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公开(公告)号：US09182493B2
公开(公告)日：2015-11-10
申请号：US13415609
申请日：2012-03-08
Applicant: Deric Wayne Waters , Ariton E. Xhafa , Ramanuja Vedantham
Inventor： Deric Wayne Waters , Ariton E. Xhafa , Ramanuja Vedantham
CPC classification number: G01S19/05 , G01S19/256 , H04W56/0045
Abstract: Apparatus and method for providing fine timing assistance to global navigation satellite systems (GNSS) via wireless local area network (WLAN). In one embodiment, a method for synchronizing a global navigation satellite system (GNSS) receiver includes receiving, by a wireless device, via a wireless local area network (WLAN), fine time assistance information transmitted by an assisting device connected to the WLAN. A time value of a GNSS clock of the wireless device is adjusted based on the fine time assistance information. Based on the adjusted time value, GNSS codes of a GNSS positioning signal are acquired by the wireless device.
Abstract translation: 通过无线局域网（WLAN）向全球导航卫星系统（GNSS）提供精确时序辅助的装置和方法。 在一个实施例中，用于同步全球导航卫星系统（GNSS）接收机的方法包括经由无线局域网（WLAN）由无线设备接收由连接到WLAN的辅助设备发送的精细时间辅助信息。 基于精细时间辅助信息来调整无线装置的GNSS时钟的时间值。 基于调整后的时间值，通过无线装置获取GNSS定位信号的GNSS码。
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公开(公告)号：US08966337B2
公开(公告)日：2015-02-24
申请号：US13528191
申请日：2012-06-20
Applicant: Ramanuja Vedantham , Gang Xu , Kumaran Vijayasankar , Anand G. Dabak , Tarkesh Pande , Il Han Kim , Xiaolin Lu
Inventor： Ramanuja Vedantham , Gang Xu , Kumaran Vijayasankar , Anand G. Dabak , Tarkesh Pande , Il Han Kim , Xiaolin Lu
CPC classification number: G06F11/1004 , H03M13/09
Abstract: A method of powerline communications including a first node and at least a second node on a powerline communications (PLC) channel in a PLC network. The first node sends a physical layer (PHY) data frame on the PLC channel including a preamble, a PHY header, a MAC header and a MAC payload. The MAC header includes a Cyclic Redundancy Check (CRC) field (MH-CRC field). The second node receives the data frame, parses the MAC header to reach the MH-CRC field, and performs CRC verification using the MH-CRC field to verify the MAC header. If the CRC verification is successful, (i) the second node parses another portion of the MAC header to identify a destination address of the data frame and (ii) to determine whether the data frame is intended for the second node from the destination address.
Abstract translation: 一种包括PLC网络中电力线通信（PLC）通道上的第一节点和至少第二节点的电力线通信的方法。 第一节点在PLC信道上发送物理层（PHY）数据帧，包括前同步码，PHY报头，MAC报头和MAC有效载荷。 MAC报头包括循环冗余校验（CRC）字段（MH-CRC字段）。 第二节点接收数据帧，解析MAC报头到达MH-CRC字段，并使用MH-CRC字段进行CRC校验，以验证MAC报头。 如果CRC验证成功，则（i）第二节点解析MAC报头的另一部分以识别数据帧的目的地址，以及（ii）从目的地地址确定数据帧是否用于第二节点。
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公开(公告)号：US08830929B2
公开(公告)日：2014-09-09
申请号：US13161082
申请日：2011-06-15
Applicant: Yanjun Sun , Ariton E. Xhafa , Ramanuja Vedantham , Xiaolin Lu
Inventor： Yanjun Sun , Ariton E. Xhafa , Ramanuja Vedantham , Xiaolin Lu
CPC classification number: H04W72/00 , H04W72/04 , H04W72/12 , H04W72/1215 , H04W84/12 , H04W84/18 , H04W88/06
Abstract: A wireless combination device includes a first wireless transceiver configured for communication via a first wireless network over a first band, and a second wireless transceiver configured for communication via a second wireless network over a second band that overlaps the second band. The combination device includes a medium allocation scheduler coupled to the first wireless transceiver and second wireless transceiver for implementing spaced-mode operation that intentionally inserts idle gaps in transmissions via the second wireless network when triggered by the presence of at least one spaced-mode triggering condition. The idle gaps allow wireless transmissions via the first wireless network to be received by the combination device with higher probability, and without the need for clear to send (C2S) protection.
Abstract translation: 无线组合设备包括被配置用于经由第一频带经由第一无线网络进行通信的第一无线收发器和被配置用于经由与第二频带重叠的第二频带上的第二无线网络进行通信的第二无线收发器。 组合设备包括耦合到第一无线收发器的介质分配调度器和第二无线收发器，用于实现间隔模式操作，其在由至少一个间隔触发条件的存在触发时经由第二无线网络故意插入传输中的空闲间隙 。 空闲间隙允许经由第一无线网络的无线传输以更高的概率被组合设备接收，并且不需要清除发送（C2S）保护。
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公开(公告)号：US08717923B2
公开(公告)日：2014-05-06
申请号：US13287219
申请日：2011-11-02
Applicant: Ramanuja Vedantham , Xiaolin Lu , Assaf Sella , Josef Peery , Ariton Xhafa , Yanjun Sun
Inventor： Ramanuja Vedantham , Xiaolin Lu , Assaf Sella , Josef Peery , Ariton Xhafa , Yanjun Sun
IPC: H04J1/16
CPC classification number: H04L1/1854 , H04W4/08 , H04W4/50 , H04W24/02 , H04W48/08 , H04W84/12 , H04W88/02 , H04W88/12 , H04W92/18 , Y02D70/142 , Y02D70/22 , Y02D70/23
Abstract: A system and method for reducing power consumption of a wireless device operating as a soft access point. In one embodiment, a wireless device includes a soft access point controller that configures the wireless device to operate as a group owner in a peer-to-peer wireless local area network. The soft access point controller includes a beacon controller. The beacon controller is configured to transmit beacon frames at a first periodic interval. The beacon controller is also configured to extend a discovery interval of a wireless station by transmitting acknowledgement packets at a second periodic interval. The second periodic interval is shorter than the first periodic interval and shorter than a minimum discovery scan timeout of the wireless station.
Abstract translation: 一种用于降低作为软接入点操作的无线设备的功耗的系统和方法。 在一个实施例中，无线设备包括软接入点控制器，其将无线设备配置为在对等无线局域网中作为组所有者操作。 软接入点控制器包括信标控制器。 信标控制器被配置为以第一周期性间隔发送信标帧。 信标控制器还被配置为通过以第二周期性间隔发送确认分组来扩展无线站的发现间隔。 第二周期性间隔比第一周期性间隔短，并且短于无线站的最小发现扫描超时。
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公开(公告)号：US20140079142A1
公开(公告)日：2014-03-20
申请号：US13620829
申请日：2012-09-15
Applicant: Ramanuja Vedantham , Kumaran Vijayasankar , Xiaolin Lu
Inventor： Ramanuja Vedantham , Kumaran Vijayasankar , Xiaolin Lu
IPC: H04L25/00
Abstract: 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.
Abstract translation: 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。
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Patent Agency Ranking
公开(公告)号：US20130194965A1
公开(公告)日：2013-08-01
申请号：US13473359
申请日：2012-05-16
Applicant: RAMANUJA VEDANTHAM , KUMARAN VIJAYASANKAR , RAM KRISHNAN
Inventor： RAMANUJA VEDANTHAM , KUMARAN VIJAYASANKAR , RAM KRISHNAN
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。
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7.发明申请CO-EXISTENCE OF MULTI-CARRIER AND SINGLE CARRIER COMMUNICATION STANDARDS ON SHARED PLC CHANNEL 审中-公开多载波和单载波通信标准在共享PLC通道上的共存公开(公告)号：US20120320995A1
公开(公告)日：2012-12-20
申请号：US13489163
申请日：2012-06-05
Applicant: ANAND G. DABAK , TARKESH PANDE , RAMANUJA VEDANTHAM
Inventor： ANAND G. DABAK , TARKESH PANDE , RAMANUJA VEDANTHAM
CPC classification number: H04B3/54 , H04B2203/5416 , H04B2203/5425 , H04B2203/5495
Abstract: A method for reducing interference on a shared powerline communications (PLC) channel in a PLC network including a first node using a multi-carrier modulation communication standard operating at a first and second carrier frequency and a second node using a single-carrier modulation communication standard operating based on a single-carrier frequency. (i) Non-overlapping transmission times are determined for transmissions by the first node relative to second node transmission times for transmissions from the second node or (ii) non-overlapping frequencies are selected for the first carrier frequency and second carrier frequency which do not overlap with the single-carrier frequency or frequencies based on the single-carrier frequency. The second node transmits using the single-carrier modulation communication standard at the second node transmission times. The first node transmits using the multi-carrier modulation communication standard at the non-overlapping transmission times or non-overlapping frequencies.
Abstract translation: 一种用于减少PLC网络中的共享电力线通信（PLC）信道上的干扰的方法，所述PLC网络包括使用以第一和第二载波频率工作的多载波调制通信标准的第一节点和使用单载波调制通信标准的第二节点 基于单载波频率工作。 （i）确定第一节点相对于来自第二节点的传输的第二节点传输时间的传输的非重叠传输时间，或者（ii）对于不是的第一载波频率和第二载波频率选择非重叠频率 与基于单载波频率的单载波频率或频率重叠。 第二节点在第二节点传输时使用单载波调制通信标准传输。 第一节点使用多载波调制通信标准在非重叠发射次数或非重叠频率下发射。
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公开(公告)号：US20120281717A1
公开(公告)日：2012-11-08
申请号：US13457638
申请日：2012-04-27
Applicant: Kumaran Vijayasankar , Ramanuja Vedantham , Badri N. Varadarajan , Anand G. Dabak
Inventor： Kumaran Vijayasankar , Ramanuja Vedantham , Badri N. Varadarajan , Anand G. Dabak
CPC classification number: H04B3/544 , H04B3/542 , H04B2203/5408 , H04B2203/5466 , H04B2203/5483 , H04B2203/5491 , H04L5/0044 , H04L5/0094 , H04L12/6418 , H04L25/0272
Abstract: 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.
Abstract translation: 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。
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公开(公告)号：US20120263189A1
公开(公告)日：2012-10-18
申请号：US13443123
申请日：2012-04-10
Applicant: Kumaran Vijayasankar , Ramanuja Vedantham , Badri N. Varadarajan , Anand G. Dabak
Inventor： Kumaran Vijayasankar , Ramanuja Vedantham , Badri N. Varadarajan , Anand G. Dabak
IPC: H04B3/54
CPC classification number: H04B3/544 , H04L5/0007 , H04L5/0053 , H04L25/0272
Abstract: 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.
Abstract translation: 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。
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公开(公告)号：US20120184330A1
公开(公告)日：2012-07-19
申请号：US13351846
申请日：2012-01-17
Applicant: Yanjun SUN , Ariton E. XHAFA , Ramanuja VEDANTHAM , Josef PEERY , Assaf SELLA , Xiaolin LU
Inventor： Yanjun SUN , Ariton E. XHAFA , Ramanuja VEDANTHAM , Josef PEERY , Assaf SELLA , Xiaolin LU
IPC: H04W88/06
CPC classification number: H04L1/1809 , H04L47/34 , H04W72/1215 , H04W74/0816 , H04W88/06
Abstract: A wireless device comprises a first wireless transceiver, a second wireless transceiver, and control logic. The control logic is coupled to the first wireless transceiver and the second wireless transceiver. The control logic is configured to determine whether to transmit protection frames (e.g., clear-to-send 2 self frames) based upon sequence numbers in frames received from another device.
Abstract translation: 无线设备包括第一无线收发器，第二无线收发器和控制逻辑。 控制逻辑耦合到第一无线收发器和第二无线收发器。 控制逻辑被配置为基于从另一设备接收的帧中的序列号来确定是否发送保护帧（例如，清除发送2个自身帧）。
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