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公开(公告)号：US09030932B2
公开(公告)日：2015-05-12
申请号：US13593428
申请日：2012-08-23
IPC分类号： H04L12/413 , H04B3/54
CPC分类号： H04L12/413 , H04B3/54 , H04B3/542 , H04B2203/5408 , H04B2203/5433 , H04L69/02
摘要： Systems and methods for enhanced carrier sense multiple access (CSMA) protocols are described. In various implementations, these systems and methods may be applicable to Power Line Communications (PLC). For example, a method may include attempting to access a communications channel to transmit a frame after a backoff time proportional to a randomly generated number within a contention window (CW), the CW having an initial value carried over from a previous transmission of a different frame. Additionally or alternatively, some of techniques described herein may facilitate the spreading of the time over which devices attempt to transmit packets, thereby reducing the probability of collisions using, for example, Additive Decrease Multiplicative Increase (ADMI) mechanisms.
摘要翻译： 描述了用于增强载波侦听多路访问（CSMA）协议的系统和方法。 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，一种方法可以包括在与争用窗口（CW）中的随机生成的数字成比例的退避时间之后尝试访问通信信道以发送帧，所述CW具有从先前的不同的传输中携带的初始值 帧。 附加地或替代地，本文描述的技术中的一些技术可以有助于扩展这些设备尝试发送分组的时间，由此例如使用添加减少乘数增加（ADMI）机制来减少冲突的概率。
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公开(公告)号：US20130034110A1
公开(公告)日：2013-02-07
申请号：US13564440
申请日：2012-08-01
IPC分类号： H04B3/54
CPC分类号： H04B3/544 , H04B3/30 , H04B3/54 , H04B3/542 , H04B2203/5408 , H04H20/42 , H04L5/005 , H04L25/024
摘要： A method of Multi-Tone Mask (MTM) mode communications in a PLC network including a first router associated with a plurality of nodes. A super-frame spanning a time period is received within the subnetwork. The super-frame includes beacon frames in beacon slots within a beacon period, with each beacon frame in one of N TMs, a contention access period (CAP) including a plurality of CAP slots provided for each TM, and a poll-based contention-free period (CFP). The beacon frames provide time assignments within the super-frame including time assignments for the CAP slots and for the CFP, and TM assignments for the TMs in the CAP slots. One of nodes, another router in the subnetwork, or a router in another subnetwork transmits a broadcast frame on the PLC channel. The first router forwards the broadcast frame on the PLC channel in each of the N TMs within the time period.
摘要翻译： 一种在PLC网络中的多音调掩模（MTM）模式通信的方法，包括与多个节点相关联的第一路由器。 在子网内接收跨越时间段的超帧。 超帧包括在信标周期内的信标时隙中的信标帧，每个信标帧在N个TM之一中，竞争接入周期（CAP）包括为每个TM提供的多个CAP时隙，以及基于轮询的争用 - 免费期（CFP）。 信标帧提供超帧内的时间分配，包括CAP时隙的指定时间，以及CAP时隙中的CFP和TM分配。 节点之一，子网中的另一路由器或另一子网中的路由器在PLC信道上发送广播帧。 第一台路由器在该时间段内在每个N TM中的PLC信道上转发广播帧。
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公开(公告)号：US20120275326A1
公开(公告)日：2012-11-01
申请号：US13457590
申请日：2012-04-27
IPC分类号： H04L12/26
CPC分类号： H04W72/0453 , H04B3/544 , H04L41/0833 , H04W72/1231 , Y04S40/162
摘要： Systems and methods for designing, using, and/or implementing non-beacon network communications using frequency subbands are described. In various implementations, these systems and methods may be applicable to Power Line Communications (PLC). For example, a method may include transmitting a beacon request message over a given one of a plurality of frequency subbands, receiving a plurality of beacons in response to having transmitted the beacon request message, each of the plurality of beacons received over a respective one of the plurality of frequency subbands, and calculating a downlink quality report based, at least in part, upon the received beacons. The method may also include transmitting the downlink quality report over each of the plurality of frequency subbands and receiving a subband allocation command in response to having transmitted the downlink quality report, the subband allocation command indicating a downlink subband assignment and an uplink subband assignment.
摘要翻译： 描述了使用频率子带设计，使用和/或实现非信标网络通信的系统和方法。 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，一种方法可以包括在多个频率子带中的给定的一个频带上传送信标请求消息，响应于已经发送了信标请求消息来接收多个信标，多个信标中的每一个在 所述多个频率子带，并且至少部分地基于所接收的信标来计算下行链路质量报告。 该方法还可以包括：响应于已经发送下行链路质量报告，指示下行链路子带分配的子带分配命令和上行链路子带分配，在多个频率子带中的每一个上发送下行链路质量报告，并接收子带分配命令。
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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：US20120281717A1
公开(公告)日：2012-11-08
申请号：US13457638
申请日：2012-04-27
CPC分类号： H04B3/544 , H04B3/542 , H04B2203/5408 , H04B2203/5466 , H04B2203/5483 , H04B2203/5491 , H04L5/0044 , H04L5/0094 , H04L12/6418 , H04L25/0272
摘要： 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.
摘要翻译： 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
IPC分类号： H04B3/54
CPC分类号： H04B3/544 , H04L5/0007 , H04L5/0053 , H04L25/0272
摘要： 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.
摘要翻译： 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：US20130049939A1
公开(公告)日：2013-02-28
申请号：US13593428
申请日：2012-08-23
IPC分类号： G08C19/12
CPC分类号： H04L12/413 , H04B3/54 , H04B3/542 , H04B2203/5408 , H04B2203/5433 , H04L69/02
摘要： Systems and methods for enhanced carrier sense multiple access (CSMA) protocols are described. In various implementations, these systems and methods may be applicable to Power Line Communications (PLC). For example, a method may include attempting to access a communications channel to transmit a frame after a backoff time proportional to a randomly generated number within a contention window (CW), the CW having an initial value carried over from a previous transmission of a different frame. Additionally or alternatively, some of techniques described herein may facilitate the spreading of the time over which devices attempt to transmit packets, thereby reducing the probability of collisions using, for example, Additive Decrease Multiplicative Increase (ADMI) mechanisms.
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公开(公告)号：US11368190B2
公开(公告)日：2022-06-21
申请号：US13443123
申请日：2012-04-10
摘要： 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.
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公开(公告)号：US09325373B2
公开(公告)日：2016-04-26
申请号：US13564440
申请日：2012-08-01
CPC分类号： H04B3/544 , H04B3/30 , H04B3/54 , H04B3/542 , H04B2203/5408 , H04H20/42 , H04L5/005 , H04L25/024
摘要： A method of Multi-Tone Mask (MTM) mode communications in a PLC network including a first router associated with a plurality of nodes. A super-frame spanning a time period is received within the subnetwork. The super-frame includes beacon frames in beacon slots within a beacon period, with each beacon frame in one of N TMs, a contention access period (CAP) including a plurality of CAP slots provided for each TM, and a poll-based contention-free period (CFP). The beacon frames provide time assignments within the super-frame including time assignments for the CAP slots and for the CFP, and TM assignments for the TMs in the CAP slots. One of nodes, another router in the subnetwork, or a router in another subnetwork transmits a broadcast frame on the PLC channel. The first router forwards the broadcast frame on the PLC channel in each of the N TMs within the time period.
摘要翻译： 一种在PLC网络中的多音调掩模（MTM）模式通信的方法，包括与多个节点相关联的第一路由器。 在子网内接收跨越时间段的超帧。 超帧包括在信标周期内的信标时隙中的信标帧，每个信标帧在N个TM之一中，竞争接入周期（CAP）包括为每个TM提供的多个CAP时隙，以及基于轮询的争用 - 免费期（CFP）。 信标帧提供超帧内的时间分配，包括CAP时隙的指定时间，以及CAP时隙中的CFP和TM分配。 节点之一，子网中的另一路由器或另一子网中的路由器在PLC信道上发送广播帧。 第一台路由器在该时间段内在每个N TM中的PLC信道上转发广播帧。
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10.发明授权PHY payload over multiple tone masks using single tone mask PHY header information 有权使用单色调掩码PHY头信息的多个音调掩码上的PHY有效载荷公开(公告)号：US08958464B2
公开(公告)日：2015-02-17
申请号：US13493268
申请日：2012-06-11
CPC分类号： H04B3/542 , H04B2203/5408 , H04B2203/5445 , H04L5/0007 , H04L5/0037 , H04L5/0094 , H04L27/2602 , H04L27/2613 , H04L27/2666 , H04L69/22
摘要： A method of powerline communications (PLC) includes compiling a data frame for physical layer (PHY) by a first communications device at a first communications node on a powerline of a PLC network. The data frame includes a single tone PHY header portion and a data payload portion in a set of tones including at least one tone having a frequency different from a frequency of the single tone. The PHY header portion includes tone mask identification information identifying the set of tones. The first communications device transmits the data frame over the powerline to a second communications device at a second communications node on the powerline. The second communications device receives the data frame, and decodes the data payload using the tone mask identification information in the PHY header portion.
摘要翻译： 电力线通信（PLC）的方法包括在PLC网络的电力线上的第一通信节点处由第一通信设备编译用于物理层（PHY）的数据帧。 数据帧包括一组音调中的单音PHY头部部分和数据有效载荷部分，包括具有与单音频率不同的频率的至少一个音调。 PHY报头部分包括识别该组音调的色调掩码识别信息。 第一通信设备通过电力线将数据帧发送到电力线上的第二通信节点处的第二通信设备。 第二通信设备接收数据帧，并使用PHY报头部分中的色调掩码识别信息解码数据有效载荷。
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