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41.发明申请公开(公告)号：US20170149472A1
公开(公告)日：2017-05-25
申请号：US14950459
申请日：2015-11-24
Applicant: Cisco Technology, Inc.
IPC: H04B1/7143 , H04W72/04
CPC classification number: H04B1/7143 , H04W72/0453
Abstract: In one embodiment, a method comprises: allocating, to each network device in a time slotted channel hopping network, a corresponding swapping schedule that maps the network device to different unique sequence offsets for different timeslots allocated to the corresponding network device, each unique sequence offset identifying a corresponding shifted position in a prescribed repeating channel hopping sequence relative to an epochal start of a linearly increasing timeslot value; and causing each network device to transmit according to its corresponding swapping schedule, enabling a channel hopping sequence of each network device to be undetectable relative to the prescribed repeating channel hopping sequence.
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公开(公告)号：US20160344693A1
公开(公告)日：2016-11-24
申请号：US14716927
申请日：2015-05-20
Applicant: Cisco Technology, Inc.
Inventor： PATRICK WETTERWALD , ERIC MICHEL LEVY-ABEGNOLI , PASCAL THUBERT
IPC: H04L29/12
CPC classification number: H04L61/103 , H04L61/6022
Abstract: In one embodiment, a method comprises detecting, by a network device, an endpoint device attempting to access a data network via a data link; and generating, by the network device, a unique device signature for identifying the endpoint device based on the network device identifying a sequence of link layer data packets transmitted by the endpoint device upon connection to the data link, the unique device signature identifying a behavior of the endpoint device independent of any link layer address used by the endpoint device.
Abstract translation: 在一个实施例中，一种方法包括由网络设备检测经由数据链路尝试访问数据网络的端点设备; 以及由所述网络设备生成用于基于所述网络设备识别所述端点设备的唯一设备签名，所述网络设备标识由所述端点设备在连接到所述数据链路时发送的链路层数据分组的序列，所述唯一设备签名识别 端点设备独立于端点设备使用的任何链路层地址。
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43.发明申请公开(公告)号：US20190363976A1
公开(公告)日：2019-11-28
申请号：US15986934
申请日：2018-05-23
Applicant: Cisco Technology, Inc.
Inventor： PASCAL THUBERT , HUIMIN SHE , FEILIANG WANG , PATRICK WETTERWALD
IPC: H04L12/725 , H04L12/751 , H04L12/841
Abstract: A network device establishes a depth-aware communication schedule for one or more nodes in a data network having a routing topology comprising a root node, the establishing including selecting from a slotframe of the depth-aware communication schedule a first subset of timeslots based on the depth, and allocating to each timeslot in the first subset an exclusive role (a transmit operation, a receive operation, or an idle state) for one or more of the nodes at the corresponding depth; the network device identifies one or more idle states in the depth-aware communication schedule, and selects a second subset of timeslots from the idle states as in-case-of-emergency timeslots, based on the network device identifying in the second subset a corresponding timeslot at a neighboring depth being allocated a corresponding transmit operation or receive operation; the network device causes selective transmission of a prioritized data packet in an allocated in-case-of-emergency timeslot.
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公开(公告)号：US20190280983A1
公开(公告)日：2019-09-12
申请号：US15914238
申请日：2018-03-07
Applicant: Cisco Technology, Inc.
Inventor： PASCAL THUBERT , PATRICK WETTERWALD , ERIC MICHEL LEVY-ABEGNOLI
IPC: H04L12/841 , H04L12/26 , H04L12/835 , H04L12/851
Abstract: In one embodiment, a method comprises identifying, by a controller device, first and second paths between an ingress network node and an egress network node in a deterministic network for an identified flow of data packets in an identified sequence, the identifying including identifying a replication node for replicating the identified flow into the first and second paths, and identifying an elimination node for receiving transmitted data packets along the first and second paths for the identified flow and transmitting the identified flow of data packets in the identified sequence; determining a jitter difference of the identified flow between the first and second paths, the jitter difference identifying a maximum jitter encountered in an average difference of latency between the first and second paths; and causing at least one of the elimination node or an upstream node along one of the first or second paths to absorb the jitter difference.
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45.发明申请公开(公告)号：US20190149629A1
公开(公告)日：2019-05-16
申请号：US15813289
申请日：2017-11-15
Applicant: Cisco Technology, Inc.
Abstract: In one embodiment, a method comprises: storing, by a computing device in a non-deterministic data network, a plurality of data packets originated by a source device into a mass storage medium associated with the computing device; receiving, by the computing device, a data request originated by an access point device providing deterministic reachability to a deterministic device in a deterministic data network providing reachability to multiple deterministic devices, the request specifying one or more deterministic constraints associated with reaching the deterministic device; and supplying, by the computing device, a selected one of the data packets to the access point device for delivery of data stored therein to the deterministic device according to the one or more deterministic constraints.
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Patent Agency Ranking
公开(公告)号：US20190124006A1
公开(公告)日：2019-04-25
申请号：US15787790
申请日：2017-10-19
Applicant: Cisco Technology, Inc.
Inventor： PASCAL THUBERT , ERIC MICHEL LEVY-ABEGNOLI , PATRICK WETTERWALD
IPC: H04L12/801 , H04L12/853
CPC classification number: H04L47/12 , H04L47/193 , H04L47/2416 , H04L47/39
Abstract: In one embodiment, a method comprises establishing, by a deterministic device interface circuit, a deterministic link with a peer deterministic interface circuit within a deterministic data network based on identifying a repeating deterministic schedule for transmitting each data packet, allocated to the deterministic schedule, at a corresponding transmission instance coinciding with a reception instance by the peer deterministic interface circuit; determining a latency between sending a request for data to a host device via a non-deterministic data link provided by a network switch, and receiving from the host device a transport layer packet responsive to the request; and sending an instruction to the host device for initiating transfer of the transport layer packet, the instruction correcting for the latency and enabling the deterministic device interface circuit to receive the transport layer packet for transmission of a corresponding data packet on the deterministic link at the corresponding transmission instance.
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47.发明申请公开(公告)号：US20190116000A1
公开(公告)日：2019-04-18
申请号：US15784401
申请日：2017-10-16
Applicant: Cisco Technology, Inc.
Inventor： PASCAL THUBERT , ERIC MICHEL LEVY-ABEGNOLI , PATRICK WETTERWALD
CPC classification number: H04L1/0035 , H04L1/0009 , H04L1/0041 , H04L1/0045 , H04L1/0068 , H04L41/0654 , H04L41/0672 , H04L41/0677 , H04L43/0847
Abstract: In one embodiment, a method comprises: detecting, by a transport layer executed by a processor circuit in an apparatus, a request message received via a non-deterministic data link from one of a plurality of deterministic network interface circuits, the request message for a transport layer packet having been stored in a buffer circuit storing a plurality of transport layer packets in the apparatus, the deterministic network interface circuits providing respective deterministic links for deterministic transmission of the transport layer packets in a deterministic data network, the request message specifying a first number identifying any missed transmission opportunities on the corresponding deterministic link; determining, by the transport layer, a cause of failure in one or more of the missed transmission opportunities; and selectively executing, by the transport layer based on determining the cause of failure, a corrective action for preventing an increase in latency of the transport layer packets.
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48.发明申请公开(公告)号：US20190109797A1
公开(公告)日：2019-04-11
申请号：US15725502
申请日：2017-10-05
Applicant: Cisco Technology, Inc.
Inventor： PASCAL THUBERT , PATRICK WETTERWALD , ERIC MICHEL LEVY-ABEGNOLI
IPC: H04L12/801 , H04L12/861 , H04L29/08 , H04L12/931
Abstract: In one embodiment, a method comprises: receiving, by a transport layer executed by a processor circuit in an apparatus, a flow of application data having been originated by an executable application; storing, by the transport layer, the application data as transport layer packets in a buffer circuit in the apparatus, each transport layer packet having a corresponding transport sequence identifier identifying a corresponding position of the transport layer packet relative to a transmit order of the transport layer packets; and causing, by the transport layer, a plurality of deterministic network interface circuits to deterministically retrieve the transport layer packets, in the transmit order, from the buffer circuit for deterministic transmission across respective deterministic links, the transport sequence identifiers enabling a destination transport layer to recover the transmit order of the transport layer following the deterministic transmission across the deterministic links, regardless of order of reception by the destination transport layer.
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49.发明申请公开(公告)号：US20170223700A1
公开(公告)日：2017-08-03
申请号：US15009872
申请日：2016-01-29
Applicant: Cisco Technology, Inc.
IPC: H04W72/04 , H04L12/751 , H04L5/00 , H04L12/44 , H04L12/24
CPC classification number: H04L45/02 , H04L5/0055 , H04L12/44 , H04L45/22 , H04L2012/445
Abstract: In one embodiment, a method comprises: promiscuously detecting, by a parent network device in a tree-based network topology, a data packet transmitted to a child network device attached to the parent network device, the data packet transmitted by a grandchild network device attached to the child network device; determining, by the parent network device, whether the data packet transmitted to the child network device is to be forwarded toward a destination via the parent network device; and the parent network device selectively initiating intercepted forwarding of the data packet toward the destination, on behalf of the child network device, based on determining that the data packet is to be forwarded toward the destination via the parent network device.
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公开(公告)号：US20170207967A1
公开(公告)日：2017-07-20
申请号：US15002322
申请日：2016-01-20
Applicant: Cisco Technology, Inc.
IPC: H04L12/24 , H04L12/751 , H04L12/707 , H04L12/44
CPC classification number: H04L45/22 , H04L12/44 , H04L41/12 , H04L43/0805 , H04L45/02
Abstract: In one embodiment, a method comprises: a root network device of a tree-based network topology identifying an instability in an identified child device attaching within the tree-based network topology; the root network device generating and storing in a routing information base table, for each sub-child device reachable via the identified child device, a corresponding source-route path starting with the identified child device and ending at the corresponding sub-child device; the root network device adding, to the routing information base table, a current path for reaching the identified child device, enabling the root network device to generate a path for reaching any one sub-child device using the corresponding source-route path via the current path of the identified child device.
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