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    Authentication of Networked Devices Having Low Computational Capacity
    183.
    发明申请
    Authentication of Networked Devices Having Low Computational Capacity 有权

    公开(公告)号：US20230032116A1

    公开(公告)日：2023-02-02

    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

    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.

    Authentication of networked devices having low computational capacity
    185.
    发明授权
    Authentication of networked devices having low computational capacity 有权

    公开(公告)号：US11470077B2

    公开(公告)日：2022-10-11

    申请号：US17159016

    申请日：2021-01-26

    Applicant: TEXAS INSTRUMENTS INCORPORATED

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

    IPC: H04L9/40 ,  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.

    Network address assignment and reclamation for hierarchical based RPL networks
    186.
    发明授权
    Network address assignment and reclamation for hierarchical based RPL networks 有权

    公开(公告)号：US11368393B2

    公开(公告)日：2022-06-21

    申请号：US16696150

    申请日：2019-11-26

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Ramanuja Vedantham ,  Kumaran Vijayasankar ,  Arvind K. Raghu ,  Ariton E. Xhafa

    IPC: H04L45/02 ,  H04L45/48 ,  H04L61/5007

    Abstract: Disclosed embodiments relate to a Hierarchical Do-Dag based RPL (H-DOC) network configuration where the network address of each node corresponds to its location within the hierarchical network. Network addresses are initialized hierarchically. Candidate patent nodes signal availability. Candidate child nodes respond to a selected candidate parent node with a temporary address. The selected candidate parent node acknowledges selection and communicates a hierarchical address for the child node in a transmission to the temporary address. The child node changes its address to the hierarchical address from the parent node. When a node switches parent nodes, it signals the old parent node to deallocate it as a child node, and then signals a selected candidate parent node with a temporary address.

    Concurrent use of multiple protocols on a single radio
    187.
    发明授权
    Concurrent use of multiple protocols on a single radio 有权

    公开(公告)号：US11219039B2

    公开(公告)日：2022-01-04

    申请号：US16101121

    申请日：2018-08-10

    Applicant: Texas Instruments Incorporated

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

    IPC: H04B7/00 ,  H04W72/12 ,  H04L12/865 ,  H04L29/06 ,  H04W4/80

    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.

    POWER EFFICIENT TUNNELED DIRECT LINK SETUP APPARATUS, SYSTEMS AND METHODS
    188.
    发明申请
    POWER EFFICIENT TUNNELED DIRECT LINK SETUP APPARATUS, SYSTEMS AND METHODS 有权

    公开(公告)号：US20210400742A1

    公开(公告)日：2021-12-23

    申请号：US17467526

    申请日：2021-09-07

    Applicant: Texas Instruments Incorporated

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

    IPC: H04W76/12 ,  H04W76/14

    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.

    Beacon slot allocation in prime
    189.
    发明授权
    Beacon slot allocation in prime 有权

    公开(公告)号：US11139857B2

    公开(公告)日：2021-10-05

    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.

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