公开(公告)号：US20210028817A1

公开(公告)日：2021-01-28

申请号：US17035891

申请日：2020-09-29

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Ariton E. Xhafa ,  Xiaolin Lu ,  Janwei Zhou ,  Il Han Kim

IPC: H04B1/7156 ,  H04L9/06 ,  H04L29/06 ,  H04W12/00 ,  H04W12/04

Abstract: A network includes a first wireless node that communicates over a wireless network connection. The first wireless node includes a first encryption engine that processes a first initialization data set and a current transmit sequence associated with a current communication to generate a next transmit sequence that is employed to communicate with a second wireless node that derives a next received sequence that corresponds to the next transmit sequence to process a subsequent communication.

公开(公告)号：US10334087B2

公开(公告)日：2019-06-25

申请号：US15894250

申请日：2018-02-12

Applicant: Texas Instruments Incorporated

Inventor： Gang Xu ,  Ramanuja Vedantham ,  Kumaran Vijayasankar ,  Anand G Dabak ,  Tarkesh Pande ,  Il Han Kim ,  Xiaolin Lu

IPC: H04L29/06 ,  H04B3/54

Abstract: In a disclosed embodiment, a method for communication in a network includes receiving, at a first device registered to the network, a physical layer (PHY) frame that includes a PHY header and a MAC header. The PHY frame may further include a MAC payload. The PHY header includes a destination address field. The method further includes comparing a network address of the first device to the destination address field to determine whether the destination address field stores a value having the same number of bits as the network address. When the comparison indicates that the value stored by the destination address field does not have the same number of bits as the network address, the method skips decoding the MAC header and the MAC payload.

公开(公告)号：US20190097679A1

公开(公告)日：2019-03-28

申请号：US16137456

申请日：2018-09-20

Applicant: Texas Instruments Incorporated

Inventor： Jyotirmoy Banik ,  Il Han Kim ,  Jianwei Zhou ,  Xiaolin Lu

IPC: H04B1/7143

Abstract: A method of generating a channel hopping sequence for a link in a wireless sensor network is provided that includes receiving performance quality data for respective frequency channels of a plurality of frequency channels in the link in a monitoring system, determining a channel quality indicator (CQI) by the monitoring system for each frequency channel based on the respective performance quality data, and determining a repetition factor by the monitoring system for each frequency channel based on the respective CQI, wherein a repetition factor for a frequency channel indicates a number of times the frequency channel is repeated in the channel hopping sequence.

公开(公告)号：US10200171B2

公开(公告)日：2019-02-05

申请号：US15651132

申请日：2017-07-17

Applicant: Texas Instruments Incorporated

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

IPC: H04W72/12 ,  H04W28/04 ,  H04L27/20 ,  H04L5/00 ,  H04L27/36 ,  H04B3/54

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.

公开(公告)号：US10103779B2

公开(公告)日：2018-10-16

申请号：US13644585

申请日：2012-10-04

Applicant: Texas Instruments Incorporated

Inventor： Il Han Kim ,  Anand G. Dabak ,  Tarkesh Pande

IPC: H04L27/10 ,  H04L27/18 ,  H04B3/54

Abstract: In a powerline communications (PLC) network having a first node and at least a second node on a PLC channel utilizing a band including a plurality of tones, based on at least one channel quality indicator (CQI), the first node allocates for a tone map response payload only a single (1) power control bit for each of a plurality of subbands having two or more tones. The power control bit indicates a first power state or a second power state. The first node transmits a frame including the tone map response payload to the second node. The second node transmits a frame having boosted signal power for the tones in the subbands which have the first power state compared to a lower signal power for the tones in the subbands which have the second power state.

公开(公告)号：US09596325B2

公开(公告)日：2017-03-14

申请号：US14556373

申请日：2014-12-01

Applicant: Texas Instruments Incorporated

Inventor： Gang Xu ,  Ramanuja Vedantham ,  Kumaran Vijayasankar ,  Anand G. Dabak ,  Tarkesh Pande ,  Il Han Kim ,  Xiaolin Lu

IPC: H04J3/24 ,  H04L29/06 ,  H04B3/54

CPC classification number: H04L69/22 ,  H04B3/54 ,  H04B3/542 ,  H04B2203/5408

Abstract: A physical layer (PHY) data frame for use in conjunction with processor in a node, processor coupled to a program memory for storing a sequence of operating instructions. The frame has a preamble, PHY header, a MAC header and a MAC payload. The PHY header includes a destination address field having a destination address therein. The destination address is used by the processor to determine match with the node address.

Abstract translation: 与节点中的处理器结合使用的物理层（PHY）数据帧，耦合到程序存储器的处理器，用于存储操作指令序列。 帧具有前同步码，PHY报头，MAC报头和MAC有效载荷。 PHY标头包括其中具有目的地地址的目的地地址字段。 处理器使用目的地地址来确定与节点地址的匹配。

公开(公告)号：US09537533B2

公开(公告)日：2017-01-03

申请号：US14056755

申请日：2013-10-17

Applicant: Texas Instruments Incorporated

Inventor： Anuj Batra ,  Tarkesh Pande ,  Il Han Kim

IPC: H04B3/54 ,  H04L27/233 ,  H04L27/26

CPC classification number: H04B3/542 ,  H04L27/2331 ,  H04L27/2613

Abstract: Embodiments of the invention provide a method for discriminating between two types of encoding schemes for the frame control header (FCH) used in G3-type narrow band OFDM communications. The two modes for encoding are Differential with respect to the previous Symbol (DS) and Differential with respect to the Preamble (DP). This mode is sometimes referred to as “coherent” mode.

Abstract translation: 本发明的实施例提供了一种用于鉴别在G3型窄带OFDM通信中使用的帧控制报头（FCH）的两种类型的编码方案的方法。 编码的两种模式相对于先前的符号（DS）和差分相对于前导码（DP）是差分的。 这种模式有时被称为“相干”模式。

公开(公告)号：US09264103B2

公开(公告)日：2016-02-16

申请号：US14010267

申请日：2013-08-26

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Kamaran Vijayasankar ,  Ramanuja Vedantham ,  Il Han Kim

IPC: H04B3/54

CPC classification number: H04B3/54 ,  H04B3/46 ,  H04B3/542 ,  H04B2203/5495

Abstract: Apparatus (and related methods) for a power line communication network include a processor configured to receive beacons over a communication interface. The processor determines a link quality indicator (LQI) for each received beacon and ignores the beacons for at most a predetermined maximum number of beacon receptions when each LQI is below a threshold. The processor responds to a received beacon if the LQI for such received beacon exceeds the threshold or if a predetermined maximum number of beacons have been received with LQIs below the threshold.

公开(公告)号：US09219526B2

公开(公告)日：2015-12-22

申请号：US14630990

申请日：2015-02-25

Applicant: Texas Instruments Incorporated

Inventor： Shu Du ,  Anand G. Dabak ,  Xiaolin Lu ,  Il Han Kim

IPC: H04B3/54 ,  H04L12/10 ,  H04L12/26 ,  H04L7/00

CPC classification number: H04B3/54 ,  H04B3/544 ,  H04B2203/5408 ,  H04B2203/5466 ,  H04B2203/5495 ,  H04L7/00 ,  H04L12/10 ,  H04L43/0823

Abstract: Systems for channel selection in power line communications (PLC) are described. In some embodiments, a PLC device may include a processor and a memory. The memory stores instructions executable by the processor to cause the PLC device perform operations. One or more time slots in each of a plurality of frequency bands are sequentially scanned. A packet transmitted by a second PLC device to the PLC device over one of the plurality of frequency bands is detected. Additional packets received from the second PLC device are synchronized across the plurality of frequency bands based, at least in part, upon the detected packet. The additional packets are organized in a plurality of frames. Each of the plurality of frames having been transmitted by the second PLC device to the PLC device over a respective one of the plurality of frequency bands. Each frame has a plurality of time slots, and each time slot has a pair of beacon and bandscan packets.

Abstract translation: 描述了电力线通信（PLC）中通道选择的系统。 在一些实施例中，PLC设备可以包括处理器和存储器。 存储器存储可由处理器执行以使PLC设备执行操作的指令。 顺序地扫描多个频带中的每一个中的一个或多个时隙。 检测由第二PLC设备通过多个频带中的一个发送到PLC设备的分组。 至少部分地基于检测到的分组，从第二PLC设备接收的附加分组跨多个频带同步。 附加分组被组织成多个帧。 多个帧中的每一个已经由第二PLC设备通过多个频带中的相应一个发送到PLC设备。 每个帧具有多个时隙，并且每个时隙具有一对信标和带扫描分组。

公开(公告)号：US09184967B1

公开(公告)日：2015-11-10

申请号：US14582775

申请日：2014-12-24

Applicant: Texas Instruments Incorporated

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

IPC: H04B3/00 ,  H04L27/26 ,  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.

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。