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    TARGET DIRECTED JOINING ALGORITHM FOR MULTI-PAN NETWORKS
    1.
    发明申请
    TARGET DIRECTED JOINING ALGORITHM FOR MULTI-PAN NETWORKS 审中-公开

    公开(公告)号：US20150046703A1

    公开(公告)日：2015-02-12

    申请号：US14341334

    申请日：2014-07-25

    Applicant: Texas Instruments Incorporated

    Inventor： ROBERT LIANG ,  KUMARAN VIJAYASANKAR

    IPC: H04W12/08 ,  H04L9/08 ,  H04W4/00

    CPC classification number: H04W12/08 ,  H04B2203/5433 ,  H04L9/0816 ,  H04W4/06 ,  H04W4/80 ,  H04W12/02

    Abstract: A method of network joining. A first service node (SN) of SNs in a multi-Personal Area Network including data concentrators (DCs) that communicate with a server over a common communications medium configures a beacon request frame (BRF) including a Media Access Control (MAC) header including a header information element (HIE) or a payload IE (PIE), and a MAC CRC footer. The BRF includes a unique address of a first DC corresponding to the first SN or an encrypted data sequence with a key. The first SN transmits the BRF over the common communications medium. Responsive to receiving the BRF, the first DC processes the BRF to identify the unique address or has the key and applies the key to decipher the encrypted BRF. The first DC transmits a beacon frame over the common communications medium, wherein others of the plurality of DCs do not transmit respective beacon frames.

    SLEEPY DEVICE OPERATION IN ASYNCHRONOUS CHANNEL HOPPING NETWORKS
    2.
    发明申请
    SLEEPY DEVICE OPERATION IN ASYNCHRONOUS CHANNEL HOPPING NETWORKS 有权

    公开(公告)号：US20210320687A1

    公开(公告)日：2021-10-14

    申请号：US17356792

    申请日：2021-06-24

    Applicant: Texas Instruments Incorporated

    Inventor： KUMARAN VIJAYASANKAR ,  ROBERT LIANG ,  JYOTHSNA KUNDURU ,  KWANG SEOP EOM

    IPC: H04B1/7156 ,  H04W4/80 ,  H04W52/02

    Abstract: A radio communications device includes a RTC configured to run even during sleep for receiving from a coordinator node (CN) in an asynchronous channel hopping WPAN an asynchronous hopping sequence (AHS) frame that includes the CN's hopping sequence. A processor implements a stored sleepy device operation in asynchronous channel hopping networks algorithm. The algorithm is for determining a time stamp for the AHS frame and the CN's initial timing position within the hopping sequence, storing the time stamp, going to sleep and upon waking up changing a frequency band of its receive (Rx) channel to an updated fixed channel. A data request command frame is transmitted by the device on the CN's listening channel that is calculated from the CN's hopping sequence, time stamp, CN's initial timing position and current time, and the device receives an ACK frame transmitted by the CN at the updated fixed channel of Rx operation.

    IMPLICIT EXCHANGE OF CHANNEL INFORMATION FOR UN-SLOTTED CHANNEL HOPPING NETWORKS
    3.
    发明申请
    IMPLICIT EXCHANGE OF CHANNEL INFORMATION FOR UN-SLOTTED CHANNEL HOPPING NETWORKS 审中-公开

    公开(公告)号：US20180376437A1

    公开(公告)日：2018-12-27

    申请号：US15694196

    申请日：2017-09-01

    Applicant: Texas Instruments Incorporated

    Inventor： KUMARAN VIJAYASANKAR ,  ARVIND KANDHALU RAGHU ,  JYOTHSNA KUNDURU

    IPC: H04W56/00 ,  H04W72/04 ,  H04L12/26 ,  H04L5/00

    Abstract: A method of channel access for a radio device in an asynchronous channel hopping wireless network includes a channel hopping coordinator first radio device transmitting its receive (Rx) channel hopping sequence to a fixed or semi-channel hopping sleepy radio device. The sleepy radio device tracks the first radio device's Rx channel using the channel hopping sequence and transmits a poll frame exclusive of a unicast schedule information element (US-IE) on the first radio device's current Rx channel to the first radio device. The sleepy radio device moves to an updated Rx channel that is a function of the current Rx channel. The first radio device receives the poll frame and then computes the updated Rx channel as the function of the current Rx channel. After the computing, the first radio device transmits a data frame to the sleepy radio device on the updated Rx channel.

    MANAGING MULTIPLE MODULATION SCHEMES WITH CODED MODULATION INDICATOR IN DEFAULT-MODULATED PREAMBLE
    4.
    发明申请
    MANAGING MULTIPLE MODULATION SCHEMES WITH CODED MODULATION INDICATOR IN DEFAULT-MODULATED PREAMBLE 有权
    使用编码调制指示器在默认调制前缀中管理多个调制方案

    公开(公告)号：US20160308700A1

    公开(公告)日：2016-10-20

    申请号：US15007224

    申请日：2016-01-27

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： KUMARAN VIJAYASANKAR ,  TIMOTHY M. SCHMIDL ,  RAMANUJA VEDANTHAM

    IPC: H04L27/12 ,  H04W72/04 ,  H04L29/06 ,  H04L27/26 ,  H04B1/707

    CPC classification number: H04L27/12 ,  H04B1/707 ,  H04L1/007 ,  H04L1/0072 ,  H04L1/0086 ,  H04L27/0008 ,  H04L27/2601 ,  H04L69/22

    Abstract: A wireless transmission having a header and a payload is sent by transmitting a preamble of the header with a first modulation, wherein the preamble carries a coded modulation indicator. The payload and a remainder of the header are transmitted with a modulation associated with the coded modulation indicator. When the transmission is received, the preamble is demodulated in accordance with the first modulation. The coded modulation indicator is then decoded, and the payload and the remainder of the header are demodulated in accordance with the modulation indicated by the decoded modulation indicator.

    Abstract translation: 具有报头和有效载荷的无线传输是通过以第一调制方式发送报头的前同步码来发送的，其中前置码携带编码调制指示符。 通过与编码调制指示器相关联的调制来发送有效载荷和报头的剩余部分。 当接收到发送时，根据第一调制解调前导码。 然后对编码调制指示符进行解码，并根据由解码的调制指示符指示的调制来解调有效负载和报头的剩余部分。

    SLEEPY DEVICE OPERATION IN ASYNCHRONOUS CHANNEL HOPPING NETWORKS
    5.
    发明公开
    SLEEPY DEVICE OPERATION IN ASYNCHRONOUS CHANNEL HOPPING NETWORKS 审中-公开

    公开(公告)号：US20230223986A1

    公开(公告)日：2023-07-13

    申请号：US18185609

    申请日：2023-03-17

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： KUMARAN VIJAYASANKAR ,  ROBERT LIANG ,  JYOTHSNA KUNDURU ,  KWANG SEOP EOM

    IPC: H04W52/02 ,  H04B1/7156

    CPC classification number: H04W52/0274 ,  H04B1/7156 ,  H04B2201/71338

    Abstract: A radio communications device includes a RTC configured to run even during sleep for receiving from a coordinator node (CN) in an asynchronous channel hopping WPAN an asynchronous hopping sequence (AHS) frame that includes the CN's hopping sequence. A processor implements a stored sleepy device operation in asynchronous channel hopping networks algorithm. The algorithm is for determining a time stamp for the AHS frame and the CN's initial timing position within the hopping sequence, storing the time stamp, going to sleep and upon waking up changing a frequency band of its receive (Rx) channel to an updated fixed channel. A data request command frame is transmitted by the device on the CN's listening channel that is calculated from the CN's hopping sequence, time stamp, CN's initial timing position and current time, and the device receives an ACK frame transmitted by the CN at the updated fixed channel of Rx operation.

    DATA FRAME FOR PLC HAVING DESTINATION ADDRESS IN THE PHY HEADER
    8.
    发明申请
    DATA FRAME FOR PLC HAVING DESTINATION ADDRESS IN THE PHY HEADER 审中-公开
    数据帧用于PLC中的目标地址在PHY头

    公开(公告)号：US20150085881A1

    公开(公告)日：2015-03-26

    申请号：US14556373

    申请日：2014-12-01

    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: A physical layer (PHY) data frame for use in conjunction with processor in a node, processor coupled to a program memory for storing a sequence of operating instructions. The frame has a preamble, PHY header, a MAC header and a MAC payload. The PHY header includes a destination address field having a destination address therein. The destination address is used by the processor to determine match with the node address.

    Abstract translation: 与节点中的处理器结合使用的物理层（PHY）数据帧，耦合到程序存储器的处理器，用于存储操作指令序列。 帧具有前同步码，PHY报头，MAC报头和MAC有效载荷。 PHY标头包括其中具有目的地地址的目的地地址字段。 处理器使用目的地地址来确定与节点地址的匹配。

    FLOW CONTROL FOR POWERLINE COMMUNICATIONS
    9.
    发明申请
    FLOW CONTROL FOR POWERLINE COMMUNICATIONS 审中-公开
    POWERLINE通信流量控制

    公开(公告)号：US20150071077A1

    公开(公告)日：2015-03-12

    申请号：US14540111

    申请日：2014-11-13

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： KUMARAN VIJAYASANKAR ,  RAMANUJA VEDANTHAM ,  ANAND G. DABAK ,  TARKESH PANDE ,  IL HAN KIM

    IPC: H04L12/825 ,  H04L12/801 ,  H04B3/54

    CPC classification number: H04L47/266 ,  H04B3/542 ,  H04B2203/5408 ,  H04L47/12 ,  H04L47/127 ,  H04L47/30 ,  H04L47/32 ,  Y02D50/10

    Abstract: A method of powerline communications in a powerline communications (PLC) network including a first PLC device and at least a second PLC device. The first PLC device transmits a data frame to the second node over a PLC channel. The second PLC device has a data buffer for storing received information. The second PLC device runs a flow control algorithm which determines a current congestion condition or a projected congestion condition of the data buffer based on at least one congestion parameter. The current congestion condition and projected congestion condition include nearly congested and fully congested. When the current or projected congestion condition is either nearly congested or fully congested, the second PLC device transmits a BUSY including frame over the PLC channel to at least the first PLC device. The first PLC device defers transmitting of any frames to the second PLC device for a congestion clearing wait time.

    Abstract translation: 一种包括第一PLC设备和至少第二PLC设备的电力线通信（PLC）网络中的电力线通信的方法。 第一个PLC设备通过PLC通道将数据帧发送到第二个节点。 第二PLC设备具有用于存储接收到的信息的数据缓冲器。 第二PLC设备运行流控制算法，其基于至少一个拥塞参数来确定数据缓冲器的当前拥塞状况或预计拥塞状况。 目前的拥挤状况和预计的拥挤情况包括几乎拥挤和充分拥挤。 当当前或预计的拥塞状况几乎拥塞或完全拥塞时，第二PLC设备将至少包含PLC通道的包括帧的BUSY发送到至少第一PLC设备。 第一个PLC设备将任何帧的传输延迟到第二个PLC设备，以获得拥塞清除等待时间。

    SLEEPY DEVICE OPERATION IN ASYNCHRONOUS CHANNEL HOPPING NETWORKS
    10.
    发明公开
    SLEEPY DEVICE OPERATION IN ASYNCHRONOUS CHANNEL HOPPING NETWORKS 审中-公开

    公开(公告)号：US20240275428A1

    公开(公告)日：2024-08-15

    申请号：US18647678

    申请日：2024-04-26

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： KUMARAN VIJAYASANKAR ,  ROBERT LIANG ,  JYOTHSNA KUNDURU ,  KWANG SEOP EOM

    IPC: H04B1/7156 ,  H04W4/80 ,  H04W52/02

    CPC classification number: H04B1/7156 ,  H04W4/80 ,  H04W52/0235 ,  H04W52/0274 ,  H04B2001/71563 ,  H04B2201/71338 ,  Y02D30/70

    Abstract: A radio communications device includes a RTC configured to run even during sleep for receiving from a coordinator node (CN) in an asynchronous channel hopping WPAN an asynchronous hopping sequence (AHS) frame that includes the CN's hopping sequence. A processor implements a stored sleepy device operation in asynchronous channel hopping networks algorithm. The algorithm is for determining a time stamp for the AHS frame and the CN's initial timing position within the hopping sequence, storing the time stamp, going to sleep and upon waking up changing a frequency band of its receive (Rx) channel to an updated fixed channel. A data request command frame is transmitted by the device on the CN's listening channel that is calculated from the CN's hopping sequence, time stamp, CN's initial timing position and current time, and the device receives an ACK frame transmitted by the CN at the updated fixed channel of Rx operation.

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