公开(公告)号：US20220070093A1

公开(公告)日：2022-03-03

申请号：US17522812

申请日：2021-11-09

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.

公开(公告)号：US11206239B2

公开(公告)日：2021-12-21

申请号：US14797764

申请日：2015-07-13

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Alper S. Akyurek ,  Ariton E. Xhafa ,  Jianwei Zhou ,  Ramanuja Vedantham

IPC: H04L29/12

Abstract: A network includes at least two nodes that employ a routing protocol to communicate across a network. One of the nodes is a parent node and another of the nodes is a child node of the parent node. An address generator assigns a unique network address to the child node by appending an address value of a number of bits to a parent address of the parent node to create the unique network address for the child node.

公开(公告)号：US11201821B2

公开(公告)日：2021-12-14

申请号：US16148175

申请日：2018-10-01

Applicant: TEXAS INSTRUMENTS INCORPORATED

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

IPC: H04L12/00 ,  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.

公开(公告)号：US11082238B2

公开(公告)日：2021-08-03

申请号：US16719737

申请日：2019-12-18

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Ramanuja Vedantham ,  Alejandro Martin Lampropulos ,  Arvind Kandhalu Raghu

IPC: H04L9/32 ,  H04L29/06 ,  H04W4/80 ,  H04W12/033 ,  H04W12/041 ,  H04W12/069 ,  H04W12/0431 ,  H04W12/0433 ,  H04W88/16 ,  H04W4/70 ,  H04W84/20

Abstract: A method for network authentication of wireless devices at a gateway is provided that includes scanning a wireless network by the gateway to discover unjoined wireless devices, joining a discovered wireless device to the gateway using a non-internet protocol implemented by the wireless device, wherein the joining results in an encrypted connection between the gateway and the wireless device, and authenticating the discovered wireless device to the gateway via the encrypted connection, wherein authentication is performed according to an authentication protocol of a network protocol management layer of the gateway.

公开(公告)号：US20210152546A1

公开(公告)日：2021-05-20

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: 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.

公开(公告)号：US20200351823A1

公开(公告)日：2020-11-05

申请号：US16877861

申请日：2020-05-19

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Kumaran Vijayasankar ,  Ramanuja Vedantham

IPC: H04W72/00

Abstract: A method of operating a mesh network is disclosed. The method includes joining a network as a child of a parent node and receiving a downlink broadcast channel from the parent node. The method further includes setting the downlink broadcast channel as an uplink broadcast channel in response to the step of receiving.

公开(公告)号：US20200322001A1

公开(公告)日：2020-10-08

申请号：US16856161

申请日：2020-04-23

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Kaichien Tsai ,  Arvind Kandhalu Raghu ,  Ramanuja Vedantham

IPC: H04B1/713 ,  H04B17/318 ,  H04W4/80 ,  H04L12/26 ,  H04L1/20 ,  H04B17/26 ,  H04L1/00

Abstract: A method for pseudo channel hopping in a node of a wireless mesh network is provided that includes scanning each channel of a plurality of channels used for packet transmission by the node, wherein each channel is scanned for a scan dwell time associated with the channel, updating statistics for each channel based on packets received by the node during the scanning of the channel, and changing scan dwell times of the plurality of channels periodically based on the statistics.

公开(公告)号：US20200305208A1

公开(公告)日：2020-09-24

申请号：US16897107

申请日：2020-06-09

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.

公开(公告)号：US10091101B2

公开(公告)日：2018-10-02

申请号：US14519990

申请日：2014-10-21

Applicant: TEXAS INSTRUMENTS INCORPORATED

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

IPC: H04J3/16 ,  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.

公开(公告)号：US20180234526A1

公开(公告)日：2018-08-16

申请号：US15894250

申请日：2018-02-12

Applicant: Texas Instruments Incorporated

Inventor： Gang Xu ,  Ramanuja Vedantham ,  Kumaran Vijayasankar ,  Anand G Dabak ,  Tarkesh Pande ,  Il Han Kim ,  Xiaolin Lu

IPC: H04L29/06 ,  H04B3/54

CPC classification number: H04L69/22 ,  H04B3/54 ,  H04B3/542 ,  H04B2203/5408

Abstract: In a disclosed embodiment, a method for communication in a network includes receiving, at a first device registered to the network, a physical layer (PHY) frame that includes a PHY header and a MAC header. The PHY frame may further include a MAC payload. The PHY header includes a destination address field. The method further includes comparing a network address of the first device to the destination address field to determine whether the destination address field stores a value having the same number of bits as the network address. When the comparison indicates that the value stored by the destination address field does not have the same number of bits as the network address, the method skips decoding the MAC header and the MAC payload.