公开(公告)号：US09871630B2

公开(公告)日：2018-01-16

申请号：US14557858

申请日：2014-12-02

Applicant: Texas Instruments Incorporated

Inventor： Kumaran Vijayasankar ,  Ramanuja Vedantham ,  Anand G. Dabak ,  Badri N. Varadarajan ,  Il Han Kim ,  Xiaolin Lu

IPC: H04W72/04 ,  H04L5/00 ,  H04B3/54 ,  H04L25/02

CPC classification number: H04L5/0048 ,  H04B3/54 ,  H04B3/542 ,  H04B2203/5408 ,  H04B2203/5466 ,  H04B2203/5483 ,  H04B2203/5491 ,  H04L5/0044 ,  H04L5/0055 ,  H04L5/0078 ,  H04L5/0094 ,  H04L25/0272

Abstract: Systems and methods for designing, using, and/or implementing hybrid communication networks are described. In various embodiments, these systems and methods may be applicable to power line communications (PLC). For example, one or more of the techniques disclosed herein may include methods to coordinate medium-to-low voltage (MV-LV) and low-to-low voltage (LV-LV) PLC networks when the MV-LV network operates in a frequency subband mode and the LV-LV network operates in wideband mode (i.e., hybrid communications). In some cases, MV routers and LV routers may have different profiles. For instance, MV-LV communications may be performed using MAC superframe structures, and first-level LV to lower-level LV communications may take place using a beacon mode. Lower layer LV nodes may communicate using non-beacon modes. Also, initial scanning procedures may encourage first-to-second-level LV device communications rather than MV-to-first-level LV connections.

公开(公告)号：US20180006915A1

公开(公告)日：2018-01-04

申请号：US15196495

申请日：2016-06-29

Applicant: Texas Instruments Incorporated

Inventor： Wonsoo Kim ,  Il Han Kim

IPC: H04L12/26 ,  H04L12/24 ,  H04B3/54

Abstract: A communication system and method includes a receiver for receiving a communication signal coupled through a physical medium in accordance with a protocol. An interface formed in a single substrate receives from the receiver an indication of the signal strength of the received communication signal. The interface also decodes the information contained in the received communication signal. For example, the interface sends the information decoded from the received communication signal to a first application for consuming the decoded information. The interface also sends the indication of the signal strength of the received communication signal to a second application for generating a quality determination of the physical medium in response to the indication of the signal strength of the received communication signal.

公开(公告)号：US20170142237A1

公开(公告)日：2017-05-18

申请号：US15419045

申请日：2017-01-30

Applicant: Texas Instruments Incorporated

Inventor： Gang Xu ,  Ramanuja Vedantham ,  Kumaran Vijayasankar ,  Anand G Dabak ,  Tarkesh Pande ,  Il Han Kim ,  Xiaolin Lu

IPC: H04L29/06 ,  H04B3/54

CPC classification number: H04L69/22 ,  H04B3/54 ,  H04B3/542 ,  H04B2203/5408

Abstract: In a disclosed embodiment, a method for communication in a network includes receiving, at a first device registered to the network, a physical layer (PHY) frame that includes a PHY header and a MAC header. The PHY frame may further include a MAC payload. The PHY header includes a destination address field. The method further includes comparing a network address of the first device to the destination address field to determine whether the destination address field stores a value having the same number of bits as the network address. When the comparison indicates that the value stored by the destination address field does not have the same number of bits as the network address, the method skips decoding the MAC header and the MAC payload.

公开(公告)号：US09350424B2

公开(公告)日：2016-05-24

申请号：US14619514

申请日：2015-02-11

Applicant: Texas Instruments Incorporated

Inventor： Tarkesh Pande ,  Ramanuja Vedantham ,  Il Han Kim ,  Anand G. Dabak

IPC: H04B3/54 ,  H04L12/805 ,  H04L12/919 ,  H04L12/24 ,  H04L12/28 ,  H04L12/413

CPC classification number: H04B3/544 ,  H04B3/54 ,  H04B3/542 ,  H04B2203/5408 ,  H04L12/2803 ,  H04L12/2836 ,  H04L12/413 ,  H04L41/0896 ,  H04L47/36 ,  H04L47/765 ,  H04L2012/2843

Abstract: Systems and methods for implementing coexistence by requesting access to a channel in power line communications (PLC) are described. In an illustrative embodiment, a method performed by a PLC device, such as a PLC meter, may include detecting a communication from foreign PLC device on a PLC network in response to a foreign preamble received by the PLC device, determining whether a threshold back-off duration has been reached, and transmitting a channel access request in response to a determination that the threshold back-off duration has been reached.

公开(公告)号：US09172431B2

公开(公告)日：2015-10-27

申请号：US14464752

申请日：2014-08-21

Applicant: Texas Instruments Incorporated

Inventor： Shu Du ,  Anand G. Dabak ,  Xiaolin Lu ,  Il Han Kim

IPC: H04B3/54 ,  H04L12/10 ,  H04L12/26 ,  H04L7/00

CPC classification number: H04B3/54 ,  H04B3/544 ,  H04B2203/5408 ,  H04B2203/5466 ,  H04B2203/5495 ,  H04L7/00 ,  H04L12/10 ,  H04L43/0823

Abstract: A power line communication (PLC) device comprises a processor and a memory coupled to the processor. The memory is configured to store program instructions executable by the processor to cause the PLC device perform operations. One or more time slots are sequentially scan in each of a plurality of frequency bands. A packet transmitted by a second PLC device to the PLC device over one of the plurality of frequency bands is detected. Additional packets received from the second PLC device across the plurality of frequency bands based, at least in part, upon the detected packet are synchronized. The additional packets are organized in a plurality of frames, each of the plurality of frames having been transmitted by the second PLC device to the PLC device over a respective one of the plurality of frequency bands. Each frame has a plurality of time slots, and each time slot has a pair of beacon and bandscan packets, Each bandscan packet includes information indicating a frequency band distinct from any of the plurality of different frequency bands to be used by the second PLC device to communicate with the first PLC device in a direction from the second PLC device to the first PLC device.

Abstract translation: 电力线通信（PLC）设备包括处理器和耦合到处理器的存储器。 存储器被配置为存储可由处理器执行的程序指令，以使PLC设备执行操作。 在多个频带的每一个中顺序地扫描一个或多个时隙。 检测由第二PLC设备通过多个频带中的一个发送到PLC设备的分组。 至少部分地基于检测到的分组，跨多个频带从第二PLC设备接收的附加分组被同步。 所述附加分组被组织成多个帧，所述多个帧中的每一个已经由所述第二PLC设备通过所述多个频带中的相应一个频带发送到所述PLC设备。 每帧具有多个时隙，并且每个时隙具有一对信标和频带扫描分组，每个频带扫描分组包括指示要由第二PLC设备使用的多个不同频带中的任一个的频带的信息， 与第一PLC设备在从第二PLC设备到第一PLC设备的方向通信。

公开(公告)号：US20150171922A1

公开(公告)日：2015-06-18

申请号：US14630990

申请日：2015-02-25

Applicant: Texas Instruments Incorporated

Inventor： Shu Du ,  Anand G. Dabak ,  Xiaolin Lu ,  Il Han Kim

IPC: H04B3/54 ,  H04L7/00

CPC classification number: H04B3/54 ,  H04B3/544 ,  H04B2203/5408 ,  H04B2203/5466 ,  H04B2203/5495 ,  H04L7/00 ,  H04L12/10 ,  H04L43/0823

Abstract: Systems for channel selection in power line communications (PLC) are described. In some embodiments, a PLC device may include a processor and a memory. The memory stores instructions executable by the processor to cause the PLC device perform operations. One or more time slots in each of a plurality of frequency bands are sequentially scanned. A packet transmitted by a second PLC device to the PLC device over one of the plurality of frequency bands is detected. Additional packets received from the second PLC device are synchronized across the plurality of frequency bands based, at least in part, upon the detected packet. The additional packets are organized in a plurality of frames. Each of the plurality of frames having been transmitted by the second PLC device to the PLC device over a respective one of the plurality of frequency bands. Each frame has a plurality of time slots, and each time slot has a pair of beacon and bandscan packets.

Abstract translation: 描述了电力线通信（PLC）中通道选择的系统。 在一些实施例中，PLC设备可以包括处理器和存储器。 存储器存储可由处理器执行以使PLC设备执行操作的指令。 顺序地扫描多个频带中的每一个中的一个或多个时隙。 检测由第二PLC设备通过多个频带中的一个发送到PLC设备的分组。 至少部分地基于检测到的分组，从第二PLC设备接收的附加分组跨多个频带同步。 附加分组被组织成多个帧。 多个帧中的每一个已经由第二PLC设备通过多个频带中的相应一个发送到PLC设备。 每个帧具有多个时隙，并且每个时隙具有一对信标和带扫描分组。

公开(公告)号：US20140126655A1

公开(公告)日：2014-05-08

申请号：US14072765

申请日：2013-11-05

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Kumaran Vijayasankar ,  Ramanuja Vedantham ,  Anuj Batra ,  Tarkesh Pande ,  Il Han Kim

IPC: H04L12/24 ,  H04B3/54

CPC classification number: H04B3/54 ,  H04B2203/5408 ,  H04B2203/5433 ,  H04L12/6418

Abstract: In a method for communicating with a plurality of devices using different communication protocols, a signal is received at a transceiver device from a neighbor device via a physical layer of a communication media. At a first time the signal contains a header frame from a first device conforming to a first communication protocol and at another time the signal contains a header frame from a second device conforming to a second communication protocol. The transceiver determines which of the different communication protocols is being used by each of the plurality of devices. The transceiver may then process inbound payload data using the indentified protocol type. Data frames are transmitted to the first device using the first communication protocol and data frames are transmitted to the second device using the second communication protocol.

Abstract translation: 在使用不同通信协议与多个设备进行通信的方法中，在收发机设备处通过通信介质的物理层从邻居设备接收信号。 在第一时间，信号包含来自符合第一通信协议的第一设备的报头帧，并且在另一时间，该信号包含来自符合第二通信协议的第二设备的报头帧。 收发器确定多个设备中的每一个正在使用不同的通信协议中的哪一个。 然后，收发器可以使用识别的协议类型处理入站有效载荷数据。 使用第一通信协议将数据帧发送到第一设备，并且使用第二通信协议将数据帧发送到第二设备。

公开(公告)号：US20130101055A1

公开(公告)日：2013-04-25

申请号：US13656694

申请日：2012-10-20

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Tarkesh Pande ,  Anand Dabak ,  Kumaran Vijayasankar ,  Ramanuja Venantham ,  Il Han Kim

IPC: H04B3/54

CPC classification number: H04B3/54 ,  H04B2203/5416 ,  H04L5/0094 ,  H04L27/04 ,  H04L27/18 ,  H04L27/2602 ,  H04L27/32

Abstract: Systems and methods for routing protocols for power line communications (PLC) are described. In some embodiments, a method performed by a PLC device, such as a PLC meter, may include selecting one or more transmit sub-bands on which to transmit frames, where the transmit sub-bands comprise groups of six carrier frequencies. The PLC device then generates a frame comprising a tone map that indicates which transmit sub-bands are used to carry data for the frame. The tone map using two bits per transmit sub-band to indicate a status of each transmit sub-band. The PLC device then transmits the frame on the selected transmit sub-bands using OFDM. A resolution bit and a mode bit may be used to provide additional information about the transmit sub-bands, such as an amount of power adjustment that has been applied to carrier frequencies and whether dummy bits are transmitted on unused carrier frequencies.

Abstract translation: 描述了用于电力线通信（PLC）的路由协议的系统和方法。 在一些实施例中，由诸如PLC计量器之类的PLC设备执行的方法可以包括选择一个或多个在其上发射帧的发射子带，其中发射子带包括六个载波频率的组。 然后，PLC设备生成包括音调映射的帧，该音调映射指示哪些发送子带被用于携带用于该帧的数据。 每个发送子带使用两位的色调映射表示每个发送子带的状态。 然后，PLC设备使用OFDM在所选择的发送子带上发送帧。 可以使用分辨率位和模式位来提供关于发射子带的附加信息，例如已经应用于载波频率的功率调整量以及在未使用的载波频率上是否发送虚拟位。

公开(公告)号：US12261654B2

公开(公告)日：2025-03-25

申请号：US18470659

申请日：2023-09-20

Applicant: Texas Instruments Incorporated

Inventor： Il Han Kim ,  Tarkesh Pande ,  Anuj Batra

IPC: H04B3/54

Abstract: Embodiments include methods of powerline communications using a preamble with band extension is provided. A method may include receiving a packet data unit PDU. Bit-level repetition is applied to at least a portion of the PDU to create a repeated portion. Interleaving is performed per a subchannel. Pilot tones are inserted in the interleaved portion. Each data tone is modulated with respect to a nearest one of the inserted pilot tones. The PDU is transmitted over a power line.

公开(公告)号：US12177323B2

公开(公告)日：2024-12-24

申请号：US18488551

申请日：2023-10-17

Applicant: Texas Instruments Incorporated

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

IPC: H04L69/22 ,  H04B3/30 ,  H04B3/54 ,  H04B10/11 ,  H04B1/69

Abstract: 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. 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.