公开(公告)号：US12034526B2

公开(公告)日：2024-07-09

申请号：US17911879

申请日：2020-03-20

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Alfredo Palagi ,  Roberto Magri ,  Antonio Tartaglia

IPC: H04B10/00 ,  H04J14/02 ,  H04J14/00

CPC classification number: H04J14/0201

Abstract: An add-drop network element (100) for an optical communications network. The add-drop network element comprises an optical amplifier (102) having an input port and an output port. The add-drop network element comprises also comprises an optical coupler (104) and an optical splitter (106). The optical coupler (104) comprises an add input port, a through input port and an output port, the output port of the optical coupler (104) being connected to the input port of the optical amplifier. The optical splitter (106) comprising a drop output port, a through output port and an input port, the input port of the optical splitter (106) being connected to the output port of the optical amplifier.

公开(公告)号：US11966313B2

公开(公告)日：2024-04-23

申请号：US17616766

申请日：2019-06-12

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Roberto Magri ,  Alfonso Cirillo

IPC: G06F11/32 ,  H04L41/06 ,  H04Q1/14

CPC classification number: G06F11/325 ,  H04L41/06 ,  H04Q1/148

Abstract: A telecommunications apparatus including a lighting apparatus, the lighting apparatus having: a plurality of light sources, an illumination state of the light sources being controllable according to control signals; circuitry connected to the plurality of light sources, wherein the circuity is configured to provide control signals to the light sources; and a plug connected to the circuitry, wherein the plug is configured to connect to an external port of a first telecommunications device, and configured as an interface for control signals from the first telecommunications device to the circuitry. The plurality of light sources are arranged such that a change in illumination state of the plurality of light sources provides a visual indication on a subject telecommunications device. The telecommunications apparatus is configured to receive control signals from the first telecommunications device which correspond to an indication, by the plurality of light sources, relating to the subject telecommunications device.

公开(公告)号：US20230188210A1

公开(公告)日：2023-06-15

申请号：US17924401

申请日：2020-05-11

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Riccardo Ceccatelli ,  Stefano Orsi ,  Francesco Cisamolo ,  Roberto Magri

IPC: H04B10/079 ,  H04J14/02 ,  H04Q11/00

CPC classification number: H04B10/07955 ,  H04J14/0282 ,  H04Q11/0062 ,  H04Q2011/0083

Abstract: An indicator system (200) for optical ports (125) of a passive optical communications equipment (120). The indicator system comprises a plurality of photodetectors (510) configured to detect an optical signal on the optical ports and a plurality of (140) configured to indicate on which optical ports an optical signal is detected by the photodetector. The indicator system further comprises a power source (350) configured to provide power to the photodetectors (510) and indicators (140). The power source is self-contained at the passive optical communications equipment. The power source (350) comprises a mechanical to electrical converter (410).

公开(公告)号：US11431433B2

公开(公告)日：2022-08-30

申请号：US17290074

申请日：2018-11-02

Applicant: Telefonaktiebolaget LM Ericsson (PUBL)

Inventor： Stefano Orsi ,  Paolo Debenedetti ,  Roberto Magri

IPC: H04J14/02

Abstract: Optical protection switching apparatus (10), for a single fibre bidirectional WDM optical ring, comprising: first (12) and second (14) ports for coupling to first and second adjacent portions of a single fibre bidirectional WDM optical ring; an optical splitter (16) comprising an input to receive a WDM aggregate optical signal, and first and second outputs coupled to the first and second ports; an optical switch (108) between the second output and the second port; and processing circuitry (24) to receive at least one of an indication of transmission continuity in the optical ring and an indication of transmission discontinuity in the optical ring, and to generate a switch control signal (20) comprising instructions to cause the optical switch to be open when there is transmission continuity in the optical ring and to cause the optical switch to be closed when there is transmission discontinuity in the optical ring.

公开(公告)号：US11374676B2

公开(公告)日：2022-06-28

申请号：US17048179

申请日：2018-06-04

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Roberto Magri ,  Paolo Debenedetti ,  Riccardo Ceccatelli

IPC: H04B10/075 ,  H04J14/02 ,  H04B10/077 ,  H04L1/00 ,  H01S5/062

Abstract: An optical device (100) for an optical network, comprising an optical input (110), a passive optical component (112), a memory device (114) for storing information relating to the passive optical component. The optical device further comprises an optical splitter (116) configured to power split off a portion of received optical signals to form split optical signals and to output the remaining optical power of received optical signals to the passive optical component and a photodetector (118) configured to receive the split optical signals and to generate a corresponding photodetector output signal. Further the optical device comprises an accumulator (120) configured to be charged by the photodetector output signal, a laser (122) configured to be powered by the accumulator and a controller (124) configured to, in response to a trigger from the photodetector, read said information from the memory device and to cause the laser to transmit an optical signal from an optical output (110), the optical signal carrying a message based on said information read from the memory device.

公开(公告)号：US11190270B2

公开(公告)日：2021-11-30

申请号：US16652638

申请日：2017-10-05

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Gianmarco Bruno ,  Daniele Ceccarelli ,  Roberto Magri

IPC: H04B10/07 ,  H04B10/079 ,  H04B10/071

Abstract: Methods and apparatus are provided for locating a fault in an optical communication link. In one aspect, a method comprises determining a fault in a first optical link, and determining a fault in a second optical link. The method then determines that a first portion of the first optical link is co-located with a second portion of the second optical link and identifies, as a result of determining that the first portion is co-located with the second portion, that the fault in the first optical link is located in the first portion and/or the fault in the second optical link is located in the second portion.

公开(公告)号：US20210320855A1

公开(公告)日：2021-10-14

申请号：US17272493

申请日：2018-08-31

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Antonio Tartaglia ,  Roberto Magri ,  Ulf Ekstedt

IPC: H04L12/26

Abstract: The present disclosure relates to a method, apparatus and system for determining reliability information for a network component (240) of a telecommunications network. The disclosed method comprises: obtaining (310) a plurality of samples of an operating parameter of the network component (240) acquired over a period of time; determining (320) a value of an acceleration factor based on the plurality of samples, the acceleration factor corresponding to an effect of the operating parameter over time on the network component (240); and determining (330) the reliability information based on the determined value of the acceleration factor.

公开(公告)号：US10790924B2

公开(公告)日：2020-09-29

申请号：US16334924

申请日：2016-09-23

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Roberto Magri ,  Fabio Falconi

IPC: H04B10/00 ,  H04J14/02 ,  H04B10/077 ,  H04J14/00

Abstract: A method (100) for facilitating Optical Supervisory Channel (OSC) communications between a main site and a plurality of remote sites in an optical network is disclosed. The main and remote sites are comprised within a Radio Access Network and the main and remote sites are connected via a point to multipoint optical infrastructure. The method comprises receiving an OSC signal on an OSC from the main site (120), sequentially routing OSC signals on the OSC to each of the remote sites in a daisy chain configuration (140) and returning an OSC signal received on the OSC from a last of the remote sites in the daisy chain configuration to the main site (160), the OSC being transported over the point to multipoint optical infrastructure (170). Also disclosed are a method (500) for performing OSC communications in an optical network, a hub node (300, 400), a remote site node (600, 800) and a system (900) for communications in an optical network.

公开(公告)号：US20190140762A1

公开(公告)日：2019-05-09

申请号：US16097647

申请日：2016-05-06

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Roberto Magri ,  Alberto Deho

IPC: H04J14/02

CPC classification number: H04J14/0216 ,  H04J14/0283

Abstract: A network node (400) for use with a single-fiber bidirectional communication link comprises a filter (300). The filter (300) comprises at least four ports. A first port (301) is configured to communicate with the single-fiber in a west direction. A second port (303) is configured to communicate with the single-fiber in an east direction. A third port (305) is configured to add/drop in the west direction. A fourth port (307) is configured to add/drop in the east direction. The network node is configured to add a first wavelength (λA) to the west direction and the east direction, and configured to drop a second wavelength (λB) from the west direction and the east direction.

公开(公告)号：US11716270B2

公开(公告)日：2023-08-01

申请号：US17272493

申请日：2018-08-31

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Antonio Tartaglia ,  Roberto Magri ,  Ulf Ekstedt

IPC: H04L43/0817 ,  H04L43/16

CPC classification number: H04L43/0817 ,  H04L43/16

Abstract: The present disclosure relates to a method, apparatus and system for determining reliability information for a network component (240) of a telecommunications network. The disclosed method comprises: obtaining (310) a plurality of samples of an operating parameter of the network component (240) acquired over a period of time; determining (320) a value of an acceleration factor based on the plurality of samples, the acceleration factor corresponding to an effect of the operating parameter over time on the network component (240); and determining (330) the reliability information based on the determined value of the acceleration factor.