-
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。
-
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。
-
公开(公告)号：US20120236875A1
公开(公告)日：2012-09-20
申请号：US13421593
申请日：2012-03-15
CPC分类号： H04L12/2838 , H04B3/54 , H04B3/56 , H04B2203/5416 , H04B2203/5466 , H04L12/413 , H04L2012/2843
摘要： Systems and methods for designing, using, and/or implementing slotted channel access techniques in network communications are described. In some embodiments, a method may include selecting one of a plurality of time slots within a contention access period (CAP), each of the plurality of time slots having a predetermined duration, and transmitting a packet during the selected time slot. For example, the time slot may be selected randomly or based on a round-robin algorithm. In some implementations, the duration of each of the plurality of time slots may correspond and/or be equal to: (a) a duration of a data packet of maximum size, (b) a sum of durations of a request-to-send packet, an interframe space, and a clear-to-send packet, and/or (c) a duration of a guaranteed time slot (GTS) or contention free period (CFP) request packet, as prescribed by a given communication protocol or standard.
摘要翻译： 描述了在网络通信中设计，使用和/或实现时隙信道接入技术的系统和方法。 在一些实施例中，一种方法可以包括选择争用访问周期（CAP）中的多个时隙中的一个，多个时隙中的每个时隙具有预定的持续时间，并且在所选择的时隙期间发送分组。 例如，可以随机地或基于循环算法选择时隙。 在一些实现中，多个时隙中的每一个的持续时间可以对应于和/或等于：（a）最大大小的数据分组的持续时间，（b）请求发送的持续时间之和 分组，帧间间隔和清除发送分组，和/或（c）由给定通信协议或标准规定的保证时隙（GTS）或无争用周期（CFP）请求分组的持续时间 。
-
公开(公告)号：US08670458B2
公开(公告)日：2014-03-11
申请号：US13421593
申请日：2012-03-15
CPC分类号： H04L12/2838 , H04B3/54 , H04B3/56 , H04B2203/5416 , H04B2203/5466 , H04L12/413 , H04L2012/2843
摘要： Systems and methods for designing, using, and/or implementing slotted channel access techniques in network communications are described. In some embodiments, a method may include selecting one of a plurality of time slots within a contention access period (CAP), each of the plurality of time slots having a predetermined duration, and transmitting a packet during the selected time slot. For example, the time slot may be selected randomly or based on a round-robin algorithm. In some implementations, the duration of each of the plurality of time slots may correspond and/or be equal to: (a) a duration of a data packet of maximum size, (b) a sum of durations of a request-to-send packet, an interframe space, and a clear-to-send packet, and/or (c) a duration of a guaranteed time slot (GTS) or contention free period (CFP) request packet, as prescribed by a given communication protocol or standard.
摘要翻译： 描述了在网络通信中设计，使用和/或实现时隙信道接入技术的系统和方法。 在一些实施例中，一种方法可以包括选择争用访问周期（CAP）中的多个时隙中的一个，多个时隙中的每个时隙具有预定的持续时间，并且在所选择的时隙期间发送分组。 例如，可以随机地或基于循环算法选择时隙。 在一些实现中，多个时隙中的每一个的持续时间可以对应于和/或等于：（a）最大大小的数据分组的持续时间，（b）请求发送的持续时间之和 分组，帧间间隔和清除发送分组，和/或（c）由给定通信协议或标准规定的保证时隙（GTS）或无争用周期（CFP）请求分组的持续时间 。
-
5.发明申请Building, Transmitting, and Receiving Robust Protocol Data Units in Power Line Communications 审中-公开建立，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
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）。
-
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。
-
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。
-
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。
-
9.发明申请Media Access Control (MAC) Layer for Power Line Communications (PLC) 审中-公开用于电力线通信（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。
-
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
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。
-
-
-
-
-
-
-
-
-
搜索结果
35 条记录 (耗时 0.032 秒)