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公开(公告)号：US20140036751A1
公开(公告)日：2014-02-06
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
CPC classification number: H04W52/0216 , Y02D70/144 , Y02D70/22
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.
Abstract translation: 一种降低无线网络能耗的系统和方法。 在一个实施例中，系统包括被配置为管理对无线网络的接入的网络协调器。 网络协调器包括一个控制器。 控制器被配置为定义信道跳频列表，其指定在无线网络的每个时隙帧中在哪个信道上发送信标信号。 控制器还被配置为基于信道跳频列表的长度来设置每个时隙帧中的多个时隙。 控制器还被配置为在由信道跳频列表指定的信道上的每个时隙帧中发送第一信标信号。 每个时隙帧中的时隙数使得在每个时隙帧中在同一信道上发送第一信标信号。
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公开(公告)号：US20230163787A1
公开(公告)日：2023-05-25
申请号：US18094710
申请日：2023-01-09
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Mohamed Farouk Mansour , June Chul Roh , Srinath Hosur
CPC classification number: H03M13/2957 , H03M13/27 , H03M13/2966 , H03M13/09
Abstract: A system and method for providing error control coding for backhaul applications are disclosed. Data is first encoded using Reed-Solomon (RS) coding. The output RS blocks are then turbo coded. The size of the output RS blocks is selected to match the input of the turbo encoder. The bits from the RS blocks may be interleaved to create the input turbo blocks. Cyclic Redundancy Check (CRC) parity bits may be added to the data prior to RS coding.
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公开(公告)号：US20230011884A1
公开(公告)日：2023-01-12
申请号：US17929481
申请日：2022-09-02
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： June Chul Roh , Pierre Bertrand , Srinath Hosur , Vijay Pothukuchi , Mohamed Farouk Mansour
Abstract: A method for uplink (UL) wireless backhaul communication at a wireless backhaul remote unit in a radio access network comprising receiving a configuration for radio frames and a transmission schedule through a downlink (DL) physical layer broadcast channel, wherein the transmission schedule comprises a transmission allocation for the remote unit, generating a UL data frame, wherein generating the UL data frame comprises performing forward error correction (FEC) encoding on a data bit stream to generate a plurality of FEC codewords, wherein performing the FEC encoding comprises performing Reed Solomon (RS) encoding on the data bit stream to generate a plurality of RS codewords, performing byte interleaving on the RS codewords, and performing Turbo encoding on the byte interleaved RS codewords to generate one or more Turbo codewords, wherein each Turbo codeword is encoded from more than one RS codeword, and transmitting the UL data frame according to the transmission allocation.
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公开(公告)号：US10911062B2
公开(公告)日：2021-02-02
申请号：US16583944
申请日：2019-09-26
Applicant: Texas Instruments Incorporated
Inventor： Corina Ioana Ionita , Jun Chul Roh , Mohamed F. Mansour , Srinath Hosur
Abstract: A method includes receiving multiple bits to be transmitted. The method also includes applying a first binary alphabet polar code to a first subset of the multiple bits to generate first encoded bits. The first encoded bits are associated with a first bit level of a multilevel coding scheme. The method further includes generating one or more symbols using the first encoded bits and bits associated with a second bit level of the multilevel coding scheme. The first binary alphabet polar code is associated with a first coding rate. In addition, the method could include applying a second binary alphabet polar code to a second subset of the multiple bits to generate second encoded bits. The second encoded bits are associated with the second bit level. The second binary alphabet polar code is associated with a second coding rate such that the bit levels have substantially equal error rates.
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公开(公告)号：US10652867B2
公开(公告)日：2020-05-12
申请号：US16156153
申请日：2018-10-10
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： June Chul Roh , Pierre Bertrand , Srinath Hosur , Vijay Pothukuchi , Mohamed Farouk Mansour
Abstract: A method for uplink (UL) wireless backhaul communication at a wireless backhaul remote unit in a radio access network comprising receiving a configuration for radio frames and a transmission schedule through a downlink (DL) physical layer broadcast channel, wherein the transmission schedule comprises a transmission allocation for the remote unit, generating a UL data frame, wherein generating the UL data frame comprises performing forward error correction (FEC) encoding on a data bit stream to generate a plurality of FEC codewords, wherein performing the FEC encoding comprises performing Reed Solomon (RS) encoding on the data bit stream to generate a plurality of RS codewords, performing byte interleaving on the RS codewords, and performing Turbo encoding on the byte interleaved RS codewords to generate one or more Turbo codewords, wherein each Turbo codeword is encoded from more than one RS codeword, and transmitting the UL data frame according to the transmission allocation.
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Patent Agency Ranking
公开(公告)号：US10312898B2
公开(公告)日：2019-06-04
申请号：US15206014
申请日：2016-07-08
Applicant: Texas Instruments Incorporated
Inventor： Ariel Dario Moctezuma , Srinath Hosur
IPC: H03K17/082 , H02H3/26 , H02H3/087 , H02H3/10
Abstract: In described examples, a switch has: a first current handling terminal coupled to a supply source terminal; and a second current handling terminal coupled to an output terminal. A comparator has: a first input coupled to the second current handling terminal; and a second input. A voltage reference source has: a first terminal coupled to the first current handling terminal; and a second terminal coupled to the second input of the comparator. A slew rate detector has an input coupled to the second current handling terminal. A switch controller has: a first input coupled to the comparator output; and a second input coupled to an output of the slew rate detector. The switch controller is coupled to output a signal to cause the switch to open when the comparator detects an over-current condition through the switch while the slew rate detector detects a negative slew rate.
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公开(公告)号：US20190044530A1
公开(公告)日：2019-02-07
申请号：US16152754
申请日：2018-10-05
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Corina Ioana Ionita , June Chul Roh , Mohamed F. Mansour , Srinath Hosur
CPC classification number: H03M5/18 , H03M13/13 , H03M13/152 , H03M13/251 , H03M13/255 , H04L1/0041 , H04L1/0058 , H04L25/4917 , H04L27/36 , H04L27/364
Abstract: A method includes receiving multiple bits to be transmitted. The method also includes applying a first binary alphabet polar code to a first subset of the multiple bits to generate first encoded bits. The first encoded bits are associated with a first bit level of a multilevel coding scheme. The method further includes generating one or more symbols using the first encoded bits and bits associated with a second bit level of the multilevel coding scheme. The first binary alphabet polar code is associated with a first coding rate. In addition, the method could include applying a second binary alphabet polar code to a second subset of the multiple bits to generate second encoded bits. The second encoded bits are associated with the second bit level. The second binary alphabet polar code is associated with a second coding rate such that the bit levels have substantially equal error rates.
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公开(公告)号：US20190037379A1
公开(公告)日：2019-01-31
申请号：US16039412
申请日：2018-07-19
Applicant: Texas Instruments Incorporated
Inventor： Anuj Batra , Timothy M. Schmidl , Srinath Hosur , June Chul Roh
Abstract: In at least some embodiments, a communication device includes a transceiver with a physical (PHY) layer. The PHY layer is configured for body area network (BAN) operations in a limited multipath environment based on a constant symbol rate for BAN packet transmissions and based on M-ary PSK, differential M-ary PSK or rotated differential M-ary PSK modulation. The PHY layer is configured to transmit and receive data in a frequency band selected from the group consisting of: 402-405 MHz, 420-450 MHz, 863-870 MHz, 902-928 MHz, 950-956 MHz, 2360-2400 MHz, and 2400-2483.5 MHz.
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公开(公告)号：US20180317245A1
公开(公告)日：2018-11-01
申请号：US16024039
申请日：2018-06-29
Applicant: Texas Instruments Incorporated
Inventor： Ariton E. Xhafa , Soon-Hyeok Choi , Srinath Hosur , Yanjun Sun
Abstract: A method for communicating in a wireless sensor network (WSN) is described. Using control logic, a first wireless transceiver is caused to transmit a wireless packet to a node in a wireless sensor network. The control logic bases its causing on a transmission coinciding with a break in transmission for a second wireless network, such that the transmission from the first wireless transceiver does not coincide with transmissions made on the second wireless network. Time synchronized channel hopping (TSCH) slot frames for wireless packet transmission in the wireless sensor network are caused to be time offset if the first wireless transceiver is utilizing TSCH. Wake up sequence transmissions for the wireless sensor network are caused to be time offset if the first wireless transceiver is utilizing coordinated sampled listening (CSL).
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公开(公告)号：US09872130B2
公开(公告)日：2018-01-16
申请号：US15298829
申请日：2016-10-20
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Anuj Batra , Timothy M. Schmidl , Srinath Hosur , June Chul Roh
CPC classification number: H04W4/80 , H04L27/18 , H04L27/20 , H04L27/2675 , H04L69/22 , H04W52/36 , H04W52/367 , H04W72/0453 , H04W74/0816
Abstract: In at least some embodiments, a communication device includes a transceiver with a physical (PHY) layer. The PHY layer is configured for body area network (BAN) operations in a limited multipath environment using M-ary PSK, differential M-ary PSK or rotated differential M-ary PSK. Also, the PHY layer uses a constant symbol rate for BAN packet transmissions.
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