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    SELECTIVE MULTIPLE-MEDIA ACCESS CONTROL
    92.
    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.

    Authentication of networked devices having low computational capacity
    95.
    发明授权
    Authentication of networked devices having low computational capacity 有权

    公开(公告)号：US10938803B2

    公开(公告)日：2021-03-02

    申请号：US16252262

    申请日：2019-01-18

    Applicant: TEXAS INSTRUMENTS INCORPORATED

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

    IPC: H04L29/06 ,  H04L9/32

    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.

    Advanced switch node selection for power line communications network
    97.
    发明授权
    Advanced switch node selection for power line communications network 有权

    公开(公告)号：US10587476B2

    公开(公告)日：2020-03-10

    申请号：US15050163

    申请日：2016-02-22

    Applicant: Texas Instruments Incorporated

    Inventor： Ramanuja Vedantham ,  Kumaran Vijayasankar ,  Xiaolin Lu

    IPC: H04L12/24 ,  H04B3/54 ,  H04B3/00 ,  H04B3/46

    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.

    Redundant traffic suppression relaying mechanism for BLE-mesh systems
    98.
    发明授权
    Redundant traffic suppression relaying mechanism for BLE-mesh systems 有权

    公开(公告)号：US10291520B2

    公开(公告)日：2019-05-14

    申请号：US15495441

    申请日：2017-04-24

    Applicant: Texas Instruments Incorporated

    Inventor： Arvind Kandhalu Raghu ,  Kaichien Tsai ,  Ramanuja Vedantham

    IPC: H04L12/721 ,  H04L12/801 ,  H04W28/14 ,  H04W40/02 ,  H04W8/00 ,  H04W88/04 ,  H04W74/08 ,  H04W84/18 ,  H04W4/80 ,  H04B7/15

    Abstract: A BLE-Mesh device includes a controller, an RF driver for driving the transceiver adapted to be coupled to an antenna, and a counter. The controller implements an applications layer including BLE and Mesh Applications, and a BLE stack and a mesh stack. A redundant traffic suppression relaying algorithm is for waiting for a random time within a selected time window from W1 to a later W2 before attempting to transmit a first packet that contains a unique source (SRC) address and a packet sequence (SEQ) number of a device that is the source of the first packet. If during the random time a packet with both the source device's SRC address and the SEQ number is received, the counter is incremented from an initial count to a current count. After the random time elapses, the current count is compared to a Cthreshold value, and the first packet is transmitted only if the current count

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