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公开(公告)号：US11706725B2
公开(公告)日：2023-07-18
申请号：US17072232
申请日：2020-10-16
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Timothy M. Schmidl , Anuj Batra , Srinath Hosur
CPC classification number: H04W56/001 , H04L27/2613 , H04L27/2634 , H04W4/80 , H04L27/26132
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.
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公开(公告)号：US20210250859A1
公开(公告)日：2021-08-12
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
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：US11026170B2
公开(公告)日：2021-06-01
申请号：US13951798
申请日：2013-07-26
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Ariton E. Xhafa , Bradford James Campbell , Anuj Batra , Srinath Hosur
IPC: H04W52/02
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：US20210160003A1
公开(公告)日：2021-05-27
申请号：US17165520
申请日：2021-02-02
Applicant: Texas Instruments Incorporated
Inventor： Samantha Rose Summerson , Anuj Batra , Srinath Hosur , Georgios Angelopoulos
Abstract: A network coding system. A packet decoding engine receives a number of received packets. A packet repository is coupled to the decoding engine to temporarily store the received packets. The packet decoding engine is configured to generate a decoding matrix by forming a sub-matrix by selecting columns of a network code matrix that have indices that are the same as the indices of the encoded packets that correspond to the selected received packets. The packet decoding engine is also configured to invert the sub-matrix to form the decoding matrix and multiply the received packet matrix by the decoding matrix to generate a recovered matrix where each column corresponds to a decoded packet.
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公开(公告)号：US10917279B2
公开(公告)日：2021-02-09
申请号：US15206489
申请日：2016-07-11
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Mostafa Sayed Ibrahim , Il Han Kim , Tarkesh Pande , Anuj Batra
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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Patent Agency Ranking
公开(公告)号：US20200351389A1
公开(公告)日：2020-11-05
申请号：US16877842
申请日：2020-05-19
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Wonsoo Kim , Mehul Soman , Anuj Batra
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：US10813064B2
公开(公告)日：2020-10-20
申请号：US16044074
申请日：2018-07-24
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.
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公开(公告)号：US20190173643A1
公开(公告)日：2019-06-06
申请号：US16268050
申请日：2019-02-05
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Jing Lin , Tarkesh Pande , II Han Kim , Anuj Batra
CPC classification number: H04L5/0048 , H04B3/54 , H04B2203/5408 , H04L27/20 , H04L27/36 , H04W28/04 , H04W72/1263
Abstract: A method of encoding a first bit and a second bit for transmission on a transmission band is provided. The method includes receiving a bit stream that includes the first and second bits, mapping the first bit into a first symbol, mapping the second bit into a second symbol, differentially encoding at least the first symbol and the second symbol, and causing the first and second symbols to be transmitted on a transmission band as part of a symbol stream.
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公开(公告)号：US10135492B2
公开(公告)日：2018-11-20
申请号：US14072765
申请日：2013-11-05
Applicant: Texas Instruments Incorporated
Inventor： Kumaran Vijayasankar , Ramanuja Vedantham , Anuj Batra , Tarkesh Pande , Il Han Kim
Abstract: In a method for communicating with a plurality of devices using different communication protocols, a signal is received at a transceiver device from a neighbor device via a physical layer of a communication media. At a first time the signal contains a header frame from a first device conforming to a first communication protocol and at another time the signal contains a header frame from a second device conforming to a second communication protocol. The transceiver determines which of the different communication protocols is being used by each of the plurality of devices. The transceiver may then process inbound payload data using the indentified protocol type. Data frames are transmitted to the first device using the first communication protocol and data frames are transmitted to the second device using the second communication protocol.
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公开(公告)号：US20180332550A1
公开(公告)日：2018-11-15
申请号：US16044074
申请日：2018-07-24
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Timothy M. Schmidl , Anuj Batra , Srinath Hosur
CPC classification number: H04W56/001 , H04L27/2613 , H04L27/2634 , H04W4/80
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.
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