公开(公告)号：US20190392292A1

公开(公告)日：2019-12-26

申请号：US16446649

申请日：2019-06-20

Applicant: Telefonica, S.A

Inventor： Alberto Mozo Velasco ,  Sandra Gómez Canaval ,  Antonio Pastor Perales ,  Diego R. Lopez

IPC: G06N3/04

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, . . . , Mx) from the generator (110) through a communication channel (103); a correction module (220) for obtaining (203) the real data value by the generated prediction model (M1, M2, M3, . . . , Mx) and applying the committed error (320) if received (202) from the source (100).

公开(公告)号：US10396993B2

公开(公告)日：2019-08-27

申请号：US15480659

申请日：2017-04-06

Applicant: Telefonica, S.A.

Inventor： Pedro A. Aranda Gutiérrez ,  Diego R. Lopez ,  Norisy C. Orea Barrios

IPC: H04L9/32 ,  H04L9/06 ,  H04L12/833 ,  H04L12/801 ,  H04L29/06 ,  H04L9/14 ,  H04L12/701

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.

公开(公告)号：US10171610B2

公开(公告)日：2019-01-01

申请号：US14418813

申请日：2013-07-29

Applicant: Telefonica, S.A.

Inventor： Xiaoyuan Yang ,  Martin Ivan Levi ,  Carmelo Alexis Acosta Ojeda ,  Eguzki Astiz Lezaun ,  Armando Antonio Garcia Sanchez Mendoza ,  Pablo Rodriguez Rodriguez

IPC: G06F15/16 ,  H04L29/08 ,  G06F17/30

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. b) identifying, said content caching manager of each caching node, the uncacheable content as a pseudo-dynamic content; c) predicting, a pseudo-dynamic content TTL predictor of said caching node, said TTL period value in which the uncacheable content will not be modified; and d) caching, each one of said plurality of nodes, the uncacheable content during said predicted TTL period value. The system of the invention is arranged to implement the method of the invention.

公开(公告)号：US10153874B2

公开(公告)日：2018-12-11

申请号：US15334680

申请日：2016-10-26

Applicant: Telefonica, S.A.

Inventor： Javier Lorca Hernando

IPC: H04L5/00 ,  H04W72/12 ,  H04L5/14

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.

公开(公告)号：US10110633B2

公开(公告)日：2018-10-23

申请号：US14942319

申请日：2015-11-16

Applicant: Telefonica, S.A.

Inventor： Nikolaos Laoutaris ,  Jeremy Blackburn

IPC: H04L29/06 ,  H04L29/08

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.

公开(公告)号：US20180138963A1

公开(公告)日：2018-05-17

申请号：US15810588

申请日：2017-11-13

Applicant: Telefonica, S.A.

Inventor： Javier Lorca Hernando

IPC: H04B7/08 ,  H04L5/00 ,  H04B7/0413 ,  H04B7/0408

CPC classification number: H04B7/086 ,  H04B7/0408 ,  H04B7/0413 ,  H04B7/0452 ,  H04B7/08 ,  H04L5/001 ,  H04L27/2657 ,  H04L27/2684

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.

公开(公告)号：US09923714B2

公开(公告)日：2018-03-20

申请号：US14822115

申请日：2015-08-10

Applicant: Massachusetts Institute of Technology

Inventor： Luisa Lima ,  Steluta Gheorghiu ,  Joao Barros ,  Muriel Medard ,  Alberto Lopez Toledo ,  Joao Vilela

IPC: H04L9/32 ,  H04L9/08 ,  H04L1/18 ,  H04N21/2343 ,  H04N21/2347 ,  H04N21/266 ,  H04N21/2662 ,  H04N21/61 ,  H04N21/6377 ,  H04N21/647 ,  H04N7/167 ,  H04W12/06 ,  H04L29/06 ,  H04L1/00

CPC classification number: H04L9/0819 ,  H04L1/1812 ,  H04L63/0428 ,  H04L2001/0097 ,  H04L2209/24 ,  H04N7/167 ,  H04N21/234327 ,  H04N21/2347 ,  H04N21/26613 ,  H04N21/2662 ,  H04N21/6131 ,  H04N21/6377 ,  H04N21/64792 ,  H04W12/06

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.

公开(公告)号：US20170295021A1

公开(公告)日：2017-10-12

申请号：US15480659

申请日：2017-04-06

Applicant: Telefonica, S.A.

Inventor： Pedro A. ARANDA GUTIÉRREZ ,  Diego R. LOPEZ ,  Norisy C. OREA BARRIOS

IPC: H04L9/32 ,  H04L12/833 ,  H04L9/06 ,  H04L12/801

CPC classification number: H04L9/3239 ,  H04L9/0637 ,  H04L9/14 ,  H04L9/3252 ,  H04L45/00 ,  H04L47/31 ,  H04L47/34 ,  H04L63/12 ,  H04L2209/38

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.

公开(公告)号：US09781714B2

公开(公告)日：2017-10-03

申请号：US14871075

申请日：2015-09-30

Applicant: Telefonica, S.A.

Inventor： Javier Lorca Hernando

IPC: H04W72/04 ,  H04L5/00 ,  H04B7/0413 ,  H04L1/00 ,  H04L1/22 ,  H04B17/345 ,  H04J11/00 ,  H04L27/26

CPC classification number: H04W72/042 ,  H04B7/0413 ,  H04B17/345 ,  H04J11/005 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/22 ,  H04L5/0023 ,  H04L27/2613

Abstract: A system and method are provided for assisting user devices in performing OFDMA downlink interference cancellation, in which an interfering base station transmits a downlink signal in a first slot and a second slot, both slots including cell reference signals (CRSs) for physical channel estimation, the CRS of the second slot is modified to indicate encoded values of parameters characterizing the physical channel according to an encoding procedure, the slots are received by a served user device that detects the physical channel parameters carried by dedicated control signalling and encodes them by the encoding procedure, an unchanged CRS is reconstructed, and the slots are received by an interfered user device obtaining the encoded values and comparing to parameter patterns indicating absence of modifications in the CRSs, wherein if the encoded values are different from the patterns, the interfered user device decodes them to perform interference cancellation of the downlink signal.

公开(公告)号：US09742535B2

公开(公告)日：2017-08-22

申请号：US14579304

申请日：2014-12-22

Applicant: Telefonica, S.A.

Inventor： Javier Lorca Hernando

IPC: H04L5/00 ,  H04L25/03 ,  H04J11/00

CPC classification number: H04L5/0048 ,  H04J11/00 ,  H04L5/0005 ,  H04L5/0007 ,  H04L25/03006 ,  H04L25/03866

Abstract: A method for performing virtualization of a radio access technology (RAT) over Orthogonal Frequency-Division Multiple Access (OFDMA) wireless networks is provided. The method includes splitting OFDMA time-frequency resources into non-overlapping regions including a virtualization region including a part of a spectrum and the OFDMA symbols that are reserved for virtualization of the RAT; reserving resource elements of the OFDMA time-frequency resources in the virtualization region, for insertion of downlink reference signals including complex sequences known by a receiver to perform downlink channel estimation with a specified separation between signals in time and frequency domains; inserting training or pilot signals along the OFDMA time-frequency resources of the virtualization region; and mapping complex baseband symbols corresponding to information from the RAT into the OFDMA time-frequency resources of the virtualization region.