Patents Assigned to Telefonica S.A.
  • Patent number: 10778499
    Abstract: A method to provide robustness against noise and interference in wireless communications, a transmitter and computer program products, involving sending to a receiver (13), through a wireless channel (12), information using a constant-envelope waveform with complex baseband representation of the form s[n]=Ac exp{j?[n]}.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: September 15, 2020
    Assignee: Telefonica, S.A.
    Inventors: Javier Lorca Hernando, Carlos González Sánchez
  • Publication number: 20200119776
    Abstract: Method and system to dynamically associate spatial layers to beams in a FWA network operating in the millimeter-wave frequency range. A base station (101) and a CPE (102) are willing to wirelessly transmit and receive data through a wireless channel of said FWA network, said base station (101) having beamforming capabilities henceforth generating multiple wireless beams (103). The base station (101) performs all baseband wireless functions related for creating, keeping and managing the connections between the base station (101) and the CPE (102) at baseband level, wherein information is handled in the form of up to M spatial layer signals, and with no built-in capabilities for creation, detection or management of the beams (103). The base station (101) also performs all necessary RF functions at millimeter-wave frequencies, including beamforming and conversion from complex baseband signals to RF signals and vice versa, and also couples the RF signals to said wireless channel.
    Type: Application
    Filed: October 9, 2019
    Publication date: April 16, 2020
    Applicant: Telefonica, S.A.
    Inventors: Javier LORCA HERNANDO, Elena Serna Santiago
  • Publication number: 20190392292
    Abstract: A system and method for optimizing event prediction in data systems, wherein at least one source (100) comprises: a data collector periodically collecting (101) real data values (300) to generate a stream of data modeled as a time series; a generator (110) of prediction models (M1, M2, M3, . . . , Mx) to which the collected values from the data collector are input; a first forecast module (120) receiving (102) one of the generated prediction models (M1, M2, M3, . . . , Mx) for generating a predicted value (310) and computing a committed error (320) by comparing the predicted value (310) with the real data value (300); and wherein the source (100) sends (105) the committed error (320) within the time series to the destination (200) only if the committed error (320) exceeds a threshold and wherein the destination (200) comprises: a second forecast module (210) receiving (204) the same prediction model (M1, M2, M3, . . .
    Type: Application
    Filed: June 20, 2019
    Publication date: December 26, 2019
    Applicant: Telefonica, S.A
    Inventors: Alberto Mozo Velasco, Sandra Gómez Canaval, Antonio Pastor Perales, Diego R. Lopez
  • Publication number: 20190386988
    Abstract: It is provided a method, device and system for providing authentication of a user of an electronic device (for example, when using a certain service or accessing a certain asset or premises). The user's authentication is based on the measurement of a biometric/biotechnological feature of the individual (preferably on the user's pulse) and on the detection of the user motion (and eventually location) status change.
    Type: Application
    Filed: June 18, 2019
    Publication date: December 19, 2019
    Applicant: Telefónica, S.A
    Inventors: Carlos Segura Perales, Jordi Luque Serrano, Javier Esteban Zarza, Joan Fabregat Serra, Alexandre Maravilla Girbes, Aruna Prem Bianzino, Sergio De Los Santos
  • Patent number: 10396993
    Abstract: The method comprising, in a network based on a chain of individual Service Functions, SFs, that are composed to implement Network Services, NSs: assigning, at an ingress node of a network architecture, to at least one data packet received by said ingress node from the network, a unique cryptographic tag; processing said assigned unique cryptographic tag using a cryptographic function specific to each Service Function, SF; and verifying, at a given point of the network architecture, said processed unique cryptographic tag by applying a cryptographic verification function composed by the inverse functions of the cryptographic functions associated to the SFs traversed by the at least one data packet.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: August 27, 2019
    Assignee: Telefonica, S.A.
    Inventors: Pedro A. Aranda Gutiérrez, Diego R. Lopez, Norisy C. Orea Barrios
  • Publication number: 20190260667
    Abstract: A system and method for validating proof of transit of network traffic through network nodes (N), the node (N) comprising a set of input interfaces (20) receiving incoming packets, a first module (A) to identify a matching route within a routing table (23) and storing means (22) to provide next modules (B, C, D) with two private keys if the packet is matched and/or the packet metadata includes OPoT information. The second module (B) decrypts the OPoT metadata using the first private key associated to the link of the node from which the incoming packets are received. The node (N) has SSS metadata to be processed by a third module (C) for the correct generation of cumulative validation parameters. When the SSS process is finished by the third module (C), the fourth module (D) re-encrypts the OPoT metadata using the second private key before packet forwarding to the subsequent node in the path through output interfaces (21).
    Type: Application
    Filed: February 17, 2019
    Publication date: August 22, 2019
    Applicant: Telefónica, S.A
    Inventors: Alejandro Aguado Martín, Vicente Martín Ayuso, Diego R. López, Antonio Pastor Perales, Víctor López Alvarez
  • Patent number: 10334065
    Abstract: A method for detecting applications of mobile user terminals, comprising: parsing files of an app to obtain domains of requests and splitting every domain into words to generate an app signature, weighting the words to obtain their frequency, splitting the mobile traffic into traffic blocks and each traffic block into words, generating a traffic vector for each block by including the repetition or frequency of each word in the block, comparing the generated traffic vectors with the generated signature by applying a similarity method to obtain the number of times that the signature is detected in the traffic vectors of a mobile terminal, estimating a probability of a user having the app installed in the mobile terminal, applying a threshold on the probability to discard wrongly detected applications.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: June 25, 2019
    Assignee: Telefónica, S.A.
    Inventors: Julia Llanos Alonso, Antonio Guzmán Sacristán, José Maria Alonso Cebrián
  • Patent number: 10284280
    Abstract: A system, method and device to overcome the effects of mobility in OFDM wireless cellular networks. Individual beams are isolated and Doppler impairments are compensated so the constituent beams can reach the users in DL with ideally no Doppler impairments. Similarly in UL the signals corresponding to the different spatial beams are detected and their Doppler impairments compensated.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: May 7, 2019
    Assignee: Telefonica, S.A.
    Inventor: Javier Lorca Hernando
  • Publication number: 20190044672
    Abstract: A method to provide robustness against noise and interference in wireless communications, a transmitter and computer program products, involving sending to a receiver (13), through a wireless channel (12), information using a constant-envelope waveform with complex baseband representation of the form s[n]=Ac exp{j?[n]}.
    Type: Application
    Filed: August 2, 2018
    Publication date: February 7, 2019
    Applicant: TELEFONICA, S.A.
    Inventors: Javier LORCA HERNANDO, Carlos GONZÁLEZ SÁNCHEZ
  • Patent number: 10171610
    Abstract: The distribution network comprising a plurality of caching nodes and wherein the web content had been statically identified as an uncacheable content and originated on an origin-server and wherein the method establishes a time to live, TTL, period value to said uncacheable content based on users requests and responds to said users requests by sending to at least to one CDN user said uncacheable content within said TTL period value. Each one of said plurality of caching nodes in said distribution network including a content caching manager and a pseudo-dynamic content TTL predictor and performing the following steps: a) contacting each one of said plurality of nodes with a centralized repository, in order to download the configuration file of a plurality of said CDN users.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: January 1, 2019
    Assignee: Telefonica, S.A.
    Inventors: Xiaoyuan Yang, Martin Ivan Levi, Carmelo Alexis Acosta Ojeda, Eguzki Astiz Lezaun, Armando Antonio Garcia Sanchez Mendoza, Pablo Rodriguez Rodriguez
  • Patent number: 10153874
    Abstract: Method to perform joint scheduling in the downlink or in the uplink of a centralized OFDM radio access network for a plurality of users considering time, frequency and space domains, scheduler device thereof and computer program products. The method to be applied in the downlink or in the uplink of a centralized radio access network based on OFDM, whereby a set of remote radio heads of a set of remote units are connected to a central unit, that performs all (or part of) the radio-related processing tasks, wherein the scheduling exploit CoMP, NOMA and RF conditions and resource blanking techniques.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: December 11, 2018
    Assignee: Telefonica, S.A.
    Inventor: Javier Lorca Hernando
  • Patent number: 10110633
    Abstract: The method comprising: capturing and removing a public unique identifier set by a Website (300) in a computing device (100D) of a user (100); monitoring, during a first time-period, web-requests the user (100) makes to obtain a web-behavioral profile of the user (300), and storing the obtained web-behavioral profile as a first vector; tracking, during a second time-period, the web-requests to examine the effect each web-request has on assisting the de-anonymization of the user (100), obtaining a second vector; classifying, the obtained second vector taking into account a computed similarity score parameter; creating and mapping, a corresponding private unique identifier for said captured public identifier; and executing, based on said mapping between the private and the public unique identifiers, an intervention algorithm for said web-tracker, that considers a configured intervention policy.
    Type: Grant
    Filed: November 16, 2015
    Date of Patent: October 23, 2018
    Assignee: Telefonica, S.A.
    Inventors: Nikolaos Laoutaris, Jeremy Blackburn
  • Patent number: 10003435
    Abstract: A system, method and device for error detection/estimation in OFDM communications systems is proposed. The disclosed mechanism allows an efficient error prediction in a received packet, without having to perform full FEC decoding of the packet that could impair the overall latency of the system due to the time spent in a complete FEC decoding of the packet. In order to do that, it generates a decision variable with the aim to check whether a received packet has errors or not, after performing only partial FEC decoding of the packet, without either resorting to the use of error-detection codes.
    Type: Grant
    Filed: November 25, 2016
    Date of Patent: June 19, 2018
    Assignee: TELEFONICA, S.A.
    Inventor: Javier Lorca Hernando
  • Publication number: 20180138963
    Abstract: A system, method and device to overcome the effects of mobility in OFDM wireless cellular networks. Individual beams are isolated and Doppler impairments are compensated so the constituent beams can reach the users in DL with ideally no Doppler impairments. Similarly in UL the signals corresponding to the different spatial beams are detected and their Doppler impairments compensated.
    Type: Application
    Filed: November 13, 2017
    Publication date: May 17, 2018
    Applicant: Telefonica S.A.
    Inventor: Javier Lorca Hernando
  • Patent number: 9967126
    Abstract: A method to generate a wireless waveform for use in a wireless communication system, a wireless communication system and computer program product thereof The method comprises the generation of a waveform for application in the wireless communication system characterized by significant phase noise, Doppler spread, multipath, frequency instability, and/or low power efficiency by at the transmitter side: creating a discrete-time instantaneous frequency signal {tilde over (f)}[n]; appending a cyclic prefix with length LCP to the beginning of the discrete-time instantaneous frequency signal {tilde over (f)}[n]; constructing a discrete-time unwrapped instantaneous phase ?[n]; constructing a discrete-time complex baseband signal, and appending at the beginning a Constant Amplitude Zero Autocorrelation, CAZAC, signal of length LCP for multipath detection; and passing the constructed discrete-time complex baseband signal through a digital-to-analog, DAC, converter to yield the continuous-time radio frequency signal s(
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: May 8, 2018
    Assignee: Telefonica, S.A.
    Inventor: Javier Lorca Hernando
  • Patent number: 9961163
    Abstract: A system (111) and method for notifying subscriber devices (121) communicated with a subscriber local area network (120) and an ISP network operator (100) for receiving (101) notification requests comprises: a contact database (14) of subscriber devices (121) and notification mechanisms available for each subscriber device (121), a query manager (11) which consults the contact database (14) to verify the subscriber device (121) and its available notification mechanisms and sends a state of the notification request to the ISP network operator (100), a detector (13) for inventorying each subscriber device (121) in the contact database (14), analyzing (105) traffic from the subscriber local area network (120) and identifying notification mechanisms of each inventored subscriber device (121); a notifier (12) which selects (108) at least one notification mechanism from the available notification mechanisms for notifying the destination subscriber device (121) using the selected notification mechanism if any ava
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: May 1, 2018
    Assignee: TELEFONICA, S.A.
    Inventors: Antonio Agustin Pastor Perales, German Martin Gomez, M Mar Garcia Puerto
  • Patent number: 9948741
    Abstract: A distributed health-check method for web caching in a telecommunication network, wherein a plurality of web caching nodes are coordinated to monitor a set of origin servers where web content is generated. The method includes associating to each user of the telecommunication network requesting the web content buckets as logical containers for holding the web content requested; generating a list of users of the telecommunication network requesting the web content; and performing the plurality of web caching nodes a number of health-checks to the set of origin servers to download the requested web content. A filtering of the set of origin servers is performed for grouping in different areas of interest and the number of health-checks are performed by a limited number of caching nodes receiving the web content requests. The limited number of caching nodes selected belonging to a specific area of interest of the set of origin servers monitoring them.
    Type: Grant
    Filed: December 10, 2013
    Date of Patent: April 17, 2018
    Assignee: Telefonica, S.A.
    Inventors: Xiaoyuan Yang, Martin Ivan Levi, Eguzki Astiz Lezaun, Armando Antonio Garcia Sanchez Mendoza, David Guijarro Guillen, Arcadio Pando Cao, Maite Burrel, David Conejero Olesti
  • Patent number: 9923714
    Abstract: Described herein is a method and system for hierarchical wireless video with network coding which limits encryption operations to a critical set of network coding coefficients in combination with multi-resolution video coding. Such a method and system achieves hierarchical fidelity levels, robustness against wireless packet loss and efficient security by exploiting the algebraic structure of network coding.
    Type: Grant
    Filed: August 10, 2015
    Date of Patent: March 20, 2018
    Assignees: Massachusetts Institute of Technology, Universidade Do Porto, Telefonica, S.A.
    Inventors: Luisa Lima, Steluta Gheorghiu, Joao Barros, Muriel Medard, Alberto Lopez Toledo, Joao Vilela
  • Patent number: 9923703
    Abstract: A system and method for reducing interferences in OFDM networks comprising generating (31) a set of pseudo-random coordination patterns {kin; i=0, . . . , N?1; n=0, . . . , M?1}, wherein kin are integers from 0 to M?1, M is the number of calls in a coordination cluster, N is the number of subcarriers, n is a cell identifier within the coordination cluster, and kin?kim?n?m, i=0, . . . , N?1; generating a randomizing pattern common to all cells within the coordination cluster, comprising an invertible transformation in the time domain of the complex symbols for each subcarrier; spreading (32) the complex symbols over M TTIs: b ? [ i , m ] = M ? ? m = 0 T - 1 ? ? a ? [ i , n ] ? exp ? [ - j2? ? ( Mn + k i ) · m / ( M · T ) ] . wherein a[i,n] denotes the symbols prior to the spreading (32), b[i,m] denotes the symbols after the spreading (32), 0?ki?M?1, i=0, . . . , N?1, m=0, . . .
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: March 20, 2018
    Assignee: Telefonica, S.A.
    Inventor: Javier Lorca Hernando
  • Patent number: 9898536
    Abstract: Methods and systems to perform textual queries on voice communications. The system has an index service for storing a audio content data sets for voice communications. The audio content data sets include at least three audio content data sets for each voice communication. The three audio content data sets include a first audio content data set generated using a speech-to-text conversion technique, a second audio content data set generated using a phoneme lattice technique, and a third audio content data set generated using a keyword identification technique. The system includes a search engine configured to: receive search criteria from a user, the search criteria having at least one keyword; search each of the first, second and third audio content data sets for at least a portion of the plurality of voice communications to identify voice communications matching the search criteria; and combine the voice communications identified by each search to produce a combined list of identified voice communications.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: February 20, 2018
    Assignees: JAJAH LTD., Telefonica, S.A.
    Inventors: Diego Urdiales Delgado, John Eugene Neystadt