公开(公告)号：US09154350B2

公开(公告)日：2015-10-06

申请号：US14061429

申请日：2013-10-23

Applicant: Texas Instruments Incorporated

Inventor： Anuj Batra ,  Timothy M. Schmidl ,  Srinath Hosur ,  June C. Roh

IPC: H04B7/00 ,  H04L27/20 ,  H04L27/18 ,  H04W4/00 ,  H04L29/06

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。

公开(公告)号：US09143187B2

公开(公告)日：2015-09-22

申请号：US14264708

申请日：2014-04-29

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： June Chul Roh ,  Anuj Batra ,  Sudipto Chakraborty ,  Srinath Hosur

IPC: H04B1/00 ,  H04B1/69 ,  H04B1/7176

CPC classification number: H04B1/69 ,  H04B1/7176 ,  H04B2001/6908

Abstract: A symbol modulation system applicable to a body area network is disclosed herein. The symbol modulation system includes a symbol mapper. The symbol mapper is configured to determine a time within a predetermined symbol transmission interval at which a transmission representative of the symbol will occur. The time is determined based on a value of a symbol and a value of a time-hopping sequence. The time is selected from a plurality of symbol value based time slots, and a plurality of time-hopping sequence sub-time-slots within each symbol value based time slot. The symbol mapper is configured to generate a single guard interval within the symbol transmission interval. The single guard interval is positioned to terminate the symbol transmission interval.

Abstract translation: 本文公开了适用于体区网络的符号调制系统。 符号调制系统包括符号映射器。 符号映射器被配置为确定符号的传输代表将发生的预定符号传输间隔内的时间。 该时间基于符号的值和跳时序列的值来确定。 该时间是从基于多个符号值的时隙中选出的，以及在每个基于符号值的时隙内的多个跳时序列子时隙。 符号映射器被配置为在符号传输间隔内产生单个保护间隔。 单个保护间隔定位成终止符号传输间隔。

公开(公告)号：US09083571B2

公开(公告)日：2015-07-14

申请号：US14145471

申请日：2013-12-31

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Reza Hoshyar ,  Anuj Batra ,  Timothy Mark Schmidl

IPC: H04B1/10 ,  H04L25/02 ,  H04L27/26

CPC classification number: H04L25/0202 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/022 ,  H04L25/023 ,  H04L27/26 ,  H04L27/2601

Abstract: A device for updating complex channel gain estimates for orthogonal frequency division multiplexed (OFDM) symbols that includes a receiver to receive a plurality of OFDM symbols, wherein each OFDM symbol includes a plurality of pilot tones at a subset of odd positions and a finite impulse response (FIR) filter. The FIR filter configured to filter a plurality of initial channel estimates of odd tones of an OFDM symbol using a first set of coefficients to generate an updated estimate of the channel estimates of the plurality of odd tones for that OFDM symbol, and filter the plurality of the initial channel estimates of the odd tones of the OFDM symbol using a second set of coefficients to generate estimates for a plurality of initial channel estimates of even tones for that OFDM symbol.

Abstract translation: 一种用于更新用于正交频分复用（OFDM）符号的复信道增益估计的装置，其包括用于接收多个OFDM符号的接收机，其中每个OFDM符号包括在奇数位置的子集处的多个导频音调和有限脉冲响应 （FIR）滤波器。 FIR滤波器被配置为使用第一组系数来过滤OFDM符号的奇数音调的多个初始信道估计，以生成用于该OFDM符号的多个奇音调的信道估计的更新估计，并且对多个 使用第二组系数的OFDM符号的奇数音调的初始信道估计来生成用于该OFDM符号的偶数个音调的多个初始信道估计的估计。

公开(公告)号：US08966346B2

公开(公告)日：2015-02-24

申请号：US14073128

申请日：2013-11-06

Applicant: Texas Instruments Incorporated

Inventor： June Chul Roh ,  Anuj Batra ,  Srinath Hosur

IPC: H03M13/00 ,  H04L29/06 ,  H03M13/15 ,  H04L1/00 ,  H04L12/26 ,  H04L1/18

CPC classification number: H04L69/22 ,  H03M13/152 ,  H03M13/155 ,  H04L1/0057 ,  H04L1/0079 ,  H04L1/1812 ,  H04L43/0823

Abstract: Apparatus and method for processing a physical layer protocol convergence (PLCP) header. In one embodiment, a wireless device includes a PLCP header processor. The PLCP header processor is configured to: process a physical layer header, process a check value based on the physical layer header, and process an error correction code based on the physical layer header and the check value. A concatenation of the physical layer header, check value, and error correction code the PLCP header processor is configured to process consists of a number of information bits that is an integer multiple of a number of information bits per symbol used to encode the PLCP header.

Abstract translation: 用于处理物理层协议收敛（PLCP）报头的装置和方法。 在一个实施例中，无线设备包括PLCP头处理器。 PLCP头处理器被配置为：处理物理层报头，基于物理层报头处理检查值，并且基于物理层报头和检查值处理纠错码。 配置为处理的PLCP头处理器的物理层报头，检查值和纠错码的级联由多个信息位组成，每个信息位是用于编码PLCP报头的每个符号的信息位数的整数倍。

公开(公告)号：US20140112330A1

公开(公告)日：2014-04-24

申请号：US14025628

申请日：2013-09-12

Applicant: Texas Instruments Incorporated

Inventor： Timothy M. Schmidl ,  Anuj Batra ,  Srinath Hosur

IPC: H04W56/00 ,  H04W4/00

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.

Abstract translation: 一种方法包括接收包括复数部分的第一多个符号。 该方法还包括将共轭对称性应用于第一多个符号，产生不包含复杂部分的第二多个符号。 该方法还包括使用快速傅里叶反变换来变换第二多个符号，产生第三个多个符号。 该方法还包括内插第三多个符号，产生包括第三多个符号的至少一个实部的短训练场，产生包括第三多个符号的至少一个实部的长训练场，并发送 短期培训领域和长期培训领域的WPAN。

公开(公告)号：US20140064336A1

公开(公告)日：2014-03-06

申请号：US14074448

申请日：2013-11-07

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： June Chul Roh ,  Anuj Batra ,  Sudipto Chakraborty ,  Srinath Hosur

IPC: H04B1/69

CPC classification number: H04B1/69 ,  H04B1/7176 ,  H04B2001/6908

Abstract: A symbol modulation system applicable to a body area network is disclosed herein. The symbol modulation system includes a symbol mapper. The symbol mapper is configured to determine a time within a predetermined symbol transmission interval at which a transmission representative of the symbol will occur. The time is determined based on a value of a symbol and a value of a time-hopping sequence. The time is selected from a plurality of symbol value based time slots, and a plurality of time-hopping sequence sub-time-slots within each symbol value based time slot. The symbol mapper is configured to generate a single guard interval within the symbol transmission interval. The single guard interval is positioned to terminate the symbol transmission interval.

公开(公告)号：US20140064262A1

公开(公告)日：2014-03-06

申请号：US14073128

申请日：2013-11-06

Applicant: Texas Instruments Incorporated

Inventor： June Chul Roh ,  Anuj Batra ,  Srinath Hosur

IPC: H04L29/06 ,  H04L12/26

CPC classification number: H04L69/22 ,  H03M13/152 ,  H03M13/155 ,  H04L1/0057 ,  H04L1/0079 ,  H04L1/1812 ,  H04L43/0823

Abstract: Apparatus and method for processing a physical layer protocol convergence (PLCP) header. In one embodiment, a wireless device includes a PLCP header processor. The PLCP header processor is configured to: process a physical layer header, process a check value based on the physical layer header, and process an error correction code based on the physical layer header and the check value. A concatenation of the physical layer header, check value, and error correction code the PLCP header processor is configured to process consists of a number of information bits that is an integer multiple of a number of information bits per symbol used to encode the PLCP header.

Abstract translation: 用于处理物理层协议收敛（PLCP）报头的装置和方法。 在一个实施例中，无线设备包括PLCP头处理器。 PLCP头处理器被配置为：处理物理层报头，基于物理层报头处理检查值，并且基于物理层报头和检查值处理纠错码。 配置为处理的PLCP头处理器的物理层报头，检查值和纠错码的级联由多个信息位组成，每个信息位是用于编码PLCP报头的每个符号的信息位数的整数倍。

公开(公告)号：US20140036877A1

公开(公告)日：2014-02-06

申请号：US13951839

申请日：2013-07-26

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Bradford James Campbell ,  Ariton E. Xhafa ,  Anuj Batra

IPC: H04W72/10

CPC classification number: H04W72/10 ,  Y02D70/144 ,  Y02D70/22

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.

Abstract translation: 一种用于优化无线传感器网络中能量采集节点的功耗的系统和方法。 在一个实施例中，系统包括网络协调器。 网络协调器包括无线收发器和控制器。 无线收发器被配置为提供对无线传感器网络的访问。 控制器被配置为确定与网络协调器无线通信的无线设备是否通过能量收集来供电。 控制器还被配置为基于通过能量收集来确定无线设备被供电的调度，无线设备通过无线传感器网络的超帧的优先级时隙经由无线传感器网络进行通信。 优先级时隙是在超帧的初始部分中发生的时隙。

公开(公告)号：US12261654B2

公开(公告)日：2025-03-25

申请号：US18470659

申请日：2023-09-20

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.

公开(公告)号：US20250016816A1

公开(公告)日：2025-01-09

申请号：US18897373

申请日：2024-09-26

Applicant: Texas Instruments Incorporated

Inventor： Bradford James Campbell ,  Ariton E. Xhafa ,  Anuj Batra

IPC: H04W72/56

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.