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11. 发明申请

US20140079142A1 ADVANCED SWITCH NODE SELECTION FOR POWER LINE COMMUNICATIONS NETWORK 有权
标题翻译：用于电力线通信网络的高级开关节点选择
公开(公告)号：US20140079142A1
公开(公告)日：2014-03-20
申请号：US13620829
申请日：2012-09-15
申请人： Ramanuja Vedantham , Kumaran Vijayasankar , Xiaolin Lu
发明人： Ramanuja Vedantham , Kumaran Vijayasankar , Xiaolin Lu
IPC分类号： H04L25/00
CPC分类号： H04L41/12 , H04B3/00 , H04B3/46 , H04B3/544
摘要： An algorithm for the promotion of terminal nodes to switch nodes in a PLC network reduces overall network overhead and collisions, while ensuring the appropriate selection of a switch node and minimizing the number of levels in a PLC network. It also ensures that the terminal nodes with appropriate signal-to-noise ratios (SNRs) are promoted. It is desirable to have a network with fewer levels. The disclosed approach favors the nodes that are closer to the DC to promote them as switch nodes. This is achieved by waiting for a smaller number of PNPDUs for a node that is closer to the DC in comparison to a node that is farther away from the DC.
摘要翻译：用于促进终端节点切换PLC网络中的节点的算法可减少整体网络开销和冲突，同时确保适当选择交换节点并最小化PLC网络中的级别数量。它还确保提供具有适当信噪比（SNR）的终端节点。希望具有较少级别的网络。所公开的方法有利于更接近DC的节点将其推广为交换节点。这是通过等待与离DC更远的节点相比更靠近DC的节点的较少数量的PNPDU来实现的。

12. 发明申请

US20120281717A1 Superframe Coordination in Beacon-Enabled Networks 有权
标题翻译：启用信标网络的超帧协调
公开(公告)号：US20120281717A1
公开(公告)日：2012-11-08
申请号：US13457638
申请日：2012-04-27
申请人： Kumaran Vijayasankar , Ramanuja Vedantham , Badri N. Varadarajan , Anand G. Dabak
发明人： Kumaran Vijayasankar , Ramanuja Vedantham , Badri N. Varadarajan , Anand G. Dabak
IPC分类号： H04B3/54 , H04J4/00 , H04J3/00
CPC分类号： H04B3/544 , H04B3/542 , H04B2203/5408 , H04B2203/5466 , H04B2203/5483 , H04B2203/5491 , H04L5/0044 , H04L5/0094 , H04L12/6418 , H04L25/0272
摘要： Systems and methods for designing, using, and/or implementing superframe coordination in beacon-enabled networks are described. In various implementations, these systems and methods may be applicable to Power Line Communications (PLC). For example, a method may include implementing a Media Access Control (MAC) superframe using a communication device. The MAC superframe may include a plurality of beacon slots, a plurality of Contention Access Period (CAP) slots following the plurality of beacon slots, a Contention Free Period (CFP) poll access slot following the plurality of CAP slots, a CFP slot following the CFP poll access slot, an inactivity period following the CFP slot, a beacon region following the inactivity period, and a communication slot following the beacon region. The method may also include communicating with another communication device using the MAC superframe.
摘要翻译：描述了在启用信标的网络中设计，使用和/或实现超帧协调的系统和方法。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，一种方法可以包括使用通信设备实现媒体访问控制（MAC）超帧。 MAC超帧可以包括多个信标时隙，在多个信标时隙之后的多个争用接入周期（CAP）时隙，跟随在多个CAP时隙之后的无竞争周期（CFP）轮询接入时隙，后面的CFP时隙 CFP轮询接入时隙，CFP时隙之后的不活动时段，跟随非活动时段的信标区域以及信标区域之后的通信时隙。该方法还可以包括使用MAC超帧与另一通信设备进行通信。

13. 发明申请

US20120263189A1 Beacon-Enabled Communications for Variable Payload Transfers 审中-公开
标题翻译：可变负载传输的信标通信
公开(公告)号：US20120263189A1
公开(公告)日：2012-10-18
申请号：US13443123
申请日：2012-04-10
申请人： Kumaran Vijayasankar , Ramanuja Vedantham , Badri N. Varadarajan , Anand G. Dabak
发明人： Kumaran Vijayasankar , Ramanuja Vedantham , Badri N. Varadarajan , Anand G. Dabak
IPC分类号： H04B3/54
CPC分类号： H04B3/544 , H04L5/0007 , H04L5/0053 , H04L25/0272
摘要： Systems and methods for designing, using, and/or implementing beacon-enabled communications for variable payload transfers are described. In various embodiments, these systems and methods may be applicable to power line communications (PLC). For example, a method may include implementing a superframe having a plurality of beacon slots, a plurality of intermediate slots following the beacon slots, and a poll-based Contention Free Period (CFP) slot following the intermediate slots. Each of the beacon slots and each of the intermediate slots may correspond to a respective one of a plurality of frequency subbands, and the poll-based CFP slot may correspond to a combination of the plurality of frequency subbands. The method may also include receiving a poll request over a first of the plurality of frequency subbands during the poll-based CFP slot, and then transmitting a data packet over a second of the plurality of frequency subbands during the poll-based CFP slot.
摘要翻译：描述了用于设计，使用和/或实施用于可变有效载荷传输的信标启用通信的系统和方法。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，一种方法可以包括实现具有多个信标时隙的多帧，在信标时隙之后的多个中间时隙，以及在中间时隙之后的基于轮询的无竞争周期（CFP）时隙。每个信标时隙和每个中间时隙可以对应于多个频率子带中的相应一个，并且基于轮询的CFP时隙可以对应于多个频率子带的组合。该方法还可以包括在基于轮询的CFP时隙期间在多个频率子带中的第一个频带上接收轮询请求，然后在基于轮询的CFP时隙期间在多个频率子带中的第二个频带上发送数据分组。

14. 发明授权

US08995437B2 Transmission of segmented frames in power line communication 有权
标题翻译：电力线通信中分段帧的传输
公开(公告)号：US08995437B2
公开(公告)日：2015-03-31
申请号：US13415597
申请日：2012-03-08
申请人： Kumaran Vijayasankar , Ramanuja Vedantham
发明人： Kumaran Vijayasankar , Ramanuja Vedantham
IPC分类号： H04L12/40 , H04L12/413 , H04L1/16
CPC分类号： 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
摘要： 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.
摘要翻译：数据帧可以在具有冲突避免（CSMA / CA）协议的载波侦听多路访问中使用无冲突时隙（CFS）从发送设备发送。在接收机处，接收分段的数据帧。数据由多个音调表示。如果由发射机请求，则通过分析接收的数据帧来准备一个音调映射响应命令，该命令指定一组优化的音调映射参数。任何先前确定的发送设备的音调映射响应命令被删除。可以在无冲突时隙中接收帧序列，但是在接收到整个帧段序列之后，只有一个音调映射响应被发送到发送设备。

15. 发明授权

US08787195B2 Beacon selection in communication networks 有权
标题翻译：通信网络中的信标选择
公开(公告)号：US08787195B2
公开(公告)日：2014-07-22
申请号：US13531324
申请日：2012-06-22
申请人： Kumaran Vijayasankar , Ramanuja Vedantham , Robert Liang , Susan Yim , Xiaolin Lu
发明人： Kumaran Vijayasankar , Ramanuja Vedantham , Robert Liang , Susan Yim , Xiaolin Lu
IPC分类号： H04L12/26
CPC分类号： H04B3/542 , H04L5/0007 , H04L25/0264
摘要： Systems and methods for beacon selection in communication networks are described. In various implementations, these systems and methods may be applicable to Power Line Communications (PLC). For example, a method may include performing, using a terminal device deployed in a communications network, receiving a beacon transmitted by a switch device within the communications network and, in response to the terminal device having had a previous connection with the switch device, determining a connection time of the previous connection. The method may also include performing at least one of: adding the switch device to a blacklist in response to the connection time being smaller than a first threshold value, or selecting the switch device for subsequent communication in response to the connection time being greater than a second threshold value.
摘要翻译：描述了通信网络中信标选择的系统和方法。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，一种方法可以包括使用部署在通信网络中的终端设备来接收由通信网络内的交换设备发送的信标，并且响应于终端设备已经与交换设备之前的连接，确定上一次连接的连接时间。该方法还可以包括执行以下至少之一：响应于小于第一阈值的连接时间将交换设备添加到黑名单中，或者响应于连接时间大于第一阈值来选择交换设备进行后续通信第二阈值。

16. 发明申请

US20130049939A1 Enhanced Carrier Sense Multiple Access (CSMA) Protocols 有权
公开(公告)号：US20130049939A1
公开(公告)日：2013-02-28
申请号：US13593428
申请日：2012-08-23
申请人： Kumaran Vijayasankar , Ramanuja Vedantham , Anand G. Dabak
发明人： Kumaran Vijayasankar , Ramanuja Vedantham , Anand G. Dabak
IPC分类号： G08C19/12
CPC分类号： H04L12/413 , H04B3/54 , H04B3/542 , H04B2203/5408 , H04B2203/5433 , H04L69/02
摘要： Systems and methods for enhanced carrier sense multiple access (CSMA) protocols are described. In various implementations, these systems and methods may be applicable to Power Line Communications (PLC). For example, a method 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.

17. 发明申请

US20120294377A1 Beacon Selection in Communication Networks 有权
标题翻译：通信网络中的信标选择
公开(公告)号：US20120294377A1
公开(公告)日：2012-11-22
申请号：US13531324
申请日：2012-06-22
申请人： Kumaran Vijayasankar , Ramanuja Vedantham , Robert Liang , Susan Yim , Xiaolin Lu
发明人： Kumaran Vijayasankar , Ramanuja Vedantham , Robert Liang , Susan Yim , Xiaolin Lu
IPC分类号： H04B3/00
CPC分类号： H04B3/542 , H04L5/0007 , H04L25/0264
摘要： Systems and methods for beacon selection in communication networks are described. In various implementations, these systems and methods may be applicable to Power Line Communications (PLC). For example, a method may include performing, using a terminal device deployed in a communications network, receiving a beacon transmitted by a switch device within the communications network and, in response to the terminal device having had a previous connection with the switch device, determining a connection time of the previous connection. The method may also include performing at least one of: adding the switch device to a blacklist in response to the connection time being smaller than a first threshold value, or selecting the switch device for subsequent communication in response to the connection time being greater than a second threshold value.
摘要翻译：描述了通信网络中信标选择的系统和方法。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，一种方法可以包括使用部署在通信网络中的终端设备来接收由通信网络内的交换设备发送的信标，并且响应于终端设备已经与交换设备之前的连接，确定上一次连接的连接时间。该方法还可以包括执行以下至少之一：响应于小于第一阈值的连接时间将交换设备添加到黑名单中，或者响应于连接时间大于第一阈值来选择交换设备进行后续通信第二阈值。

18. 发明授权

US08885505B2 Non-beacon network communications using frequency subbands 有权
标题翻译：使用频率子带的非信标网络通信
公开(公告)号：US08885505B2
公开(公告)日：2014-11-11
申请号：US13457590
申请日：2012-04-27
申请人： Ramanuja Vedantham , Kumaran Vijayasankar , Anand G. Dabak , Badri N. Varadarajan
发明人： Ramanuja Vedantham , Kumaran Vijayasankar , Anand G. Dabak , Badri N. Varadarajan
IPC分类号： H04W4/00 , H04B3/54 , H04L12/24
CPC分类号： H04W72/0453 , H04B3/544 , H04L41/0833 , H04W72/1231 , Y04S40/162
摘要： 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.
摘要翻译：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。

19. 发明授权

US08830868B2 Keep alive message overhead reduction for communication networks 有权
标题翻译：保持通信网络的活动消息开销降低
公开(公告)号：US08830868B2
公开(公告)日：2014-09-09
申请号：US13473359
申请日：2012-05-16
申请人： Ramanuja Vedantham , Kumaran Vijayasankar , Ram Krishnan
发明人： Ramanuja Vedantham , Kumaran Vijayasankar , Ram Krishnan
IPC分类号： H04L12/28
CPC分类号： H04W76/25 , H04W84/18
摘要： 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.
摘要翻译：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。

20. 发明授权

US08787404B2 Event-based keep alive times in communication networks 有权
标题翻译：基于事件的通信网络中保持活着的时间
公开(公告)号：US08787404B2
公开(公告)日：2014-07-22
申请号：US13473323
申请日：2012-05-16
申请人： Kumaran Vijayasankar , Ramanuja Vedantham , Xiaolin Lu
发明人： Kumaran Vijayasankar , Ramanuja Vedantham , Xiaolin Lu
IPC分类号： H04J3/16
CPC分类号： H02J13/0006 , H04L43/0811 , H04L43/10 , H04L47/28 , H04L67/12 , H04L69/28 , H04W84/18 , Y04S40/168
摘要： 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.
摘要翻译：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。

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