公开(公告)号：US09510138B2

公开(公告)日：2016-11-29

申请号：US14709549

申请日：2015-05-12

Applicant: Texas Instruments Incorporated

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

IPC: H04W4/00 ,  H04L27/18 ,  H04L27/20 ,  H04L29/06 ,  H04L27/26

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。

公开(公告)号：US09438304B2

公开(公告)日：2016-09-06

申请号：US14825714

申请日：2015-08-13

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.

公开(公告)号：US09419835B2

公开(公告)日：2016-08-16

申请号：US14583875

申请日：2014-12-29

Applicant: Texas Instruments Incorporated

Inventor： Mostafa Sayed Ibrahim ,  Il Han Kim ,  Tarkesh Pande ,  Anuj Batra

IPC: H04B3/54 ,  H04L27/26 ,  H04B7/04 ,  H04W74/08 ,  H04L7/04

CPC classification number: H04L27/2656 ,  H04B3/54 ,  H04B3/542 ,  H04B3/546 ,  H04B7/0413 ,  H04L1/188 ,  H04L5/0023 ,  H04L7/042 ,  H04L27/26 ,  H04L27/2602 ,  H04L27/2613 ,  H04L27/2655 ,  H04L27/2663 ,  H04W74/0816

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.

Abstract translation: 一种PLC网络系统和方法，用于生成具有合适的前导码部分的MIMO帧的OFDM帧，其被配置为提供与传统PLC设备的向后兼容性，并且促进诸如帧检测和符号定时，信道估计和自动增益控制（AGC）的不同接收机任务，包括 在存在脉冲噪声和PLC网络的频率选择性通道的情况下进行鲁棒前同步码检测。 PLC设备可以包括延迟相关检测器和互相关检测器，其一起操作以便于在一个实现中进行前导码检测。

公开(公告)号：US20160127515A1

公开(公告)日：2016-05-05

申请号：US14836443

申请日：2015-08-26

Applicant: Texas Instruments Incorporated

Inventor： Wonsoo Kim ,  Mehul Soman ,  Anuj Batra

IPC: H04L29/06 ,  H04L12/24 ,  H04L29/08

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.

Abstract translation: 网络中的通信设备可以从网络接收帧流，其中每个帧包括一个或多个信标分组。 网络使用的通信协议可以通过跟踪信标分组序列中的预选字段来识别，其中预选字段以第一协议的第一已知方式以及第二协议的第二已知方式变化。 然后，通信设备可以使用所识别的通信协议加入到网络中以发送和接收数据。

公开(公告)号：US20160094373A1

公开(公告)日：2016-03-31

申请号：US14583875

申请日：2014-12-29

Applicant: Texas Instruments Incorporated

Inventor： Mostafa Sayed Ibrahim ,  Il Han Kim ,  Tarkesh Pande ,  Anuj Batra

IPC: H04L27/26 ,  H04L7/04 ,  H04B3/54

CPC classification number: H04L27/2656 ,  H04B3/54 ,  H04B3/542 ,  H04B3/546 ,  H04B7/0413 ,  H04L1/188 ,  H04L5/0023 ,  H04L7/042 ,  H04L27/26 ,  H04L27/2602 ,  H04L27/2613 ,  H04L27/2655 ,  H04L27/2663 ,  H04W74/0816

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.

Abstract translation: 一种PLC网络系统和方法，用于生成具有合适的前导码部分的MIMO帧的OFDM帧，其被配置为提供与传统PLC设备的向后兼容性，并且促进诸如帧检测和符号定时，信道估计和自动增益控制（AGC）的不同接收机任务，包括 在存在脉冲噪声和PLC网络的频率选择性通道的情况下进行鲁棒前同步码检测。 PLC设备可以包括延迟相关检测器和互相关检测器，其一起操作以便于在一个实现中进行前导码检测。

公开(公告)号：US09231732B2

公开(公告)日：2016-01-05

申请号：US14047021

申请日：2013-10-07

Applicant: Texas Instruments, Incorporated

Inventor： Yumin Zhang ,  Wenxun Qiu ,  Timothy Mark Schmidl ,  Anuj Batra

IPC: H03M13/00 ,  H04L1/00 ,  G06F11/07 ,  G06F11/14

CPC classification number: H04L1/0041 ,  G06F11/0709 ,  G06F11/1004 ,  G06F11/1402 ,  H03M13/09 ,  H04L1/0045 ,  H04L1/0053 ,  H04L1/0061 ,  H04L1/0072 ,  H04L1/0075 ,  H04L1/0079 ,  H04L1/0083 ,  H04L69/22

Abstract: A networking device includes a packet header protect generator, a transmitter, a receiver, a decoder and router. The transmitter transmits a data packet to the receiver. The data packet includes a data packet header. The packet header protection generator is arranged to toggle selected bits of a protected portion of the data packet header and generate a data integrity signature. The receiver receives the data packet and generates a received data integrity signature. The decoder computes a locally computed data integrity signature in response to the protected portion of the received data packet header. The locally computed data integrity signature is compared with the received data integrity signature. The router selects a portion of a routing path in response to whether a data packet forwarding destination includes a decoder arranged to compute a locally computed data integrity signature.

Abstract translation: 网络设备包括分组报头保护发生器，发射机，接收机，解码器和路由器。 发射机向接收机发送数据包。 数据分组包括数据分组报头。 分组报头保护发生器被布置为切换数据分组报头的受保护部分的所选位，并生成数据完整性签名。 接收器接收数据包并产生接收到的数据完整性签名。 解码器响应于接收到的数据分组报头的受保护部分来计算本地计算的数据完整性签名。 将本地计算的数据完整性签名与接收到的数据完整性签名进行比较。 响应于数据分组转发目的地是否包括被布置为计算本地计算的数据完整性签名的解码器，路由器选择路由路径的一部分。

公开(公告)号：US09100102B2

公开(公告)日：2015-08-04

申请号：US14052913

申请日：2013-10-14

Applicant: Texas Instruments Incorporated

Inventor： Il Han Kim ,  Tarkesh Pande ,  Anuj Batra

IPC: H04B3/00 ,  H04B3/54

CPC classification number: H04B3/542 ,  H04B2203/5433 ,  H04B2203/5466

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.

Abstract translation: 实施例包括使用带扩展的前置码的电力线通信的方法。 一种方法可以包括接收分组数据单元PDU。 位层重复被应用于PDU的至少一部分以产生重复的部分。 每个子信道执行交织。 引导音被插入交错部分。 每个数据音调相对于插入的导频音中最接近的一个进行调制。 PDU通过电力线传输。

公开(公告)号：US20150071364A1

公开(公告)日：2015-03-12

申请号：US14458662

申请日：2014-08-13

Applicant: Texas Instruments Incorporated

Inventor： Anuj Batra ,  Tarkesh Pande ,  IL Han Kim ,  Robert Weibo Liang ,  Mehul Madhav Soman

IPC: H04B3/54 ,  H04L12/931

CPC classification number: H04B3/542 ,  H04B2203/5408

Abstract: In a method for transmitting frames of data across a physical media that has a selective frequency response, a packet of data bytes is received by a media access (MAC) layer of a communication protocol from a local application for transmission to a remote receiver. The packet of data bytes is padded to from a padded packet of data bytes having a predetermined frame length, wherein the predetermined frame length is a frame length that is predetermined to provide correct transmission of a frame of data across the physical media that has a selective frequency response. The padded packet of data bytes is encoded by a physical (PHY) layer of the communication protocol to form multiple tone symbols. The multi-tone symbols are then transmitted on the physical media to the remote receiver.

Abstract translation: 在用于在具有选择性频率响应的物理介质上发送数据帧的方法中，数据字节分组由来自本地应用的通信协议的媒体接入（MAC）层接收以传输到远程接收机。 从具有预定帧长度的填充数据字节分组中填充数据字节分组，其中预定帧长度是预定的帧长度，以提供整个物理帧的数据的正确传输，该物理帧具有选择性 频率响应。 填充的数据字节分组由通信协议的物理（PHY）层编码以形成多个音调符号。 然后，多音调符号在物理介质上传输到远程接收器。

公开(公告)号：US20150071306A1

公开(公告)日：2015-03-12

申请号：US14450046

申请日：2014-08-01

Applicant: Texas Instruments Incorporated

Inventor： Jing Lin ,  Tarkesh Pande ,  II Han Kim ,  Anuj Batra

IPC: H04L12/911

CPC classification number: H04L47/826 ,  H04B3/542 ,  H04B2203/5408 ,  H04B2203/5425 ,  H04K1/04 ,  H04K1/06 ,  H04L1/0071 ,  H04L5/0007 ,  H04L27/2627 ,  H04L27/3472 ,  H04L27/366

Abstract: A method of encoding a set of L bits for transmission on a transmission band through a transmission medium is provided, wherein L is a positive integer that is greater than 1. The method includes: mapping, via a mapping component, the L bits into M symbols; dividing, via a first dividing component, the transmission band into sub-bands; allocating, via an allocating component, the M symbols to individual sub-bands, respectively, for transmission at a first time; and allocating, via the allocating component, the M symbols to different individual sub-bands, respectively, for transmission at a second time.

Abstract translation: 提供一种通过传输介质对传输带上的一组L比特进行编码的方法，其中L是大于1的正整数。该方法包括：经由映射分量将L比特映射成M 符号; 经由第一分割部件将传输频带划分成子带; 分别经由分配组件将M个符号分配给各个子带，以便在第一时间进行传输; 并且经由分配组件分别将M个符号分配给不同的各个子带，以便在第二时间进行传输。

公开(公告)号：US20150043596A1

公开(公告)日：2015-02-12

申请号：US14449981

申请日：2014-08-01

Applicant: Texas Instruments Incorporated

Inventor： Jing Lin ,  Tarkesh Pande ,  Il Han Kim ,  Anuj Batra

IPC: H04L5/00 ,  H04L27/36 ,  H04B3/54 ,  H04L27/20

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: mapping, via a mapping component, the first bit and the second bit into a first symbol; mapping, via the mapping component, the first bit and the second bit into a second symbol; dividing, via a dividing component, the transmission band into subcarriers; allocating, via an allocating component, the first symbol to a first subcarrier of the subcarriers, allocating, via the allocating component, the second symbol to a second subcarrier of the subcarriers; and differentially encoding, via a differential encoder, the first symbol and the second symbol.

Abstract translation: 提供了一种在传输频带上对第一位和第二位进行编码以进行传输的方法。 该方法包括：经由映射组件将第一位和第二位映射成第一符号; 经由所述映射组件将所述第一位和所述第二位映射到第二符号中; 通过划分成分将传输频带划分成子载波; 经由分配组件将所述第一符号分配给所述子载波的第一子载波，经由所述分配组件将所述第二符号分配给所述子载波的第二子载波; 以及经由差分编码器对第一符号和第二符号进行差分编码。