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公开(公告)号：US09510139B2
公开(公告)日：2016-11-29
申请号：US14824705
申请日：2015-08-12
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.
Abstract translation: 在至少一些实施例中，通信设备包括具有物理（PHY）层的收发器。 PHY层被配置为使用M-ary PSK，差分M-ary PSK或旋转差分M-ary PSK的有限多径环境中的身体局域网（BAN）操作。 此外，PHY层对于BAN分组传输使用恒定的符号率。
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公开(公告)号：US09467164B2
公开(公告)日：2016-10-11
申请号：US14503513
申请日：2014-10-01
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 , H03M13/2792 , H04L1/0041 , H04L1/0058 , H04L25/4917 , H04L27/36 , H04L27/364
Abstract: A method includes simulating transmission of multiple symbols representing multiple bits over at least one communication channel, where the multiple symbols are associated with a polar code. The method also includes identifying error rates of equivalent bit channels associated with the simulated transmission of the symbols. The method further includes selecting a specified number of the bits as frozen bits in the polar code using the identified error rates. Simulating the transmission of the symbols could include computing log likelihood ratio (LLR) values associated with the equivalent bit channels and simulating polar decoding of received symbols using the LLR values. Identifying the error rates could include calculating means and variances of the LLR values associated with the equivalent bit channels and identifying probability density functions of the LLR values using the means and variances. The selected bits could represent the specified number of bits identified as having worst error rates.
Abstract translation: 一种方法包括模拟通过至少一个通信信道表示多个比特的多个符号的传输，其中多个符号与极性码相关联。 该方法还包括识别与符号的模拟传输相关联的等效比特信道的错误率。 该方法还包括使用所识别的错误率在极性码中选择指定数目的比特作为冻结比特。 模拟符号的传输可以包括与等效比特信道相关联的计算对数似然比（LLR）值，并且使用LLR值来模拟接收符号的极性解码。 识别错误率可以包括与等效位信道相关联的LLR值的计算方法和方差，并使用均值和方差来识别LLR值的概率密度函数。 所选择的比特可以表示指定的具有最差错误率的比特数。
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公开(公告)号：US09419750B2
公开(公告)日：2016-08-16
申请号：US14297164
申请日：2014-06-05
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： June Chul Roh , Pierre Bertrand , Srinath Hosur , Vijay Pothukuchi , Mohamed Farouk Mansour
CPC classification number: H04W72/0413 , H03M13/1515 , H03M13/2966 , H03M13/611 , H03M13/618 , H03M13/635 , H04H20/38 , H04L1/0041 , H04L1/0057 , H04L1/0061 , H04L1/0064 , H04L1/0071 , H04L1/0076 , H04L1/1812 , H04W72/0446
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.
Abstract translation: 一种在无线接入网络中的无线回程远程单元处的上行链路（UL）无线回程通信的方法，包括通过下行链路（DL）物理层广播信道接收无线电帧的配置和传输调度，其中所述传输调度包括传输 生成UL数据帧的UL数据帧的生成包括对数据比特流执行前向纠错（FEC）编码以生成多个FEC码字，其中执行FEC编码包括执行Reed Solomon（ RS）编码以产生多个RS码字，在RS码字上执行字节交织，并对字节交织的RS码字执行Turbo编码，以生成一个或多个Turbo码字，其中每个Turbo码字从更多的编码 而不是一个RS码字，并且根据传输分配来发送UL数据帧。
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公开(公告)号：US20160182092A1
公开(公告)日：2016-06-23
申请号：US14580622
申请日：2014-12-23
Applicant: Texas Instruments Incorporated
Inventor： Mohamed Farouk Mansour , June Chul Roh , Srinath Hosur
IPC: H03M13/29
CPC classification number: H03M13/2957 , H03M13/09 , H03M13/1515 , H03M13/27 , H03M13/2966 , H03M13/618
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.
Abstract translation: 公开了一种用于为回程应用提供错误控制编码的系统和方法。 首先使用Reed-Solomon（RS）编码对数据进行编码。 然后，输出RS块被turbo编码。 选择输出RS块的大小以匹配turbo编码器的输入。 来自RS块的比特可以被交织以产生输入turbo块。 循环冗余校验（CRC）奇偶校验位可以在RS编码之前添加到数据中。
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公开(公告)号：US20130343366A1
公开(公告)日：2013-12-26
申请号：US13917435
申请日：2013-06-13
Applicant: Texas Instruments Incorporated
Inventor： Anuj Batra , Timothy M. Schmidl , Srinath Hosur , June C. Roh
IPC: H04W4/00
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 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.
Abstract translation: 在至少一些实施例中，通信设备包括具有物理（PHY）层的收发器。 基于用于BAN分组传输的恒定符号速率并且基于M-ary PSK，差分M-ary PSK或旋转差分M-ary PSK调制，PHY层被配置用于在有限多径环境中的体区域网络（BAN）操作。 PHY层被配置为从选自以下的频带发送和接收数据：402-405MHz，420-450MHz，863-870MHz，902-928MHz，950-956MHz，2360-2400MHz ，和2400-2483.5MHz。
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Patent Agency Ranking
16.发明申请公开(公告)号：US20130290765A1
公开(公告)日：2013-10-31
申请号：US13862620
申请日：2013-04-15
Applicant: Texas Instruments Incorporated
Inventor： Deric W. Waters , Srinath Hosur , Anand G. Dabak
IPC: G06F1/26
Abstract: A method and apparatus are provided. The VBUS conductor is checked to determine whether the voltage on the VBUS conductor is greater than a vSafe0V voltage within a dead battery detect time interval, and the device policy manager is instructed to apply a vSafeDB voltage to the VBUS conductor if the voltage on the VBUS conductor is greater than the vSafe0V voltage. The policy engine waits for a bit stream to be detected within a bit stream detect timer interval. If the bit stream is not detected within the bit stream detect timer interval, then the device policy manager is instructed to apply the vSafe0V voltage to the VBUS conductor. The device policy manager is instructed to apply a vSafe5V voltage to the VBUS conductor if the bit stream is detected, and the policy engine waits for the bit stream to stop within a device ready timer interval. If the bit stream has stopped within the device ready timer interval, then the policy engine sends capabilities as a source port.
Abstract translation: 提供了一种方法和装置。 检查VBUS导体以确定VBUS导体中的电压是否大于电池电池检测时间间隔内的vSafe0V电压，并且指示设备策略管理器向VBUS导体施加vSafeDB电压，如果VBUS上的电压 导体大于vSafe0V电压。 策略引擎等待在位流检测定时器间隔内检测到位流。 如果在比特流检测定时器间隔内没有检测到位流，则指示设备策略管理器将vSafe0V电压施加到VBUS导体。 如果检测到比特流，则指示设备策略管理器将vSafe5V电压应用于VBUS导体，并且策略引擎在设备就绪定时器间隔内等待比特流停止。 如果位流在设备就绪定时器间隔内停止，则策略引擎将功能作为源端口发送。
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公开(公告)号：US20230300745A1
公开(公告)日：2023-09-21
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：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：US11375429B2
公开(公告)日：2022-06-28
申请号：US15632858
申请日：2017-06-26
Applicant: Texas Instruments Incorporated
Inventor： Nirmal Chindhu Warke , Srinath Hosur , Martin J. Izzard , Siraj Akhtar , Baher S. Haroun , Marco Corsi
IPC: H04W40/06 , H04W40/00 , H01Q3/26 , H01Q21/00 , H04L49/00 , H04L49/40 , H04B17/336 , H01Q9/20 , H04B7/06 , H04L45/74 , H04W40/12
Abstract: Embodiments of the invention provide a system and method for chip to chip communications in electronic circuits. In one embodiment, a networking device includes an input port circuit having a transmitter circuit coupled one or more transmitter antennas, wherein the input port circuit transmits a data packet to a first output port circuit using millimeter wave signals. The networking device includes output port circuits including at least the first output port circuit, each of the output port circuits having a receiver circuit coupled to one or more receiver antennas. The networking device includes a beamforming circuit coupled to the one or more transmitter antennas of the input port circuit, wherein the beamforming circuit causes the one or more transmitter antennas to transmit an antenna beam directed at the one or more receiver antennas of the first output port circuit.
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公开(公告)号：US20210307001A1
公开(公告)日：2021-09-30
申请号：US17135393
申请日：2020-12-28
Applicant: Texas Instruments Incorporated
Inventor： June Chul Roh , Pierre Bertrand , Srinath Hosur , Vijay Pothukuchi , Mohamed Farouk Mansour
Abstract: A method for communicating over a wireless backhaul channel comprising generating a radio frame comprising a plurality of time slots, wherein each time slot comprises a plurality of symbols in time and a plurality of sub-carriers in a system bandwidth, broadcasting a broadcast channel signal comprising a transmission schedule to a plurality of remote units in a number of consecutive sub-carriers centered about a direct current (DC) sub-carrier in at least one of the time slots in the radio frame regardless of the system bandwidth, and transmitting a downlink (DL) control channel signal and a DL data channel signal to a first of the remote units, wherein the DL data channel signal is transmitted by employing a single carrier block transmission scheme comprising a Discrete Fourier Transform (DFT) spreading for frequency diversity.
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