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公开(公告)号：US20130104117A1
公开(公告)日：2013-04-25
申请号：US13659866
申请日：2012-10-24
Applicant: Texas Instruments Incorporated
Inventor： Ramanuja Vedantham , Kumaran Vijayasankar , Ramachandran Ananthakrishnan , Susan Yim
CPC classification number: G06F8/654 , H04B3/542 , H04B2203/5408
Abstract: Systems and methods for implementing data concentrated initiated multicast firmware upgrade in power line communications (PLC) are described. In an illustrative embodiment, a method performed by a PLC device may include forming a group of PLC devices to receive a transmission of a data set, the group being organized according to a hierarchical structure, transmitting the data set to the group of PLC devices, determining whether a PLC device in the lowest level of the hierarchical structure is missing one or more portions of the data set, and retransmitting at least the missing portions of the data set until the lowest level of PLC devices each have the full data set.
Abstract translation: 描述了在电力线通信（PLC）中实现数据集中发起的组播固件升级的系统和方法。 在说明性实施例中，由PLC设备执行的方法可以包括：形成一组PLC设备，以接收数据集的传输，所述数据组的传输是根据层次结构组织的，将数据集发送到PLC设备组， 确定分层结构的最低级别的PLC设备是否缺少数据集的一个或多个部分，并且至少重传数据集的缺失部分，直到最低级别的PLC设备各自具有完整数据集。
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公开(公告)号：US20250168159A1
公开(公告)日：2025-05-22
申请号：US19028935
申请日：2025-01-17
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Kumaran Vijayasankar , Oliver Shih , Arvind K. Raghu , Ramanuja Vedantham , Xiaolin Lu
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.
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公开(公告)号：US20250106914A1
公开(公告)日：2025-03-27
申请号：US18971170
申请日：2024-12-06
Applicant: Texas Instruments Incorporated
Inventor： Leonardo William Estevez , Ariton Xhafa , Ramanuja Vedantham , Yanjun Sun
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.
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公开(公告)号：US12015553B2
公开(公告)日：2024-06-18
申请号：US17522812
申请日：2021-11-09
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Ramanuja Vedantham , Jiun-Ren Lin , Xiaolin Lu
CPC classification number: H04L45/70 , H04L45/124 , H04W40/12 , Y02D30/70
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.
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公开(公告)号：US11943621B2
公开(公告)日：2024-03-26
申请号：US16216919
申请日：2018-12-11
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Ariton E. Xhafa , Ram Machness , Minghua Fu , Ramanuja Vedantham
IPC: H04W12/104 , H04L1/00 , H04L9/06 , H04W4/80 , H04W12/033 , H04W12/106 , H04W12/108 , H04W12/12 , H04W64/00 , H04W80/02
CPC classification number: H04W12/104 , H04L1/0061 , H04L9/0631 , H04W4/80 , H04W12/033 , H04W12/106 , H04W12/108 , H04W12/12 , H04W64/00 , H04W80/02
Abstract: At least some aspects of the present disclosure provide for a method of data transmission, performed by a wireless device. In some examples, the method includes receiving a localization tone having a first value. The method further includes inserting the localization tone into a data packet at an application layer of a communication protocol stack, the localization tone preceding data of a payload of the data packet and having a last bit immediately preceding a first bit of the data of the payload. The method further includes generating a modified localization tone estimating an effect of processing on the localization tone, wherein the modified localization tone is generated and configured to have the first value after undergoing processing. The method further includes replacing the localization tone in the data packet with the modified localization tone. The method further includes transmitting the data packet.
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Patent Agency Ranking
公开(公告)号：US11924822B2
公开(公告)日：2024-03-05
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: H04B7/00 , H04L47/6275 , H04L69/18 , H04W28/08 , H04W72/0446 , H04W72/12 , H04W72/1263 , H04W72/566 , H04W4/80
CPC classification number: H04W72/1215 , H04L47/6275 , H04L69/18 , H04W28/0925 , H04W72/0446 , H04W72/1263 , H04W72/569 , 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.
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公开(公告)号：US11812268B2
公开(公告)日：2023-11-07
申请号：US17491218
申请日：2021-09-30
Applicant: Texas Instruments Incorporated
Inventor： Ariton E. Xhafa , Vishal Coelho , Alexis Justine Burnight , Ramanuja Vedantham , Karl-Heinz Steinmetz
IPC: H04W12/104 , H04W12/106
CPC classification number: H04W12/106
Abstract: A communication circuit for communications between a controller and a subsystem with a monitored electrical component is described. The communication circuit includes network formation circuitry configured to establish a wireless network between a primary wireless node adapted to be coupled to the controller and a secondary wireless node coupled to the subsystem. The communication circuit also includes data transfer circuitry configured to perform data transfers between the primary wireless node and the secondary wireless node. The communication circuit further includes data integrity circuitry configured to: generate a hash for data received by the communication circuit; and verify the hash before the data transfer circuitry performs a data transfer of the data between the primary wireless node and the secondary wireless node.
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公开(公告)号：US11765040B2
公开(公告)日：2023-09-19
申请号：US17521968
申请日：2021-11-09
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Ramanuja Vedantham , Kumaran Vijayasankar , Xiaolin Lu
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.
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179.发明授权公开(公告)号：US11722174B2
公开(公告)日：2023-08-08
申请号：US17119831
申请日：2020-12-11
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.
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公开(公告)号：US11700033B2
公开(公告)日：2023-07-11
申请号：US17316789
申请日：2021-05-11
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Kumaran Vijayasankar , Timothy Schmidl , Ramanuja Vedantham
IPC: H04B1/7143 , H04B1/715 , H04W16/14 , H04B1/713
CPC classification number: H04B1/7143 , H04B1/713 , H04B1/715 , H04B2001/7154 , H04W16/14
Abstract: A system and method for enhanced channel hopping sequence is described. A pseudo random channel hopping sequence is redistributed using certain system specific parameters for separating adjacent transmission channels within a predetermined number of consecutive transmission channel numbers in the random channel hopping sequence to improve inter-channel interference between adjacent transmission channels.
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