公开(公告)号：US12034473B2

公开(公告)日：2024-07-09

申请号：US17952551

申请日：2022-09-26

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Ariton E. Xhafa ,  Xiaolin Lu ,  Janwei Zhou ,  Il Han Kim

IPC: H04B1/00 ,  H04B1/7156 ,  H04L9/06 ,  H04L9/40 ,  H04W12/037 ,  H04W12/0471 ,  H04B1/713

CPC classification number: H04B1/7156 ,  H04L9/0631 ,  H04L63/0442 ,  H04L63/061 ,  H04L63/0823 ,  H04W12/037 ,  H04W12/0471 ,  H04B1/713

Abstract: A network includes a first wireless node that communicates over a wireless network connection. The first wireless node includes a first encryption engine that processes a first initialization data set and a current transmit sequence associated with a current communication to generate a next transmit sequence that is employed to communicate with a second wireless node that derives a next received sequence that corresponds to the next transmit sequence to process a subsequent communication.

公开(公告)号：US12009961B2

公开(公告)日：2024-06-11

申请号：US17142607

申请日：2021-01-06

Applicant: TEXAS INSTRUMENTS INCORPORATED

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

IPC: H04L27/26 ,  H04B3/54 ,  H04B7/0413 ,  H04L5/00 ,  H04L7/04 ,  H04W74/0816 ,  H04L1/1867

CPC classification number: H04L27/2656 ,  H04B3/54 ,  H04B3/542 ,  H04B3/546 ,  H04B7/0413 ,  H04L5/0023 ,  H04L7/042 ,  H04L27/26 ,  H04L27/2602 ,  H04L27/2603 ,  H04L27/2613 ,  H04L27/2655 ,  H04L27/2663 ,  H04W74/0816 ,  H04L1/188

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：US11765749B2

公开(公告)日：2023-09-19

申请号：US17933245

申请日：2022-09-19

Applicant: Texas Instruments Incorporated

Inventor： Wonsoo Kim ,  Il Han Kim ,  Jianwei Zhou

IPC: H04W72/12 ,  H04W72/30 ,  H04L67/1097 ,  H04L101/622

CPC classification number: H04W72/30 ,  H04L67/1097 ,  H04W72/12 ,  H04L2101/622

Abstract: A selected network element is arranged for distributed transmission resource allocation conflict reduction. The selected network element receives a transmission from one of a first other network element and a second other network element and identifies at least one transmission resource indicated by the received transmission as being reserved by the first other network element and the second other network element. The selected network element stores an indication of each of the at least one identified transmission resource. In response to reading the stored indications, the selected network element selects a different transmission resource that is different from the transmission resource indicated by the stored indications. The selected network element transmits a transmission from the selected network element using the selected different transmission resource.

公开(公告)号：US20230081820A1

公开(公告)日：2023-03-16

申请号：US18053405

申请日：2022-11-08

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Il Han Kim ,  Xiaolin Lu

IPC: H02S50/00 ,  H02S40/32 ,  H02S40/34 ,  H02J3/38 ,  H02J3/46

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：US11495973B2

公开(公告)日：2022-11-08

申请号：US17409892

申请日：2021-08-24

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Il Han Kim ,  Xiaolin Lu

IPC: H02J3/00 ,  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：US11431381B2

公开(公告)日：2022-08-30

申请号：US17128336

申请日：2020-12-21

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Mehul Soman ,  Il Han Kim

IPC: H04B3/54 ,  H04L5/00 ,  H04L7/04 ,  H04L27/26 ,  H04L7/00

Abstract: A method of operating a communication system is disclosed. The method includes forming a data frame having plural orthogonal frequency division multiplex (OFDM) symbols. A first set of preamble subcarriers is allocated to at least one of the OFDM symbols. A second set of data subcarriers is allocated to said at least one of the OFDM symbols.

公开(公告)号：US20210320991A1

公开(公告)日：2021-10-14

申请号：US17355231

申请日：2021-06-23

Applicant: Texas Instruments Incorporated

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

IPC: H04L29/06 ,  H04B3/30 ,  H04B10/11 ,  H04B3/54

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：US11101662B2

公开(公告)日：2021-08-24

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：US20210160119A1

公开(公告)日：2021-05-27

申请号：US17142607

申请日：2021-01-06

Applicant: TEXAS INSTRUMENTS INCORPORATED

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

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

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：US10659100B2

公开(公告)日：2020-05-19

申请号：US16137456

申请日：2018-09-20

Applicant: Texas Instruments Incorporated

Inventor： Jyotirmoy Banik ,  Il Han Kim ,  Jianwei Zhou ,  Xiaolin Lu

IPC: H04B1/00 ,  H04B1/7143

Abstract: A method of generating a channel hopping sequence for a link in a wireless sensor network is provided that includes receiving performance quality data for respective frequency channels of a plurality of frequency channels in the link in a monitoring system, determining a channel quality indicator (CQI) by the monitoring system for each frequency channel based on the respective performance quality data, and determining a repetition factor by the monitoring system for each frequency channel based on the respective CQI, wherein a repetition factor for a frequency channel indicates a number of times the frequency channel is repeated in the channel hopping sequence.