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.

公开(公告)号：US20240297847A1

公开(公告)日：2024-09-05

申请号：US18663501

申请日：2024-05-14

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Ramanuja Vedantham ,  Jiun-Ren Lin ,  Xiaolin Lu

IPC: H04L45/00 ,  H04L45/12 ,  H04W40/12

CPC classification number: H04L45/70 ,  H04L45/124 ,  H04W40/12 ,  Y02D30/70

Abstract: Devices, systems, and computer-readable mediums are provided for dynamically switching networks in a multi-network arrangement. A system includes multiple networks; and a node common to the multiple networks. The node includes network rating circuitry configured to determine and maintain a confidence rating value on each network of multiple networks; retransmission circuitry configured to determine a maximum number of retransmission attempts allowed on each network of the multiple networks; and network selection circuitry configured to select, based on the confidence rating values of the multiple networks, a first network of the multiple networks for transmitting a packet.

公开(公告)号：US20240146717A1

公开(公告)日：2024-05-02

申请号：US18408969

申请日：2024-01-10

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Kumaran Vijayasankar ,  Oliver Shih ,  Arvind K. Raghu ,  Ramanuja Vedantham ,  Xiaolin Lu

IPC: H04L9/40 ,  H04L9/32

CPC classification number: H04L63/0823 ,  H04L9/3268 ,  H04L63/0428 ,  H04L63/0435 ,  H04L63/0442 ,  H04L63/062 ,  H04L63/0884

Abstract: Authentication of a networked device with limited computational resources for secure communications over a network. Authentication of the device begins with the supplicant node transmitting a signed digital certificate with its authentication credentials to a proxy node. Upon verifying the certificate, the proxy node then authenticates the supplicant's credentials with an authentication server accessible over the network, acting as a proxy for the supplicant node. Typically, this verification includes decryption according to a public/private key scheme. Upon successful authentication, the authentication server creates a session key for the supplicant node and communicates it to the proxy node. The proxy node encrypts the session key with a symmetric key, and transmits the encrypted session key to the supplicant node which, after decryption, uses the session key for secure communications. In some embodiments, the authentication server encrypts the session key with the symmetric key.

公开(公告)号：US20230421452A1

公开(公告)日：2023-12-28

申请号：US18465219

申请日：2023-09-12

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Ramanuja Vedantham ,  Kumaran Vijayasankar ,  Xiaolin Lu

IPC: H04L41/12 ,  H04B3/54 ,  H04B3/00 ,  H04B3/46

CPC classification number: H04L41/12 ,  H04B3/46 ,  H04B3/00 ,  H04B3/544

Abstract: An algorithm for the promotion of terminal nodes to switch nodes in a PLC network reduces overall network overhead and collisions, while ensuring the appropriate selection of a switch node and minimizing the number of levels in a PLC network. It also ensures that the terminal nodes with appropriate signal-to-noise ratios (SNRs) are promoted. It is desirable to have a network with fewer levels. The disclosed approach favors the nodes that are closer to the DC to promote them as switch nodes. This is achieved by waiting for a smaller number of PNPDUs for a node that is closer to the DC in comparison to a node that is farther away from the DC.

公开(公告)号：US11696364B2

公开(公告)日：2023-07-04

申请号：US17322987

申请日：2021-05-18

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Xiaolin Lu ,  Robert Liang ,  Mehul Soman ,  Kumaran Vijayasankar ,  Ramanuja Vedantham

IPC: H04L29/08 ,  H04W80/02

CPC classification number: H04W80/02

Abstract: Disclosed embodiments include a network device having a split network stack that includes a physical (PHY) layer associated with first and second media access control (MAC) protocol sublayers, a processing device, and memory storing instructions that, when executed by the processing device, cause the processing device to select a route through the split network stack that includes one of the first and second MAC protocol sublayers but not the other one of the first and second MAC protocol sublayers.

公开(公告)号：US11632672B2

公开(公告)日：2023-04-18

申请号：US16730485

申请日：2019-12-30

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Feng L. Mo ,  Jianwei Zhou ,  Xiaolin Lu ,  Il Han Kim ,  Kaichien Tsai

IPC: H04W12/041 ,  H04W12/03 ,  H04W40/24 ,  H04L9/08 ,  H04L45/02 ,  H04L45/00

Abstract: A multi-hop mesh network includes a root network device and a first network device. The first network device is configured to establish a first direct wireless connection with the root network device and negotiate a first shared secret key with the root network device. The multi-hop network further includes a second network device configured to establish a second direct wireless connection with the first network device and negotiate a second shared secret key with the first network device.

公开(公告)号：US11456772B2

公开(公告)日：2022-09-27

申请号：US17035891

申请日：2020-09-29

Applicant: TEXAS INSTRUMENTS INCORPORATED

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

IPC: H04B1/00 ,  H04B1/7156 ,  H04L9/40 ,  H04L9/06 ,  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：US11329693B2

公开(公告)日：2022-05-10

申请号：US16823927

申请日：2020-03-19

Applicant: Texas Instruments Incorporated

Inventor： Yanjun Sun ,  Gang Xu ,  Soon-Hyeok Choi ,  Bhadra Sandeep ,  Xiaolin Lu ,  Ariton E. Xhafa ,  Minghua Fu ,  Robert W. Liang ,  Susan Yim

IPC: H04B3/54 ,  H04B1/12 ,  H04B3/30 ,  H04B3/36 ,  H04B1/401

Abstract: An electronic communication device comprises a first transceiver capable of a bi-directional communication session on a first communication medium; a second transceiver capable of a bi-directional communication session on a second communication medium; and a control logic coupled to the first transceiver and the second transceiver and capable of implementing a convergence layer, wherein the control logic is configured to receive, from the first transceiver, a first signal; and cause, in response to the first signal, data received and transmitted by the first transceiver on the first communication medium as part of a communication session to be received and transmitted instead by the second transceiver on the second communication medium.

公开(公告)号：US20210391725A1

公开(公告)日：2021-12-16

申请号：US17409892

申请日：2021-08-24

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：US10965339B2

公开(公告)日：2021-03-30

申请号：US16877062

申请日：2020-05-18

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 includes receiving performance quality data for respective frequency channels 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. A repetition factor for a frequency channel indicates a number of times the frequency channel is repeated in the channel hopping sequence.