公开(公告)号：US20240048643A1

公开(公告)日：2024-02-08

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 ,  H04B10/11 ,  H04B3/54

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

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.

公开(公告)号：US11824597B2

公开(公告)日：2023-11-21

申请号：US17333374

申请日：2021-05-28

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Il Han Kim ,  Tarkesh Pande ,  Anuj Batra

IPC: H04B3/54

CPC classification number: H04B3/542 ,  H04B2203/5433 ,  H04B2203/5466

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：US11350311B2

公开(公告)日：2022-05-31

申请号：US17101650

申请日：2020-11-23

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Wonsoo Kim ,  Il Han Kim

IPC: G06F1/00 ,  H04W28/08 ,  H04W52/02 ,  H04W52/38

Abstract: A utilization factor controller is to estimate power consumption values corresponding to a plurality of first utilization factor and second utilization factor pairs, the first utilization factor corresponding to utilization of the first transceiver that is to communicate using a first protocol, the second utilization factor corresponding to utilization of the second transceiver that is to communicate using a second protocol different form the first protocol, the utilization factor controller to select a first utilization factor and second utilization factor pair based on the estimated power consumption value. A transmission time controller is to calculate first and second transmission times to be used by the first and second transceiver based on the selected first utilization factor and second utilization factor pair. A data allocator is to allocate data for transmission by the first transceiver and the second transceiver according to the first and second transmission times.

公开(公告)号：US11005530B2

公开(公告)日：2021-05-11

申请号：US16744376

申请日：2020-01-16

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Badri N Varadarajan ,  Anand Dabak ,  Il Han Kim

IPC: H04B3/54 ,  H04L1/00 ,  H04L29/06 ,  H04L29/08

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.

公开(公告)号：US10917279B2

公开(公告)日：2021-02-09

申请号：US15206489

申请日：2016-07-11

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Mostafa Sayed Ibrahim ,  Il Han Kim ,  Tarkesh Pande ,  Anuj Batra

IPC: H04B3/54 ,  H04L27/26 ,  H04L5/00 ,  H04B7/0413 ,  H04W74/08 ,  H04L7/04 ,  H04L1/18

Abstract: A PLC network system and method operative with OFDM for generating MIMO frames with suitable preamble portions configured to provide backward compatibility with legacy PLC devices and facilitate different receiver tasks such as frame detection and symbol timing, channel estimation and automatic gain control (AGC), including robust preamble detection in the presence of impulsive noise and frequency-selective channels of the PLC network. A PLC device may include a delayed correlation detector and a cross-correlation detector operating in concert to facilitate preamble detection in one implementation.

公开(公告)号：US10720963B2

公开(公告)日：2020-07-21

申请号：US16160864

申请日：2018-10-15

Applicant: Texas Instruments Incorporated

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

IPC: H04B3/54

Abstract: In a powerline communications (PLC) network having a first node and at least a second node on a PLC channel utilizing a band including a plurality of tones, based on at least one channel quality indicator (CQI), the first node allocates for a tone map response payload only a single (1) power control bit for each of a plurality of subbands having two or more tones. The power control bit indicates a first power state or a second power state. The first node transmits a frame including the tone map response payload to the second node. The second node transmits a frame having boosted signal power for the tones in the subbands which have the first power state compared to a lower signal power for the tones in the subbands which have the second power state.

公开(公告)号：US20200176992A1

公开(公告)日：2020-06-04

申请号：US16782290

申请日：2020-02-05

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Il Han Kim ,  Xiaolin Lu

IPC: H02J3/38 ,  H02S40/32 ,  H02S40/34

Abstract: A photovoltaic system with an inverter, at least one solar panel for providing electrical power, and electrical wiring for coupling electrical power from the at least one solar panel to the inverter. Also included is a transmitter for transmitting a messaging protocol along the electrical wiring, where the protocol includes a multibit wireline signal. Also included is circuitry for selectively connecting the electrical power from the at least one solar panel along the electrical wiring to the inverter in response to the messaging protocol.

公开(公告)号：US10560909B2

公开(公告)日：2020-02-11

申请号：US15703700

申请日：2017-09-13

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Ariton E. Xhafa ,  Jianwei Zhou ,  Il Han Kim ,  Kaichien Tsai ,  Xiaolin Lu

IPC: H04W56/00 ,  H04W24/08 ,  H04W72/12 ,  H04W48/16 ,  H04B1/707 ,  H04L5/00 ,  H04J3/06

Abstract: A network includes a plurality of parent nodes to communicate in a wireless network via a wireless network protocol. A network node establishes a network connection to one of the parent nodes of the plurality of parent nodes in response to received beacons from the parent nodes. A signal analyzer in the network node processes a received signal strength of the beacons and the number of beacons received over a given time period from each of the parent nodes. The signal analyzer selects the parent node by analyzing the received signal strength for a number of beacons received from each parent node with respect to a number of expected beacons transmitted from each parent node of the plurality of parent nodes over the given time period.

公开(公告)号：US10541727B2

公开(公告)日：2020-01-21

申请号：US16200928

申请日：2018-11-27

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Badri N Varadarajan ,  Anand Dabak ,  Il Han Kim

IPC: H04B3/54 ,  H04L1/00 ,  H04L29/06 ,  H04L29/08

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.

公开(公告)号：US10135492B2

公开(公告)日：2018-11-20

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: H04B3/54 ,  H04L12/64

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.