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
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
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.
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.
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.
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.
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(
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
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
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.
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, . . .
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
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 data block (e.g. a packet) without using error detection codes that may impair spectral efficiency (due to the overhead) especially when very small size packets are used. In order to do that, it generates a decision variable with the aim to check whether a received block has errors or not, without resorting to the use of error-detection codes.
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(
Abstract: A network controller and a method for automatically define forwarding rules to configure a computer networking device, The network controller (100) is connected to a sub-network (A) of a communication network and comprises: a controller manager (101) that receives a request for a given service, defines forwarding rules related to said service and installs the defined forwarding rules into a computer networking device (120a) in order to configure it for said given service; a deciding module (102) configured to communicate with the controller manager (101) and configured to interact with a DNS server (150) to receive a determined resolution for a DNS request of said request for said given service, and with a database (300) to retrieve information supplementary for the DNS request, in order to assist the controller manager (101) in performing the defining of the forwarding rules; and a plurality of interfaces (SA, SB, SD) for allowing the communication between the different elements.
Type:
Grant
Filed:
November 13, 2015
Date of Patent:
October 31, 2017
Assignee:
Telefonica, S.A.
Inventors:
Luis Miguel Contreras, Diego R. Lopez, Antonio Agustin Pastor
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:
Application
Filed:
April 6, 2017
Publication date:
October 12, 2017
Applicant:
Telefonica, S.A.
Inventors:
Pedro A. ARANDA GUTIÉRREZ, Diego R. LOPEZ, Norisy C. OREA BARRIOS
Abstract: A system and method for managing subscriber mobile devices comprising: a home network (400) of a first mobile network operator (MNO1), in which data associated with at least one physical SIM of a subscriber device with an embedded SIM card (eUICC) is obtained, and a destination network (300) of a second mobile network operator (MNO2) which the device travels to, obtaining static data and dynamic data associated with at least one virtual SIM (503, 603) of the device. The dynamic data comprise a subscriber authentication key (Ki) and is obtained from a SIM provider platform (500, 600) on which the destination network (300) relies. The static data comprise IMSI/MSISDN identities and is stored in a pool (202) of the destination network (300). For a given virtual SIM, it is checked whether there is an association in a mapping table (106) of the first mobile network operator (MNO1) between the static data from the pool (202) and the physical SIM data from the home network (400).
Type:
Grant
Filed:
December 18, 2015
Date of Patent:
October 10, 2017
Assignee:
Telefonica, S.A.
Inventors:
Ana Isabel Flores Cuadrado, Maria Antonia Lopez Ajenjo, Ana Sobrino Jular
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.
Abstract: A system and method are provided for reducing the overhead caused by the presence of the cyclic prefix while enabling inter-carrier interference (ICI) and inter-symbol interference (ISI) cancellation in an Orthogonal Frequency Division Multiplexing (OFDM) network that includes an OFDM transmitter and an OFDM receiver.
Abstract: The method comprises mapping software-based network functions to hardware resources included in a hardware resource pool, wherein the mapping is performed dynamically on unallocated resources of the hardware resource pool and based on at least the next information: specific hardware constraints for the supporting of each of said software-based network functions; network requirements of at least one defined networking service design for a service making use of said hardware resource pool and of at least part of said software-based network functions; and a hardware description of the hardware resources included in the hardware resource pool. The system is configured for implementing the method of the invention. The computer program product is adapted to perform the method of the invention.
Type:
Grant
Filed:
December 19, 2013
Date of Patent:
September 26, 2017
Assignee:
Telefonica, S.A.
Inventors:
Francisco Javier Ramón Salguero, Pedro Andrés Aranda Gutiérrez, Alfonso Tierno Sepúlveda, Rafael Alejandro Lopez Da Silva