Patents by Inventor Antonio D'Errico

Antonio D'Errico has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10461863
    Abstract: An optical source comprises a first laser arranged to generate a first optical signal having a first state of polarization (SOP) and a first optical frequency; a second laser arranged to generate a second optical signal having a second SOP, substantially orthogonal to the first SOP, and having a second optical frequency, different from the first optical frequency by a preselected frequency difference; a polarisation beam coupler arranged to combine the first optical signal and the second optical signal into a composite optical signal comprising both the first optical signal and the second optical signal having said substantially orthogonal SOPs; and an output arranged to output the composite optical signal.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: October 29, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Francesco Testa, Antonio D'Errico, Ernesto Ciaramella, Luca Giorgi, Wei-Ping Huang, Marco Presi
  • Publication number: 20190238227
    Abstract: A method (100) for managing Optical Wireless Communication (OWC) in a User Equipment (UE) is disclosed, the UE being configured for Radio Frequency (RF) communication with a network and comprising at least two OWC receivers. The method comprises monitoring a captured luminous flux intensity at the OWC receivers (1 10) and, if a captured luminous flux intensity at at least one of the OWC receivers is above a viability threshold (120), selecting the OWC receiver having the highest captured luminous flux intensity (130) and extracting client data from an optical signal received on the selected OWC receiver (140). Also disclosed are a UE (300, 700) configured for RF communication with a network and for OWC, the UE comprising at least two OWC receivers, and a controller (500, 600) for managing OWC in a UE.
    Type: Application
    Filed: August 30, 2016
    Publication date: August 1, 2019
    Inventors: Guilio Bottari, Antonio D'errico
  • Publication number: 20190132659
    Abstract: A data center network node comprising at least one server connection for connecting to a server 6, a connection 7 for connecting the at least one server 6 to a first subnetwork. The first subnetwork is a conventional subnetwork which comprises at least one of a switch or a router. The node further comprises an optical receiver array 20 for connecting the node to an optical offload subnetwork, wherein the optical receiver array 20 comprises a plurality of optical receivers. The array is configured such that each receiver is connectable to an optical path within a multi-path optical connection. The node further comprises an optical transmitter array 23 for connecting the node to an optical offload subnetwork. The optical transmitter array comprises a plurality of optical transmitters. The array is configured such that each receiver is connectable to an optical path within a multi-path optical connection.
    Type: Application
    Filed: April 25, 2016
    Publication date: May 2, 2019
    Inventors: Giulio Bottari, Antonio D'ERRICO, Luca GIORGI
  • Patent number: 10270555
    Abstract: A beamforming device for a phased array antenna, comprising: a laser light source (2) arranged to provide an optical spectrum comprising a plurality of spaced wavelengths, and a distribution unit (4) configured to distribute one or more of the plurality of spaced wavelengths onto a plurality of optical paths (6). A wavelength selection device (8) configured to receive the plurality of spaced wavelengths on each of the plurality of optical paths. One or more phase shift unit (12) connected to a said wavelength selection device, wherein the phase shift unit is configured to introduce a phase shift to a received wavelength. The wavelength selection device on each optical path is configured to selectively transmit a wavelength to the phase shift unit. The wavelength selection device is configured to receive the said phase shifted wavelength from the phase shift unit (12).
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: April 23, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Fabio Cavaliere, Antonio D'Errico, Marzio Puleri
  • Patent number: 10212611
    Abstract: A plurality of sub-cells are defined within a cell area of a radio communication network by the intersection of a radio paths of a plurality of directional radio antennas. The plurality of directional radio antennas are arranged to broadcast radio signals simultaneously, and to receive radio signals simultaneously. This disclosure relates to determining of signal values transmitted by or received from the plurality of directional radio antennas in a radio communication network.
    Type: Grant
    Filed: March 16, 2015
    Date of Patent: February 19, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Marzio Puleri, Antonella Bogoni, Antonio D'Errico, Francesco Laghezza, Paolo Ghelfi, Teresa Pepe, Filippo Scotti
  • Patent number: 10187159
    Abstract: The present invention provides an optical source comprising a laser, a first optical power splitter, phase changing equipment, polarisation state setting equipment, a polarisation beam coupler and an output. The laser is configured to generate an optical signal. The first optical power splitter is configured to split the optical signal into a first optical signal and a second optical signal. The phase changing equipment is configured to change the phase of at least one of the first optical signal and the second optical signal such that the first optical signal has a first phase and the second optical signal has a second phase different from the first phase by a preselected phase difference.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: January 22, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Fabio Cavaliere, Antonio D'Errico, Luca Giorgi
  • Publication number: 20190020109
    Abstract: Transmitting and receiving apparatuses, transmitting and receiving methods, and a transceiver for a phased array antenna are provided. The transmitting apparatus may comprise a laser light source configured to provide an optical beam comprising one or more spectral components. The transmitting apparatus may comprise a modulator configured to modulate the optical beam with a signal to be transmitted. The transmitting apparatus may comprise one or more group delay controlling units configured to add one or more controllable time delays to the one or more spectral components. Further, the transmitting apparatus may comprise a plurality of waveguides each having a chromatic dispersion configured to guide the optical beam, wherein the laser light source is tunable to control time delays added by the plurality of waveguides.
    Type: Application
    Filed: January 6, 2016
    Publication date: January 17, 2019
    Inventors: Marzio PULERI, Antonella BOGONI, Antonio D'ERRICO, Paolo GHELFI, Patryk URBAN
  • Publication number: 20190004341
    Abstract: An opto-electronic oscillator (10) comprising: an optical source (12) to generate an optical carrier signal having a carrier wavelength; an optical phase modulator (14) to apply a sinusoidal phase modulation to the optical carrier signal to generate two first order sidebands having a ? phase difference between them; an optical phase shifter (16) comprising an optical resonator configured to apply a substantially ? phase-shift to one of the first order sidebands at a preselected wavelength within an optical spectrum of said first order sideband; and a photodetector (18) configured to perform optical heterodyne detection of the optical carrier signal with both: said one of the first order sidebands substantially it phase shifted by the optical resonator; and the other of the first order sidebands, to generate an electrical carrier signal (20), and wherein a first part of the electrical carrier signal (20a) is delivered to an electrical output (22) and a second part of the electrical carrier signal (20b) is deli
    Type: Application
    Filed: January 7, 2016
    Publication date: January 3, 2019
    Inventors: Marzio PULERI, Antonella BOGONI, Claudio PORZI, Antonio D'ERRICO, Paolo GHELFI, Glovanni SERAFINO, Vito SORAIANELLO
  • Patent number: 10153849
    Abstract: The invention provides a free space optical (FSO) communications terminal for a first telecommunications card or a backplane. The FSO terminal comprises a plurality of transmission interfaces. The FSO terminal further comprises a light signal generating unit adapted to generate a plurality of light signals. Each of the plurality of light signals carries the same information as the other one or more of the plurality of light signals and is arranged for transmission through a respective one of the plurality of transmission interfaces. Each of the plurality of light signals is at a different orthogonal mode from the other one or more of the plurality of light signals. The invention further provides a free space optical (FSO) communications terminal for a second telecommunications card or a backplane. The FSO terminal comprises a plurality of receive interfaces. Each of the plurality of receive interfaces adapted to receive a light signal carrying information.
    Type: Grant
    Filed: December 24, 2013
    Date of Patent: December 11, 2018
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Antonio D'Errico, Antonella Bogoni, Fabio Cavaliere, Luca Giorgi
  • Patent number: 10129160
    Abstract: Anode for burst switching of traffic flows in an optical network switches bursts of traffic flows in different time slots. Time slots are allocated (96) so that a time gap between successive allocated time slots is selected according to a jitter specification of the traffic flow. A map of the allocations controls a burst switch to pass the bursts in their allocated time slots (86). By making the time gap between allocated time slots for successive bursts selectable, the jitter can be controlled more precisely, or the proportion of time slots filled can be increased resulting in better utilization of available bandwidth. The allocation can be made hop by hop. The map can be generated in a distributed and duplicated manner at each node. The allocation can be updated to adapt to changes bandwidth demands.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: November 13, 2018
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Marzio Puleri, Antonio D'Errico
  • Publication number: 20180248625
    Abstract: An optical source comprises a first laser arranged to generate a first optical signal having a first state of polarization (SOP) and a first optical frequency; a second laser arranged to generate a second optical signal having a second SOP, substantially orthogonal to the first SOP, and having a second optical frequency, different from the first optical frequency by a preselected frequency difference; a polarisation beam coupler arranged to combine the first optical signal and the second optical signal into a composite optical signal comprising both the first optical signal and the second optical signal having said substantially orthogonal SOPs; and an output arranged to output the composite optical signal.
    Type: Application
    Filed: April 25, 2018
    Publication date: August 30, 2018
    Inventors: Francesco Testa, Antonio D'Errico, Ernesto Ciaramella, Luca Giorgi, Wei-Ping Huang, Marco Presi
  • Publication number: 20180234345
    Abstract: A method (10) of routing communications traffic packets across a communications network comprising a plurality of nodes and a plurality of links interconnecting respective pairs of the nodes, the method comprising steps: a) for links of the network, obtaining a respective plurality of measurements of a parameter indicative of a quality of forwarding communications traffic packets across the link (12); b) for each said link, calculating from the respective plurality of measurements of the parameter an index indicative of a percentage of the respective plurality of measurements of the parameter for which the parameter satisfies a preselected threshold value of the parameter (14); and c) selecting a path for communications traffic packets across the communications network by selecting links for the path based on the respective index of each said link (16).
    Type: Application
    Filed: August 19, 2015
    Publication date: August 16, 2018
    Inventors: Francesco FONDELLI, Giulio BOTTARI, Antonio D'ERRICO, Enrico DUTTI
  • Publication number: 20180198551
    Abstract: A beamforming device for a phased array antenna, comprising: a laser light source (2) arranged to provide an optical spectrum comprising a plurality of spaced wavelengths, and a distribution unit (4) configured to distribute one or more of the plurality of spaced wavelengths onto a plurality of optical paths (6). A wavelength selection device (8) configured to receive the plurality of spaced wavelengths on each of the plurality of optical paths. One or more phase shift unit (12) connected to a said wavelength selection device, wherein the phase shift unit is configured to introduce a phase shift to a received wavelength. The wavelength selection device on each optical path is configured to selectively transmit a wavelength to the phase shift unit. The wavelength selection device is configured to receive the said phase shifted wavelength from the phase shift unit (12).
    Type: Application
    Filed: June 30, 2015
    Publication date: July 12, 2018
    Inventors: Fabio Cavaliere, Antonio D'Errico, Marzio Puleri
  • Patent number: 10014943
    Abstract: An optical source (10) comprising: a first laser (12) arranged to generate a first optical signal (14) having a first state of polarization and a first optical frequency; a second laser (16) arranged to generate a second optical signal (18, 48, 78) having a second state of polarization, substantially orthogonal to the first state of polarization, and having a second optical frequency, different to the first optical frequency by a preselected frequency difference, ??; a polarization beam coupler (20) arranged to combine the first optical signal and the second optical signal into a composite optical signal comprising both the first optical signal and the second optical signal having said substantially orthogonal states of polarization; and an output (22) arranged to output the composite optical signal (24).
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: July 3, 2018
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Francesco Testa, Antonio D'Errico, Ernesto Ciaramella, Luca Giorgi, Wei-Ping Huang, Marco Presi
  • Patent number: 9979482
    Abstract: An optical source (10) comprising: a first laser (12) arranged to generate a first optical signal (14) having a first state of polarization and a first optical frequency; a second laser (16) arranged to generate a second optical signal (18, 48, 78) having a second state of polarization, substantially orthogonal to the first state of polarization, and having a second optical frequency, different to the first optical frequency by a preselected frequency difference, ??; a polarization beam coupler (20) arranged to combine the first optical signal and the second optical signal into a composite optical signal comprising both the first optical signal and the second optical signal having said substantially orthogonal states of polarization; and an output (22) arranged to output the composite optical signal (24).
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: May 22, 2018
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Francesco Testa, Antonio D'Errico, Ernesto Ciaramella, Luca Giorgi, Wei-Ping Huang, Marco Presi
  • Patent number: 9948389
    Abstract: An optical carrier selector system is provided for selecting a wanted carrier signal from a multi-carrier signal comprising a plurality of carrier signals. The optical carrier selector system comprises a series of optical filter devices. Each optical filter device of the series comprises an input port for receiving a signal comprising two or more carrier signals, each optical filter device being configured to filter out an unwanted carrier signal. Each optical filter device also comprises an output port for outputting at least the wanted carrier signal and any remaining signals that have not been filtered out by that particular optical filter device, and a drop port for outputting the unwanted carrier signal that is being filtered out by the respective optical filter device.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: April 17, 2018
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Antonio D'Errico, Piero Castoldi, Claudio Porzi, Nicola Sambo
  • Publication number: 20180091353
    Abstract: A periodic phase modulation, having a period shorter than a symbol period, is applied as a source modulation, in addition to a symbol modulation, to signals transmitted between a transmitter and a receiver in a communication network. Symbol value elements can be sent from multiple transmitters (203, 303, 603, 703) to a receiver (607, 207) in the same symbol period can be processed on the basis of the source modulation without destructive interference. In some embodiments, the symbol value elements sent by different transmitters can be combined in the receiver. In some embodiments, symbol value elements sent by different transmitters can be distinguished in the receiver.
    Type: Application
    Filed: March 12, 2015
    Publication date: March 29, 2018
    Inventors: Marzio Puleri, Antonella Bogoni, Antonio D'Errico, Francesco Laghezza, Paolo Ghelfi, Teresa Pepe, Filippo Scotti
  • Patent number: 9917651
    Abstract: A feed signal generator (10) for a phased array antenna, comprising: an input (12) to receive an optical spectrum having first and second phase-locked spectral components, respectively having first and second optical frequencies; wavelength selective separator apparatus (14) to separate the optical spectrum into a first optical signal being the first spectral component and a second optical signal being the second spectral component; an optical time delay element (16) to apply a time delay to the first optical signal to form a delayed optical signal; a heterodyning device (20) to heterodyne the delayed optical signal and the second optical signal to generate a feed signal (22) having a power proportional to a product of the amplitudes of the second and delayed optical signals and a phase proportional to the time delay; and optical amplitude control apparatus (18) to set an amplitude of the delayed optical signal such that the product of said amplitudes causes the power of the feed signal to have a preselected
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: March 13, 2018
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Marzio Puleri, Antonio D'Errico, Anna Molony
  • Publication number: 20180062261
    Abstract: A receiver (1) for a phased array antenna comprises a laser light source (2) arranged to provide an optical spectrum comprising a first spectral component having a first wavelength and a second spectral component having a second wavelength. The first wavelength is spaced from the second wavelength. A wavelength separator (4) is configured to separate the first spectral component from the second spectral component, such that the first spectral component is directed onto a first path (A) and the second spectral component is directed onto a second path (B). A first delay unit (16) is configured to add a controllable time delay to the first spectral component on the first path. A second delay unit (42) is configured to add the time delay to the second spectral component on the second path. A modulator (14) is configured to modulate the first spectral component on the first path with a received RF signal from the phased array antenna.
    Type: Application
    Filed: March 12, 2015
    Publication date: March 1, 2018
    Inventors: Marzio Puleri, Antonella Bogoni, Antonio D'Errico, Paolo Ghelfi
  • Publication number: 20180049041
    Abstract: A plurality of sub-cells are defined within a cell area of a radio communication network by the intersection of a radio paths of a plurality of directional radio antennas. The plurality of directional radio antennas are arranged to broadcast radio signals simultaneously, and to receive radio signals simultaneously. This disclosure relates to determining of signal values transmitted by or received from the plurality of directional radio antennas in a radio communication network.
    Type: Application
    Filed: March 16, 2015
    Publication date: February 15, 2018
    Inventors: Marzio Puleri, Antonella Bogoni, Antonio D'Errico, Francesco Laghezza, Paolo Ghelfi, Teresa Pepe, Filippo Scotti