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    Long preamble and duty cycle based coexistence mechanism for power line communication (PLC) networks
    192.
    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：US10903874B2

    公开(公告)日：2021-01-26

    申请号：US16552911

    申请日：2019-08-27

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Kumaran Vijayasankar ,  Ramanuja Vedantham ,  Tarkesh Pande

    IPC: H04B3/54

    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.

    ADVANCED SWITCH NODE SELECTION FOR POWER LINE COMMUNICATIONS NETWORK
    193.
    发明申请
    ADVANCED SWITCH NODE SELECTION FOR POWER LINE COMMUNICATIONS NETWORK 审中-公开

    公开(公告)号：US20200274771A1

    公开(公告)日：2020-08-27

    申请号：US16812670

    申请日：2020-03-09

    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.

    Power efficient tunneled direct link setup apparatus, systems and methods
    194.
    发明授权
    Power efficient tunneled direct link setup apparatus, systems and methods 有权

    公开(公告)号：US10721782B2

    公开(公告)日：2020-07-21

    申请号：US15289837

    申请日：2016-10-10

    Applicant: TEXAS INSTRUMENTS INCORPORATED

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

    IPC: H04W72/02 ,  H04W76/12 ,  H04W76/14 ,  H04W88/08 ,  H04W84/12

    Abstract: Apparatus, systems, and methods disclosed herein operate to provide wireless communication between personal mobile communication (PMC) devices. 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
    196.
    发明授权
    Beacon slot allocation in prime 有权

    公开(公告)号：US10574295B2

    公开(公告)日：2020-02-25

    申请号：US15898923

    申请日：2018-02-19

    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.

    DYNAMIC MEDIUM SWITCHING FOR HYBRID NETWORKS
    198.
    发明申请
    DYNAMIC MEDIUM SWITCHING FOR HYBRID NETWORKS 审中-公开

    公开(公告)号：US20190132244A1

    公开(公告)日：2019-05-02

    申请号：US16148175

    申请日：2018-10-01

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Ramanuja Vedantham ,  Jiun-Ren Lin ,  Xiaolin Lu

    IPC: H04L12/721 ,  H04W40/12

    Abstract: A method and apparatus for dynamic medium switching in a hybrid network. A method for packet transmission by a combo device includes maintaining a wireless network confidence rating value that is indicative of packet transfer reliability of a wireless network accessed by the device. A wired network confidence rating value that is indicative of packet transfer reliability of a wired network accessed by the device is also maintained. One of the wireless network and the wired network to be used for initial transmission of the data packet is selected based on which of the wireless confidence rating value and the wired confidence rating value is indicative of a higher likelihood of the packet being successfully transmitted. The packet is routed to be transmitted via the selected network.

    Concurrent Use of Multiple Protocols on a Single Radio
    199.
    发明申请
    Concurrent Use of Multiple Protocols on a Single Radio 审中-公开

    公开(公告)号：US20190053259A1

    公开(公告)日：2019-02-14

    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: H04W72/12 ,  H04L29/06 ,  H04L12/865

    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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