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1. 发明申请

US20110255557A1 Coexistence of Prime, S-FSK and G3 Devices in Powerline Communications 有权
标题翻译： Prime，S-FSK和G3设备在电力线通信中的共存
公开(公告)号：US20110255557A1
公开(公告)日：2011-10-20
申请号：US13079858
申请日：2011-04-05
申请人： Badri N. Varadarajan , Anand G. Dabak , Il Han Kim , Donald P. Shaver
发明人： Badri N. Varadarajan , Anand G. Dabak , Il Han Kim , Donald P. Shaver
IPC分类号： H04J3/24
CPC分类号： H04L27/12 , H04B1/69 , H04B3/542 , H04L27/2601
摘要： Communication devices, such as base nodes and modems, that comply with two or more different standards operate on a shared communication channel. To avoid mutual interference, a base node operating under a first standard reserves time using a contention free period designation. The base node allows devices operating under a second standard to communicate during the reserved time by not assigning the contention free period to another device operating under the first standard. Alternatively, a device using the first standard may avoid interference from transmissions generated under the second standard by modifying data packets prior to transmission. A prefix corresponding to a preamble in the second standard is added to the beginning of the data packet created under the first standard. Devices operating under the second standard observe the prefix and recognize that the channel is active. The second-standard devices backoff from transmission thereby minimizing interference.
摘要翻译：符合两个或多个不同标准的通信设备，例如基础节点和调制解调器，在共享通信信道上运行。为了避免相互干扰，基站在第一标准预留时间内使用无竞争周期指定运行。基站节点允许在预留时间内通过不将无竞争周期分配给在第一标准下运行的另一设备来在第二标准下运行的设备进行通信。或者，使用第一标准的设备可以通过在传输之前修改数据分组来避免在第二标准下产生的传输的干扰。将与第二标准中的前导码相对应的前缀添加到在第一标准下创建的数据包的开头。在第二个标准下运行的设备观察前缀并识别该通道是活动的。第二标准设备从传输中退出，从而最小化干扰。

2. 发明授权

US08743908B2 Coexistence of prime, S-FSK and G3 devices in powerline communications 有权
标题翻译：电力线通信中主要，S-FSK和G3设备的共存
公开(公告)号：US08743908B2
公开(公告)日：2014-06-03
申请号：US13079858
申请日：2011-04-05
申请人： Badri N. Varadarajan , Anand G. Dabak , Il Han Kim , Donald P. Shaver
发明人： Badri N. Varadarajan , Anand G. Dabak , Il Han Kim , Donald P. Shaver
IPC分类号： H04J3/24
CPC分类号： H04L27/12 , H04B1/69 , H04B3/542 , H04L27/2601
摘要： Communication devices, such as base nodes and modems, that comply with two or more different standards operate on a shared communication channel. To avoid mutual interference, a base node operating under a first standard reserves time using a contention free period designation. The base node allows devices operating under a second standard to communicate during the reserved time by not assigning the contention free period to another device operating under the first standard. Alternatively, a device using the first standard may avoid interference from transmissions generated under the second standard by modifying data packets prior to transmission. A prefix corresponding to a preamble in the second standard is added to the beginning of the data packet created under the first standard. Devices operating under the second standard observe the prefix and recognize that the channel is active. The second-standard devices backoff from transmission thereby minimizing interference.
摘要翻译：符合两个或多个不同标准的通信设备，例如基础节点和调制解调器，在共享通信信道上运行。为了避免相互干扰，基站在第一标准预留时间内使用无竞争周期指定运行。基站节点允许在预留时间内通过不将无竞争周期分配给在第一标准下运行的另一设备来在第二标准下运行的设备进行通信。或者，使用第一标准的设备可以通过在传输之前修改数据分组来避免在第二标准下产生的传输的干扰。将与第二标准中的前导码相对应的前缀添加到在第一标准下创建的数据包的开头。在第二个标准下运行的设备观察前缀并识别该通道是活动的。第二标准设备从传输中退出，从而最小化干扰。

3. 发明申请

US20120236876A1 MAC PROTOCOLS WITH SUBBANDING 有权
标题翻译： MAC协议与SUBBANDING
公开(公告)号：US20120236876A1
公开(公告)日：2012-09-20
申请号：US13408521
申请日：2012-02-29
申请人： Kumaran Vijayasankar , Shu Du , Anand G. Dabak , Badri N. Varadarajan , Il Han Kim , Xiaolin Lu
发明人： Kumaran Vijayasankar , Shu Du , Anand G. Dabak , Badri N. Varadarajan , Il Han Kim , Xiaolin Lu
IPC分类号： H04J3/16
CPC分类号： H04L12/413 , H04B3/54 , H04B3/56 , H04B2203/5416 , H04B2203/5466 , H04L12/2838 , H04L2012/2843
摘要： 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.
摘要翻译：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。

4. 发明申请

US20120134395A1 Power Line Communications (PLC) Across Different Voltage Domains Using Multiple Frequency Subbands 审中-公开
标题翻译：电力线通信（PLC）跨越不同电压域使用多个频率子带
公开(公告)号：US20120134395A1
公开(公告)日：2012-05-31
申请号：US13300741
申请日：2011-11-21
申请人： Badri N. Varadarajan , Anand G. Dabak , Il Han Kim , Xiaolin Lu
发明人： Badri N. Varadarajan , Anand G. Dabak , Il Han Kim , Xiaolin Lu
IPC分类号： H04B3/54 , H04B17/00 , H04B1/38
CPC分类号： H04B3/542 , H04B2203/5408 , H04B2203/5416 , H04B2203/542
摘要： Systems and methods for implementing power line communications (PLC) across different voltage domains using multiple frequency subbands are described. From an end node's perspective (e.g., a PLC device), a method may include scanning a plurality of downlink subbands usable by a base node (e.g., a PLC router, etc.) to communicate with one or more PLC devices (e.g., other end nodes) from a medium voltage (MV) to a low voltage (LV) power line, and transmitting association request(s) to the base node that select and/or allow the base node to select one or more downlink subbands for use in subsequent communications. From the base node's perspective, the method may include selecting one or more of a plurality of uplink subbands for use in subsequent communications based on the received association request(s). In various implementations, the selection of downlink and/or uplink subbands may be based on signal-to-noise ratio (SNR) values and/or congestion indicators.
摘要翻译：描述了使用多个频率子带在不同电压域之间实现电力线通信（PLC）的系统和方法。从终端节点的观点（例如，PLC设备），一种方法可以包括扫描由基本节点（例如，PLC路由器等）使用的多个下行链路子带，以与一个或多个PLC设备（例如，其他终端节点）从中压（MV）到低电压（LV）电力线路，并且向基站节点发送关联请求，所述基站节点选择和/或允许基站节点选择一个或多个下行链路子带用于后续通讯。从基本节点的观点来看，该方法可以包括基于所接收到的关联请求来选择多个上行链路子带中的一个或多个以用于后续通信。在各种实现中，下行链路和/或上行链路子带的选择可以基于信噪比（SNR）值和/或拥塞指示符。

5. 发明申请

US20110026621A1 OFDM TRANSMISSION METHODS IN THREE PHASE MODES 有权
标题翻译： OFDM传输方法在三相模式中
公开(公告)号：US20110026621A1
公开(公告)日：2011-02-03
申请号：US12839315
申请日：2010-07-19
申请人： Il Han Kim , Badri N. Varadarajan , Anand G. Dabak
发明人： Il Han Kim , Badri N. Varadarajan , Anand G. Dabak
IPC分类号： H04K1/10 , H04L27/00
CPC分类号： H04B3/542 , H04B3/56 , H04B2203/5416 , H04B2203/542 , H04B2203/5466 , H04L5/0023 , H04L25/0204 , H04L25/0248 , H04L25/0276 , H04L27/2626 , H04L27/2647
摘要： Systems and methods for power line transmission are disclosed in which transmitters and receivers are connected to one or more phases of the power line. At least one symbol stream to be transmitted on the power line network is generated. The at least one symbol stream is scaled using a weight vector to generate a plurality of scaled symbol streams. The weight vector comprises a plurality of weights, each corresponding to a phase of the power line network. Each of the scaled symbol streams are transmitted on a corresponding phase of the power line network. A zero crossing detector identifies phase information for a receiver. A concentrator adapts signals to be sent to the receiver based upon the phase associated with the receiver.
摘要翻译：公开了用于电力线传输的系统和方法，其中发射器和接收器连接到电力线的一个或多个相。生成要在电力线网络上发送的至少一个符号流。使用权重向量来缩放至少一个符号流以生成多个缩放的符号流。权重向量包括多个权重，每个权重对应于电力线网络的相位。每个缩放的符号流在电力线网络的相应相位上传输。零交叉检测器识别接收机的相位信息。集中器根据与接收器相关的相位来调整要发送到接收机的信号。

6. 发明授权

US09000897B2 Systems and methods for implementing application profiles and device classes in power line communication (PLC) environments 有权
标题翻译：在电力线通信（PLC）环境中实现应用配置文件和设备类的系统和方法
公开(公告)号：US09000897B2
公开(公告)日：2015-04-07
申请号：US13230419
申请日：2011-09-12
申请人： Il Han Kim , Anand G. Dabak , Badri N. Varadarajan
发明人： Il Han Kim , Anand G. Dabak , Badri N. Varadarajan
IPC分类号： H04B1/38 , H04B3/54 , H04B17/00
CPC分类号： H04B3/542 , H04B2203/5408 , H04B2203/5416 , H04L47/78
摘要： Systems and methods for application profiles and device classes in power line communications (PLCs) are described. In some embodiments, a PLC device may include a processor and a memory coupled to the processor. The memory may be configured to store program instructions, which may be executable by the processor to cause the PLC device to communicate with a higher-level PLC apparatus over a power line using a frequency band. The frequency band may be selected based upon an application profile and/or a device class associated with the PLC device. In some implementations, the higher-level PLC apparatus may include a PLC gateway or a data concentrator, and the PLC device may include a PLC modem or the like. Examples of application profiles include access communications, in-premises connectivity, AC charging, and/or DC charging. Device classes may represent a minimum communication data rate and/or an operating frequency band restriction of the PLC device.
摘要翻译：描述了电力线通信（PLC）中的应用配置文件和设备类的系统和方法。在一些实施例中，PLC设备可以包括处理器和耦合到处理器的存储器。存储器可以被配置为存储可由处理器执行的程序指令，以使PLC设备通过使用频带的电力线路与较高级别的PLC设备进行通信。可以基于与PLC设备相关联的应用简档和/或设备类别来选择频带。在一些实现中，较高级的PLC设备可以包括PLC网关或数据集中器，并且PLC设备可以包括PLC调制解调器等。应用简档的示例包括接入通信，室内连接，AC充电和/或DC充电。设备类可以表示PLC设备的最小通信数据速率和/或操作频带限制。

7. 发明授权

US08923416B2 Symbol-level repetition coding in power line communications 有权
标题翻译：电力线通信中的符号级重复编码
公开(公告)号：US08923416B2
公开(公告)日：2014-12-30
申请号：US13267300
申请日：2011-10-06
申请人： Il Han Kim , Badri N. Varadarajan , Anand G. Dabak
发明人： Il Han Kim , Badri N. Varadarajan , Anand G. Dabak
IPC分类号： H04B3/00 , H03H7/30 , H04W4/00 , H04B3/54 , H04L1/08 , H04L1/00
CPC分类号： H04L1/08 , H04B3/54 , H04B3/546 , H04B2203/5408 , H04B2203/5425 , H04B2203/5433 , H04B2203/5466 , H04L1/0059 , H04L1/0065
摘要： Systems and methods for implementing symbol-level repetition coding in power line communications (PLC) are described. In some embodiments, these systems and methods may provide reliable communication in severe channel environments of PLC networks, at least in part, by changing the forward error correction (FEC) used by various devices operating within current PLC systems. For example, a method may include receiving a PLC signal and applying convolutional encoding to the received signal, the convolutional encoding producing an encoded signal. The method may also include performing a subcarrier modulation operation upon the encoded signal, the subcarrier modulation operation producing a modulated signal. The method may further include applying symbol-level repetition coding to the modulated signal, the symbol-level repetition coding producing a repetitious signal. In some cases, one or more distinct repetition patterns may be applied to different symbols or portions thereof. The repetitious signal may then be transmitted over a power line.
摘要翻译：描述了在电力线通信（PLC）中实现符号级重复编码的系统和方法。在一些实施例中，这些系统和方法可以至少部分地通过改变在当前PLC系统中操作的各种设备使用的前向纠错（FEC）来在PLC网络的严酷信道环境中提供可靠的通信。例如，一种方法可以包括接收PLC信号并对接收到的信号应用卷积编码，卷积编码产生编码信号。该方法还可以包括对编码信号执行子载波调制操作，产生调制信号的子载波调制操作。该方法还可以包括对调制信号应用符号级重复编码，产生符号级重复编码产生重复信号。在一些情况下，可以将一个或多个不同的重复图案应用于不同的符号或其部分。然后可以通过电力线传输重复信号。

8. 发明授权

US08902930B2 Hybrid communication networks 有权
标题翻译：混合通信网络
公开(公告)号：US08902930B2
公开(公告)日：2014-12-02
申请号：US13457612
申请日：2012-04-27
申请人： Kumaran Vijayasankar , Ramanuja Vedantham , Anand G. Dabak , Badri N. Varadarajan , Il Han Kim , Xiaolin Lu
发明人： Kumaran Vijayasankar , Ramanuja Vedantham , Anand G. Dabak , Badri N. Varadarajan , Il Han Kim , Xiaolin Lu
IPC分类号： H04L12/26 , H04M11/04 , H04B3/54 , H04L5/00 , H04L25/02
CPC分类号： H04L5/0048 , H04B3/54 , H04B3/542 , H04B2203/5408 , H04B2203/5466 , H04B2203/5483 , H04B2203/5491 , H04L5/0044 , H04L5/0055 , H04L5/0078 , H04L5/0094 , H04L25/0272
摘要： 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.
摘要翻译：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级到第二级LV器件通信，而不是MV到一级LV连接。

9. 发明申请

US20120281716A1 Hybrid Communication Networks 有权
标题翻译：混合通信网络
公开(公告)号：US20120281716A1
公开(公告)日：2012-11-08
申请号：US13457612
申请日：2012-04-27
申请人： Kumaran Vijayasankar , Ramanuja Vedantham , Anand G. Dabak , Badri N. Varadarajan , Il Han Kim , Xiaolin Lu
发明人： Kumaran Vijayasankar , Ramanuja Vedantham , Anand G. Dabak , Badri N. Varadarajan , Il Han Kim , Xiaolin Lu
IPC分类号： H04J4/00 , H04B3/54 , H04J1/00
CPC分类号： H04L5/0048 , H04B3/54 , H04B3/542 , H04B2203/5408 , H04B2203/5466 , H04B2203/5483 , H04B2203/5491 , H04L5/0044 , H04L5/0055 , H04L5/0078 , H04L5/0094 , H04L25/0272
摘要： 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.
摘要翻译：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。

10. 发明申请

US20120189042A1 Building, Transmitting, and Receiving Robust Protocol Data Units in Power Line Communications 审中-公开
标题翻译：建立，传输和接收电力线通信中的稳健协议数据单元
公开(公告)号：US20120189042A1
公开(公告)日：2012-07-26
申请号：US13347366
申请日：2012-01-10
申请人： Badri N. Varadarajan , Il Han Kim , Shu Du , Anand G. Dabak
发明人： Badri N. Varadarajan , Il Han Kim , Shu Du , Anand G. Dabak
IPC分类号： H04B3/58 , H04B1/38
CPC分类号： H04B3/542 , H04B2203/5433 , H04B2203/5466
摘要： Systems and methods for building, transmitting, and receiving robust protocol data units (PDUs) in power line communications (PLC) are described. In some embodiments, a method may include receiving a PDU, applying bit-level repetition to at least a portion of the PDU to create a repeated portion, block interleaving two or more symbols corresponding to the repeated portion to create a block interleaved portion, inserting pilot tones in the block interleaved portion, and modulating each tone in the block interleaved portion with respect to a nearest one of the inserted pilot tones to create a robust PDU. In some implementations, the robust PDU may include a first header portion carrying information encoded using a first version of a PLC protocol (e.g., a legacy standard) and a second header portion carrying information encoded using a second version of the PLC protocol (e.g., a newer version of the same standard).
摘要翻译：描述了在电力线通信（PLC）中构建，发送和接收鲁棒协议数据单元（PDU）的系统和方法。在一些实施例中，一种方法可以包括接收PDU，将位级重复应用于PDU的至少一部分以创建重复部分，块交织对应于重复部分的两个或多个符号以创建块交错部分，插入在块交织部分中的导频音调，以及相对于所插入的导频音中的最接近的导频音调调制块交织部分中的每个音调，以创建鲁棒的PDU。在一些实现中，鲁棒PDU可以包括承载使用PLC协议的第一版本（例如，传统标准）编码的信息的第一报头部分和携带使用第二版本的PLC协议编码的信息的第二报头部分（例如，较新版本的同一标准）。

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