公开(公告)号：US20120327770A1

公开(公告)日：2012-12-27

申请号：US13529146

申请日：2012-06-21

Applicant: KUMARAN VIJAYASANKAR ,  RAMANUJA VEDANTHAM ,  ANAND G. DABAK ,  TARKESH PANDE ,  IL HAN KIM

Inventor： KUMARAN VIJAYASANKAR ,  RAMANUJA VEDANTHAM ,  ANAND G. DABAK ,  TARKESH PANDE ,  IL HAN KIM

IPC: H04L12/24 ,  H04L12/26 ,  H04B3/54

CPC classification number: H04L47/266 ,  H04B3/542 ,  H04B2203/5408 ,  H04L47/12 ,  H04L47/127 ,  H04L47/30 ,  H04L47/32 ,  Y02D50/10

Abstract: A method of powerline communications in a powerline communications (PLC) network including a first node and at least a second node. The first node transmits a data frame to the second node over a PLC channel. The second node has a data buffer for storing received information. The second node runs a flow control algorithm which determines a current congestion condition or a projected congestion condition of the data buffer based on at least one congestion parameter. The current congestion condition and projected congestion condition include nearly congested and fully congested. When the current or projected congestion condition is either nearly congested or fully congested, the second node transmits a BUSY including frame over the PLC channel to at least the first node. The first node defers transmitting of any frames to the second node for a congestion clearing wait time.

Abstract translation: 一种在包括第一节点和至少第二节点的电力线通信（PLC）网络中的电力线通信的方法。 第一个节点通过PLC通道将数据帧发送到第二个节点。 第二节点具有用于存储接收到的信息的数据缓冲器。 第二节点运行流控制算法，其基于至少一个拥塞参数确定数据缓冲器的当前拥塞状况或预计拥塞状况。 目前的拥挤状况和预计的拥挤情况包括几乎拥挤和充分拥挤。 当当前或预计的拥塞状况几乎拥塞或完全拥塞时，第二节点将包括在PLC信道上的帧的BUSY发送到至少第一节点。 第一个节点将拥塞清除等待时间的任何帧的发送延迟到第二节点。

公开(公告)号：US20120314744A1

公开(公告)日：2012-12-13

申请号：US13493268

申请日：2012-06-11

Applicant: RAMANUJA VEDANTHAM ,  ANAND G. DABAK ,  TARKESH PANDE ,  IL HAN KIM ,  KUMARAN VIJAYASANKAR

Inventor： RAMANUJA VEDANTHAM ,  ANAND G. DABAK ,  TARKESH PANDE ,  IL HAN KIM ,  KUMARAN VIJAYASANKAR

IPC: H04B3/54 ,  H04B1/38

CPC classification number: H04B3/542 ,  H04B2203/5408 ,  H04B2203/5445 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0094 ,  H04L27/2602 ,  H04L27/2613 ,  H04L27/2666 ,  H04L69/22

Abstract: A method of powerline communications (PLC) includes compiling a data frame for physical layer (PHY) by a first communications device at a first communications node on a powerline of a PLC network. The data frame includes a single tone PHY header portion and a data payload portion in a set of tones including at least one tone having a frequency different from a frequency of the single tone. The PHY header portion includes tone mask identification information identifying the set of tones. The first communications device transmits the data frame over the powerline to a second communications device at a second communications node on the powerline. The second communications device receives the data frame, and decodes the data payload using the tone mask identification information in the PHY header portion.

Abstract translation: 电力线通信（PLC）的方法包括在PLC网络的电力线上的第一通信节点处由第一通信设备编译用于物理层（PHY）的数据帧。 数据帧包括一组音调中的单音PHY头部部分和数据有效载荷部分，包括具有与单音频率不同的频率的至少一个音调。 PHY报头部分包括识别该组音调的色调掩码识别信息。 第一通信设备通过电力线将数据帧发送到电力线上的第二通信节点处的第二通信设备。 第二通信设备接收数据帧，并使用PHY报头部分中的色调掩码识别信息解码数据有效载荷。

公开(公告)号：US20120281716A1

公开(公告)日：2012-11-08

申请号：US13457612

申请日：2012-04-27

Applicant: Kumaran Vijayasankar ,  Ramanuja Vedantham ,  Anand G. Dabak ,  Badri N. Varadarajan ,  Il Han Kim ,  Xiaolin Lu

Inventor： Kumaran Vijayasankar ,  Ramanuja Vedantham ,  Anand G. Dabak ,  Badri N. Varadarajan ,  Il Han Kim ,  Xiaolin Lu

IPC: H04J4/00 ,  H04B3/54 ,  H04J1/00

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.

Abstract translation: 描述了用于设计，使用和/或实现混合通信网络的系统和方法。 在各种实施例中，这些系统和方法可以适用于电力线通信（PLC）。 例如，本文公开的技术中的一个或多个技术可以包括当MV-LV网络以一个或多个的方式工作时协调中低电压（MV-LV）和低到低电压（LV-LV）PLC网络的方法 频率子带模式和LV-LV网络在宽带模式（即，混合通信）中工作。 在某些情况下，MV路由器和LV路由器可能具有不同的配置文件。 例如，可以使用MAC超帧结构来执行MV-LV通信，并且可以使用信标模式进行第一级LV到低级LV通信。 下层LV节点可以使用非信标模式进行通信。 此外，初始扫描程序可以鼓励第一到第二级LV设备通信，而不是MV到第一级LV连接。

公开(公告)号：US09008124B2

公开(公告)日：2015-04-14

申请号：US13408521

申请日：2012-02-29

Applicant: Kumaran Vijayasankar ,  Shu Du ,  Anand G. Dabak ,  Badri N. Varadarajan ,  Il Han Kim ,  Xiaolin Lu

Inventor： Kumaran Vijayasankar ,  Shu Du ,  Anand G. Dabak ,  Badri N. Varadarajan ,  Il Han Kim ,  Xiaolin Lu

IPC: H04B3/54 ,  H04L12/413 ,  H04L12/28 ,  H04B3/56

CPC classification number: H04L12/413 ,  H04B3/54 ,  H04B3/56 ,  H04B2203/5416 ,  H04B2203/5466 ,  H04L12/2838 ,  H04L2012/2843

Abstract: Systems and methods for designing, using, and/or implementing media access control (MAC) protocols with subbanding are described. In some embodiments, a method may include receiving a beacon packet during one of a plurality of beacon slots of a superframe, each beacon slot corresponding to one of a plurality of different downlink subbands. The method may also include identifying, based on the received beacon packet, contention access periods following the beacon slots, each of the contention access periods corresponding to one of a plurality of different uplink subbands. The method may further include transmitting an information packet over each of the plurality of uplink subbands during the contention access periods. Then, the method may include receiving, during a guaranteed time slot following the contention access periods, an indication of a selected one of the plurality of uplink subbands to be used in a subsequent communications.

Abstract translation: 描述了用于设计，使用和/或实现具有子带的媒体访问控制（MAC）协议的系统和方法。 在一些实施例中，一种方法可以包括在超帧的多个信标时隙之一期间接收信标分组，每个信标时隙对应于多个不同的下行链路子带中的一个。 该方法还可以包括基于接收到的信标分组来识别在信标时隙之后的争用接入周期，每个竞争接入周期对应于多个不同的上行链路子带之一。 该方法还可以包括在竞争访问周期期间在多个上行链路子带中的每一个上传输信息分组。 然后，该方法可以包括在竞争访问周期之后的保证时隙期间接收要在后续通信中使用的多个上行链路子带中所选择的一个的指示。

公开(公告)号：US08929398B2

公开(公告)日：2015-01-06

申请号：US13528667

申请日：2012-06-20

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

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

IPC: H04J3/24 ,  H04L12/26 ,  H04L1/00 ,  H04M9/00 ,  H04L29/06 ,  H04B3/54

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

Abstract: A method of powerline communications including a first node and at least a second node on a PLC channel in a PLC network. The first node sends a physical layer (PHY) data frame on the PLC channel including 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 second node receives the data frame. The second node compares its network address to the destination address before decoding the MAC header and MAC payload, providing power savings by allowing the second node to not decode the MAC header or MAC payload if its network address does not match the destination address in the PHY header of the data frame.

Abstract translation: 一种电力线通信方法，包括PLC网络中PLC通道上的第一节点和至少第二节点。 第一节点在PLC信道上发送物理层（PHY）数据帧，包括前导码，PHY头，MAC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。 第二个节点接收数据帧。 第二节点在解码MAC报头和MAC有效载荷之前将其网络地址与目标地址进行比较，通过允许第二节点如果其网络地址与PHY中的目标地址不匹配，则不解码MAC报头或MAC有效载荷，从而提供功率节省 数据帧的头。

公开(公告)号：US08913495B2

公开(公告)日：2014-12-16

申请号：US13529146

申请日：2012-06-21

Applicant: Kumaran Vijayasankar ,  Ramanuja Vedantham ,  Anand G. Dabak ,  Tarkesh Pande ,  Il Han Kim

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

IPC: H04L12/24 ,  H04L12/825 ,  H04B3/54 ,  H04L12/801 ,  H04L12/823 ,  H04L12/835

CPC classification number: H04L47/266 ,  H04B3/542 ,  H04B2203/5408 ,  H04L47/12 ,  H04L47/127 ,  H04L47/30 ,  H04L47/32 ,  Y02D50/10

Abstract: A method of powerline communications in a powerline communications (PLC) network including a first node and at least a second node. The first node transmits a data frame to the second node over a PLC channel. The second node has a data buffer for storing received information. The second node runs a flow control algorithm which determines a current congestion condition or a projected congestion condition of the data buffer based on at least one congestion parameter. The current congestion condition and projected congestion condition include nearly congested and fully congested. When the current or projected congestion condition is either nearly congested or fully congested, the second node transmits a BUSY including frame over the PLC channel to at least the first node. The first node defers transmitting of any frames to the second node for a congestion clearing wait time.

Abstract translation: 一种在包括第一节点和至少第二节点的电力线通信（PLC）网络中的电力线通信的方法。 第一个节点通过PLC通道将数据帧发送到第二个节点。 第二节点具有用于存储接收到的信息的数据缓冲器。 第二节点运行流控制算法，其基于至少一个拥塞参数确定数据缓冲器的当前拥塞状况或预计拥塞状况。 目前的拥挤状况和预计的拥挤情况包括几乎拥挤和充分拥挤。 当当前或预计的拥塞状况几乎拥塞或完全拥塞时，第二节点将包括在PLC信道上的帧的BUSY发送到至少第一节点。 第一个节点将拥塞清除等待时间的任何帧的发送延迟到第二节点。

公开(公告)号：US08885505B2

公开(公告)日：2014-11-11

申请号：US13457590

申请日：2012-04-27

Applicant: Ramanuja Vedantham ,  Kumaran Vijayasankar ,  Anand G. Dabak ,  Badri N. Varadarajan

Inventor： Ramanuja Vedantham ,  Kumaran Vijayasankar ,  Anand G. Dabak ,  Badri N. Varadarajan

IPC: H04W4/00 ,  H04B3/54 ,  H04L12/24

CPC classification number: H04W72/0453 ,  H04B3/544 ,  H04L41/0833 ,  H04W72/1231 ,  Y04S40/162

Abstract: Systems and methods for designing, using, and/or implementing non-beacon network communications using frequency subbands are described. In various implementations, these systems and methods may be applicable to Power Line Communications (PLC). For example, a method may include transmitting a beacon request message over a given one of a plurality of frequency subbands, receiving a plurality of beacons in response to having transmitted the beacon request message, each of the plurality of beacons received over a respective one of the plurality of frequency subbands, and calculating a downlink quality report based, at least in part, upon the received beacons. The method may also include transmitting the downlink quality report over each of the plurality of frequency subbands and receiving a subband allocation command in response to having transmitted the downlink quality report, the subband allocation command indicating a downlink subband assignment and an uplink subband assignment.

Abstract translation: 描述了使用频率子带设计，使用和/或实现非信标网络通信的系统和方法。 在各种实现中，这些系统和方法可以适用于电力线通信（PLC）。 例如，一种方法可以包括在多个频率子带中的给定的一个频带上传送信标请求消息，响应于已经发送了信标请求消息来接收多个信标，多个信标中的每一个在 所述多个频率子带，并且至少部分地基于所接收的信标来计算下行链路质量报告。 该方法还可以包括：响应于已经发送下行链路质量报告，指示下行链路子带分配的子带分配命令和上行链路子带分配，在多个频率子带中的每一个上发送下行链路质量报告，并接收子带分配命令。

公开(公告)号：US08830868B2

公开(公告)日：2014-09-09

申请号：US13473359

申请日：2012-05-16

Applicant: Ramanuja Vedantham ,  Kumaran Vijayasankar ,  Ram Krishnan

Inventor： Ramanuja Vedantham ,  Kumaran Vijayasankar ,  Ram Krishnan

IPC: H04L12/28

CPC classification number: H04W76/25 ,  H04W84/18

Abstract: A method of communications in a network having plurality of nodes including a base node (BN) and a plurality of levels (i) each including at least one service node (SN). The number (Ni(t)) of SNs registered in each of a plurality of i are determined. The current Keep Alive timer out (KA_TO) value for a KA timer at the BN is dynamically adjusted to an updated KA_TO value based on Ni(t) and i. Dynamically adjusting KA_TO values reduces the KA message overhead the network compared to known KA_TO value implementations.

Abstract translation: 一种具有多个节点的网络中的通信方法，所述多个节点包括基本节点（BN）和多个级别（i），每个级别包括至少一个服务节点（SN）。 确定登记在多个i中的每一个中的SN的数量（Ni（t））。 基于Ni（t）和i，动态调整BN处的KA定时器的当前Keep Alive定时器输出（KA_TO）值为更新的KA_TO值。 与已知的KA_TO值实现相比，动态调整KA_TO值可以降低网络的KA消息开销。

公开(公告)号：US08787404B2

公开(公告)日：2014-07-22

申请号：US13473323

申请日：2012-05-16

Applicant: Kumaran Vijayasankar ,  Ramanuja Vedantham ,  Xiaolin Lu

Inventor： Kumaran Vijayasankar ,  Ramanuja Vedantham ,  Xiaolin Lu

IPC: H04J3/16

CPC classification number: H02J13/0006 ,  H04L43/0811 ,  H04L43/10 ,  H04L47/28 ,  H04L67/12 ,  H04L69/28 ,  H04W84/18 ,  Y04S40/168

Abstract: A method of communicating in a network having a plurality of nodes including a base node (BN), and a plurality of service nodes (SNs) having at least one switch node (SW) and at least one terminal node (TN). The method includes at least one of a) a first SN from the plurality of SNs receiving (i) a data/ALV_B/ACK frame from the BN or (ii) a beacon from the BN or SW, and restarting a first KA timer at the first SN upon (i) or (ii), and b) restarting an ALV_S timer at the BN for the first SN upon receiving a data/ALV_S/ACK frame from the first SN.

Abstract translation: 一种在具有多个节点的网络中通信的方法，所述多个节点包括基本节点（BN）以及具有至少一个交换节点（SW）和至少一个终端节点（TN）的多个服务节点（SN）。 所述方法包括以下中的至少一个：a）来自所述多个SN的第一SN接收（i）来自所述BN的数据/ ALV_B / ACK帧，或者（ii）来自所述BN或SW的信标，以及重新启动第一KA定时器 （i）或（ii）中的第一SN，以及b）当从第一SN接收到数据/ ALV_S / ACK帧时，在BN处为第一SN重新启动ALV_S定时器。

公开(公告)号：US20130215885A1

公开(公告)日：2013-08-22

申请号：US13415597

申请日：2012-03-08

Applicant: Kumaran Vijayasankar ,  Ramanuja Vedantham

Inventor： Kumaran Vijayasankar ,  Ramanuja Vedantham

IPC: H04B3/54 ,  H04L12/413

CPC classification number: H04L12/413 ,  H04B3/542 ,  H04B3/544 ,  H04B2203/5408 ,  H04B2203/5454 ,  H04L1/0041 ,  H04L1/0065 ,  H04L1/0067 ,  H04L1/08 ,  H04L1/1671 ,  H04L1/18 ,  H04L5/0044 ,  H04L5/0094 ,  H04L27/2601 ,  H04L27/2646

Abstract: Segmented frames of data may be transmitted from a transmitting device using conflict free slots (CFS) within a carrier sense multiple access with collision avoidance (CSMA/CA) protocol on a noisy media. At a receiver, a segmented frame of data is received. The data is represented by a plurality of tones. If requested by the transmitter, a tone map response command is prepared that specifies a set of optimized tone map parameters by analyzing the received frame of data. Any previously determined tone map response commands to the transmitting device are deleted. A sequence of frame segments may be received in conflict free slots, but only one tone map response is transmitted to the transmitting device after receiving the entire sequence of frame segments.