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公开(公告)号：US08964786B2
公开(公告)日：2015-02-24
申请号：US13435862
申请日：2012-03-30
申请人： Kumaran Vijayasankar , Shu Du , Anand Dabak , Badri Varadarajan , Il Han Kim , Xiaolin Lu
发明人： Kumaran Vijayasankar , Shu Du , Anand Dabak , Badri Varadarajan , Il Han Kim , Xiaolin Lu
CPC分类号： H04B3/542 , H04L5/0007 , H04L5/0048 , H04L5/0053 , H04L5/0073
摘要： Systems and methods for designing, using, and/or implementing communications 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 identifying one of a plurality of orthogonal superframes. The identified superframe may include beacon slots and contention access period (CAP) slots. The beacon slots may follow a sequence of two or more frequency subbands, and the CAP slots may follow the same sequence of two or more frequency subbands. Also, the sequence of two or more frequency subbands may be distinct from other sequences of two or more frequency subbands followed by other beacon slots and CAP slots within others of the plurality of available superframes. The method may then include communicating with another device using the identified superframe.
摘要翻译： 描述了在启用信标的网络中设计，使用和/或实现通信的系统和方法。 在各种实现中，这些系统和方法可以应用于电力线通信（PLC）。 例如，方法可以包括识别多个正交超帧中的一个。 所识别的超帧可以包括信标时隙和竞争接入时隙（CAP）时隙。 信标时隙可以遵循两个或更多个频率子带的序列，并且CAP时隙可以遵循两个或更多个频率子带的相同序列。 而且，两个或多个频率子带的序列可以与两个或多个频率子带的其他序列不同，后面是多个可用超帧中的其他信标时隙和CAP时隙。 该方法然后可以包括使用所识别的超帧与另一设备进行通信。
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公开(公告)号：US20120257639A1
公开(公告)日：2012-10-11
申请号：US13435862
申请日：2012-03-30
申请人： Kumaran Vijayasankar , Shu Du , Anand Dabak , Badri Varadarajan , Il Han Kim , Xiaolin Lu
发明人： Kumaran Vijayasankar , Shu Du , Anand Dabak , Badri Varadarajan , Il Han Kim , Xiaolin Lu
CPC分类号： H04B3/542 , H04L5/0007 , H04L5/0048 , H04L5/0053 , H04L5/0073
摘要： Systems and methods for designing, using, and/or implementing communications 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 identifying one of a plurality of orthogonal superframes. The identified superframe may include beacon slots and contention access period (CAP) slots. The beacon slots may follow a sequence of two or more frequency subbands, and the CAP slots may follow the same sequence of two or more frequency subbands. Also, the sequence of two or more frequency subbands may be distinct from other sequences of two or more frequency subbands followed by other beacon slots and CAP slots within others of the plurality of available superframes. The method may then include communicating with another device using the identified superframe.
摘要翻译： 描述了在启用信标的网络中设计，使用和/或实现通信的系统和方法。 在各种实现中，这些系统和方法可以应用于电力线通信（PLC）。 例如，方法可以包括识别多个正交超帧中的一个。 所识别的超帧可以包括信标时隙和竞争接入时隙（CAP）时隙。 信标时隙可以遵循两个或更多个频率子带的序列，并且CAP时隙可以遵循两个或更多个频率子带的相同序列。 而且，两个或多个频率子带的序列可以与两个或多个频率子带的其他序列不同，后面是多个可用超帧中的其他信标时隙和CAP时隙。 该方法然后可以包括使用所识别的超帧与另一设备进行通信。
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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。
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公开(公告)号：US09008124B2
公开(公告)日：2015-04-14
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： H04B3/54 , H04L12/413 , H04L12/28 , H04B3/56
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。
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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
申请人： Ramanuja Vedantham , Gang Xu , Kumaran Vijayasankar , Anand G. Dabak , Tarkesh Pande , Il Han Kim , Xiaolin Lu
发明人： Ramanuja Vedantham , Gang Xu , Kumaran Vijayasankar , Anand G. Dabak , Tarkesh Pande , Il Han Kim , Xiaolin Lu
CPC分类号： G06F11/1004 , H03M13/09
摘要： 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.
摘要翻译： 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：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
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。
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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
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。
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公开(公告)号：US08929398B2
公开(公告)日：2015-01-06
申请号：US13528667
申请日：2012-06-20
申请人： Gang Xu , Ramanuja Vedantham , Kumaran Vijayasankar , Anand G. Dabak , Tarkesh Pande , Il Han Kim , Xiaolin Lu
发明人： Gang Xu , Ramanuja Vedantham , Kumaran Vijayasankar , Anand G. Dabak , Tarkesh Pande , Il Han Kim , Xiaolin Lu
CPC分类号： H04L69/22 , H04B3/54 , H04B3/542 , H04B2203/5408
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US20120201155A1
公开(公告)日：2012-08-09
申请号：US13363391
申请日：2012-02-01
申请人： Shu Du , Anand G. Dabak , Xiaolin Lu , Il Han Kim
发明人： Shu Du , Anand G. Dabak , Xiaolin Lu , Il Han Kim
CPC分类号： H04B3/54 , H04B3/544 , H04B2203/5408 , H04B2203/5466 , H04B2203/5495 , H04L7/00 , H04L12/10 , H04L43/0823
摘要： Systems and methods for channel selection in power line communications (PLC) are described. In some embodiments, a method may include defining a plurality of frames, each frame having a plurality of time slots. The method may also include assembling a pair of beacon and bandscan packets within each of time slot of each frame. The method may further include sequentially transmitting each of the frames over a corresponding one of a plurality of different frequency bands. In some implementations, each bandscan packet may include a slot index indicating a position of its time slot within its respective frame and/or a band index indicating one of the plurality of different frequency bands. In response to having transmitted the plurality of frames, the method may include receiving one or more packets indicating a selection of one or more of the plurality of different frequency bands to be used in subsequent communications.
摘要翻译： 描述了电力线通信（PLC）中通道选择的系统和方法。 在一些实施例中，方法可以包括定义多个帧，每个帧具有多个时隙。 该方法还可以包括在每帧的每个时隙内组合一对信标和带扫描分组。 该方法还可以包括在多个不同频带中的相应一个上顺序发送每个帧。 在一些实现中，每个带扫描分组可以包括指示其在其各自帧内的时隙的位置的时隙索引和/或指示多个不同频带之一的频带索引。 响应于已经发送了多个帧，该方法可以包括接收一个或多个分组，指示将在后续通信中使用的多个不同频带中的一个或多个的选择。
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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
IPC分类号： H04L25/00
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。
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