公开(公告)号：US09194707B2

公开(公告)日：2015-11-24

申请号：US14079870

申请日：2013-11-14

Applicant: Texas Instruments Incorporated

Inventor： Deric W Waters ,  Tarkesh Pande

IPC: G01C21/10 ,  G01C21/16 ,  G01C19/04

CPC classification number: G01C21/16 ,  G01C19/04 ,  Y10T74/1229

Abstract: A method comprises computing a metric based on the accelerometer signal to remove an acceleration due to gravity. A bandwidth of a gyroscope filter is set based on the accelerometer signal and the computed metric. The gyroscope filter uses a low-pass filter to filter a signal from the gyroscope.

Abstract translation: 一种方法包括基于加速度计信号来计算度量以消除由于重力引起的加速度。 基于加速度计信号和计算出的度量来设置陀螺仪滤波器的带宽。 陀螺仪滤波器使用低通滤波器对陀螺仪的信号进行滤波。

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。

公开(公告)号：US20150180539A1

公开(公告)日：2015-06-25

申请号：US14576334

申请日：2014-12-19

Applicant: Texas Instruments Incorporated

Inventor： Ramanuja Vedantham ,  Anand Dabak ,  Tarkesh Pande

IPC: H04B3/54

CPC classification number: H04B3/54 ,  H04B3/546 ,  H04B2203/5408 ,  H04B2203/5433 ,  H04B2203/5445 ,  H04L5/14

Abstract: Systems and methods for enabling co-existence among power line communications (PLC) technologies are described. In some embodiments, a method performed by a PLC device, such as a PLC gateway, may include detecting a communication from foreign PLC device on a PLC network in response to a foreign preamble received by the PLC device, terminating transmissions to the PLC network for a network-specific co-existence Extended Interframe Space (cEIFS) time period in response to the foreign preamble, and resuming transmissions to the PLC network after expiration of the network-specific time period.

Abstract translation: 描述了实现电力线通信（PLC）技术共存的系统和方法。 在一些实施例中，由诸如PLC网关的PLC设备执行的方法可以包括响应于由PLC设备接收到的外部前置码来检测来自PLC网络上的外部PLC设备的通信，终止到PLC网络的传输，以便 响应于外部前导码的特定于网络的共存扩展帧间间隔（cEIFS）时间段，以及在网络特定时间段结束之后恢复到PLC网络的传输。

公开(公告)号：US09001844B2

公开(公告)日：2015-04-07

申请号：US13848056

申请日：2013-03-20

Applicant: Texas Instruments Incorporated

Inventor： Kumaran Vijayasankar ,  Ramanuja Vedantham ,  Tarkesh Pande

IPC: H04L12/413 ,  H04J3/02 ,  H04L12/927 ,  H04L12/40 ,  H04B3/54 ,  H04L12/28

CPC classification number: H04L12/413 ,  H04B3/542 ,  H04B2203/5433 ,  H04L12/283 ,  H04L12/40156 ,  H04L47/805 ,  H04L2012/2843

Abstract: Embodiments of methods and systems for overlapping priority contention windows in G3-PLC networks are presented. In one embodiment, a Normal Priority Contention Window (NPCW) is allowed to overlap with a High Priority Contention Window (HPCW). The minimum contention window for the normal priority frames (i.e., NPCW) is equal to or longer than the contention window for high priority frames (i.e., HPCW). By making the NPCW longer than the HPCW, the high priority frames will have a better chance than normal priority frames to get access to the channel on transmission reattempts.

Abstract translation: 介绍了在G3-PLC网络中重叠优先竞争窗口的方法和系统的实施例。 在一个实施例中，允许正常优先权竞争窗口（NPCW）与高优先权争用窗口（HPCW）重叠。 正常优先级帧（即NPCW）的最小竞争窗口等于或大于高优先级帧（即HPCW）的争用窗口。 通过使NPCW比HPCW长，高优先级帧将比正常优先级帧更有可能在传输重新尝试时访问该信道。

公开(公告)号：US08948274B2

公开(公告)日：2015-02-03

申请号：US13659870

申请日：2012-10-24

Applicant: Texas Instruments Incorporated

Inventor： Ramanuja Vedantham ,  Anand Dabak ,  Tarkesh Pande

IPC: H04B3/00 ,  H04B3/54

CPC classification number: H04B3/54 ,  H04B3/546 ,  H04B2203/5408 ,  H04B2203/5433 ,  H04B2203/5445 ,  H04L5/14

Abstract: Systems and methods for enabling co-existence among power line communications (PLC) technologies are described. In some embodiments, a method performed by a PLC device, such as a PLC gateway, may include detecting a communication from foreign PLC device on a PLC network in response to a foreign preamble received by the PLC device, terminating transmissions to the PLC network for a network-specific co-existence Extended Interframe Space (cEIFS) time period in response to the foreign preamble, and resuming transmissions to the PLC network after expiration of the network-specific time period.

Abstract translation: 描述了实现电力线通信（PLC）技术共存的系统和方法。 在一些实施例中，由诸如PLC网关的PLC设备执行的方法可以包括响应于由PLC设备接收到的外部前置码来检测来自PLC网络上的外部PLC设备的通信，终止到PLC网络的传输，以便 响应于外部前导码的特定于网络的共存扩展帧间间隔（cEIFS）时间段，以及在网络特定时间段结束之后恢复到PLC网络的传输。

公开(公告)号：US20140105313A1

公开(公告)日：2014-04-17

申请号：US14052913

申请日：2013-10-14

Applicant: Texas Instruments Incorporated

Inventor： Il Han Kim ,  Tarkesh Pande ,  Anuj Batra

IPC: 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：US20130301649A1

公开(公告)日：2013-11-14

申请号：US13889878

申请日：2013-05-08

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Kumaran Vijayasankar ,  Ramanuja Vedantham ,  Tarkesh Pande

IPC: H04L12/413

CPC classification number: H04L12/413 ,  H04B2203/5408 ,  H04B2203/5416 ,  H04B2203/5433 ,  H04B2203/5445

Abstract: Embodiments of methods and systems for Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) with a random backoff time on a Power Line Communication (PLC) network are disclosed. The CSMA/CA method is independent of the algorithm used to update a contention window, so any contention window algorithm is supported. The PLC node runs an energy detection process first and then uses preamble detection only after energy detection is positive, or the node may run both energy detection and preamble detection simultaneously. Upon detection of a possible transmission on a PLC line due to energy detection, the PLC node will freeze a backoff counter decrementing process and will then wait for preamble detection to complete. If no energy is detected on the line, or if no preamble is detected after energy is sensed on the line, then the node will transmit is allowed by the contention window value.

Abstract translation: 公开了在电力线通信（PLC）网络上具有随机退避时间的具有冲突避免的载波侦听多路访问（CSMA / CA）的方法和系统的实施例。 CSMA / CA方法独立于用于更新争用窗口的算法，因此支持任何争用窗口算法。 PLC节点首先运行能量检测过程，然后仅在能量检测为正时才使用前导码检测，或者节点可以同时运行能量检测和前导码检测。 在检测到由于能量检测在PLC线路上发生可能的传输时，PLC节点将冻结退避计数器递减处理，然后等待前导码检测完成。 如果在线路上没有检测到能量，或者如果在线路上感测到能量之后没有检测到前导码，则通过竞争窗口值允许节点发送。

公开(公告)号：US20130279515A1

公开(公告)日：2013-10-24

申请号：US13848056

申请日：2013-03-20

Applicant: Texas Instruments Incorporated

Inventor： Kumaran Vijayasankar ,  Ramanuja Vedantham ,  Tarkesh Pande

IPC: H04L12/70

CPC classification number: H04L12/413 ,  H04B3/542 ,  H04B2203/5433 ,  H04L12/283 ,  H04L12/40156 ,  H04L47/805 ,  H04L2012/2843

Abstract: Embodiments of methods and systems for overlapping priority contention windows in G3-PLC networks are presented. In one embodiment, a Normal Priority Contention Window (NPCW) is allowed to overlap with a High Priority Contention Window (HPCW). The minimum contention window for the normal priority frames (i.e., NPCW) is equal to or longer than the contention window for high priority frames (i.e., HPCW). By making the NPCW longer than the HPCW, the high priority frames will have a better chance than normal priority frames to get access to the channel on transmission reattempts.

Abstract translation: 介绍了在G3-PLC网络中重叠优先竞争窗口的方法和系统的实施例。 在一个实施例中，允许正常优先权竞争窗口（NPCW）与高优先权争用窗口（HPCW）重叠。 正常优先级帧（即NPCW）的最小竞争窗口等于或大于高优先级帧（即HPCW）的争用窗口。 通过使NPCW比HPCW长，高优先级帧将比正常优先级帧更有可能在传输重新尝试时访问该信道。

公开(公告)号：US20130266081A1

公开(公告)日：2013-10-10

申请号：US13859705

申请日：2013-04-09

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Tarkesh Pande ,  Kumaran Vijayasankar ,  Ramanuja Vedantham ,  Il Han Kim

IPC: H04B3/54

CPC classification number: H04B3/54 ,  H04B2203/5408 ,  H04B2203/5416

Abstract: Embodiments of methods and systems for using both new and older modulation schemes in PLC networks—thereby supporting legacy systems—are disclosed. In one embodiment, common frames that need to be understood by all nodes to support the network will be sent two or more times using different modulation techniques. For example, all broadcast frames, such as beacon requests, beacons, and route requests may be transmitted once with differential modulation and once with coherent modulation. In one configuration, the beacons with differential modulation may be transmitted in one beacon period, and the beacons with coherent modulation may be transmitted in another beacon period. In another configuration, the differential and coherent beacons for a particular tone mask are transmitted one after the other and before any other tone mask beacon is transmitted.

Abstract translation: 公开了在PLC网络中使用新的和较旧的调制方案的方法和系统的实施例，从而支持传统系统。 在一个实施例中，需要被所有节点理解以支持网络的公共帧将使用不同的调制技术被发送两次或更多次。 例如，诸如信标请求，信标和路由请求之类的所有广播帧可以用差分调制发送一次，并且可以用相干调制一次。 在一种配置中，具有差分调制的信标可以在一个信标周期中发送，并且具有相干调制的信标可以在另一个信标周期中发送。 在另一种配置中，用于特定音调掩码的差分和相干信标一个接一个地发送，并且在任何其它音调掩码信标被发送之前传输。

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.