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    Authentication of networked devices having low computational capacity
    81.
    发明授权
    Authentication of networked devices having low computational capacity 有权

    公开(公告)号：US11909730B2

    公开(公告)日：2024-02-20

    申请号：US17963411

    申请日：2022-10-11

    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.

    Coexistence primitives in power line communication networks
    87.
    发明授权
    Coexistence primitives in power line communication networks 有权

    公开(公告)号：US11496184B2

    公开(公告)日：2022-11-08

    申请号：US16852700

    申请日：2020-04-20

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Kumaran Vijayasankar ,  Ramanuja Vedantham ,  Tarkesh Pande

    IPC: H04B3/54 ,  H04L12/413

    Abstract: Systems and methods for setting a carrier-sensing mechanism in a PLC node are disclosed. In a PLC standard, coexistence is achieved by having the nodes detect a common preamble and backing off by a Coexistence InterFrame Space (cEIFS) time period to help the node to avoid interfering with the other technologies. In one embodiment, a PHY primitive is sent from the PHY to the MAC know that there has been a preamble detection. A two-level indication may be used—one indication after receiving the preamble and other indication after decoding the entire frame. The MAC sets the carrier-sensing mechanism based on the preamble detection.

    SELECTIVE MULTIPLE-MEDIA ACCESS CONTROL
    90.
    发明申请
    SELECTIVE MULTIPLE-MEDIA ACCESS CONTROL 有权

    公开(公告)号：US20210274593A1

    公开(公告)日：2021-09-02

    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: 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.

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