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    Long preamble and duty cycle based coexistence mechanism for power line communication (PLC) networks
    122.
    发明授权
    Long preamble and duty cycle based coexistence mechanism for power line communication (PLC) networks 有权

    公开(公告)号：US12132530B2

    公开(公告)日：2024-10-29

    申请号：US18333659

    申请日：2023-06-13

    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.

    DYNAMIC MEDIUM SWITCHING FOR HYBRID NETWORKS
    123.
    发明公开
    DYNAMIC MEDIUM SWITCHING FOR HYBRID NETWORKS 审中-公开

    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.

    Authentication of Networked Devices Having Low Computational Capacity
    124.
    发明公开
    Authentication of Networked Devices Having Low Computational Capacity 审中-公开

    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.

    POWER EFFICIENT TUNNELED DIRECT LINK SETUP APPARATUS, SYSTEMS AND METHODS
    128.
    发明公开
    POWER EFFICIENT TUNNELED DIRECT LINK SETUP APPARATUS, SYSTEMS AND METHODS 审中-公开

    公开(公告)号：US20230300916A1

    公开(公告)日：2023-09-21

    申请号：US18198913

    申请日：2023-05-18

    Applicant: Texas Instruments Incorporated

    Inventor： Leonardo William Estevez ,  Ariton Xhafa ,  Ramanuja Vedantham ,  Yanjun Sun

    IPC: H04W76/12 ,  H04W76/14

    CPC classification number: H04W76/12 ,  H04W76/14 ,  H04W88/08

    Abstract: An emulated wireless access point (AP) at a first PMC device (PMC1) establishes a first tunneled direct link setup (TDLS) session between a first station module (STA1) incorporated into the PMC1 and a second station module (STA2) incorporated into a second PMC device (PMC2). Following establishment of the TDLS session, the wireless AP is allowed to sleep; and most infrastructure management duties are handled by the STA1 during the session. PMC device battery charge may be conserved as a result. The emulated wireless AP may also establish a second TDLS link to a third station module (STA3) incorporated into a third PMC device (PMC3). The STA1 may then bridge data traffic flow between the STA2 and the STA3. Such bridging operation may enable communication between two PMC devices otherwise unable to decode data received from the other.

    CONCURRENT USE OF MULTIPLE PROTOCOLS ON A SINGLE RADIO
    129.
    发明公开
    CONCURRENT USE OF MULTIPLE PROTOCOLS ON A SINGLE RADIO 审中-公开

    公开(公告)号：US20230217427A1

    公开(公告)日：2023-07-06

    申请号：US18182530

    申请日：2023-03-13

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Arvind Kandhalu Raghu ,  Antony James Cave ,  Ramanuja Vedantham ,  Xiaoxi Bruce Zhang

    IPC: H04W28/08 ,  H04W72/0446

    CPC classification number: H04W28/0925 ,  H04W72/0446

    Abstract: A method for concurrent execution of multiple protocols using a single radio of a wireless communication device is provided that includes receiving, in a radio command scheduler, a first radio command from a first protocol stack of a plurality of protocol states executing on the wireless communication device, determining a scheduling policy for the first radio command based on a current state of each protocol stack of the plurality of protocol stacks, and scheduling the first radio command in a radio command queue for the radio based on the scheduling policy, wherein the radio command scheduler uses the radio command queue to schedule radio commands received from the plurality of protocol stacks.

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