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公开(公告)号：US10476448B1
公开(公告)日：2019-11-12
申请号：US15956858
申请日：2018-04-19
Applicant: Cisco Technology, Inc.
Inventor： Hang Jin , John T. Chapman
Abstract: Digital pre-distortion may be provided. First, a characterization for input matching circuitry may be determined. Next, a characterization for non-linearity of an amplifier connected to the input matching circuitry may be determined. Then, a distortion correcting signal may be generated from an input signal based on the determined characterization for the input matching circuitry and the determined characterization for the non-linearity of the amplifier. The generated distortion correcting signal may then be provided to the input matching circuitry.
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公开(公告)号：US20190305815A1
公开(公告)日：2019-10-03
申请号：US15943982
申请日：2018-04-03
Applicant: Cisco Technology, Inc.
Inventor： Hang Jin , John T. Chapman
Abstract: Echo cancellation may be provided. First, a feedback signal corresponding to a plurality of downstream paths may be received. Next, during an upstream silence period, a sample of a combination upstream signal may be received comprising a combination of upstream signals from a plurality of upstream paths. An echo correcting signal may then be created using the received feedback signal and the received sample of the combination upstream signal. Downstream echoes may be cancel from the combination upstream signal based on the created echo correcting signal.
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公开(公告)号：US20190097945A1
公开(公告)日：2019-03-28
申请号：US16141517
申请日：2018-09-25
Applicant: Cisco Technology, Inc.
Inventor： John T. Chapman , Elias Chavarria Reyes , Alon Shlomo Bernstein , Dantong Liu , Zheng Lu
IPC: H04L12/911 , H04L12/801
CPC classification number: H04L47/823 , H04L12/2861 , H04L12/2878 , H04L47/127
Abstract: Predictive scheduling may be provided. First, a first device may identify when a service flow is expected to become active. The first device may estimate an initial traffic profile in response to identifying when the service flow is expected to become active. The first device may then grant allocation based on the initial traffic profile of the service flow. Next, the first device may collect feedback to later update the traffic profile estimate. The first device may then update the traffic profile estimate.
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公开(公告)号：US20190020577A1
公开(公告)日：2019-01-17
申请号：US16037718
申请日：2018-07-17
Applicant: Cisco Technology, Inc.
Inventor： John T. Chapman
IPC: H04L12/709 , H04L5/14 , H04B10/2575 , H04L29/08
CPC classification number: H04L45/245 , H04B10/2575 , H04L5/14 , H04L49/602 , H04L69/18 , H04L69/326 , H04Q11/0067
Abstract: Radio Frequency (RF) Ethernet trunking may be provided. A networking system may comprise a first data pathway, a second data pathway, and a third data pathway. The first data pathway may be between a headend and a first node and may comprise a fiber optic channel using a first data transport protocol. The second data pathway may be between the first node and a second node and may comprise a first coaxial cable channel using the first data transport protocol over a first radio frequency spectrum. The third data pathway may be between the second node and a third node and may comprise a second coaxial cable channel using the first data transport protocol over the first radio frequency spectrum. The second data pathway and the third data pathway may comprise a data trunk using the first data transport protocol for data to and from the first node.
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公开(公告)号：US20180337868A1
公开(公告)日：2018-11-22
申请号：US15983023
申请日：2018-05-17
Applicant: Cisco Technology, Inc.
Inventor： John T. Chapman , Tong Liu
IPC: H04L12/911 , H04L12/927 , H04L12/863 , H04L12/28
CPC classification number: H04L47/39 , H04L47/24 , H04L47/2441 , H04L47/6215 , H04N21/6168
Abstract: Waterfall granting may be provided. First, a plurality of grants may be received for a service flow. Then a first plurality of packets may be placed in a first queue associated with the service flow in response to determining that the first plurality of packets corresponding to the service flow are associated with a first quality of service level. Next, a second plurality of packets may be placed in a second queue associated with the service flow in response to determining that the second plurality of packets corresponding to the service flow are associated with a second quality of service level. The first plurality of packets in the first queue may then be serviced from the plurality of grants until all the first plurality of packets in the first queue are serviced before servicing any of the second plurality of packets in the second queue with remaining ones of the plurality of grants.
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Patent Agency Ranking
46.发明申请公开(公告)号：US20180294837A1
公开(公告)日：2018-10-11
申请号：US15483234
申请日：2017-04-10
Applicant: CISCO TECHNOLOGY, INC.
Inventor： John T. Chapman , Hang Jin , Tong Liu
IPC: H04B3/46 , H04B17/345 , H04L12/28
CPC classification number: H04B3/46 , H04B1/38 , H04B17/345 , H04J11/003 , H04L1/0071 , H04L5/00 , H04L5/0073 , H04L5/14 , H04L12/2801 , H04L12/2885
Abstract: An example apparatus comprises a processor, and a memory element in communication with the processor. The processor configured to send a first message to at least a first cable modem of a plurality of cable modems. The first message indicates an upstream test signal to be generated by the first cable modem within a predetermined portion of a frequency spectrum allocated for downstream communication. The processor is further configured to send a second message to at least a second cable modem of the plurality of cable modems. The second message indicates a downstream interference measurement to be performed on the upstream test signal by the second cable modem. The processor is further configured to receive at least one interference measurement result indicative of the downstream interference measurement, and determine at least one interference group for the plurality of cable modems based upon the at least one interference measurement result.
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公开(公告)号：US20180184337A1
公开(公告)日：2018-06-28
申请号：US15647109
申请日：2017-07-11
Applicant: CISCO TECHNOLOGY, INC.
Inventor： Hang Jin , John T. Chapman
CPC classification number: H04W36/0016 , H04B3/23 , H04L12/2863 , H04W36/04
Abstract: A method is described and in one embodiment includes providing a physical connection between a node and a user equipment at a subscriber premises via a cable connection, wherein the node comprises a Data Over Cable Service Interface Specification (“DOCSIS”) remote PHY device (“RPD”) collocated with a cellular small cell device; receiving at the node a cellular downlink (“DL”) data signal from a cellular network connected to the cellular small cell device; combining the received cellular DL data signal with a DOCSIS downstream (“DS”) signal from a cellular network connected to the DOCSIS RPD to create a combined DS data signal; and forwarding the combined DS data signal from the node to the user equipment via the cable connection.
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公开(公告)号：US09912464B2
公开(公告)日：2018-03-06
申请号：US15052542
申请日：2016-02-24
Applicant: CISCO TECHNOLOGY, INC.
Inventor： Hang Jin , John T. Chapman
CPC classification number: H04L5/1461 , H04B3/20 , H04B3/32 , H04B3/487 , H04L12/2801
Abstract: An example method for characterizing interference relationships in full duplex cable network environments is provided and includes generating a global interfered list for a plurality of cable modems in the cable network and for a plurality of frequency ranges, generating a global interfering list for the plurality of cable modems and for the plurality of frequency ranges, assigning respective downstream reception frequency ranges and upstream transmission frequency ranges for the plurality of cable modems based on the global interfered list and the global interfering list, and transmitting to the cable modems corresponding assignment information comprising the respective assigned downstream reception frequency ranges and upstream transmission frequency ranges.
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公开(公告)号：US09692564B2
公开(公告)日：2017-06-27
申请号：US14685452
申请日：2015-04-13
Applicant: CISCO TECHNOLOGY, INC.
Inventor： John T. Chapman , Jiening Ao , Brian Patrick Bresnahan , Pawel Piotr Sowinski , Lin Su
IPC: H04L12/28 , H04L12/56 , H04L5/00 , H04L27/34 , H04B3/54 , H04L27/26 , H04L12/801 , H04L12/807 , H04J3/06
CPC classification number: H04L5/0007 , H04B3/542 , H04J3/0667 , H04J3/0673 , H04L5/006 , H04L12/2801 , H04L27/2697 , H04L27/3405 , H04L27/345 , H04L47/12 , H04L47/27
Abstract: An example method for Downstream External Physical Interface (DEPI) in Data Over Cable Service Interface Specification (DOCSIS) 3.1 network environments is provided and includes generating, at a Converged Cable Access Platform (CCAP) core, a DEPI-Packet Streaming Protocol (PSP) pseudo-wire (PW) packet including a PSP sub-layer header having a same length for a Quadrature Amplitude Modulation (QAM) channel and an Orthogonal Frequency-Division Multiplexing (OFDM) channel in the DOCSIS network environment, and transmitting the DEPI-PSP PW packet over a DEPI interface to a remote physical layer (R-PHY) entity.
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50.发明申请VIRTUAL CABLE MODEM TERMINATION SYSTEM REDUNDANCY IN A CABLE MODEM NETWORK ENVIRONMENT 审中-公开虚拟电缆调制解调器终端系统在电缆调制解调器网络环境中的冗余公开(公告)号：US20160328251A1
公开(公告)日：2016-11-10
申请号：US14807720
申请日：2015-07-23
Applicant: CISCO TECHNOLOGY, INC.
Inventor： Alon Bernstein , John T. Chapman , Amit Singh , Jan Medved
CPC classification number: G06F9/455 , G06F9/45558 , G06F2009/45562 , G06F2009/4557 , H04L12/2801 , H04L12/2885 , H04L12/4633
Abstract: An example system and method for facilitating virtual cable modem termination system VCMTS redundancy in cable modem network environments is provided and includes spawning a first instance of a virtual network function (VNF) on a first server in a cable modem network, spawning a second instance of the VNF on a different second server, configuring the second instance to be communicatively coupled to the first instance in a same subnet of the network, and synchronizing (e.g., copying, coordinating, matching, etc.) state between the first instance and the second instance. In specific embodiments, the VNF comprises a VCMTS.
Abstract translation: 提供一种用于促进虚拟电缆调制解调器终端系统VCMTS冗余在电缆调制解调器网络环境中的示例性系统和方法，包括在有线调制解调器网络中的第一服务器上产生虚拟网络功能（VNF）的第一实例，产生第二实例 VNF在不同的第二服务器上，将第二实例配置为与网络的同一子网中的第一实例通信耦合，并且在第一实例与第二服务器之间同步（例如，复制，协调，匹配等）状态 实例。 在具体实施例中，VNF包括VCMTS。
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