公开(公告)号：US11573819B2

公开(公告)日：2023-02-07

申请号：US17154760

申请日：2021-01-21

Applicant: ADVA Optical Networking SE

Inventor： Mal Manas

IPC: G06F9/455 ,  H04L41/5054

Abstract: A computer-implemented method for reducing service disruption times in a network functions virtualization, NFV, network infrastructure includes at least one universal customer premise equipment, uCPE, having hardware resources used for running virtual network functions, VNFs, on virtual machines, VMs. In response to a request for substituting an implemented virtual network function, VNF, linked to other virtual network functions, VNFs, in a VNF service chain by another substitution VNF resource allocation ratios of available hardware resources of the universal customer premise equipment, uCPE, are automatically increased from a default value by oversubscription to provide the hardware resources required by the substitution VNF.

公开(公告)号：US20220385370A1

公开(公告)日：2022-12-01

申请号：US17742005

申请日：2022-05-11

Applicant: ADVA Optical Networking SE

Inventor： Tobias Fehenberger

IPC: H04B10/27 ,  H04B10/548

Abstract: Provided is a method for determining actual values of one or more characteristics of a phase-modulated optical signal. The method includes the steps of acquiring the phase-modulated optical signal by a non-linear device; generating an electrical spectrum based on the acquired phase-modulated optical signal; and extracting actual values of one or more characteristics of the phase-modulated optical signal from the electrical spectrum.

公开(公告)号：US11095430B2

公开(公告)日：2021-08-17

申请号：US16591957

申请日：2019-10-03

Applicant: ADVA Optical Networking SE

Inventor： Andrew Sergeev

IPC: H04L9/32 ,  H04L9/06 ,  H04L29/06

Abstract: There are provided a method and system for assessing latency of ciphering end point of secure communication channel. The method comprises: generating a test traffic comprising a series of original data packets, wherein, for each original data packet, size of a given packet is uniquely indicative of the packet's place in a sequence of data packets in the series and enables unique correspondence with a size of the given packet upon its encryption; successively transmitting the original packets to the ciphering end point, whilst associating with respective departure time stamps; receiving encrypted packets from the ciphering end point and associating them with respective arrival time stamps; using a size of a given encrypted packet with a timestamp TSa to identify a size of a matching original packet, its place in the sequence of original packets and, thereby, its departure timestamp TSd, thus giving rise to a plurality of timestamp pairs (TSd; TSa).

公开(公告)号：US20210243129A1

公开(公告)日：2021-08-05

申请号：US17157407

申请日：2021-01-25

Applicant: ADVA Optical Networking SE

Inventor： Silviu Adrian Sasu ,  Achim Autenrieth

IPC: H04L12/851 ,  H04L12/801 ,  H04L12/841

Abstract: A method and system of correcting a packet delay variation, PDV, of express traffic comprising high-priority express packets interspersed at a transmitter (2) by a preemption mechanism with a best-effort traffic comprising low-priority best-effort packets, wherein the method comprises the steps of: calculating (S1) at the transmitter (2) a preemption delay value, PRDV, which indicates a preemption delay, PD, introduced by the preemption mechanism; writing (S2) the calculated preemption delay value, PRDV, into a delay header field of a header of a high-priority express packet transmitted by said transmitter (2) via a signal line (4) to a receiver (3); extracting (S3) the preemption delay value, PRDV, from the delay header field of the header of the high-priority express packet received by the receiver (3) via the signal line (4) from the transmitter (2); calculating (S4) at the receiver (3) a variation compensation delay, VCD, value by subtracting the extracted preemption delay value, PRDV, from a predetermined worst-case preemption delay value, PRDVworst; and applying (S5) at the receiver an additional delay to the high-priority express packet according to the calculated variation compensation delay, VCD, value to compensate the preemption delay, PD, introduced by the preemption mechanism at the transmitter (2).

公开(公告)号：US10979367B2

公开(公告)日：2021-04-13

申请号：US16270163

申请日：2019-02-07

Applicant: ADVA OPTICAL NETWORKING SE

Inventor： Andrew Sergeev ,  Eli Angel

IPC: H04L12/931 ,  H04L12/935 ,  H04L12/713 ,  H04L12/723 ,  H04L12/947 ,  H04L29/06

Abstract: A method, device, and computer-program product of forwarding data packets in a virtual switch is provided. The virtual switch comprises: first, second and third virtual ports for respectively receiving/transmitting: LAN traffic from/to a physical LAN port; secured traffic from/to a physical secured traffic port; and Internet traffic from/to a physical Internet port. The method comprises: determining, for selected data packets of the outbound traffic, signature information; storing the signature information and information identifying associated packets; outputting the outbound traffic for processing by a virtual machine; receiving at least a portion of the outbound traffic as outbound secured traffic for supply to the secured port; determining whether each data packet of the outbound secure traffic matches the dedicated signature information and responsively controlling the forwarding of the respective data packet as part of the outbound secured traffic to the secured port and/or creating a SUSPICIOUS SOURCE alarm.

公开(公告)号：US20210029035A1

公开(公告)日：2021-01-28

申请号：US17068664

申请日：2020-10-12

Applicant: ADVA Optical Networking SE

Inventor： Robert LeRoy Lynch ,  David Stephen Griswold ,  Troy Anthony Swartz

IPC: H04L12/741 ,  H04L29/12

Abstract: Allowing a network function (such as a router, firewall or SD-WAN endpoint) or service chain of network functions to transparently access a network uplink, while also allowing a set of management entities to access the same link without interference or configuration. To the extent that a conflict arises between ports allocated to the management functions and to the network functions, the relevant port is automatically removed from use by management functions and allocated to network functions to end the conflict.

公开(公告)号：US10784958B2

公开(公告)日：2020-09-22

申请号：US16433079

申请日：2019-06-06

Applicant: ADVA OPTICAL NETWORKING SE

Inventor： Michael Eiselt

IPC: H04B10/071 ,  H04B10/25 ,  H04L1/00 ,  H04L7/00

Abstract: The invention relates to a method of determining a time-of-flight of an optical signal between a starting point and a reflection point of an optical path, comprising: supplying to the path at least one optical probing signal; detecting an electrical return signal according to an optical return signal returning from the path in response to a corresponding one of the probing signals using direct detection; deriving at least one receive code sequence by sampling and slicing the return signal using a sampling rate corresponding to a bit rate of a sequence of pulses of the probing signal; determining a correlation function by correlating the transmit code sequence and the at least one receive code sequence; and identifying a main peak of the correlation function that corresponds to the reflection point and a time position of the peak, and determining the time-of-flight as the time position of the peak.

公开(公告)号：US10681435B2

公开(公告)日：2020-06-09

申请号：US16278607

申请日：2019-02-18

Applicant: ADVA Optical Networking SE

Inventor： Danish Rafique ,  Thomas Szyrkowiec ,  Joerg-Peter Elbers

IPC: H04J14/02 ,  H04Q11/00 ,  G06N3/04 ,  G06N3/08 ,  H04B10/07 ,  H04B10/079

Abstract: An apparatus and method for optimizing dynamically the performance of an optical network, said apparatus comprising at least one learning engine adapted to update a learning model in response to network metrics of said optical network collected during operation of said optical network, wherein the updated learning model is used to generate channel rank information for network channels; and a recommendation engine adapted to change a network channel throughput, a signal path and/or a spectral location of at least one network channel based on the channel rank information generated by the learning model of said learning engine.

公开(公告)号：US10404397B2

公开(公告)日：2019-09-03

申请号：US14757689

申请日：2015-12-23

Applicant: ADVA Optical Networking SE

Inventor： Mohammad Alfiad ,  Fuerst Cornelius ,  Sorin Tibuleac ,  Christophe Meyer

IPC: H04B10/2513 ,  H04J14/02 ,  H04B10/54 ,  H04B10/61 ,  H04L5/00 ,  H04B10/69

Abstract: A wavelength division multiplexed telecommunication system with automatic compensation of chromatic dispersion in a predetermined wavelength band, said WDM telecommunication system comprising a probe signal detection unit at a receiver side adapted to detect amplitude modulated probe signals generated by a probe signal generation unit at a transmitter side with a predetermined relative phase difference and transmitted through an optical link to said receiver side; and a chromatic dispersion compensation unit adapted to compensate the chromatic dispersion in response to a relative phase difference of the amplitude modulated probe signals detected by said probe signal detection unit at the receiver side.

公开(公告)号：US10122460B2

公开(公告)日：2018-11-06

申请号：US15406027

申请日：2017-01-13

Applicant: ADVA Optical Networking SE

Inventor： Mohammad Alfiad ,  Sorin Tibuleac ,  Cornelius Fuerst ,  Christophe Meyer

IPC: H04J14/02 ,  H04B10/2513

Abstract: A chromatic dispersion compensation apparatus for automatic compensation of chromatic dispersion of signals transmitted via an optical link at predetermined wavelengths of WDM channels within a predetermined band. A tapping unit taps optical signals received by the chromatic dispersion compensation apparatus via the optical link at predetermined wavelengths and supply them to an optical coherent receiver adapted to tune its local oscillator to WDM channels to generate corresponding analog electrical signals of the WDM channels which are sampled by an analog digital converter to provide digital signal samples of WDM channels processed by a digital signal processor of the chromatic dispersion compensation apparatus to calculate an estimate residual chromatic dispersion value of the received optical signals. A tuneable dispersion compensation module is set to perform optical compensation of a residual chromatic dispersion of the received optical signals depending on calculated estimate residual chromatic dispersion value of the received optical signals.