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公开(公告)号：US10135492B2
公开(公告)日：2018-11-20
申请号：US14072765
申请日：2013-11-05
Applicant: Texas Instruments Incorporated
Inventor： Kumaran Vijayasankar , Ramanuja Vedantham , Anuj Batra , Tarkesh Pande , Il Han Kim
Abstract: In a method for communicating with a plurality of devices using different communication protocols, a signal is received at a transceiver device from a neighbor device via a physical layer of a communication media. At a first time the signal contains a header frame from a first device conforming to a first communication protocol and at another time the signal contains a header frame from a second device conforming to a second communication protocol. The transceiver determines which of the different communication protocols is being used by each of the plurality of devices. The transceiver may then process inbound payload data using the indentified protocol type. Data frames are transmitted to the first device using the first communication protocol and data frames are transmitted to the second device using the second communication protocol.
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202.发明授权公开(公告)号：US09941929B2
公开(公告)日：2018-04-10
申请号：US14824506
申请日：2015-08-12
Applicant: Texas Instruments Incorporated
Inventor： Kumaran Vijayasankar , Ramanuja Vedantham , Tarkesh Pande
IPC: H04B3/54
CPC classification number: H04B3/54 , H04B2203/5408 , H04B2203/5416 , H04B2203/5433 , H04B2203/5445
Abstract: Embodiments of methods and systems for supporting coexistence of multiple technologies in a Power Line Communication (PLC) network are disclosed. A long coexistence preamble sequence may be transmitted by a device that has been forced to back off the PLC channel multiple times. The long coexistence sequence provides a way for the device to request channel access from devices on the channel using other technology. The device may transmit a data packet after transmitting the long coexistence preamble sequence. A network duty cycle time may also be defined as a maximum allowed duration for nodes of the same network to access the channel. When the network duty cycle time occurs, all nodes will back off the channel for a duty cycle extended inter frame space before transmitting again. The long coexistence preamble sequence and the network duty cycle time may be used together.
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公开(公告)号：US09894512B2
公开(公告)日：2018-02-13
申请号：US15494103
申请日：2017-04-21
Applicant: Texas Instruments Incorporated
Inventor： Arvind Kandhalu Raghu , Kaichien Tsai , Ramanuja Vedantham
Abstract: A BLE-Mesh device includes a controller coupled to a memory and to a transceiver adapted to be coupled to an antenna, wherein the controller implements an applications layer including BLE and Mesh applications, and a BLE stack and a mesh stack. The BLE-Mesh device has a switchable high-speed and low-speed mode and a speed switching algorithm for implementing a method of communications in BLE-mesh network. A broadcast ping is sent to neighborhood devices with a time to live (TTL)=1. A manufacturer's ID is analyzed to identify in a manufacturer's ID field in pongs received to determine a higher-speed capable device or a lower-speed device. A higher-speed data rate is utilized for mesh communications if a percentage of higher-speed capable devices is≧a threshold percentage or a lower-speed data rate is utilized for the mesh communications if the percentage of higher-speed capable devices is
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公开(公告)号：US09871630B2
公开(公告)日：2018-01-16
申请号：US14557858
申请日：2014-12-02
Applicant: Texas Instruments Incorporated
Inventor： Kumaran Vijayasankar , Ramanuja Vedantham , Anand G. Dabak , Badri N. Varadarajan , Il Han Kim , Xiaolin Lu
CPC classification number: H04L5/0048 , H04B3/54 , H04B3/542 , H04B2203/5408 , H04B2203/5466 , H04B2203/5483 , H04B2203/5491 , H04L5/0044 , H04L5/0055 , H04L5/0078 , H04L5/0094 , H04L25/0272
Abstract: Systems and methods for designing, using, and/or implementing hybrid communication networks are described. In various embodiments, these systems and methods may be applicable to power line communications (PLC). For example, one or more of the techniques disclosed herein may include methods to coordinate medium-to-low voltage (MV-LV) and low-to-low voltage (LV-LV) PLC networks when the MV-LV network operates in a frequency subband mode and the LV-LV network operates in wideband mode (i.e., hybrid communications). In some cases, MV routers and LV routers may have different profiles. For instance, MV-LV communications may be performed using MAC superframe structures, and first-level LV to lower-level LV communications may take place using a beacon mode. Lower layer LV nodes may communicate using non-beacon modes. Also, initial scanning procedures may encourage first-to-second-level LV device communications rather than MV-to-first-level LV connections.
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公开(公告)号：US09774421B2
公开(公告)日：2017-09-26
申请号：US14925030
申请日：2015-10-28
Applicant: Texas Instruments Incorporated
Inventor： Kumaran Vijayasankar , Tarkesh Pande , Ramanuja Vedantham
CPC classification number: H04L1/005 , G06F11/1004 , H03M13/09 , H03M13/1515 , H04B3/542 , H04B3/544 , H04B2203/5408 , H04L1/0057 , H04L1/0061 , H04L1/0071 , H04L1/08 , H04L1/1607 , H04L47/10
Abstract: Embodiments of methods and systems are presented for handling PHY frames with multiple Reed-Solomon encoded blocks in PLC networks. A PHY frame is receive from a PLC device, the PHY frame comprising two or more Reed-Solomon encoded blocks. A first Reed-Solomon encoded block comprises a media access control (MAC) header. The first Reed-Solomon encoded block is decoded. An error-detection check is performed on the first decoded Reed-Solomon encoded block.
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Patent Agency Ranking
公开(公告)号：US20170180004A1
公开(公告)日：2017-06-22
申请号：US15451534
申请日：2017-03-07
Applicant: Texas Instruments Incorporated
Inventor： Kumaran Vijayasankar , Ramanuja Vedantham , Robert Liang
CPC classification number: H04W48/10 , H04B3/542 , H04B2203/5408 , H04B2203/5416 , H04B2203/5433 , H04L41/0631 , H04L69/324 , H04W4/80 , H04W12/06 , H04W24/04 , H04W48/16 , H04W48/17
Abstract: In a disclosed embodiment, a power line communication (PLC) device sends an active channel scan request from a host layer to an adaptation layer. In response to the adaptation layer receiving the request, a MAC layer is instructed to broadcast a beacon request frame. The PLC device receives from each of one or more neighboring devices that respond to the beacon request frame a beacon frame including an address and a personal area network (PAN) identifier. A listing of PAN identifiers indicated by the beacon frames is provided to the host layer. The host layer selects a target network corresponding to a selected PAN identifier and selects one of the one or more neighboring devices associated with the selected PAN identifier as a target bootstrapping agent. The host layer instructs the adaptation layer to join the target network using the target bootstrapping agent.
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公开(公告)号：US20170142237A1
公开(公告)日：2017-05-18
申请号：US15419045
申请日：2017-01-30
Applicant: Texas Instruments Incorporated
Inventor： Gang Xu , Ramanuja Vedantham , Kumaran Vijayasankar , Anand G Dabak , Tarkesh Pande , Il Han Kim , Xiaolin Lu
CPC classification number: H04L69/22 , H04B3/54 , H04B3/542 , H04B2203/5408
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.
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公开(公告)号：US09584186B2
公开(公告)日：2017-02-28
申请号：US15072946
申请日：2016-03-17
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Kumaran Vijayasankar , Ramanuja Vedantham , Anand G. Dabak
CPC classification number: H04B3/544 , H04B3/30 , H04B3/54 , H04B3/542 , H04B2203/5408 , H04H20/42 , H04L5/005 , H04L25/024
Abstract: A communications device for Multi-Tone Mask (MTM) mode communications at a first router on a powerline communications (PLC) channel in a PLC network including a subnetwork including at least said first router associated with a plurality of nodes, comprising. A memory which stores a broadcast transmission MTM (BT-MTM) communications algorithm. A modem with processor is coupled to the memory. The processor is programmed to implement said BT-MTM communications algorithm, said BT-MTM communications algorithm.
Abstract translation: 包括在包括至少包括与多个节点相关联的所述第一路由器的子网络的PLC网络中的电力线通信（PLC）通道上的第一路由器处的多音调掩模（MTM）模式通信的通信设备。 存储广播传输MTM（BT-MTM）通信算法的存储器。 具有处理器的调制解调器耦合到存储器。 该处理器被编程为实现所述BT-MTM通信算法，所述BT-MTM通信算法。
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公开(公告)号：US09379904B2
公开(公告)日：2016-06-28
申请号：US15001925
申请日：2016-01-20
Applicant: Texas Instruments Incorporated
Inventor： Kumaran Vijayasankar , Ramanuja Vedantham , Anand G. Dabak
IPC: H04L12/413 , H04L29/06 , H04B3/54
CPC classification number: H04L12/413 , H04B3/54 , H04B3/542 , H04B2203/5408 , H04B2203/5433 , H04L69/02
Abstract: Power Line Communications (PLC) device for enhanced carrier sense multiple access (CSMA) protocols are described. The PLC device includes a modem, an AC interface and a PLC engine. The engine is configured for transmitting PLC packets over a plurality of electrical wires using a particular channel. Transmitting a normal priority packet may include attempting to access a communications channel to transmit a frame after a backoff time proportional to a randomly generated number within a contention window (CW), the CW having an initial value carried over from a previous transmission of a different frame. Additionally or alternatively, some of techniques described herein may facilitate the spreading of the time over which devices attempt to transmit packets, thereby reducing the probability of collisions using, for example, Additive Decrease Multiplicative Increase (ADMI) mechanisms.
Abstract translation: 描述了用于增强载波侦听多路访问（CSMA）协议的电力线通信（PLC）设备。 PLC设备包括调制解调器，AC接口和PLC引擎。 发动机被配置为使用特定通道在多个电线上传输PLC分组。 发送正常优先级分组可以包括尝试在与竞争窗口（CW）中的随机生成的数字成比例的退避时间之后访问通信信道以发送帧，所述CW具有从先前的不同的传输中携带的初始值 帧。 附加地或替代地，本文描述的技术中的一些技术可以有助于扩展这些设备尝试发送分组的时间，由此例如使用添加减少乘数增加（ADMI）机制来减少冲突的概率。
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公开(公告)号：US09350424B2
公开(公告)日：2016-05-24
申请号：US14619514
申请日：2015-02-11
Applicant: Texas Instruments Incorporated
Inventor： Tarkesh Pande , Ramanuja Vedantham , Il Han Kim , Anand G. Dabak
IPC: H04B3/54 , H04L12/805 , H04L12/919 , H04L12/24 , H04L12/28 , H04L12/413
CPC classification number: H04B3/544 , H04B3/54 , H04B3/542 , H04B2203/5408 , H04L12/2803 , H04L12/2836 , H04L12/413 , H04L41/0896 , H04L47/36 , H04L47/765 , H04L2012/2843
Abstract: Systems and methods for implementing coexistence by requesting access to a channel in power line communications (PLC) are described. In an illustrative embodiment, a method performed by a PLC device, such as a PLC meter, may include detecting a communication from foreign PLC device on a PLC network in response to a foreign preamble received by the PLC device, determining whether a threshold back-off duration has been reached, and transmitting a channel access request in response to a determination that the threshold back-off duration has been reached.
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