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公开(公告)号：US12096357B2
公开(公告)日：2024-09-17
申请号：US18322705
申请日：2023-05-24
Applicant: Texas Instruments Incorporated
Inventor： Ariton E. Xhafa , Bradford James Campbell , Anuj Batra , Srinath Hosur
IPC: H04W52/02
CPC classification number: H04W52/0216 , Y02D30/70
Abstract: A system and method for reducing energy consumption in a wireless network. In one embodiment, a system includes a network coordinator configured to manage access to a wireless network. The network coordinator includes a controller. The controller is configured to define a channel hopping list that specifies on which channel a beacon signal is transmitted in each slot frame of the wireless network. The controller is also configured to set a number of time slots in each slot frame based on a length of the channel hopping list. The controller is further configured to transmit a first beacon signal in each slot frame on a channel specified by the channel hopping list. The number of slots in each slot frame causes the first beacon signal to be transmitted on a same channel in each slot frame.
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公开(公告)号：US20240283691A1
公开(公告)日：2024-08-22
申请号：US18651889
申请日：2024-05-01
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Mostafa Sayed Ibrahim , Il Han Kim , Tarkesh Pande , Anuj Batra
IPC: H04L27/26 , H04B3/54 , H04B7/0413 , H04L1/1867 , H04L5/00 , H04L7/04 , H04W74/0816
CPC classification number: H04L27/2656 , H04B3/54 , H04B3/542 , H04B3/546 , H04B7/0413 , H04L5/0023 , H04L7/042 , H04L27/26 , H04L27/2602 , H04L27/2603 , H04L27/2613 , H04L27/2655 , H04L27/2663 , H04W74/0816 , H04L1/188
Abstract: A PLC network system and method operative with OFDM for generating MIMO frames with suitable preamble portions configured to provide backward compatibility with legacy PLC devices and facilitate different receiver tasks such as frame detection and symbol timing, channel estimation and automatic gain control (AGC), including robust preamble detection in the presence of impulsive noise and frequency-selective channels of the PLC network. A PLC device may include a delayed correlation detector and a cross-correlation detector operating in concert to facilitate preamble detection in one implementation.
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公开(公告)号：US11985215B2
公开(公告)日：2024-05-14
申请号：US16877842
申请日：2020-05-19
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Wonsoo Kim , Mehul Soman , Anuj Batra
CPC classification number: H04L69/18 , H04B3/544 , H04L67/12 , H04B2203/5408 , H04B2203/5433 , Y04S40/18
Abstract: A communication device in a network may receive a stream of frames from the network, in which each frame includes one or more beacon packets. A communication protocol being used by the network may be identified by tracking a preselected field within a sequence of beacon packets, in which the preselected field varies in a first known manner for a first protocol and in a second known manner for a second protocol. The communication device may then join to the network using the identified communication protocol to transmit and receive data.
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公开(公告)号：US11700635B2
公开(公告)日：2023-07-11
申请号：US17396868
申请日：2021-08-09
Applicant: Texas Instruments Incorporated
Inventor： Bradford James Campbell , Ariton E. Xhafa , Anuj Batra
Abstract: A system and method for optimizing power consumption of energy harvesting nodes in a wireless sensor network. In one embodiment, a system includes a network coordinator. The network coordinator includes a wireless transceiver and a controller. The wireless transceiver is configured to provide access to the wireless sensor network. The controller is configured to determine whether a wireless device that is wirelessly communicating with the network coordinator is powered via energy harvesting. The controller is also configured to schedule, based on a determination that the wireless device is powered via energy harvesting, the wireless device to communicate via the wireless sensor network using a priority timeslot of a superframe of the wireless sensor network. The priority timeslot is a timeslot occurring in an initial portion of the superframe.
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公开(公告)号：US11700577B2
公开(公告)日：2023-07-11
申请号：US17242872
申请日：2021-04-28
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Ariton E. Xhafa , Bradford James Campbell , Anuj Batra , Srinath Hosur
IPC: H04W52/02
CPC classification number: H04W52/0216 , Y02D30/70
Abstract: A system and method for reducing energy consumption in a wireless network. In one embodiment, a system includes a network coordinator configured to manage access to a wireless network. The network coordinator includes a controller. The controller is configured to define a channel hopping list that specifies on which channel a beacon signal is transmitted in each slot frame of the wireless network. The controller is also configured to set a number of time slots in each slot frame based on a length of the channel hopping list. The controller is further configured to transmit a first beacon signal in each slot frame on a channel specified by the channel hopping list. The number of slots in each slot frame causes the first beacon signal to be transmitted on a same channel in each slot frame.
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公开(公告)号：US20210368515A1
公开(公告)日：2021-11-25
申请号：US17396868
申请日：2021-08-09
Applicant: Texas Instruments Incorporated
Inventor： Bradford James Campbell , Ariton E. Xhafa , Anuj Batra
IPC: H04W72/10
Abstract: A system and method for optimizing power consumption of energy harvesting nodes in a wireless sensor network. In one embodiment, a system includes a network coordinator. The network coordinator includes a wireless transceiver and a controller. The wireless transceiver is configured to provide access to the wireless sensor network. The controller is configured to determine whether a wireless device that is wirelessly communicating with the network coordinator is powered via energy harvesting. The controller is also configured to schedule, based on a determination that the wireless device is powered via energy harvesting, the wireless device to communicate via the wireless sensor network using a priority timeslot of a superframe of the wireless sensor network. The priority timeslot is a timeslot occurring in an initial portion of the superframe.
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公开(公告)号：US20210288691A1
公开(公告)日：2021-09-16
申请号：US17333374
申请日：2021-05-28
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： II Han Kim , Tarkesh Pande , Anuj Batra
IPC: H04B3/54
Abstract: Embodiments include methods of powerline communications using a preamble with band extension is provided. A method may include receiving a packet data unit PDU. Bit-level repetition is applied to at least a portion of the PDU to create a repeated portion. Interleaving is performed per a subchannel. Pilot tones are inserted in the interleaved portion. Each data tone is modulated with respect to a nearest one of the inserted pilot tones. The PDU is transmitted over a power line.
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公开(公告)号：US11089605B2
公开(公告)日：2021-08-10
申请号：US16557002
申请日：2019-08-30
Applicant: Texas Instruments Incorporated
Inventor： Bradford James Campbell , Ariton E. Xhafa , Anuj Batra
IPC: H04W72/10
Abstract: A system and method for optimizing power consumption of energy harvesting nodes in a wireless sensor network. In one embodiment, a system includes a network coordinator. The network coordinator includes a wireless transceiver and a controller. The wireless transceiver is configured to provide access to the wireless sensor network. The controller is configured to determine whether a wireless device that is wirelessly communicating with the network coordinator is powered via energy harvesting. The controller is also configured to schedule, based on a determination that the wireless device is powered via energy harvesting, the wireless device to communicate via the wireless sensor network using a priority timeslot of a superframe of the wireless sensor network. The priority timeslot is a timeslot occurring in an initial portion of the superframe.
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公开(公告)号：US11025301B2
公开(公告)日：2021-06-01
申请号：US16239732
申请日：2019-01-04
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Il Han Kim , Tarkesh Pande , Anuj Batra
IPC: H04B3/54
Abstract: Embodiments include methods of powerline communications using a preamble with band extension is provided. A method may include receiving a packet data unit PDU. Bit-level repetition is applied to at least a portion of the PDU to create a repeated portion. Interleaving is performed per a subchannel. Pilot tones are inserted in the interleaved portion. Each data tone is modulated with respect to a nearest one of the inserted pilot tones. The PDU is transmitted over a power line.
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公开(公告)号：US20210037491A1
公开(公告)日：2021-02-04
申请号：US17072232
申请日：2020-10-16
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Timothy M. Schmidl , Anuj Batra , Srinath Hosur
Abstract: A method includes receiving a first plurality of symbols comprising complex portions. The method further includes applying conjugate symmetry to the first plurality of symbols, producing a second plurality of symbols comprising no complex portions. The method further includes transforming the second plurality of symbols using an inverse fast Fourier transform, producing a third plurality of symbols. The method further includes interpolating the third plurality of symbols, generating a short training field comprising at least one real portion of the third plurality of symbols, generating a long training field comprising at least one real portion of the third plurality of symbols, and transmitting the short training field and long training field in a WPAN.
