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1. 发明授权

US08958356B2 Routing protocols for power line communications (PLC) 有权
标题翻译：电力线通信路由协议（PLC）
公开(公告)号：US08958356B2
公开(公告)日：2015-02-17
申请号：US13300779
申请日：2011-11-21
申请人： Ramachandran Ananthakrishnan , Shu Du , Xiaolin Lu
发明人： Ramachandran Ananthakrishnan , Shu Du , Xiaolin Lu
IPC分类号： H04B7/14 , H04B3/54 , H04L12/721 , H04W40/28
CPC分类号： H04L45/54 , H04B3/54 , H04B3/542 , H04B2203/5445 , H04L45/12 , H04L45/34 , H04W40/28
摘要： Systems and methods for routing protocols for power line communications (PLC) are described. In some embodiments, a method may include transmitting a one-hop broadcast request message to a plurality of PLC devices in a mesh network and receiving a response from each of the devices. The method may also include selecting one of the devices as a bootstrapping agent, sending a join request to a bootstrapping server through the bootstrapping agent, and, in response to successfully joining the network, setting the bootstrapping agent as a next hop toward a bootstrapping server. In another embodiment, a method may include maintaining a routing table for a plurality of PLC devices in a mesh network, receiving a join request from a PLC device, accepting the request, and updating the table to add a record corresponding to the PLC device; the record setting the bootstrapping agent as a penultimate hop toward the PLC device.
摘要翻译：描述了用于电力线通信（PLC）的路由协议的系统和方法。在一些实施例中，一种方法可以包括向网状网络中的多个PLC设备发送一跳广播请求消息并从每个设备接收响应。该方法还可以包括选择一个设备作为引导代理，通过引导代理向引导服务器发送加入请求，并且响应于成功加入网络，将引导代理设置为向引导服务器的下一跳。在另一个实施例中，一种方法可以包括维护网状网络中的多个PLC设备的路由表，从PLC设备接收连接请求，接受该请求，并更新该表以添加对应于该PLC设备的记录; 记录将引导代理设置为PLC设备的倒数第二跳。

2. 发明申请

US20120182881A1 Routing Protocols for Power Line Communications (PLC) 有权
标题翻译：电力线通信路由协议（PLC）
公开(公告)号：US20120182881A1
公开(公告)日：2012-07-19
申请号：US13300779
申请日：2011-11-21
申请人： Ramachandran Ananthakrishnan , Shu Du , Xiaolin Lu
发明人： Ramachandran Ananthakrishnan , Shu Du , Xiaolin Lu
IPC分类号： H04L12/28 , H04L12/26 , H04L12/24
CPC分类号： H04L45/54 , H04B3/54 , H04B3/542 , H04B2203/5445 , H04L45/12 , H04L45/34 , H04W40/28
摘要： Systems and methods for routing protocols for power line communications (PLC) are described. In some embodiments, a method may include transmitting a one-hop broadcast request message to a plurality of PLC devices in a mesh network and receiving a response from each of the devices. The method may also include selecting one of the devices as a bootstrapping agent, sending a join request to a bootstrapping server through the bootstrapping agent, and, in response to successfully joining the network, setting the bootstrapping agent as a next hop toward a bootstrapping server. In another embodiment, a method may include maintaining a routing table for a plurality of PLC devices in a mesh network, receiving a join request from a PLC device, accepting the request, and updating the table to add a record corresponding to the PLC device; the record setting the bootstrapping agent as a penultimate hop toward the PLC device.
摘要翻译：描述了用于电力线通信（PLC）的路由协议的系统和方法。在一些实施例中，一种方法可以包括向网状网络中的多个PLC设备发送一跳广播请求消息并从每个设备接收响应。该方法还可以包括选择一个设备作为引导代理，通过引导代理向引导服务器发送加入请求，并且响应于成功加入网络，将引导代理设置为向引导服务器的下一跳。在另一个实施例中，一种方法可以包括维护网状网络中的多个PLC设备的路由表，从PLC设备接收连接请求，接受该请求，并更新该表以添加对应于该PLC设备的记录; 记录将引导代理设置为PLC设备的倒数第二跳。

3. 发明授权

US08711873B2 Carrier sense multiple access (CSMA) protocols for power line communications (PLC) 有权
标题翻译：电力线通信（PLC）的载波侦听多路访问（CSMA）协议
公开(公告)号：US08711873B2
公开(公告)日：2014-04-29
申请号：US13300812
申请日：2011-11-21
申请人： Shu Du , Robert Liang , Xiaolin Lu
发明人： Shu Du , Robert Liang , Xiaolin Lu
IPC分类号： H04L12/413
CPC分类号： H04L12/413 , H04B3/544 , H04L5/0096
摘要： Systems and methods for carrier sense multiple access (CSMA) protocols for power line communications (PLC) are described. In some embodiments, a method may include performing a virtual carrier sensing operation and, in response to the virtual carrier sensing operation indicating that a communication channel is idle, calculating a contention window. The method may also include performing a physical carrier sensing operation subsequent to the virtual carrier sensing operation, the physical carrier sensing operation based, at least in part, upon the contention window. In response to the physical carrier sensing operation indicating that the communication channel is idle, the method may then include transmitting data over the channel. In other embodiments, another method may include determining that a data transmission is a unicast transmission and that an acknowledgement message has not been received. The method may further include incrementing a backoff parameter and repeating one or more carrier sense operations.
摘要翻译：描述了用于电力线通信（PLC）的载波侦听多路访问（CSMA）协议的系统和方法。在一些实施例中，方法可以包括执行虚拟载波侦听操作，并且响应于指示通信信道空闲的虚拟载波侦听操作，计算竞争窗口。该方法还可以包括在虚拟载波感测操作之后执行物理载波感测操作，至少部分地基于竞争窗口进行物理载波感测操作。响应于指示通信信道空闲的物理载波感测操作，该方法然后可以包括通过信道发送数据。在其他实施例中，另一种方法可以包括确定数据传输是单播传输，还没有接收到确认消息。该方法还可以包括增加退避参数并重复一个或多个载波检测操作。

4. 发明申请

US20120257639A1 Communications in Beacon-Enabled Networks 有权
标题翻译：信标网络中的通信
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
IPC分类号： H04J4/00 , H04J3/00 , H04B3/54
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。

5. 发明授权

US08995461B2 Channel selection in power line communications 有权
标题翻译：电力线通信中的通道选择
公开(公告)号：US08995461B2
公开(公告)日：2015-03-31
申请号：US13363391
申请日：2012-02-01
申请人： Shu Du , Anand G. Dabak , Xiaolin Lu , II Han Kim
发明人： Shu Du , Anand G. Dabak , Xiaolin Lu , II Han Kim
IPC分类号： H04B3/54 , H04L12/10
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。

6. 发明授权

US08964786B2 Communications in beacon-enabled networks 有权
标题翻译：信标启用网络中的通信
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
IPC分类号： H04J4/00 , H04B3/54 , H04L5/00
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。

7. 发明申请

US20120147899A1 Media Access Control (MAC) Layer for Power Line Communications (PLC) 审中-公开
标题翻译：用于电力线通信（PLC）的媒体访问控制（MAC）层
公开(公告)号：US20120147899A1
公开(公告)日：2012-06-14
申请号：US13300850
申请日：2011-11-21
申请人： Shu Du , Xiaolin Lu , Badri N. Varadarajan
发明人： Shu Du , Xiaolin Lu , Badri N. Varadarajan
IPC分类号： H04L12/413
CPC分类号： H04L12/413 , H04B3/542 , H04B3/544 , H04B2203/5433
摘要： Systems and methods for a media access control (MAC) layer for power line communications (PLC) are described. In some embodiments, a method may include receiving packets for transmission, each packet associated with a priority code, each priority code unrelated to its corresponding packet's time or order of arrival. The method may also include transmitting a first subset of packets having priority codes higher than priority codes in a second subset, and buffering the packets in the second subset for later transmission. Another method may include identifying a link quality indicator (LQI) associated neighboring service nodes, selecting one of the service nodes with highest LQI, and transmitting a promotion needed packet data unit to the selected service node. Yet another method may include communicating an Internet protocol (IP)-based message to a PLC device that excludes mesh header information, fragmentation header information, and/or the IP address of the PLC device.
摘要翻译：描述了用于电力线通信（PLC）的媒体访问控制（MAC）层的系统和方法。在一些实施例中，一种方法可以包括接收用于传输的分组，与优先级代码相关联的每个分组，与其对应分组的时间或到达顺序无关的每个优先级代码。该方法还可以包括在第二子集中发送具有高于优先级码的优先级码的分组的第一子集，以及缓冲第二子集中的分组用于稍后传输。另一方法可以包括识别相关联的相邻服务节点的链路质量指示符（LQI），选择具有最高LQI的服务节点中的一个，以及将所需的分组数据单元发送到所选择的服务节点。另一种方法可以包括将基于因特网协议（IP）的消息传送到PLC设备，该PLC设备不包括网络报头信息，分段报头信息和/或PLC设备的IP地址。

8. 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。

9. 发明申请

US20120201155A1 Channel Selection in Power Line Communications 有权
标题翻译：电力线通信中的通道选择
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
IPC分类号： H04L12/26 , H04L12/43
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。

10. 发明授权

US09008124B2 MAC protocols with subbanding 有权
标题翻译： MAC协议带分区
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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