公开(公告)号：US20210266034A1

公开(公告)日：2021-08-26

申请号：US17316789

申请日：2021-05-11

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Kumaran VIJAYASANKAR ,  Timothy SCHMIDL ,  Ramanuja VEDANTHAM

IPC: H04B1/7143

Abstract: A system and method for enhanced channel hopping sequence is described. A pseudo random channel hopping sequence is redistributed using certain system specific parameters for separating adjacent transmission channels within a predetermined number of consecutive transmission channel numbers in the random channel hopping sequence to improve inter-channel interference between adjacent transmission channels.

公开(公告)号：US20200169293A1

公开(公告)日：2020-05-28

申请号：US16776681

申请日：2020-01-30

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Ramanuja VEDANTHAM ,  Kumaran VIJAYASANKAR ,  Ramachandran ANANTHAKRISHNAN ,  Susan YIM

IPC: H04B3/54

Abstract: Systems and methods for efficiently allocating beacon slot among multiple nodes on multiple levels within a power line communication network are described. In various implementations, these systems and methods may be applicable to Power Line Communications (PLC). For example, a method may include performing, by a communications device, assigning beacon transmission times to nodes within the communication device's network. The assigned beacon transmission times comprise a beacon slot and frame pattern. The beacon slot and frame pattern ensure that each node does not transmit a beacon in a beacon slot that is adjacent to a beacon slot assigned to a parent or child node. A beacon transmission slot is reserved for a base node in every frame. The frames may be organized into thirty-two-frame superframes, wherein each frame comprises a base node beacon slot and four switch node beacon slots.

公开(公告)号：US20180241432A1

公开(公告)日：2018-08-23

申请号：US15898923

申请日：2018-02-19

Applicant: Texas Instruments Incorporated

Inventor： Ramanuja VEDANTHAM ,  Kumaran VIJAYASANKAR ,  Ramachandran ANANTHAKRISHNAN ,  Susan YIM

IPC: H04B3/54

CPC classification number: H04B3/542 ,  H04B2203/5408 ,  H04B2203/5416 ,  H04B2203/5433

Abstract: Systems and methods for efficiently allocating beacon slot among multiple nodes on multiple levels within a power line communication network are described. In various implementations, these systems and methods may be applicable to Power Line Communications (PLC). For example, a method may include performing, by a communications device, assigning beacon transmission times to nodes within the communication device's network. The assigned beacon transmission times comprise a beacon slot and frame pattern. The beacon slot and frame pattern ensure that each node does not transmit a beacon in a beacon slot that is adjacent to a beacon slot assigned to a parent or child node. A beacon transmission slot is reserved for a base node in every frame. The frames may be organized into thirty-two-frame superframes, wherein each frame comprises a base node beacon slot and four switch node beacon slots.

公开(公告)号：US20240179527A1

公开(公告)日：2024-05-30

申请号：US18436779

申请日：2024-02-08

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Ariton E. XHAFA ,  Ram MACHNESS ,  Minghua FU ,  Ramanuja VEDANTHAM

IPC: H04W12/104 ,  H04L1/00 ,  H04L9/06 ,  H04W4/80 ,  H04W12/033 ,  H04W12/106 ,  H04W12/108 ,  H04W12/12 ,  H04W64/00 ,  H04W80/02

CPC classification number: H04W12/104 ,  H04L1/0061 ,  H04L9/0631 ,  H04W4/80 ,  H04W12/033 ,  H04W12/106 ,  H04W12/108 ,  H04W12/12 ,  H04W64/00 ,  H04W80/02

Abstract: At least some aspects of the present disclosure provide for a method of data transmission, performed by a wireless device. In some examples, the method includes receiving a localization tone having a first value. The method further includes inserting the localization tone into a data packet at an application layer of a communication protocol stack, the localization tone preceding data of a payload of the data packet and having a last bit immediately preceding a first bit of the data of the payload. The method further includes generating a modified localization tone estimating an effect of processing on the localization tone, wherein the modified localization tone is generated and configured to have the first value after undergoing processing. The method further includes replacing the localization tone in the data packet with the modified localization tone. The method further includes transmitting the data packet.

公开(公告)号：US20230291436A1

公开(公告)日：2023-09-14

申请号：US18321177

申请日：2023-05-22

Applicant: Texas Instruments Incorporated

Inventor： Kumaran VIJAYASANKAR ,  Timothy SCHMIDL ,  Ramanuja VEDANTHAM

IPC: H04B1/7143

CPC classification number: H04B1/7143 ,  H04B1/715

Abstract: A system and method for enhanced channel hopping sequence is described. A pseudo random channel hopping sequence is redistributed using certain system specific parameters for separating adjacent transmission channels within a predetermined number of consecutive transmission channel numbers in the random channel hopping sequence to improve inter-channel interference between adjacent transmission channels.

公开(公告)号：US20230063402A1

公开(公告)日：2023-03-02

申请号：US17461834

申请日：2021-08-30

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Ariton E. XHAFA ,  Ramanuja VEDANTHAM ,  Jesus Daniel TORRES BARDALES

IPC: B60L58/22 ,  B60R16/033 ,  B60L50/60 ,  H01M10/44

Abstract: In examples, a vehicular battery management system (BMS) comprises a set of battery cells and a secondary network node coupled to the set of battery cells. The secondary network node is configured to measure a parameter in the set of battery cells and generate a packet containing the parameter. The packet indicates a number of super frame slots that have elapsed from a start time of a super frame to the generation of the packet. The secondary network node is configured to wirelessly transmit the packet within the super frame to a primary network node. The primary network node is configured to wirelessly receive the packet and to determine a time at which the secondary network node generated the packet based on the indication, a time duration of each slot in the super frame, and the start time of the super frame.

公开(公告)号：US20220332213A1

公开(公告)日：2022-10-20

申请号：US17233106

申请日：2021-04-16

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Ariton E. XHAFA ,  Torbjørn SØRBY ,  Minghua FU ,  Jesus Daniel TORRES BARDALES ,  Ramanuja VEDANTHAM ,  Alexis Justine BURNIGHT ,  Archanaa SANTHANA KRISHNAN

IPC: B60L58/10

Abstract: A vehicular battery management system (BMS) comprises a battery controller, a set of battery cells, a primary network node coupled to the battery controller, and a secondary network node coupled to the set of battery cells. The primary and secondary network nodes are configured to wirelessly communicate with each other using frames that share a common frame format. The frame format includes one or more bits and a status of the one or more bits indicates whether the secondary network node is to communicate with the primary network node on behalf of another secondary network node.

公开(公告)号：US20200059265A1

公开(公告)日：2020-02-20

申请号：US16552911

申请日：2019-08-27

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Kumaran VIJAYASANKAR ,  Ramanuja VEDANTHAM ,  Tarkesh PANDE

IPC: H04B3/54

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.

公开(公告)号：US20180294840A1

公开(公告)日：2018-10-11

申请号：US15946041

申请日：2018-04-05

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.

公开(公告)号：US20240140254A1

公开(公告)日：2024-05-02

申请号：US18407719

申请日：2024-01-09

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Ariton E. XHAFA ,  Torbjørn SØRBY ,  Minghua FU ,  Jesus Daniel TORRES BARDALES ,  Ramanuja VEDANTHAM ,  Alexis Justine BURNIGHT ,  Archanaa SANTHANA KRISHNAN

IPC: B60L58/10

CPC classification number: B60L58/10 ,  B60L2240/42 ,  H04L67/12

Abstract: A vehicular battery management system (BMS) comprises a battery controller, a set of battery cells, a primary network node coupled to the battery controller, and a secondary network node coupled to the set of battery cells. The primary and secondary network nodes are configured to wirelessly communicate with each other using frames that share a common frame format. The frame format includes one or more bits and a status of the one or more bits indicates whether the secondary network node is to communicate with the primary network node on behalf of another secondary network node.