Gary Xu ,  Donald P. Shaver

    IPC: H04B1/38 ,  H04L5/16 ,  H04L5/00 ,  H04L25/49

    CPC classification number: H04L5/0062 ,  H04B1/38 ,  H04B3/544 ,  H04L5/0046 ,  H04L5/0091 ,  H04L12/4013 ,  H04L12/40189 ,  H04L12/413 ,  H04L25/4902 ,  H04L27/2611 ,  H04L2012/40215 ,  H04L2012/40273

    Abstract: Systems and methods are disclosed for communicating on a pilot wire between Electric Vehicle Service Equipment (EVSE) and an Electric Vehicle (EV). In an example embodiment, a modem is coupled to the pilot wire that couples the EVSE and the EV. The modem transmits both pulse width modulation (PWM) command signals and power line communication (PLC) signals to a remote device via the pilot wire. The modem interleaves the PWM and PLC signals on the pilot wire so that latency requirements for the PWM signals are maintained. The modem supports parallel protocol stacks in which PLC signals are processed in a first path and PWM signals are processed in a second path that bypasses the first path and provides the PWM signals directly to a MAC layer. The modem may create a modified frame for the PLC signals to maintain the latency requirements.

    Abstract translation: 公开了用于在电动车辆服务设备（EVSE）和电动车辆（EV）之间的导线上通信的系统和方法。 在示例性实施例中，调制解调器耦合到耦合EVSE和EV的导频线。 调制解调器通过导频线向远程设备发送脉宽调制（PWM）指令信号和电力线通信（PLC）信号。 调制解调器在导线上交织PWM和PLC信号，以保持PWM信号的延迟要求。 调制解调器支持并行协议栈，其中PLC信号在第一路径中被处理，并且PWM信号在绕过第一路径的第二路径中被处理并且将PWM信号直接提供给MAC层。 调制解调器可以为PLC信号创建一个修改的帧，以维持等待时间要求。

    Data concentrator initiated multicast firmware upgrade
    113.
    发明授权
    Data concentrator initiated multicast firmware upgrade 有权
    数据集中器启动组播固件升级

    公开(公告)号：US08826265B2

    公开(公告)日：2014-09-02

    申请号：US13659866

    申请日：2012-10-24

    Applicant: Texas Instruments Incorporated

    Inventor： Ramanuja Vedantham ,  Kumaran Vijayasankar ,  Ramachandran Ananthakrishnan ,  Susan Yim

    IPC: G06F9/44 ,  G06F9/445 ,  H04B3/54

    CPC classification number: G06F8/654 ,  H04B3/542 ,  H04B2203/5408

    Abstract: Systems and methods for implementing data concentrated initiated multicast firmware upgrade in power line communications (PLC) are described. In an illustrative embodiment, a method performed by a PLC device may include forming a group of PLC devices to receive a transmission of a data set, the group being organized according to a hierarchical structure, transmitting the data set to the group of PLC devices, determining whether a PLC device in the lowest level of the hierarchical structure is missing one or more portions of the data set, and retransmitting at least the missing portions of the data set until the lowest level of PLC devices each have the full data set.

    Abstract translation: 描述了在电力线通信（PLC）中实现数据集中发起的组播固件升级的系统和方法。 在说明性实施例中，由PLC设备执行的方法可以包括：形成一组PLC设备，以接收数据集的传输，所述数据组的传输是根据层次结构组织的，将数据集发送到PLC设备组， 确定分层结构的最低级别的PLC设备是否缺少数据集的一个或多个部分，并且至少重传数据集的缺失部分，直到最低级别的PLC设备各自具有完整数据集。

    Retransmission Mechanism for Segmented Frames in Power Line Communication (PLC) Networks
    114.
    发明申请
    Retransmission Mechanism for Segmented Frames in Power Line Communication (PLC) Networks 审中-公开
    电力线通信（PLC）网络中分段帧的重传机制

    公开(公告)号：US20130343403A1

    公开(公告)日：2013-12-26

    申请号：US13916879

    申请日：2013-06-13

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Kumaran Vijayasankar ,  Ramanuja Vedantham ,  Tarkesh Pande

    IPC: H04B3/54

    CPC classification number: H04B3/54 ,  H04B3/542 ,  H04B2203/5408 ,  H04B2203/5416 ,  H04B2203/5433 ,  H04B2203/5445 ,  H04L1/1887

    Abstract: Embodiments of methods and systems for transmitting and receiving segmented frames in a Power Line Communication (PLC) network are disclosed. A transmitter sends a first segment using CSMA/CA based on the priority of frame. All the other segments are transmitted using the CFS slot. When an ACK is received, transmitter sends the next segment after CFS. When a NACK is received, the transmitter sends just the last segment after CFS. If no ACK/NACK is received, the transmitter sends the last segment using CSMA/CA. If a NO_EARLIER_SEGMENTS delimiter is received, the transmitter sends the frame starting from the first segment using CSMA/CA. A receiver may send the NO_EARLIER_SEGMENTS delimiter when no earlier segments are in a receive buffer for reassembly. If the receiver is expecting to continue the reassembly of another frame when a segment is received, the receiver may transmit a BUSY_REASSEMBLY delimiter.

    Abstract translation: 公开了用于在电力线通信（PLC）网络中发送和接收分段帧的方法和系统的实施例。 发射机根据帧的优先级使用CSMA / CA发送第一段。 所有其他段都使用CFS槽进行传输。 当接收到ACK时，发送器在CFS之后发送下一个段。 当接收到NACK时，发射机仅在CFS之后发送最后一个段。 如果没有接收到ACK / NACK，则发送器使用CSMA / CA发送最后一个段。 如果接收到NO_EARLIER_SEGMENTS分隔符，则发送器使用CSMA / CA从第一个分段开始发送帧。 当接收缓冲区中没有先前的段用于重新组装时，接收器可以发送NO_EARLIER_SEGMENTS分隔符。 如果接收器期望在接收到段时继续重新组合另一帧，则接收机可以发送BUSY_REASSEMBLY分隔符。

    Long Preamble and Duty Cycle Based Coexistence Mechanism for Power Line Communication (PLC) Networks
    115.
    发明申请
    Long Preamble and Duty Cycle Based Coexistence Mechanism for Power Line Communication (PLC) Networks 有权

    公开(公告)号：US20130322554A1

    公开(公告)日：2013-12-05

    申请号：US13910125

    申请日：2013-06-05

    Applicant: Texas Instruments Incorporated

    Inventor： Kumaran Vijayasankar ,  Ramanuja Vedantham ,  Tarkesh Pande

    IPC: H04B3/54

    CPC classification number: H04B3/54 ,  H04B2203/5408 ,  H04B2203/5416 ,  H04B2203/5433 ,  H04B2203/5445

    Abstract: Embodiments of methods and systems for supporting coexistence of multiple technologies in a Power Line Communication (PLC) network are disclosed. A long coexistence preamble sequence may be transmitted by a device that has been forced to back off the PLC channel multiple times. The long coexistence sequence provides a way for the device to request channel access from devices on the channel using other technology. The device may transmit a data packet after transmitting the long coexistence preamble sequence. A network duty cycle time may also be defined as a maximum allowed duration for nodes of the same network to access the channel. When the network duty cycle time occurs, all nodes will back off the channel for a duty cycle extended inter frame space before transmitting again. The long coexistence preamble sequence and the network duty cycle time may be used together.

    Relative Phase Detection in Power Line Communications Networks
    116.
    发明申请
    Relative Phase Detection in Power Line Communications Networks 有权
    电力线通信网络中的相对相位检测

    公开(公告)号：US20130101003A1

    公开(公告)日：2013-04-25

    申请号：US13659536

    申请日：2012-10-24

    Applicant: Texas Instruments Incorporated

    Inventor： Ramanuja Vedantham ,  Anand Dabak ,  Kumaran Vijayasankar

    IPC: H04B3/46 ,  H04B3/54

    CPC classification number: H04B3/54 ,  H04B2203/5408 ,  H04B2203/542 ,  H04B2203/5433

    Abstract: Systems and methods for relative phase detection and zero crossing detection for power line communications (PLC) are described. In some embodiments, both transmit and receive PLC devices detect a zero crossing on an AC mains phase. The devices start a phase detection counter (PDC) by generating a zero crossing pulse within 5% of the actual zero crossing time. When a frame is transmitted, the transmitting device includes a PDC value in the frame control header (FCH). The PDC value corresponds to the start time of the FCH. When the frame is received at the receive PLC device, the receive PLC device measures a local PDC value between the zero crossing and the start of the FCH. The receive device compares the local PDC value to the PDC value in the FCH of the received frame and determines if the devices are on the same phase.

    Abstract translation: 描述了用于电力线通信（PLC）的相对相位检测和零交叉检测的系统和方法。 在一些实施例中，发送和接收PLC设备都检测AC电源相位上的过零点。 器件通过在实际过零时间的5％内产生过零脉冲来启动相位检测计数器（PDC）。 当发送帧时，发送装置在帧控制报头（FCH）中包括PDC值。 PDC值对应于FCH的开始时间。 当在接收PLC设备处接收到帧时，接收PLC设备测量过零点和FCH开始之间的本地PDC值。 接收设备将本地PDC值与接收帧的FCH中的PDC值进行比较，并确定设备是否处于同一相位。

    Communication on a Pilot Wire
    117.
    发明申请
    Communication on a Pilot Wire 有权
    飞行员通讯

    公开(公告)号：US20130094552A1

    公开(公告)日：2013-04-18

    申请号：US13650125

    申请日：2012-10-11

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Ramanuja Vedantham ,  Gang Gary Xu ,  Donald P. Shaver

    IPC: H04B1/38

    CPC classification number: H04L5/0062 ,  H04B1/38 ,  H04B3/544 ,  H04L5/0046 ,  H04L5/0091 ,  H04L12/4013 ,  H04L12/40189 ,  H04L12/413 ,  H04L25/4902 ,  H04L27/2611 ,  H04L2012/40215 ,  H04L2012/40273

    Abstract: Systems and methods are disclosed for communicating on a pilot wire between Electric Vehicle Service Equipment (EVSE) and an Electric Vehicle (EV). In an example embodiment, a modem is coupled to the pilot wire that couples the EVSE and the EV. The modem transmits both pulse width modulation (PWM) command signals and power line communication (PLC) signals to a remote device via the pilot wire. The modem interleaves the PWM and PLC signals on the pilot wire so that latency requirements for the PWM signals are maintained. The modem supports parallel protocol stacks in which PLC signals are processed in a first path and PWM signals are processed in a second path that bypasses the first path and provides the PWM signals directly to a MAC layer. The modem may create a modified frame for the PLC signals to maintain the latency requirements.

    Abstract translation: 公开了用于在电动车辆服务设备（EVSE）和电动车辆（EV）之间的导线上通信的系统和方法。 在示例性实施例中，调制解调器耦合到耦合EVSE和EV的导频线。 调制解调器通过导频线向远程设备发送脉宽调制（PWM）指令信号和电力线通信（PLC）信号。 调制解调器在导线上交织PWM和PLC信号，以保持PWM信号的延迟要求。 调制解调器支持并行协议栈，其中PLC信号在第一路径中被处理，并且PWM信号在绕过第一路径的第二路径中被处理并且将PWM信号直接提供给MAC层。 调制解调器可以为PLC信号创建一个修改的帧，以维持等待时间要求。

    SCHEDULER FOR POWER-EFFICIENT TIME SLOTTED PROTOCOL
    119.
    发明申请
    SCHEDULER FOR POWER-EFFICIENT TIME SLOTTED PROTOCOL 有权

    公开(公告)号：US20250039891A1

    公开(公告)日：2025-01-30

    申请号：US18915454

    申请日：2024-10-15

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Arvind K. Raghu ,  Ariton E. Xhafa ,  Ramanuja Vedantham ,  Xiaolin Lu

    IPC: H04W72/23 ,  H04W72/1273

    Abstract: A network includes a parent node and at least one child node configured to communicate with the parent node via a wireless network protocol. The parent node includes a broadcast coordinator to transmit a broadcast message from the parent node to the child node at predetermined time intervals according to the wireless network protocol. A scheduler generates a scheduling packet that is communicated in the broadcast message. The scheduling packet includes a data field to instruct each child node to activate and receive data communicated from the parent node in a prescribed time slot following the broadcast message that is defined by the scheduling packet.

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