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公开(公告)号：US09319962B2
公开(公告)日：2016-04-19
申请号：US14043974
申请日：2013-10-02
IPC分类号： H04W40/04 , H04W72/04 , H04W40/34 , H04W40/38 , H04L12/721 , H04L12/707 , H04L12/703
CPC分类号： H04W40/04 , H04L45/12 , H04L45/22 , H04L45/28 , H04W40/34 , H04W40/38 , H04W72/0446 , Y02D70/144 , Y02D70/32
摘要： In one embodiment, an initial path is established in a wireless deterministic network between a source and a destination through one or more intermediate nodes, which are typically informed of a required metric between the source and the destination for communicating a packet. The initial path is locally (e.g., without contacting a path computation engine) reconfigured to bypass at least one of the intermediate nodes creating a new path, with the new path meeting the requirement(s) of the metric. Note, “locally reconfiguring” refers to the network nodes themselves determining a replacement path without reliance on a path computation engine or other entity (e.g., network management system, operating support system) in determining the replacement path. In one embodiment, a network node not on the initial path replaces a node on the initial path while using the same receive and send timeslots used in the initial path.
摘要翻译： 在一个实施例中，通过一个或多个中间节点在源和目的地之间的无线确定性网络中建立初始路径，所述中间节点通常被通知源和目的地之间用于传送分组的所需度量。 初始路径在本地（例如，不接触路径计算引擎）被重新配置为绕过创建新路径的至少一个中间节点，新路径满足度量的要求。 注意，“本地重新配置”是指网络节点本身在不依赖路径计算引擎或其他实体（例如，网络管理系统，操作支持系统））确定替换路径时确定替换路径。 在一个实施例中，不在初始路径上的网络节点替换初始路径上的节点，同时使用在初始路径中使用的相同的接收和发送时隙。
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公开(公告)号：US09306831B2
公开(公告)日：2016-04-05
申请号：US11057641
申请日：2005-02-14
IPC分类号： H04L12/26 , G06F15/173 , H04L12/701 , H04L12/707 , H04L12/723
CPC分类号： H04L45/00 , H04L45/24 , H04L45/502
摘要： A technique efficiently load balances traffic engineering (TE) label switched paths (LSPs) from a head-end node to a tail-end node of a computer network. The novel load balancing technique identifies (e.g., at the head-end node or a path computation element, PCE) a set of paths with equal costs from the head-end node to the tail-end node, where each path of the set is composed of one or more associated links. “Link values” such as, e.g., the number of unconstrained TE-LSPs on the link, the amount of available bandwidth on the link, or the percent of total available bandwidth already in use on the link, are applied to each link of each path. The most restrictive link values (link availability) of each path of the set, such as, e.g., the link with the lowest amount of available bandwidth, etc., are then compared. Upon comparing the link availability, the novel technique load balances established and/or new TE-LSPs from the head-end node to the tail-end node over the set of paths accordingly.
摘要翻译： 技术有效地将流量工程（TE）标签交换路径（LSP）从头端节点负载平衡到计算机网络的尾端节点。 新颖的负载平衡技术在头端节点到尾端节点识别（例如，在头端节点或路径计算元件PCE）具有相同成本的路径集合，其中集合的每个路径为 由一个或多个相关联的链接组成。 “链路值”例如链路上的无约束TE-LSP的数量，链路上的可用带宽的数量或链路上已经使用的总可用带宽的百分比被应用于每个链路的每个链路 路径。 然后比较集合的每个路径的最严格的链路值（链路可用性），例如具有最低可用带宽量的链路等。 在比较链路可用性时，新技术相应地通过该组路径从前端节点到尾端节点建立和/或新的TE-LSP平衡。
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公开(公告)号：US09300569B2
公开(公告)日：2016-03-29
申请号：US13563077
申请日：2012-07-31
申请人： Jonathan W. Hui , Jean-Philippe Vasseur , Wei Hong
发明人： Jonathan W. Hui , Jean-Philippe Vasseur , Wei Hong
IPC分类号： H04L12/54 , H04L12/721 , H04L12/751 , G06F17/30 , H04L12/743
CPC分类号： H04L45/14 , G06F17/30162 , H04L45/02 , H04L45/12 , H04L45/7453 , H04L47/70
摘要： In one embodiment, a Transit Information Bloom Filter (TIBF) signal component is generated for use with a routing protocol control message, the TIBF signal component identifying at least one parent node for a corresponding routing topology. The TIBF signal component is encoded in a generated Bloom filter. The parameters of the generated Bloom filter are based at least on one parent node to be encoded and a desired false positive rate for the Bloom filter. The address for each parent node is also encoded in the Bloom filter.
摘要翻译： 在一个实施例中，生成与路由协议控制消息一起使用的传输信息布隆过滤器（TIBF）信号分量，所述TIBF信号组件标识用于相应路由拓扑的至少一个父节点。 TIBF信号分量在生成的Bloom过滤器中进行编码。 生成的Bloom过滤器的参数至少基于要编码的一个父节点和Bloom过滤器的所需假阳性率。 每个父节点的地址也在Bloom过滤器中进行编码。
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公开(公告)号：US09288066B2
公开(公告)日：2016-03-15
申请号：US13293871
申请日：2011-11-10
IPC分类号： H04L12/28 , H04L12/18 , H04L12/751 , H04L12/721 , H04L12/761 , H04J1/16
摘要： In one embodiment, a network device selectively operates according to a sparse multicast mode where the network device stores individual devices interested in one or more multicast groups and distributes corresponding multicast group traffic based on the individual devices. Alternatively, the network device selectively operates according to a dense multicast mode where the network device maintains a list of the one or more multicast groups in which at least one device is interested and distributes corresponding multicast group traffic through broadcasting. By determining one or more resource-related characteristics, the network device may then select between operation in the sparse multicast mode and the dense multicast mode based on the resource-related characteristics.
摘要翻译： 在一个实施例中，网络设备根据稀疏多播模式选择性地操作，其中网络设备存储对一个或多个多播组感兴趣的各个设备，并且基于各个设备分发相应的多播组业务。 或者，网络设备根据密集组播模式选择性地操作，其中网络设备维护其中至少一个设备感兴趣的一个或多个多播组的列表，并且通过广播来分发对应的多播组业务。 通过确定一个或多个资源相关特征，网络设备然后可以基于资源相关特性在稀疏组播模式和密集组播模式之间进行选择。
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公开(公告)号：US09231850B2
公开(公告)日：2016-01-05
申请号：US13400819
申请日：2012-02-21
IPC分类号： G06F15/16 , H04L12/751 , H04W40/12 , H04L12/721
CPC分类号： H04L45/026 , H04L45/70 , H04W40/12
摘要： In one embodiment, a particular device determines a selected link from the particular device toward a root device in a computer network, wherein traffic destined away from the root device via the particular device utilizes the selected link in reverse. By monitoring a link quality of the selected link in reverse based on received traffic over the selected link, the particular device may determine whether the link quality is below a lower threshold. In response to the link quality being below the lower threshold, the particular device activates use of keepalive messages from the particular device over the selected link.
摘要翻译： 在一个实施例中，特定设备确定从特定设备到计算机网络中的根设备的选定链路，其中通过特定设备远离根设备的业务相反地使用所选择的链路。 通过基于所选择的链路上的接收到的业务来反向监视所选择的链路的链路质量，特定设备可以确定链路质量是否低于较低的阈值。 响应于链路质量低于较低阈值，特定设备激活在所选链路上使用来自特定设备的保持活动消息。
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公开(公告)号：US09198203B2
公开(公告)日：2015-11-24
申请号：US12942972
申请日：2010-11-09
IPC分类号： G06F15/16 , H04W76/00 , H04L29/06 , H04L12/701 , H04L12/707 , H04W4/00 , H04W84/18
CPC分类号： H04W76/007 , H04L29/06 , H04L45/00 , H04L45/24 , H04W4/38 , H04W40/22 , H04W40/28 , H04W76/50 , H04W84/18 , Y02D70/142 , Y02D70/144 , Y02D70/22
摘要： According to one or more implementations of the disclosure, packets may be transmitted in a low power and lossy network (LLN) by receiving, on a first node, a message from a sending node, and by activating a critical message configuration to be applied in routing the message. A message identifier (e.g., signature) for the message may also be received or gleaned. The message identifier can be compared at the first node to a list of stored message identifiers, created based on routing history, to determine if the message has already been received. As such, if the message has not been received at the first node previously, a first parent and a second parent for the message are identified and the message, along with the critical message indication, can be transmitted to the first parent and the second parent, thereby achieving redundancy in the routing of the message.
摘要翻译： 根据本公开的一个或多个实现方式，分组可以通过在第一节点上从发送节点接收消息并且通过激活要应用的关键消息配置来在低功率和有损网络（LLN）中发送 路由消息。 消息的消息标识符（例如，签名）也可以被接收或收集。 可以将消息标识符在第一节点处与基于路由历史创建的存储消息标识符列表进行比较，以确定消息是否已经被接收。 因此，如果先前还没有在第一个节点处接收到消息，则识别该消息的第一个父节点和第二个父节点，并将该消息连同关键消息指示一起发送到第一个父节点和第二个父节点 从而在消息的路由中实现冗余。
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7.发明授权Time-based scheduling for tunnels computed by a stateful path computation element 有权由状态路径计算元素计算的隧道的基于时间的调度公开(公告)号：US09197508B2
公开(公告)日：2015-11-24
申请号：US13524751
申请日：2012-06-15
IPC分类号： H04L12/24 , H04L12/26 , H04L12/911
CPC分类号： H04L41/0896 , H04L41/147 , H04L47/823 , H04L47/825 , H04L47/826
摘要： In one embodiment, a path computation element (PCE) in a computer network receives one or more path computation requests (PCReqs), and records a time of each PCReq and the corresponding requested bandwidth. Based on this information, the PCE may determine a traffic profile of the computer network, and may augment a traffic engineering database (TED) with requested bandwidth according to time based on the traffic profile. As such, prior to a particular time, the PCE may determine placement of tunnels within the traffic profile for the particular time.
摘要翻译： 在一个实施例中，计算机网络中的路径计算元件（PCE）接收一个或多个路径计算请求（PCReq），并记录每个PCReq的时间和相应的请求带宽。 基于该信息，PCE可以确定计算机网络的流量简档，并且可以基于流量简档来根据时间来增加具有所请求带宽的流量工程数据库（TED）。 因此，在特定时间之前，PCE可以在特定时间内确定隧道在业务简档内的布置。
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8.发明申请Network Server Layer Providing Disjoint Channels in Response to Client-Layer Disjoint Path Requests 审中-公开网络服务器层提供响应于客户端层不连续路径请求的不相交通道公开(公告)号：US20150263811A1
公开(公告)日：2015-09-17
申请号：US14726585
申请日：2015-05-31
申请人： Clarence Filsfils , Ornan Alexander Gerstel , Gabriele Maria Galimberti , Jean-Philippe Vasseur , David Delano Ward , Walid Wakim
发明人： Clarence Filsfils , Ornan Alexander Gerstel , Gabriele Maria Galimberti , Jean-Philippe Vasseur , David Delano Ward , Walid Wakim
IPC分类号： H04B10/27 , H04B10/25 , H04L12/723
CPC分类号： H04B10/27 , H04B10/25 , H04J14/0267 , H04L45/128 , H04L45/50 , H04L67/42 , H04Q11/0005 , H04Q11/0066 , H04Q2011/0077
摘要： In one embodiment, a network server layer provides disjoint channels in response to client-layer disjoint path requests. For example, the network layer can be an optical network, and the client layer may be a packet switching layer (e.g., label switching, Internet Protocol). In one embodiment, a server-layer node receives a client-layer disjoint path request to provide a server-layer channel through a server-layer network. The client-layer disjoint path request includes an identifier corresponding to an existing client-layer path that traverses a current channel through the server-layer network that does not include the server-layer node. The server-layer network determines a particular channel through the server-layer network that is disjoint to the current channel based on route information of the current channel, and then signaling is performed within the server-layer network to establish the particular channel.
摘要翻译： 在一个实施例中，网络服务器层响应于客户端层不相交路径请求而提供不相交的信道。 例如，网络层可以是光网络，并且客户端层可以是分组交换层（例如，标签交换，因特网协议）。 在一个实施例中，服务器层节点接收客户端层不相交路径请求，以通过服务器层网络提供服务器层信道。 客户端层不相交路径请求包括对应于穿过不包括服务器层节点的服务器层网络的当前信道的现有客户端层路径的标识符。 服务器层网络基于当前信道的路由信息，通过服务器层网络确定与当前信道不相关的特定信道，然后在服务器层网络内执行信令以建立特定信道。
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公开(公告)号：US09124482B2
公开(公告)日：2015-09-01
申请号：US13185805
申请日：2011-07-19
IPC分类号： H04L12/875 , H04L12/751 , H04W72/12 , H04L12/727 , H04L12/26 , H04W72/04 , H04L12/823
CPC分类号： H04L47/283 , H04L43/00 , H04L43/08 , H04L45/02 , H04L45/121 , H04L45/24 , H04L45/30 , H04L47/32 , H04L47/56 , H04W72/048 , H04W72/12
摘要： In one embodiment, certain nodes in a computer network maintain a plurality of routing topologies, each associated with a different corresponding delay (e.g., dynamically adjusted). Upon receiving a packet with an indicated delay budget at a particular node, the node updates the delay budget based on an incurred delay up to and including the particular node since the indicated delay budget was last updated, and selects a particular routing topology on which to forward the packet based on the updated delay budget and the corresponding routing topology delays. The packet may then be forwarded with the updated delay budget on the selected routing topology, accordingly.
摘要翻译： 在一个实施例中，计算机网络中的某些节点维护多个路由拓扑，每个路由拓扑与不同的对应延迟（例如，动态调整）相关联。 在特定节点接收到具有指示的延迟预算的分组之后，节点根据所指示的延迟预算最近更新时，基于直到并包括特定节点的发生的延迟来更新延迟预算，并且选择特定路由拓扑 基于更新的延迟预算和相应的路由拓扑延迟来转发分组。 相应地，可以在所选择的路由拓扑上以更新的延迟预算转发分组。
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10.发明授权公开(公告)号：US09059929B2
公开(公告)日：2015-06-16
申请号：US13524481
申请日：2012-06-15
IPC分类号： H04L12/56 , G06F17/30 , H04L12/761 , H04L12/753 , H04W40/20 , H04L12/725
CPC分类号： H04L45/16 , H04L45/306 , H04L45/48 , H04W40/20
摘要： In one embodiment, a system comprises a plurality of minimalistic data collection nodes in a computer network, the minimalistic data collection nodes configured to generate sensed data values of a particular type and to communicate the data values within the computer network in substantially real-time using distributed data acquisition (DA) packets specific to the particular type of the data values. The system also comprises a plurality of capable data collection nodes in the computer network, the capable data collecting nodes configured to store the data values of the minimalistic data collection nodes from the DA packets. One or more points of use of the system may be configured to request the data values, wherein one or more particular capable data collection nodes of the system are configured to service the request in substantially real-time on behalf of the minimalistic data collection nodes with the stored data values.
摘要翻译： 在一个实施例中，系统包括计算机网络中的多个简约数据收集节点，所述极简数据收集节点被配置为生成特定类型的感测数据值，并且基本上实时地使用计算机网络内的数据值传达 分布式数据采集（DA）数据包特定于特定类型的数据值。 该系统还包括计算机网络中的多个能力数据收集节点，能力数据收集节点被配置为从DA分组存储简约数据收集节点的数据值。 可以将系统的一个或多个使用点配置为请求数据值，其中系统的一个或多个特定能力的数据收集节点被配置为代表极简数据收集节点基本上实时地为该请求提供服务， 存储的数据值。
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