Abrégé

A method for data storage is applied to a cloud system that includes a plurality of virtual machines (VMs) and a control device. The method is performed by the control device. The method includes: receiving at least two requests from at least two VMs among the plurality of VMs, a request from each VM of the at least two VMs being used to indicate protected information of the VM; and mapping protected information of the at least two VMs to a first area of a cache. This can increase the difficulty for an attacker to carry out a side-channel attack, enhance the protection of information of each VM, and in turn avoid side-channel attacks.

Classes IPC  ?

• G06F 9/455 - ÉmulationInterprétationSimulation de logiciel, p. ex. virtualisation ou émulation des moteurs d’exécution d’applications ou de systèmes d’exploitation

Abrégé

The present disclosure provides modules, arrays and methods for interferometric receivers for dual-band and dual-polarization signal modulation where the module comprises a plurality of oscillators for generating a plurality of carrier signals of a plurality of frequency bands, and a multiport circuit connected to the plurality of oscillators. The multiport circuit having a plurality of inputs each for receiving one of the plurality of carrier signals, a plurality of outputs, a plurality of quadrature hybrid couplers, power dividers, and power detectors.

Classes IPC  ?

• H01P 5/16 - Dispositifs à accès conjugués, c.-à-d. dispositifs présentant au moins un accès découplé d'un autre accès
• H03K 17/687 - Commutation ou ouverture de porte électronique, c.-à-d. par d'autres moyens que la fermeture et l'ouverture de contacts caractérisée par l'utilisation de composants spécifiés par l'utilisation, comme éléments actifs, de dispositifs à semi-conducteurs les dispositifs étant des transistors à effet de champ
• H04L 27/38 - Circuits de démodulationCircuits récepteurs

Abrégé

A method of signal compensation in wireless communications is described. The method includes receiving a signal that has been distorted by a transmitter. This signal includes in-band (IB) components that include both data and distortion, and out-of-band (OOB) components that are indicative of distortion. The method includes decomposing the received signal to distinguish between the IB and OOB components. It then uses the content within the OOB components to reduce the distortion and produce a compensated signal. An apparatus and one or more non-transitory computer-readable storage devices configured to perform this method are also disclosed. With the embodiments described herein, improved signal fidelity is achieved, allowing for improved receiver performance without the need for additional reference signals or complex transmitter-side compensation mechanisms.

Classes IPC  ?

• H04B 1/10 - Dispositifs associés au récepteur pour limiter ou supprimer le bruit et les interférences
• H04B 1/12 - Montages de neutralisation, d'équilibrage ou de compensation

Abrégé

The present disclosure provides modules, arrays and methods for interferometric transmitters for dual-band and dual-polarization signal modulation where the module has a plurality of oscillators for generating a plurality of carrier signals of a plurality of frequency bands, and a multiport network connected to the plurality of oscillators. The multiport network having a plurality of inputs each for receiving one of the plurality of carrier signals, a plurality of outputs, and a plurality of reflection paths between the plurality of inputs and the plurality of outputs. Each of the plurality of reflection paths has a variable reflection coefficient for modulating the plurality of carrier signals to output a plurality of modulated radio-frequency (RF) signals of the plurality of frequency bands via the plurality of outputs.

Classes IPC  ?

• H04B 1/04 - Circuits
• H03F 3/24 - Amplificateurs de puissance, p. ex. amplificateurs de classe B, amplificateur de classe C d'étages transmetteurs de sortie
• H03F 3/68 - Combinaisons d'amplificateurs, p. ex. amplificateurs à plusieurs voies pour stéréophonie

Abrégé

A method of signal compensation in wireless communications is described. The method includes receiving a signal that has been distorted by a transmitter. This signal includes in-band (IB) components that include both data and distortion, and out-of-band (OOB) components that are indicative of distortion. The method includes decomposing the received signal to distinguish between the IB and OOB components. It then uses the content within the OOB components to reduce the distortion and produce a compensated signal. An apparatus and one or more non-transitory computer-readable storage devices configured to perform this method are also disclosed. With the embodiments described herein, improved signal fidelity is achieved, allowing for improved receiver performance without the need for additional reference signals or complex transmitter-side compensation mechanisms.

Classes IPC  ?

• H04B 1/04 - Circuits
• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples

Abrégé

A signal transceiver includes a driver, an interference removal circuit and a split-termination resistor. The interference removal circuit includes a first passive circuit and a second passive circuit. The interference removal circuit has a first port connected to an output terminal of the driver, for receiving an outbound signal output by the driver. The interference removal circuit has a second port used to output the outbound signal and receive an inbound signal. The interference removal circuit has a third port and a fourth port that are used to output a recovery signal, where the recovery signal is the inbound signal after an interference caused by the outbound signal removed by the first passive circuit and the second passive circuit. The split-termination resistor is connected between the first port and the second port. The first passive circuit is connected between the first port and the third port, and the second passive circuit is connected between the second port and the fourth port.

Classes IPC  ?

• H03H 11/04 - Réseaux sélectifs en fréquence à deux accès

Abrégé

Aspects of the present disclosure provide a waveguide assembly that employs a non-radiative dielectric waveguide at a bend and a dielectric waveguide away from the bend. By implementing a non-radiative dielectric wave guide at the bend and a dielectric waveguide away from the bend the power dissipated during propagation can be minimized without necessitating an increase in the size of the system. A method of manufacture of the waveguide assembly is also provided.

Classes IPC  ?

• H01P 3/16 - Guides d'ondes diélectriques, c.-à-d. sans conducteur longitudinal
• H01P 1/02 - CoudesCornièresTorsades
• H01P 5/12 - Dispositifs de couplage présentant au moins trois accès
• H01P 11/00 - Appareils ou procédés spécialement adaptés à la fabrication de guides d'ondes, résonateurs, lignes ou autres dispositifs du type guide d'ondes

Abrégé

A module has an input port, an output port, and a first and a second conductive path arranged in parallel and connecting the input port and the output port, the first path having a first pulse compressor, and the second path having a second pulse compressor and a delay element. The module is suitable for generating a Gaussian doublet pulse, where the first pulse compressor is for providing rise-time compression, the second pulse compressor is for providing fall-time compression, and the delay element is adjustable. The module may further have a pulse-forming network for transforming the Gaussian doublet pulse to a monocycle doublet pulse. Each of the first pulse compressor, the second pulse compressor and the delay network may be non-linear transmission lines.

Classes IPC  ?

• H03K 5/01 - Mise en forme d'impulsions
• H03K 5/00 - Transformation d'impulsions non couvertes par l'un des autres groupes principaux de la présente sous-classe

Abrégé

A module has two portions, each portion has two units provides an analog-type attenuator-tuning approach having digital control. Each of the units includes an input, an output, three selectable conductive paths, and an input switching element for selectably connecting the unit input to the unit output via one of the three selectable conductive paths. The first and second paths have attenuation elements. The unit output of the first unit of each portion is connected to the unit input of the second unit thereof and the unit output of the via one of the three selectable conductive paths, the unit output of the first unit of each portion is connected to the unit input of the second unit thereof, and the unit output of the second unit of the first portion is connected to the unit input of the first unit of the second portion.

Classes IPC  ?

• H03H 17/00 - Réseaux utilisant des techniques numériques
• H10N 70/00 - Dispositifs à l’état solide n’ayant pas de barrières de potentiel, spécialement adaptés au redressement, à l'amplification, à la production d'oscillations ou à la commutation
• H10N 70/20 - Dispositifs de commutation multistables, p. ex. memristors

Abrégé

Apparatus, systems, and methods for a transmitter array for enhanced communication systems may be provided. According to an aspect a transmitter array may be provided. The transmitter array may include a plurality of equivalent transmitter units. Each equivalent transmitter unit may include an antenna and a QPSK modulator. Each equivalent transmitter unit may be selectively activatable. In some embodiments, upon activation of a set of equivalent transmitter units selected from the plurality of equivalent transmitter units, a desired modulated output signal is generated. According to another aspect, a method of generating a desired modulated output signal may be provided. The method may include receiving a plurality of local oscillator (LO) signals at a transmitter array. The method may further include selectively activating a set of equivalent transmitter units of the plurality of equivalent transmitter units to generate the desired modulated output signal.

Classes IPC  ?

• H04L 27/20 - Circuits de modulationCircuits émetteurs
• H04B 1/00 - Détails des systèmes de transmission, non couverts par l'un des groupes Détails des systèmes de transmission non caractérisés par le milieu utilisé pour la transmission
• H04L 27/36 - Circuits de modulationCircuits émetteurs

Abrégé

A method, apparatus and system for cooperatively classifying objects in an autonomous vehicle environment are provided. A controller receives data quality indicators from multiple devices. Each data quality indicator reflects quality of an instance of object sensing data held by a device. Each device determines its data quality indicators based on its own sensor data and indications of object bounding regions. The controller makes decisions based at least in part on the data quality indicators, such as decisions on which instances of object sensing data are to be used for an object classification task, which device is to perform the object classification task, any downsampling of sensor data to be performed prior to object classification, and allocations of resources for use in object classification. The decision may be made by solving an optimization problem.

Classes IPC  ?

• G06V 20/58 - Reconnaissance d’objets en mouvement ou d’obstacles, p. ex. véhicules ou piétonsReconnaissance des objets de la circulation, p. ex. signalisation routière, feux de signalisation ou routes
• G06F 9/50 - Allocation de ressources, p. ex. de l'unité centrale de traitement [UCT]

Abrégé

The present disclosure relates to methods and modules for link adaptation in a network system comprising an access point (AP) linked to one or more stations through one or more links. The stations generate a set of quality of service provisioning link adaptation (QPLA) parameters, which comprise a data rate requirement, a packet error rate (PER) requirement, and a performance preference. The AP receives the QPLA parameters and determines link adaptation for each of the one or more stations based on the QPLA parameters.

Classes IPC  ?

• H04W 72/543 - Critères d’affectation ou de planification des ressources sans fil sur la base de critères de qualité sur la base de la qualité demandée, p. ex. QdS [QoS]

Abrégé

Methods and apparatus for wireless communication using a matrix of reconfigurable cells is provided. Each cell has an antenna or antenna port and is reconfigurable to operate as a transmitter, receiver, angle-of-arrival detector or power harvester. Cells can be allocated to different tasks as needed. A reference frequency signal is distributed to each cell, with an in-phase version of the signal being delivered to a first subset of cells, and a quadrature version of the signal being delivered to a second subset of cells. The first and second subsets may be interleaved for example in a checkerboard pattern. Cells cooperate in pairs for transmission or reception of quadrature amplitude modulated signals. Groups of four cells may cooperate for angle of arrival detection. The cells may be configured as interferometric transmitter/receiver cells using 90 degree hybrid couplers and power detectors.

Classes IPC  ?

• H04L 5/12 - Canaux caractérisés par le type de signal les signaux étant représentés par différentes modulations de phase d'une seule porteuse
• H04B 7/06 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station d'émission
• H04B 7/08 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station de réception

Abrégé

An optical modulation device including a substrate defining a recess on a top surface thereof, an optical waveguide configured for guiding an optical signal therein, the optical waveguide being disposed in the recess, a first stack assembly disposed on the top surface of the substrate and at least partially above the optical waveguide and a second stack assembly disposed on the top surface of the substrate and at least partially above the optical waveguide is disclosed. The first and second stack assemblies extend parallel to each other on an active portion of the optical waveguide, the first and second stack assemblies being separated by a gap, each of the first and second stack assemblies including a cathode layer, an inorganic semi-conductive material film disposed atop the cathode layer, an insulating coating disposed atop the inorganic semi-conductive material film and an anode layer disposed on the insulating coating.

Classes IPC  ?

• G02F 1/025 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p. ex. commutation, ouverture de porte ou modulationOptique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur basés sur des éléments à semi-conducteurs ayant des barrières de potentiel, p. ex. une jonction PN ou PIN dans une structure de guide d'ondes optique

Abrégé

System, methods and apparatuses for cumulative deep neural network (DNN) inference are provided. There is provided a data-driven cumulative DNN inference method which can aggregate multiple fast DNN inference results to obtain a cumulative DNN inference result and provide an improved cumulative confidence level. There is further provided a method for cumulative DNN inference, which can provide adaptive selection between a fast DNN inference, with low computing demand but low confidence level, and a full DNN inference, with high computing demand but high confidence level.

Classes IPC  ?

• G06N 3/08 - Méthodes d'apprentissage
• G06N 3/045 - Combinaisons de réseaux

Abrégé

Methods and systems and devices for adaptively updating digital predistortion parameters for a power amplifier distortion model in a wireless communications network base station. The updated parameters are determined by a computing device separate from the base station. The base station monitors one or more operating conditions. When an operating condition differs from a stored operating condition by more than a threshold amount, the base station requests a parameter update from the computing device and receives a scheduled time to submit signals. Power amplifier input and output signals are provided to the computing device at the schedule time and the computing device determines the updated power amplifier distortion model and, consequently, the updated predistortion parameters, which it provides to the base station.

Classes IPC  ?

• H03F 1/32 - Modifications des amplificateurs pour réduire la distorsion non linéaire
• H03F 3/24 - Amplificateurs de puissance, p. ex. amplificateurs de classe B, amplificateur de classe C d'étages transmetteurs de sortie
• H04B 1/04 - Circuits

Abrégé

A distributed ledger for vehicle transactions is provided. Also provided is a method of validating vehicle transactions, a method of obtaining a consensus on vehicle transactions, a method of entering data into a distributed ledger and a method of logging vehicle transactions. For each transaction of vehicle transactions, an agreement on a timestamp of the transaction is obtained to form a set of agreed transactions. For the ordered group of the agreed transactions, a consensus on a validity of the group of agreed transactions is obtained. The methods and systems of the present disclosure are specifically designed to address the consensus problem in the context of V2X but may also serve to reach consensus in other contexts. Furthermore, it enables reaching consensus with low latency and high throughput, and dynamic membership changes. It also requires limited (less) memory use to store consensus results. In embodiments, the ordering and commit are separated in achieving consensus (allowing parallel ordering which is quicker, thus lower ordering latency and higher throughput).

Classes IPC  ?

• G06F 21/64 - Protection de l’intégrité des données, p. ex. par sommes de contrôle, certificats ou signatures

Abrégé

A module for modulation and demodulation using two substantially identical self-oscillating mixers (SOMs) injection-locked at a coupling frequency, providing a simple compact, low power, highly efficient receiver, transmitter or transceiver. The module suitable for quadrature amplitude-modulation where the coupling frequency is the second harmonic frequency of the SOMs and the SOMs oscillate 180 degrees out of phase relative to one another. Use of carrier frequencies at a fundamental harmonic frequency or odd multiples thereof provide high isolation between the SOMs at the carrier frequency. A method for modulation and demodulation includes injection-locking the two SOMs at a coupling frequency.

Classes IPC  ?

• H03L 7/24 - Commande automatique de fréquence ou de phaseSynchronisation utilisant un signal de référence directement appliqué au générateur
• H03B 5/12 - Éléments déterminant la fréquence comportant des inductances ou des capacités localisées l'élément actif de l'amplificateur étant un dispositif à semi-conducteurs
• H03D 7/12 - Transfert de modulation d'une porteuse à une autre, p. ex. changement de fréquence au moyen de dispositifs à semi-conducteurs ayant plus de deux électrodes
• H03D 7/14 - Montages équilibrés

Abrégé

A device includes one or more controllers and multiple spatially distributed receivers. Each receiver is controllable by the one or more controllers between an activated state in which the receiver is operable to detect an incoming signal, and a deactivated state in which the receiver is not operable to detect the incoming signal. At least a first receiver and a second receiver of the receivers, each in the activated state, are configured to demodulate the incoming signal by: demodulating with the first receiver an in-phase component of the incoming signal; and demodulating with the second receiver a quadrature component of the incoming signal.

Classes IPC  ?

• H04B 1/16 - Circuits
• H01Q 21/06 - Réseaux d'unités d'antennes, de même polarisation, excitées individuellement et espacées entre elles
• H04B 1/12 - Montages de neutralisation, d'équilibrage ou de compensation

Abrégé

A device for generating a radio frequency (RF) beam includes an array of independent unit cells. Each unit cell includes RF sources configured to generate terahertz (THz) signals, and antennas coupled to the RF sources for transmitting THz waves based on the THz signals. The device further includes switches configured to selectively bias each unit cell between an activated state in which the antennas of the unit cell are operable to transmit the THz waves, and a deactivated state in which the antennas of the unit cell are prevented from transmitting the THz waves. The device further includes circuitry configured to control the switches to generate the RF beam based on the THz waves transmitted by the antennas of each unit cell in the activated state.

Classes IPC  ?

• H04B 10/50 - Émetteurs
• H04B 10/60 - Récepteurs
• H04B 10/61 - Récepteurs cohérents

Abrégé

The present disclosure provides modules, systems and methods for a cooperative radar-communication (RadCom) wherein transmitters, receivers, and/or transceivers alternate between radar and radio communications in time slots using methods such as time division multiplexing (TDMA), wherein receivers and/or transceivers may be interferometric and the interferometric receivers and/or transceivers may also use balanced detection in radar and communication modes for providing modules, systems and methods requiring a lower dynamic range resulting in increased performance and lower power consumption requirements. An embodiment of the present disclosure relates to modules, systems and methods for radar using transmitters, receivers, transceivers, and/or radio using interferometric receivers and/or transceivers using balanced detection.

Classes IPC  ?

• G01S 13/82 - Systèmes utilisant la reradiation d'ondes radio, p. ex. du type radar secondaireSystèmes analogues dans lesquels des signaux de type continu sont transmis
• G01S 7/02 - Détails des systèmes correspondant aux groupes , , de systèmes selon le groupe

Abrégé

A waveguide coupler with integrated polarization is a module including one or more H-plane ports, two or more E-plane ports and a coupling element for transforming between H-plane port and E-plane ports. The coupling element including two or more coupling sections having a cavity and symmetrical about a symmetry plane. One or more of the symmetrical coupling sections having two or more grooves along a common side and at least one symmetrical coupling section having obstructions that may partially overlap with the two or more grooves. The grooves and obstructions are symmetrical about the symmetry plane. In an embodiment, the module is a four-port waveguide coupler having two H-plane port and two E-plane ports. In an embodiment, the ports are offset relative to the symmetry plan by forty-five degrees forming a cruciform waveguide coupler.

Classes IPC  ?

• H01P 5/18 - Dispositifs à accès conjugués, c.-à-d. dispositifs présentant au moins un accès découplé d'un autre accès consistant en deux guides couplés, p. ex. coupleurs directionnels
• H01P 1/165 - Dispositifs auxiliaires pour faire tourner le plan de polarisation

Abrégé

Methods and processors for inferring constraints for reinforcement learning of an Artificial Intelligence (AI) model for subsequent deployment of that AI model in an environment. The method includes accessing a set of expert trajectories, each expert trajectory comprising a sequence of expert state-action pairs, a given one of the sequences of the expert state-action pairs including information about a given state of the environment and a corresponding action that is to be executed in response to the given state, partitioning the set of expert trajectories into one or more subsets of expert trajectories by employing a trained neural network, each subset being associated with one of the agents and determining, for each agent, an agent constraint based on the corresponding subset of expert trajectories.

Classes IPC  ?

• G06N 3/092 - Apprentissage par renforcement

Abrégé

Methods and systems for executing confidence-aware reinforcement learning for an Artificial Intelligence (AI) model for subsequent deployment of that AI model in an environment are disclosed. The method includes accessing a set of expert trajectories, each expert trajectory comprising a sequence of expert state-action pairs, the expert entities complying with an expert constraint that is unknown. The method also includes generating a main constraint for the set of expert trajectories, the main constraint being conditioned on a pre-determined confidence level, the pre-determined confidence level being indicative of a probability that the main constraint is at least as constraining as the expert constraint, the main constraint comprising one or more rules limiting the actions that are executable by the AI model, determining a target policy among a plurality of policies, the target policy complying with the main constraint and executing the target policy by the AI model.

Classes IPC  ?

• G06N 3/092 - Apprentissage par renforcement

Abrégé

A distributed feedback (DFB) semiconductor laser assembly is disclosed. The DFB laser assembly includes a substrate extending along a longitudinal direction, a first electrode layer disposed on a first side surface thereof, an active region layer disposed on a second side surface thereof opposite the first side surface, and a spacer layer disposed on the active region layer. A ridge extends away from the active region layer and along the longitudinal direction. The DFB laser assembly also includes a grating layer integrated between the active region layer and the ridge, the grating layer including a plurality of sampled gratings along the longitudinal direction, and a second electrode layer electrically coupled to the first electrode layer, the second electrode layer comprising independent electrode sections disposed on the top ridge surface and each ridge side surface.

Classes IPC  ?

• H01S 5/12 - Structure ou forme du résonateur optique le résonateur ayant une structure périodique, p. ex. dans des lasers à rétroaction répartie [lasers DFB]
• H01S 5/183 - Lasers à émission de surface [lasers SE], p. ex. comportant à la fois des cavités horizontales et verticales comportant uniquement des cavités verticales, p. ex. lasers à émission de surface à cavité verticale [VCSEL]
• H01S 5/30 - Structure ou forme de la région activeMatériaux pour la région active

Abrégé

Fiber amplifiers for extending their gain bandwidth through an optimization of the host matrix using phosphorus/aluminum (P/Al) as glass modifier are provided. In one aspect, an optical glass fiber comprising an Erbium doped silicate is provided, where the optical glass fiber comprises P2O5 of greater than 6 mol %; and Al2O3 of between 1.5 and 6 mol %, where a molar percent ratio of the P2O5 and the Al2O3 is between 2 and 4. Further, in some cases, use of yttrium as an alternative co-dopant to ytterbium may be used.

Classes IPC  ?

• C03C 13/04 - Fibres optiques, p. ex. compositions pour le cœur et la gaine de fibres

Abrégé

Cidid Crvatrvσ'uσ'Cidid id .

Classes IPC  ?

• H04L 9/32 - Dispositions pour les communications secrètes ou protégéesProtocoles réseaux de sécurité comprenant des moyens pour vérifier l'identité ou l'autorisation d'un utilisateur du système
• H04W 12/06 - Authentification

Abrégé

Methods, apparatuses, and storage media are for phase noise resilient hybrid beamforming comprising using a deep neural network (DNN) for pre distortion of a signal for communication including mmWave and MIMO orthogonal frequency division multiplexing (MIMO OFDM) transmission, where symbol indices of each frame of the signal treated as exogenous variables of the DNN.

Classes IPC  ?

• H04B 7/06 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station d'émission
• H04B 7/0413 - Systèmes MIMO

Abrégé

Methods, apparatus, and systems are disclosed for collaborative link adaptation between an access point and stations of a wireless network. In embodiments of the present disclosure, the problem of optimizing network links may be distributed from the access point to the stations, which may each determine whether they should locally solve the problem of optimizing their respective link to the access point or should return the optimization problem to the access point. The access point may optimize the links to stations that do not solve the optimization problem themselves. Embodiments may evaluate the transmission performance and computational costs of each station and of the network in determining where optimization should be done.

Classes IPC  ?

• H04W 24/02 - Dispositions pour optimiser l'état de fonctionnement
• H04W 52/34 - Gestion du TPC, c.-à-d. partage de la quantité limitée de puissance entre les utilisateurs ou les canaux ou encore les types de données, p. ex. charge des cellules

Abrégé

Methods, apparatus, and systems are disclosed for collaborative link adaptation between an access point and stations of a wireless network. In embodiments of the present disclosure, the problem of optimizing network links may be distributed from the access point to the stations, which may each determine whether they should locally solve the problem of optimizing their respective link to the access point or should return the optimization problem to the access point. The access point may optimize the links to stations that do not solve the optimization problem themselves. Embodiments may evaluate the transmission performance and computational costs of each station and of the network in determining where optimization should be done.

Classes IPC  ?

• H04W 28/08 - Équilibrage ou répartition des charges
• H04W 28/086 - Équilibrage ou répartition des charges entre les entités d’accès

Abrégé

Methods and systems for federated learning with client clustering are described. A central server conducts rounds of intra-cluster training with two or more clusters to learn, for each cluster, a set of cluster parameters for a respective cluster model. The server merges two clusters into a new merged cluster by communicating, to each client of the two clusters, the cluster parameters of each of the two clusters. The server receives, from each client of the two clusters, performance indicators based on performance of each set of cluster parameters at each client. The central server determines, from the performance indicators, that one of the two clusters should be merged with the other cluster, and defines the new merged cluster to be a union of the two clusters. One set of cluster parameters is selected to be the cluster parameters for the new merged cluster.

Classes IPC  ?

• G06N 20/00 - Apprentissage automatique

Abrégé

A phased antenna array is operable to generate a radio-frequency beam having a first beam angle. A converging lens adjusts the beam generated by the phased antenna array to output a first adjusted beam. A diverging lens adjusts the first adjusted beam to output a second adjusted beam having a second beam angle. The converging lens and the diverging lens are positioned relative to the phased antenna array such that the second beam angle is greater than the first beam angle, such that a scan range of the phased antenna array is increased.

Classes IPC  ?

• H01Q 21/00 - Systèmes ou réseaux d'antennes
• H01Q 15/00 - Dispositifs pour la réflexion, la réfraction, la diffraction ou la polarisation des ondes rayonnées par une antenne, p. ex. dispositifs quasi optiques
• H01Q 25/00 - Antennes ou systèmes d'antennes fournissant au moins deux diagrammes de rayonnement

Abrégé

A waveguide crossover module has a first waveguide for a first signal to propagate therethrough and a second waveguide for a second signal to propagate therethrough. The first waveguide and the second waveguide intersect at a perpendicular angle with a first pair of metal plates coupled to opposing sides of the waveguides about the intersection. The waveguides may be made of a dielectric material, and may have apertures therein. The waveguides may be surrounded by air overlays, low refractive index regions, or metal strips adjacent the metal plates. The metal plates may be arranged either symmetrically or asymmetrically about the intersection, may be of any suitable shape. The first signal and the second signal may have overlapping or non-overlapping frequency ranges.

Classes IPC  ?

• H01P 1/00 - Dispositifs auxiliaires
• H01P 3/16 - Guides d'ondes diélectriques, c.-à-d. sans conducteur longitudinal
• H01P 5/19 - Dispositifs à accès conjugués, c.-à-d. dispositifs présentant au moins un accès découplé d'un autre accès du type à jonction

Abrégé

A full-duplex transceiver includes a dual-polarized antenna, a dual-mode waveguide circulator, and at least a receiver port and a transmitter port. The dual-polarized antenna is configured to transmit first electromagnetic waves polarized by the dual-polarized antenna according to a first polarization, and receive second electromagnetic waves polarized according to a second polarization orthogonal to the first polarization. In response to electromagnetic waves being received at the transmitter port, the waveguide circulator guides a TE10 mode of the electromagnetic waves to the antenna for coupling the TE10 mode of the electromagnetic waves to the antenna and polarizing the electromagnetic waves according to the first polarization to form the first electromagnetic waves. In response to the second electromagnetic waves being received at the antenna, the waveguide circulator couples a TE20 mode of the second electromagnetic waves and guides the TE20 mode of the second electromagnetic waves to the receiver port.

Classes IPC  ?

• H01Q 25/04 - Antennes multimodes
• H04B 1/40 - Circuits

Abrégé

A method executed by a receiving device for providing feedback to a plurality of transmitting devices regarding reception of data packets transmitted from the transmitting devices include determining that one or more first packets transmitted from one or more first communication devices of the transmitting devices are received and decoded, adding one or more identifiers of the one or more first communication devices to a feedback section of a message, and broadcasting the message to the transmitting devices. The determination of adding the identifiers of the one or more first communication devices to the message is based on one or more channel thresholds. The transmitting devices, after receiving the message, checks if an amplitude of the channel is smaller than a first threshold, checking if retransmission of the data packet is required based on the message, and retransmitting the data packet if the retransmission of the data packet is required.

Classes IPC  ?

• H04W 48/10 - Distribution d'informations relatives aux restrictions d'accès ou aux accès, p. ex. distribution de données d'exploration utilisant des informations radiodiffusées
• H04W 74/0833 - Procédures d’accès aléatoire, p. ex. avec accès en 4 étapes

Abrégé

Provided herein is a method and system for managing multiple Access Points (APs) in a wireless network utilizing a multi-dimensional, cluster-based coordination scheme, known as a hybrid scheme. The hybrid scheme harmonizes the frequency and spatial domains to achieve consistent Signal-to-Interference Ratio (SIR) for all Main Access Points (M-AP) and Secondary Access Points (S-AP) Service Station Adaptors (STAs). The system integrates both the spatial and frequency dimensions, aligning them for effective coordination. Through this scheme, the design goal of maintaining a certain SIR level across every M-AP and S-APs' STA is achieved. In various implementations, the hybrid scheme may apply specific algorithms for coordinating the M-APs and S-APs, thereby optimizing the wireless network's performance. Some embodiments may utilize advanced technologies or unique approaches to enhance the efficiency of the hybrid coordination scheme.

Classes IPC  ?

• H04W 24/02 - Dispositions pour optimiser l'état de fonctionnement
• H04W 48/20 - Sélection d'un point d'accès
• H04W 52/24 - Commande de puissance d'émission [TPC Transmission power control] le TPC étant effectué selon des paramètres spécifiques utilisant le rapport signal sur parasite [SIR Signal to Interference Ratio] ou d'autres paramètres de trajet sans fil

Abrégé

A module has a transmitter (Tx) antenna and a receiver (Rx) antenna. At least one of the Tx and Rx antennas has a leaky-wave antenna (LWA) array for transmitting or receiving one or more signal beams with a range resolution and an angle resolution. The LWA array has a plurality of LWAs configured as a filter bank. By using the filter bank based LWAs, the LWA array may coherently stitch or combine the individual spectrums of the LWAs to have a wide frequency-space coverage for providing improved range and/or angle resolutions.

Classes IPC  ?

• H01Q 13/20 - Antennes constituées par un guide non résonnant à ondes de fuite ou une ligne de transmissionStructures équivalentes produisant un rayonnement le long du trajet de l'onde guidée
• H01Q 3/00 - Dispositifs pour changer ou faire varier l'orientation ou la forme du diagramme de directivité des ondes rayonnées par une antenne ou un système d'antenne

Abrégé

There is provided a method and apparatus associated with cluster-based parallel split learning. The method includes a network controller distributing a client-side model to a plurality of client devices in a cluster. The method also includes a server receiving a plurality of transmissions from each of the client devices, each transmission including smashed data and information about data used to generate the smashed data, and the server generating a gradient associated with the smashed data based at least in part on the transmissions. The method includes the server transmitting the gradient associated with the smashed data to the client devices, and the network controller receiving updated client-side models from each of the client devices. The method also includes the network controller generating an aggregated client-side model based on the received updated client-side models and transmitting the aggregated client-side model to a second cluster of client devices.

Classes IPC  ?

• H04L 41/0893 - Affectation de groupes logiques aux éléments de réseau
• G06N 20/00 - Apprentissage automatique
• H04L 41/16 - Dispositions pour la maintenance, l’administration ou la gestion des réseaux de commutation de données, p. ex. des réseaux de commutation de paquets en utilisant l'apprentissage automatique ou l'intelligence artificielle

Abrégé

A system and method for generating training data for fine-tuning an Object Detector (OD) are provided. The method comprises: receiving a given sequence of labelled 3D point clouds of the source domain; selecting, in the sequence bounding boxes, a quasi-stationary bounding box that is a most overlapped bounding box by other bounding boxes from the sequence of bounding boxes; generating a re-labelled 3D point cloud of the source domain by relocating, in the given labelled 3D point cloud, the respective bounding box of the training object to a location thereof corresponding to a location of the quasi-stationary bounding box in an other labelled 3D point cloud; and storing the re-labelled 3D point cloud of the source domain in an internal memory of the server.

Classes IPC  ?

• G06V 10/774 - Génération d'ensembles de motifs de formationTraitement des caractéristiques d’images ou de vidéos dans les espaces de caractéristiquesDispositions pour la reconnaissance ou la compréhension d’images ou de vidéos utilisant la reconnaissance de formes ou l’apprentissage automatique utilisant l’intégration et la réduction de données, p. ex. analyse en composantes principales [PCA] ou analyse en composantes indépendantes [ ICA] ou cartes auto-organisatrices [SOM]Séparation aveugle de source méthodes de Bootstrap, p. ex. "bagging” ou “boosting”
• G06V 10/762 - Dispositions pour la reconnaissance ou la compréhension d’images ou de vidéos utilisant la reconnaissance de formes ou l’apprentissage automatique utilisant le regroupement, p. ex. de visages similaires sur les réseaux sociaux
• G06V 20/70 - Étiquetage du contenu de scène, p. ex. en tirant des représentations syntaxiques ou sémantiques

Abrégé

A photonic device which is configured to implement a recurrent neural network via reservoir computing is provided. The device includes a feed portion which mixes an input signal with previously generated and controllably attenuated portions of an output signal. The device further includes one or more propagating stages coupled to the feed portion. Each propagating stage propagates signals through a loop in both clockwise and counterclockwise directions, for example to be affected by nonlinear elements. The arrangement of the photonic device causes a nonlinear activation function to be realized by the propagating stages. The nonlinear activation function may be adjustable by adjusting various controllable elements in the device.

Classes IPC  ?

• G06N 3/067 - Réalisation physique, c.-à-d. mise en œuvre matérielle de réseaux neuronaux, de neurones ou de parties de neurone utilisant des moyens optiques
• G02F 1/35 - Optique non linéaire
• G02F 1/365 - Optique non linéaire dans une structure de guide d'ondes optique
• G06N 3/048 - Fonctions d’activation
• G06N 3/049 - Réseaux neuronaux temporels, p. ex. éléments à retard, neurones oscillants ou entrées impulsionnelles

Abrégé

An optical grating comprising a refractive index with a periodic pattern that includes a base period Λ0; a periodic sampling of the base period, with a first period Λ1 and a first duty cycle p1, thereby defining a single-sampled grating (SSG); and a periodic sampling of the SSG, with a second period Λ2 and a second duty cycle p2. The resulting dual-sampled grating (DSG) can have a reflection spectrum containing reflection peaks. If two DSGs having different reflection spectra share a common interface, a tunable optical filter can be produced, where electrical or heating means can cause a reflection peak of one spectrum to be shifted to coincide with a reflection peak of the other spectrum, thereby filtering the corresponding wavelength. By inserting between the two DSGs a gain medium and a phase-tuning medium, a laser source structure is realized. Either device can be produced by etching or stacking methods.

Classes IPC  ?

• H01S 5/183 - Lasers à émission de surface [lasers SE], p. ex. comportant à la fois des cavités horizontales et verticales comportant uniquement des cavités verticales, p. ex. lasers à émission de surface à cavité verticale [VCSEL]
• G02B 5/18 - Grilles de diffraction
• H01S 5/062 - Dispositions pour commander les paramètres de sortie du laser, p. ex. en agissant sur le milieu actif en faisant varier le potentiel des électrodes

Abrégé

An optical modulator semiconductor device including one or more p-n junctions having a positive doped region and a negative doped region, the p-n junctions being optically connected to at least one waveguide; and an electrode assembly disposed at least partially over the at least one p-n junction, the electrode assembly comprising a first metal layer and a second metal layer, a first electrical signal pathway being formed between the two metal layers at least partially by a dielectric gap, and a second electrical signal pathway being formed by a metal contact from the electrode assembly to one of the positive doped region and the negative doped region. When in use, alternating current (AC) signals are propagated through the first signal pathway and direct current (DC) signals are propagated through the second signal pathway.

Classes IPC  ?

• G02F 1/025 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p. ex. commutation, ouverture de porte ou modulationOptique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur basés sur des éléments à semi-conducteurs ayant des barrières de potentiel, p. ex. une jonction PN ou PIN dans une structure de guide d'ondes optique
• G02F 1/01 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p. ex. commutation, ouverture de porte ou modulationOptique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur

Abrégé

A method, apparatus and system for medium access control is provided. Time slots configured to include mini slots at the beginnings thereof. Devices are assigned time slot, mini slot combinations as transmission opportunities. A device can attempt to use a transmission opportunity when it has a packet to send, by beginning data transmission in its assigned slot and mini slot and potentially continuing the transmission up until the end of the assigned slot. If another device is already transmitting in the assigned slot, the device refrains from using its transmission opportunity. Higher priority devices can be assigned transmission opportunities corresponding to earlier mini slots within a slot. In some embodiments, multiple devices can be assigned the same transmission opportunity and a collision detection mechanism can be employed. In some embodiments, all devices detect if a slot is idle and advance the beginning of the next slot upon such detection.

Classes IPC  ?

• H04W 74/04 - Accès planifié
• H04W 72/0446 - Ressources du domaine temporel, p. ex. créneaux ou trames
• H04W 74/00 - Accès au canal sans fil
• H04W 74/0816 - Accès non planifié, p. ex. ALOHA utilisant une détection de porteuse, p. ex. accès multiple par détection de porteuse [CSMA] avec évitement de collision

Abrégé

Systems and methods are disclosed for triggering a first action based on user interactions with a fold region of a foldable touchscreen device. A foldable touchscreen device includes a flexible touchscreen element having a fold region separating first and second partitions of the flexible touchscreen element. The foldable touchscreen device includes a processor and a memory. The foldable touchscreen device may be caused to: display a first object in the first partition; detect, at a location of the first partition corresponding to the first object, an initialization of a drag gesture; detect a path of the drag gesture passing near or through a first one of one or more shortcut overlays displayed in the fold region; and trigger a first action corresponding to the first one of the one or more shortcut overlays.

Classes IPC  ?

• G06F 3/04883 - Techniques d’interaction fondées sur les interfaces utilisateur graphiques [GUI] utilisant des caractéristiques spécifiques fournies par le périphérique d’entrée, p. ex. des fonctions commandées par la rotation d’une souris à deux capteurs, ou par la nature du périphérique d’entrée, p. ex. des gestes en fonction de la pression exercée enregistrée par une tablette numérique utilisant un écran tactile ou une tablette numérique, p. ex. entrée de commandes par des tracés gestuels pour l’entrée de données par calligraphie, p. ex. sous forme de gestes ou de texte
• G06F 3/0481 - Techniques d’interaction fondées sur les interfaces utilisateur graphiques [GUI] fondées sur des propriétés spécifiques de l’objet d’interaction affiché ou sur un environnement basé sur les métaphores, p. ex. interaction avec des éléments du bureau telles les fenêtres ou les icônes, ou avec l’aide d’un curseur changeant de comportement ou d’aspect
• G06F 3/0484 - Techniques d’interaction fondées sur les interfaces utilisateur graphiques [GUI] pour la commande de fonctions ou d’opérations spécifiques, p. ex. sélection ou transformation d’un objet, d’une image ou d’un élément de texte affiché, détermination d’une valeur de paramètre ou sélection d’une plage de valeurs
• G06F 1/16 - Détails ou dispositions de structure

Abrégé

A phased array antenna includes a substrate including an antenna element formed in an upper surface of the substrate. The antenna element is capable of being driven in order to create a propagation pattern. An upper substrate is positioned in a coplanar arrangement a distance above the substrate. The upper substrate includes a lattice of metallic scatterers formed in a plane of the upper substrate. The upper substrate includes a metamaterial including a metasurface with a plurality of unit cells formed therein with the plurality of unit cells arranged in a repeating pattern.

Classes IPC  ?

• H01Q 15/00 - Dispositifs pour la réflexion, la réfraction, la diffraction ou la polarisation des ondes rayonnées par une antenne, p. ex. dispositifs quasi optiques
• H01Q 3/26 - Dispositifs pour changer ou faire varier l'orientation ou la forme du diagramme de directivité des ondes rayonnées par une antenne ou un système d'antenne faisant varier la phase relative ou l’amplitude relative et l’énergie d’excitation entre plusieurs éléments rayonnants actifsDispositifs pour changer ou faire varier l'orientation ou la forme du diagramme de directivité des ondes rayonnées par une antenne ou un système d'antenne faisant varier la distribution de l’énergie à travers une ouverture rayonnante

Abrégé

According to aspects of the present disclosure, a value of a transmission feature of a random access message transmitted by an apparatus is based on a location identifier of the apparatus. In particular, the value of the transmission feature is selected from a pool of possible values, in which the pool is selected based on the location identifier of the apparatus. This allows for reducing pool size and thus complexity whilst supporting a large number of apparatus. In addition, higher power efficiency and decreased per user probability of error may be achieved.

Classes IPC  ?

• H04W 72/50 - Critères d’affectation ou de planification des ressources sans fil
• H04L 12/413 - Réseaux à ligne bus avec commande décentralisée avec accès aléatoire, p. ex. accès multiple avec détection de porteuse et détection de collision [CSMA-CD]
• H04W 74/08 - Accès non planifié, p. ex. ALOHA

Abrégé

A method for planning paths of a connected autonomous vehicle (CAV) include receiving, by the local controller, from a global center, road topology information of a road network and a current location and a destination of the CAV. Also, receiving, by the local controller, from a roadside unit (RSU), perception information in a vicinity of the CAV. Then, constructing, by the local controller, using the current location, the destination, the perception information, and the road topology information, a scenario including route planning for the CAV on the road network in an area including the RSU. Generating, by the local controller, a plurality of waypoints connecting the destination of the CAV with the location of the CAV and interpolating a reference path from the plurality of waypoints. Then sending, by the local controller, to controllers of the CAV and to the RSU, information of reference paths to be followed by CAV.

Classes IPC  ?

• G08G 1/0968 - Systèmes impliquant la transmission d'indications de navigation au véhicule

Abrégé

The disclosed modified-segment Mach Zehnder modulator (MZM) comprising: i) a differential signal generator configured to generate a first radio frequency (RF) signal having a first polarity and a second RF signal having a second polarity, the first polarity being opposite to the second polarity; ii) a first segment modulator configured to modulate an optical signal in accordance with the first RF signal; iii) a second segment modulator coupled to the first segment modulator and configured to modulate the optical signal in accordance with the second RF signal; and iv) a delay circuit configured to delay the second RF signal with respect to the first RF signal to compensate for a propagation delay of the optical signal.

Classes IPC  ?

• G02F 1/21 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p. ex. commutation, ouverture de porte ou modulationOptique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur par interférence

Abrégé

The present disclosure provides modules, arrays and methods for interferometric transmitters for dual-band and dual-polarization signal modulation where the module has a plurality of oscillators for generating a plurality of carrier signals of a plurality of frequency bands, and a multiport network connected to the plurality of oscillators. The multiport network having a plurality of inputs each for receiving one of the plurality of carrier signals, a plurality of outputs, and a plurality of reflection paths between the plurality of inputs and the plurality of outputs. Each of the plurality of reflection paths has a variable reflection coefficient for modulating the plurality of carrier signals to output a plurality of modulated radio-frequency (RF) signals of the plurality of frequency bands via the plurality of outputs.

Classes IPC  ?

• H03H 7/00 - Réseaux à plusieurs accès comportant comme composants uniquement des éléments électriques passifs
• H01Q 15/24 - Dispositifs polarisantsFiltres polarisants
• H03C 1/08 - Modulation d'amplitude au moyen d'un élément à impédance variable
• H03F 3/68 - Combinaisons d'amplificateurs, p. ex. amplificateurs à plusieurs voies pour stéréophonie
• H03H 7/18 - Réseaux pour commande de déphasage
• H04B 1/00 - Détails des systèmes de transmission, non couverts par l'un des groupes Détails des systèmes de transmission non caractérisés par le milieu utilisé pour la transmission
• H04B 1/04 - Circuits

Abrégé

The present disclosure provides modules, arrays and methods for interferometric receivers for dual-band and dual-polarization signal modulation where the module has a plurality of oscillators for generating a plurality of carrier signals of a plurality of frequency bands, and a multiport circuit connected to the plurality of oscillators. The multiport circuit having a plurality of inputs each for receiving one of the plurality of carrier signals, a plurality of outputs, a plurality of quadrature hybrid couplers, power dividers, and power detectors.

Classes IPC  ?

• H04B 1/00 - Détails des systèmes de transmission, non couverts par l'un des groupes Détails des systèmes de transmission non caractérisés par le milieu utilisé pour la transmission

Abrégé

An optical modulation device including a substrate defining a recess on a top surface thereof, an optical waveguide configured for guiding an optical signal therein, the optical waveguide being disposed in the recess, a first stack assembly disposed on the top surface of the substrate and at least partially above the optical waveguide and a second stack assembly disposed on the top surface of the substrate and at least partially above the optical waveguide is disclosed. The first and second stack assemblies extend parallel to each other on an active portion of the optical waveguide, the first and second stack assemblies being separated by a gap, each of the first and second stack assemblies including a cathode layer, an inorganic semi-conductive material film disposed atop the cathode layer, an insulating coating disposed atop the inorganic semi-conductive material film and an anode layer disposed on the insulating coating.

Classes IPC  ?

• G02F 1/01 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p. ex. commutation, ouverture de porte ou modulationOptique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur
• G02B 6/12 - Guides de lumièreDétails de structure de dispositions comprenant des guides de lumière et d'autres éléments optiques, p. ex. des moyens de couplage du type guide d'ondes optiques du genre à circuit intégré
• G02F 1/015 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p. ex. commutation, ouverture de porte ou modulationOptique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur basés sur des éléments à semi-conducteurs ayant des barrières de potentiel, p. ex. une jonction PN ou PIN

Abrégé

Methods and devices for analyzing and updating intermediate representations containing pointers includes compiling one or more source files into intermediate representations (IRs) having pointers, analyzing the IRs, producing transformed IRs comprising updated pointers, and producing object code from the transformed IRs. The device may include one or more non-transitory computer-readable storage devices having computer-executable instructions, when executed, cause a processing structure to perform the actions described relating to pointers. The analysis and updating of pointers may relate to types of bounds to enhance security of the systems in question by preventing erroneous references to memory space by pointers.

Classes IPC  ?

• G06F 15/173 - Communication entre processeurs utilisant un réseau d'interconnexion, p. ex. matriciel, de réarrangement, pyramidal, en étoile ou ramifié
• G06F 3/06 - Entrée numérique à partir de, ou sortie numérique vers des supports d'enregistrement
• G06F 8/41 - Compilation
• G06F 9/44 - Dispositions pour exécuter des programmes spécifiques
• G06F 15/16 - Associations de plusieurs calculateurs numériques comportant chacun au moins une unité arithmétique, une unité programme et un registre, p. ex. pour le traitement simultané de plusieurs programmes

Abrégé

A method of beamforming by which a signal can be received into an array of channels, each of which is split into a real-part sub-channel and an imaginary part sub-channel. In each sub-channel, optical waves are used to carry the signal via waveguides. Each channel includes a real-part sub-channel where an optical wave is scaled by the real part of a complex number, and an imaginary part sub-channel, where a complementary optical wave is scaled by the complex part of the same complex number. When the complementary optical waves are received at the channel's output, they can be shifted by the phase of the complex number having defined their scaling. By processing a signal with a system operative to perform such method, the application of a different phase to each channel can result in a beamforming of the signal.

Classes IPC  ?

• H04B 7/06 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station d'émission
• H04B 7/0452 - Systèmes MIMO à plusieurs utilisateurs

Abrégé

A method for fabricating a Bismuth-doped silica-based optical composition. The method has the steps of: depositing SiO2 to obtain a silica material, soaking the silica material into an aqueous Bismuth solution, incorporating GeO2 into the silica material, and vitrifying the silica material at a temperature greater than 1500° C. to obtain the Bismuth-doped silica-based optical composition. In some embodiments, the fabricated Bismuth-doped silica-based optical composition has GeO2 of greater than 12 mol % (such as 19 mol %) and is suitable for transmitting therethrough optical signals of one or more of E and S bands.

Classes IPC  ?

• C01B 33/12 - SiliceSes hydrates, p. ex. acide silicique lépidoïque

Abrégé

Methods and modules for accelerating inference computations in transformer models using edge devices includes partitioning inputs for each layer and synchronizing between transformer layers. A method includes receiving a transformer input, partitioning the transformer input into two or more first-stage divisions, processing each first-stage division into a processed first-stage division, and combining the processed first-stage divisions into a first output. A module includes a computing device for partitioning a transformer input into two or more divisions, transmitting each of the divisions, and receiving processed divisions, as well as two or more transformer processing units, each for receiving a division from the computing device, processing the division into a processed division, and sending the processed division to the computing device.

Classes IPC  ?

• G06N 5/04 - Modèles d’inférence ou de raisonnement

Abrégé

A module has an input port, an output port, and a first and a second conductive path arranged in parallel and connecting the input port and the output port, the first path having a first pulse compressor, and the second path having a second pulse compressor and a delay element. The module is suitable for generating a Gaussian doublet pulse, where the first pulse compressor is for providing rise-time compression, the second pulse compressor is for providing fall-time compression, and the delay element is adjustable. The module may further have a pulse-forming network for transforming the Gaussian doublet pulse to a monocycle doublet pulse. Each of the first pulse compressor, the second pulse compressor and the delay network may be non-linear transmission lines.

Classes IPC  ?

• H03K 5/06 - Mise en forme d'impulsions par augmentation de duréeMise en forme d'impulsions par diminution de durée par l'utilisation de lignes à retard ou d'autres éléments à retard analogues

Abrégé

A method of quantum key distribution making use of 2-qubit entanglement, by which one entangled qubit is sent from an operator O to Alice and the other entangled qubit is sent from operator O to Bob, making for key-sharing among three parties (multi-user quantum key distribution, i.e. MU QKD). Alice and Bob each measures a respective sequence of qubits randomly along either one of two states, records the measurements in a respective list, and encodes the bits in an encoded list. The encoded lists are sent to operator O for entanglement to be verified with the CHSH inequality. Bob's verified list is sent to Alice and vice-versa, allowing Alice and Bob to further verify correlation. Non-entangled bits are rejected until Alice and Bob have a similar key, being a reconciled quantum-based key as sought.

Classes IPC  ?

• H04L 9/08 - Répartition de clés

Abrégé

Embodiments of the present disclosure generally provide for a method and apparatus for performing computations using mixed-mode memory elements having contents which are accessible via both optical and electrical interactions. In particular, an array of such elements are accessed through a “crossbar” array structure which includes both an optical crossbar array structure an electrical crossbar array structure. Applications to machine learning, e.g. neural network training, are also provided for.

Classes IPC  ?

• G06N 3/067 - Réalisation physique, c.-à-d. mise en œuvre matérielle de réseaux neuronaux, de neurones ou de parties de neurone utilisant des moyens optiques
• G02B 6/125 - Courbures, branchements ou intersections
• G06N 3/065 - Moyens analogiques
• G02B 6/12 - Guides de lumièreDétails de structure de dispositions comprenant des guides de lumière et d'autres éléments optiques, p. ex. des moyens de couplage du type guide d'ondes optiques du genre à circuit intégré

Abrégé

Methods of distributing a quantum-based cryptographic key to multiple network nodes. A multi-user quantum key distribution from one node to two further nodes can be extended to a binary tree structure where any further node can participate in quantum key distribution with its two child nodes. A key generated in a 3-node subgroup can be stitched with a key from of a parent 3-node subgroup, or a child 3-node group, and key confirmations can be provided through authenticated classical channels. Classical channels can also be used to communicate and relay membership updates, allowing a key operator at a binary tree's root node to update keys accordingly.

Classes IPC  ?

• H04L 9/08 - Répartition de clés
• H04L 9/32 - Dispositions pour les communications secrètes ou protégéesProtocoles réseaux de sécurité comprenant des moyens pour vérifier l'identité ou l'autorisation d'un utilisateur du système

Abrégé

Layers of a neural network can be implemented on an analog computing platform operative to perform MAC operations in series or in parallel in order to cover all elements of an arbitrary size matrix. Embodiments include a convolutional layer, a fully-connected layer, a batch normalization layer, a max pooling layer, an average pooling layer, a ReLU function layer, a sigmoid function layer, as well as concatenations and combinations. Applications include point cloud processing, and in particular of the processing of point clouds obtained as part of a LiDAR application. To implement elements of point cloud data as optical intensities, the data can be linearly translated in order to be fully represented with non-negative values.

Classes IPC  ?

• G06N 3/067 - Réalisation physique, c.-à-d. mise en œuvre matérielle de réseaux neuronaux, de neurones ou de parties de neurone utilisant des moyens optiques

Abrégé

Aspects of the present disclosure provide a waveguide assembly that employs a non-radiative dielectric waveguide at a bend and a dielectric waveguide away from the bend. By implementing a non-radiative dielectric wave guide at the bend and a dielectric waveguide away from the bend the power dissipated during propagation can be minimized without necessitating an increase in the size of the system. A method of manufacture of the waveguide assembly is also provided.

Classes IPC  ?

• H01P 3/00 - Guides d'ondesLignes de transmission du type guide d'ondes
• H01P 3/16 - Guides d'ondes diélectriques, c.-à-d. sans conducteur longitudinal

Abrégé

Methods and devices are described that enable a device to generate a message including a multimodal composition, and to output the message on a device. The multimodal composition is generated by first selecting a first element belonging to a first output modality. The multimodal composition is further generated by selecting at least one second element belonging to a second output modality to associate with the first element, the combination of the first element and the second element being the multimodal composition.

Classes IPC  ?

• H04L 51/10 - Informations multimédias
• H04L 51/08 - Informations annexes, p. ex. pièces jointes

Abrégé

A method to obtain a cache miss ratio curve where a memory blocks of a cache have variable block sizes. By stacking sets of counters, each set being for a different block size, a stack distance for variable block sizes can be obtained and used to determine a miss ratio curve. Such curve can then be used to select a cache size that is appropriate for an application without requiring excessive memory. Methods can be used for batches of request, can apply limits to block sizes, and rounding for intermediary block sizes, they can be used with pruning, and their space complexity can be held constant.

Classes IPC  ?

• G06F 12/0815 - Protocoles de cohérence de mémoire cache

Abrégé

Some embodiments of the present disclosure provide a deep-learning-based framework for designing components of a downlink precoding system. The components of such a system include downlink training pilots and channel estimation based on receipt of the downlink training pilots. Another component involves channel measurement and feedback strategy at the user equipment. The components include a precoding scheme designed at the base station based on the feedback from the user equipment.

Classes IPC  ?

• H04W 72/21 - Canaux de commande ou signalisation pour la gestion des ressources dans le sens ascendant de la liaison sans fil, c.-à-d. en direction du réseau
• G06N 3/04 - Architecture, p. ex. topologie d'interconnexion
• H04B 7/06 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station d'émission
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
• H04W 76/27 - Transitions entre états de commande de ressources radio [RRC]

Abrégé

For a given application, increasing the size of a cache is beneficial up to a certain point and the number of hits does not increase significantly with a greater cache size. This disclosure provides a method to determine a miss ratio curve, for a cache having data blocks with a time-to-live. A hashed value of a data block's key address can be used to generate a 2D HLL counter for storing expiry times of the data blocks. The 2D HLL counter can be converted to a 1D array, from which a stack distance can be calculated. A frequency distribution of stack distances can then be converted into a miss ratio curve, from which an appropriate cache size can be selected.

Classes IPC  ?

• G06F 12/128 - Commande de remplacement utilisant des algorithmes de remplacement adaptée aux systèmes de mémoires cache multidimensionnelles, p. ex. associatives d’ensemble, à plusieurs mémoires cache, multi-ensembles ou multi-niveaux
• G06F 12/0871 - Affectation ou gestion d’espace de mémoire cache
• G06F 12/14 - Protection contre l'utilisation non autorisée de mémoire

Abrégé

A module has two portions, each portion has two units provides an analog-type attenuator-tuning approach having digital control. Each of the units includes an input, an output, three selectable conductive paths, and an input switching element for selectably connecting the unit input to the unit output via one of the three selectable conductive paths. The first and second paths have attenuation elements. The unit output of the first unit of each portion is connected to the unit input of the second unit thereof and the unit output of the via one of the three selectable conductive paths, the unit output of the first unit of each portion is connected to the unit input of the second unit thereof, and the unit output of the second unit of the first portion is connected to the unit input of the first unit of the second portion.

Classes IPC  ?

• H03K 17/56 - Commutation ou ouverture de porte électronique, c.-à-d. par d'autres moyens que la fermeture et l'ouverture de contacts caractérisée par l'utilisation de composants spécifiés par l'utilisation, comme éléments actifs, de dispositifs à semi-conducteurs
• H01L 29/12 - Corps semi-conducteurs caractérisés par les matériaux dont ils sont constitués
• H03F 3/04 - Amplificateurs comportant comme éléments d'amplification uniquement des tubes à décharge ou uniquement des dispositifs à semi-conducteurs comportant uniquement des dispositifs à semi-conducteurs
• H03H 11/24 - Atténuateurs indépendants de la fréquence
• H03H 11/28 - Réseaux d'adaptation d'impédance
• H03K 17/693 - Dispositifs de commutation comportant plusieurs bornes d'entrée et de sortie, p. ex. multiplexeurs, distributeurs

Abrégé

2222 of greater than 12 mol % (such as 19 mol %) and is suitable for transmitting therethrough optical signals of one or more of E and S bands.

Classes IPC  ?

• C03C 3/078 - Compositions pour la fabrication du verre contenant de la silice avec 40 à 90% en poids de silice contenant un oxyde d'un métal divalent, p. ex. un oxyde de zinc
• C03B 37/02 - Fabrication de fibres ou de filaments de verre par étirage ou extrusion
• C03C 4/00 - Compositions pour verres ayant des propriétés particulières
• C03C 21/00 - Traitement du verre, autre que sous forme de fibres ou de filaments, par diffusion d'ions ou de métaux en surface

Abrégé

System, methods and apparatuses for cumulative deep neural network (DNN) inference are provided. There is provided a data-driven cumulative DNN inference method which can aggregate multiple fast DNN inference results to obtain a cumulative DNN inference result and provide an improved cumulative confidence level. There is further provided a method for cumulative DNN inference, which can provide adaptive selection between a fast DNN inference, with low computing demand but low confidence level, and a full DNN inference, with high computing demand but high confidence level.

Classes IPC  ?

• G06N 3/045 - Combinaisons de réseaux

Abrégé

A method, apparatus and system for cooperatively classifying objects in an autonomous vehicle environment are provided. A controller receives data quality indicators from multiple devices. Each data quality indicator reflects quality of an instance of object sensing data held by a device. Each device determines its data quality indicators based on its own sensor data and indications of object bounding regions. The controller makes decisions based at least in part on the data quality indicators, such as decisions on which instances of object sensing data are to be used for an object classification task, which device is to perform the object classification task, any downsampling of sensor data to be performed prior to object classification, and allocations of resources for use in object classification. The decision may be made by solving an optimization problem.

Classes IPC  ?

• G01V 13/00 - Fabrication, étalonnage, nettoyage ou réparation des instruments ou dispositifs couverts par les groupes
• B60W 60/00 - Systèmes d’aide à la conduite spécialement adaptés aux véhicules routiers autonomes
• G01S 7/497 - Moyens de contrôle ou de calibrage

Abrégé

A distributed ledger for vehicle transactions is provided. Also provided is a method of validating vehicle transactions, a method of obtaining a consensus on vehicle transactions, a method of entering data into a distributed ledger and a method of logging vehicle transactions. For each transaction of vehicle transactions, an agreement on a timestamp of the transaction is obtained to form a set of agreed transactions. For the ordered group of the agreed transactions, a consensus on a validity of the group of agreed transactions is obtained. The methods and systems of the present disclosure are specifically designed to address the consensus problem in the context of V2X but may also serve to reach consensus in other contexts. Furthermore, it enables reaching consensus with low latency and high throughput, and dynamic membership changes. It also requires limited (less) memory use to store consensus results. In embodiments, the ordering and commit are separated in achieving consensus (allowing parallel ordering which is quicker, thus lower ordering latency and higher throughput).

Classes IPC  ?

• G06F 21/64 - Protection de l’intégrité des données, p. ex. par sommes de contrôle, certificats ou signatures
• G06F 16/27 - Réplication, distribution ou synchronisation de données entre bases de données ou dans un système de bases de données distribuéesArchitectures de systèmes de bases de données distribuées à cet effet
• G07C 5/08 - Enregistrement ou indication de données de marche autres que le temps de circulation, de fonctionnement, d'arrêt ou d'attente, avec ou sans enregistrement des temps de circulation, de fonctionnement, d'arrêt ou d'attente

Abrégé

An optical fiber and an optical amplifier including the optical fiber are disclosed, the optical fiber includes a core region for guiding a propagation of a multimode optical signal, a cladding region laterally surrounding the core region and at least two doped rings, each of the at least two doped rings having a corresponding rare-earth or transition metal dopant concentration. The core region includes a central core having a first refractive index, at least one core layer laterally surrounding the central core, each of the at least one core layer having corresponding internal and external radii, an internal radius of an innermost core layer corresponding to a radius of the central core and an external radius of the outermost core layer corresponding to a radius of the core region.

Classes IPC  ?

• H01S 3/067 - Lasers à fibre optique
• H01S 3/16 - Matériaux solides

Abrégé

Methods, devices, and processor-readable media for scaling up graphical user interface (GUI) elements on a smart watch touchscreen based on the initial position of a stroke gesture, thereby facilitating selection, by a user, of a target GUI element. The user only needs to perform one stroke action to select the desired target. During the procedure, GUI elements of the main screen are scaled up to make target selection easier, and the GUI elements are automatically reset to their original size when the procedure is complete. To achieve this result, a “stroke with initial position” gesture is used to select a target.

Classes IPC  ?

• G06F 3/04886 - Techniques d’interaction fondées sur les interfaces utilisateur graphiques [GUI] utilisant des caractéristiques spécifiques fournies par le périphérique d’entrée, p. ex. des fonctions commandées par la rotation d’une souris à deux capteurs, ou par la nature du périphérique d’entrée, p. ex. des gestes en fonction de la pression exercée enregistrée par une tablette numérique utilisant un écran tactile ou une tablette numérique, p. ex. entrée de commandes par des tracés gestuels par partition en zones à commande indépendante de la surface d’affichage de l’écran tactile ou de la tablette numérique, p. ex. claviers virtuels ou menus
• G04G 21/08 - Commutateurs à effleurement spécialement adaptés pour des garde-temps
• G06F 3/04817 - Techniques d’interaction fondées sur les interfaces utilisateur graphiques [GUI] fondées sur des propriétés spécifiques de l’objet d’interaction affiché ou sur un environnement basé sur les métaphores, p. ex. interaction avec des éléments du bureau telles les fenêtres ou les icônes, ou avec l’aide d’un curseur changeant de comportement ou d’aspect utilisant des icônes
• G06F 3/04842 - Sélection des objets affichés ou des éléments de texte affichés
• G06F 3/04845 - Techniques d’interaction fondées sur les interfaces utilisateur graphiques [GUI] pour la commande de fonctions ou d’opérations spécifiques, p. ex. sélection ou transformation d’un objet, d’une image ou d’un élément de texte affiché, détermination d’une valeur de paramètre ou sélection d’une plage de valeurs pour la transformation d’images, p. ex. glissement, rotation, agrandissement ou changement de couleur

Abrégé

A photonic device configured to perform matrix vector multiplication operations at high frequencies is provided. The vector being multiplied by the matrix is defined by vector components at specific wavelengths. The device includes a first waveguide and a second waveguide. A series of tunable microring resonators (MRRs) are coupled to the first waveguide and to a respective series of passive delay rings (PDRs), which are coupled to the second waveguide. Each MRR/PDR pair defines a tunable matrix component (tunable weight) for a respective wavelength component of the vector. A series of controllable delay elements (CDEs) such as all-pass filters are coupled to the first waveguide, upstream from the tunable MRRs. Any tuning dependent group delay caused by the MRR/PDR pairs can be compensated by controlling the CDEs such that each wavelength components has substantially a same delay as the other wavelength components.

Classes IPC  ?

• G06E 3/00 - Dispositifs non prévus dans le groupe , p. ex. pour traiter des données analogiques hybrides
• G02B 5/20 - Filtres
• G02B 6/12 - Guides de lumièreDétails de structure de dispositions comprenant des guides de lumière et d'autres éléments optiques, p. ex. des moyens de couplage du type guide d'ondes optiques du genre à circuit intégré

Abrégé

Methods, systems, and computer-readable media for using artificial intelligence to assist a linear programming (LP) solver are disclosed. A LP assistance software system leverages the categorization of variables to improve LP solver efficiency at the pricing step and/or to generate a custom initial basis for the first iteration of the simplex method. The LP assistance software system may thereby improve the standard simplex algorithm, which involves selecting individual variables in its pricing step.

Classes IPC  ?

• G06F 17/11 - Opérations mathématiques complexes pour la résolution d'équations
• G06F 17/16 - Calcul de matrice ou de vecteur
• G06N 5/02 - Représentation de la connaissanceReprésentation symbolique

Abrégé

A device includes one or more controllers and multiple spatially distributed receivers. Each receiver is controllable by the one or more controllers between an activated state in which the receiver is operable to detect an incoming signal, and a deactivated state in which the receiver is not operable to detect the incoming signal. At least a first receiver and a second receiver of the receivers, each in the activated state, are configured to demodulate the incoming signal by: demodulating with the first receiver an in-phase component of the incoming signal; and demodulating with the second receiver a quadrature component of the incoming signal.

Classes IPC  ?

• H04L 27/38 - Circuits de démodulationCircuits récepteurs
• H04B 1/18 - Circuits d'entrée, p. ex. pour le couplage à une antenne ou à une ligne de transmission
• H04B 7/08 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station de réception
• H04W 88/02 - Dispositifs terminaux

Abrégé

Methods, systems, and computer-readable media for using artificial intelligence to assist a linear programming (LP) solver are disclosed. A LP assistance software system leverages the categorization of variables to improve LP solver efficiency at the pricing step and/or to generate a custom initial basis for the first iteration of the simplex method. The LP assistance software system may thereby improve the standard simplex algorithm, which involves selecting individual variables in its pricing step.

Classes IPC  ?

• G06F 17/12 - Opérations mathématiques complexes pour la résolution d'équations d'équations simultanées
• G06N 20/00 - Apprentissage automatique
• G06Q 10/04 - Prévision ou optimisation spécialement adaptées à des fins administratives ou de gestion, p. ex. programmation linéaire ou "problème d’optimisation des stocks"

Abrégé

A module for modulation and demodulation using two substantially identical self-oscillating mixers (SOMs) injection-locked at a coupling frequency, providing a simple compact, low power, highly efficient receiver, transmitter or transceiver. The module suitable for quadrature amplitude-modulation where the coupling frequency is the second harmonic frequency of the SOMs and the SOMs oscillate 180 degrees out of phase relative to one another. Use of carrier frequencies at a fundamental harmonic frequency or odd multiples thereof provide high isolation between the SOMs at the carrier frequency. A method for modulation and demodulation includes injection-locking the two SOMs at a coupling frequency.

Classes IPC  ?

• H04B 1/16 - Circuits
• H03L 7/00 - Commande automatique de fréquence ou de phaseSynchronisation
• H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
• H04W 88/00 - Dispositifs spécialement adaptés aux réseaux de télécommunications sans fil, p. ex. terminaux, stations de base ou points d'accès

Abrégé

A waveguide coupler with integrated polarization is a module including one or more H-plane ports, two or more E-plane ports and a coupling element for transforming between H-plane port and E-plane ports. The coupling element including two or more coupling sections having a cavity and symmetrical about a symmetry plane. One or more of the symmetrical coupling sections having two or more grooves along a common side and at least one symmetrical coupling section having obstructions that may partially overlap with the two or more grooves. The grooves and obstructions are symmetrical about the symmetry plane. In an embodiment, the module is a four-port waveguide coupler having two H-plane port and two E-plane ports. In an embodiment, the ports are offset relative to the symmetry plan by forty-five degrees forming a cruciform waveguide coupler.

Classes IPC  ?

• H01P 5/12 - Dispositifs de couplage présentant au moins trois accès
• H01P 1/165 - Dispositifs auxiliaires pour faire tourner le plan de polarisation

Abrégé

The present disclosure provides modules, systems and methods for a cooperative radar-communication (RadCom) wherein transmitters, receivers, and/or transceivers alternate between radar and radio communications in time slots using methods such as time division multiplexing (TDMA), wherein receivers and/or transceivers may be interferometric and the interferometric receivers and/or transceivers may also use balanced detection in radar and communication modes for providing modules, systems and methods requiring a lower dynamic range resulting in increased performance and lower power consumption requirements. An embodiment of the present disclosure relates to modules, systems and methods for radar using transmitters, receivers, transceivers, and/or radio using interferometric receivers and/or transceivers using balanced detection.

Classes IPC  ?

• G01S 13/86 - Combinaisons de systèmes radar avec des systèmes autres que radar, p. ex. sonar, chercheur de direction
• G01S 7/02 - Détails des systèmes correspondant aux groupes , , de systèmes selon le groupe
• H04B 7/26 - Systèmes de transmission radio, c.-à-d. utilisant un champ de rayonnement pour communication entre plusieurs postes dont au moins un est mobile
• G01S 13/536 - Discrimination entre objets fixes et mobiles ou entre objets se déplaçant à différentes vitesses utilisant la transmission d'ondes continues non modulées, ou modulées en amplitude, en fréquence ou en phase

Abrégé

In cloud computing, for various reasons such as load-balancing, hotspot elimination, server consolidation, energy and cost savings, and system maintenance, there is a need to migrate a virtual sub-network of virtual entities from a source network of servers to a destination set of servers. Existing migration methods are limited to the migration of VM memory and controller states, where network entities are migrated individually. Embodiments of this disclosure include systems and methods for the stateful live migration of a multi-layer network, while maintaining live state convergence and consistency, and preventing network connection losses, packet disordering and packet drops.

Classes IPC  ?

• H04L 45/00 - Routage ou recherche de routes de paquets dans les réseaux de commutation de données
• H04L 45/02 - Mise à jour ou découverte de topologie
• H04L 41/084 - Configuration en utilisant des informations préexistantes, p. ex. en utilisant des gabarits ou en copiant à partir d’autres éléments

Abrégé

According to a first aspect of the disclosure, methods are discussed in which a station (STA) sends a message to an access point, for example an associated access point, about a change in multi-AP coordination parameters. A STA, which may be a mobile STA, can be in a better position than the APs themselves, for detecting changes in conditions which can affect the effectiveness, or even the desirability of the multi-AP coordination. Accordingly the STA can send a message reporting detected conditions related to multi-AP coordination. In some embodiments, such a message can request for initializing multi-AP coordination, such a message can be in response to a triggering event detected by the STA. In response to such a triggering event, the STA can analyze the STA's service needs, and send the message about a change in multi-AP coordination parameters. A second aspect of the disclosure provides an AP-to-AP negotiation process for multi-AP coordination. This can be useful either by itself or combined with the first aspect or can be used as an improvement to other multi-AP coordination methods and systems. In some embodiments, such a process includes each AP maintaining an ongoing database of adjacent APs based on prior multi-AP coordination.

Classes IPC  ?

• H04W 76/15 - Établissement de connexions à liens multiples sans fil

Abrégé

According to a first aspect of the disclosure, methods are discussed in which a station (STA) sends a message to an access point, for example an associated access point, about a change in multi-AP coordination parameters. A STA, which may be a mobile STA, can be in a better position than the APs themselves, for detecting changes in conditions which can affect the effectiveness, or even the desirability of the multi-AP coordination. A second aspect of the disclosure provides an AP-to-AP negotiation process for multi-AP coordination. This can be useful either by itself or combined with the first aspect or can be used as an improvement to other multi-AP coordination methods and systems. In some embodiments, such a process includes each AP maintaining an ongoing database of adjacent APs based on prior multi-AP coordination.

Classes IPC  ?

• H04W 24/02 - Dispositions pour optimiser l'état de fonctionnement
• H04W 48/20 - Sélection d'un point d'accès
• H04W 80/00 - Protocoles de réseaux sans fil ou adaptations de protocoles à un fonctionnement sans fil

Abrégé

A photonic device configured to perform matrix vector multiplication operations at high frequencies is provided. The vector being multiplied by the matrix is defined by vector components at specific wavelengths. The device includes a first waveguide and a second waveguide. A series of tunable microring resonators (MRRs) are coupled to the first waveguide and to a respective series of passive delay rings (PDRs), which are coupled to the second waveguide. Each MRR/PDR pair defines a tunable matrix component (tunable weight) for a respective wavelength component of the vector. A series of controllable delay elements (CDEs) such as all-pass filters are coupled to the first waveguide, upstream from the tunable MRRs. Any tuning dependent group delay caused by the MRR/PDR pairs can be compensated by controlling the CDEs such that each wavelength components has substantially a same delay as the other wavelength components.

Classes IPC  ?

• G02B 6/293 - Moyens de couplage optique ayant des bus de données, c.-à-d. plusieurs guides d'ondes interconnectés et assurant un système bidirectionnel par nature en mélangeant et divisant les signaux avec des moyens de sélection de la longueur d'onde
• H04J 14/02 - Systèmes multiplex à division de longueur d'onde
• G06E 3/00 - Dispositifs non prévus dans le groupe , p. ex. pour traiter des données analogiques hybrides

Abrégé

Servers, methods and systems are disclosed for one-round Bayesian federated learning. Embodiments of the present disclosure may assume that each client produces samples from p(y|x, Di) (i.e. the local predictive posteriors), and combines this information to estimate p(y|x, D) (i.e. the global predictive posterior). In some embodiments, an ensemble method may be used that leverages principled Bayesian techniques to incorporate each client's uncertainty estimates.

Classes IPC  ?

• G06N 20/00 - Apprentissage automatique
• G06N 7/00 - Agencements informatiques fondés sur des modèles mathématiques spécifiques

Abrégé

A tightly-coupled antenna array has a plurality of tightly-coupled antenna elements configured to transmit or receive electromagnetic waves. The plurality of antenna elements include a plurality of active antenna elements for being excited by a plurality of excitation sources and a plurality of passive antenna elements. Each active antenna element is configured to be excited by a respective one of the plurality of excitation sources. Each passive antenna element is terminated by a finite passive impedance. Each antenna element of the array is adjacent a plurality of other antenna elements of the array and is spaced from each of the plurality of other antenna elements by a spacing of no more than half a wavelength of the electromagnetic waves.

Classes IPC  ?

• H01Q 21/00 - Systèmes ou réseaux d'antennes
• H01Q 21/24 - Combinaisons d'unités d'antennes polarisées dans des directions différentes pour émettre ou recevoir des ondes polarisées circulairement ou elliptiquement ou des ondes polarisées linéairement dans n'importe quelle direction
• H01Q 23/00 - Antennes comportant des circuits ou des éléments de circuit actifs qui leur sont intégrés ou liés
• G01S 7/03 - Détails de sous-ensembles HF spécialement adaptés à ceux-ci, p. ex. communs à l'émetteur et au récepteur
• H04M 1/72 - Téléphones mobilesTéléphones sans fil, c.-à-d. dispositifs pour établir des connexions sans fil aux stations de base sans sélection de l'itinéraire

Abrégé

A touch display device (TDD) configured to function with a pointing device (PD), and a method of operating the TDD. The TDD has a processor that automatically determines if the PD is in contact with a touch display (TD) of the TDD or with a surface distinct from the TD. When the PD is in contact with the TD, a toggling signal from the PD may be received at the processor to toggle from a first input mode where a tip of the PD overlaps a visual element displayed on the TD, to a second input mode with the tip of the PD is spaced apart from the displayed visual element. When the PD is in contact with the distinct surface, the processor automatically selects a third input mode where a position of the PD on the distinct surface is reproduced as a position the sign on the TD.

Classes IPC  ?

• G06F 3/038 - Dispositions de commande et d'interface à cet effet, p. ex. circuits d'attaque ou circuits de contrôle incorporés dans le dispositif
• G06F 3/044 - Numériseurs, p. ex. pour des écrans ou des pavés tactiles, caractérisés par les moyens de transduction par des moyens capacitifs
• G06F 3/0354 - Dispositifs de pointage déplacés ou positionnés par l'utilisateurLeurs accessoires avec détection des mouvements relatifs en deux dimensions [2D] entre le dispositif de pointage ou une partie agissante dudit dispositif, et un plan ou une surface, p. ex. souris 2D, boules traçantes, crayons ou palets

Abrégé

A circuit has a source, a load, and a tuning component connected to the source and load. The source has a source impedance and for generating an input signal at a first and a second frequency. The load has a load impedance and a first input reflection coefficient and for generating an output signal at the first and second frequencies. The tuning component has a first filter having a first output reflection coefficient and for modifying a magnitude of the first output reflection coefficient based on the first input reflection coefficient, and a first phase shifter connected to the first filter and for introducing a first phase shift to the first output reflection coefficient. The tuning component simultaneously matches the source impedance to the load impedance at each of the first and second frequencies, and is tunable for adjusting the first output reflection coefficient and/or the first phase shift.

Classes IPC  ?

• H03H 7/38 - Réseaux d'adaptation d'impédance
• H03H 7/01 - Réseaux à deux accès sélecteurs de fréquence
• H03H 7/20 - Déphaseurs à deux accès produisant un déphasage ajustable

Abrégé

Methods and systems are described for training a master policy coordinating multiple agents to interact with an environment. In each training iteration, a subset of agents whose respective macro-action has terminated at a current timestep is identified. A policy distribution is defined based on completion of the respective macro-action by each agent in the subset. A new macro-action is generated for each agent in the subset, using the policy distribution. A transition sample is collected from at least each agent in the subset. The master policy is updated using a policy gradient computed based on the collected transition sample and the policy distribution. After a convergence condition is satisfied, the trained master policy is stored. Examples of the disclosed methods and systems enable policy gradient-based training of a multi-agent reinforcement learning system, where the agents may perform macro-actions asynchronously.

Classes IPC  ?

• G06N 20/00 - Apprentissage automatique

Abrégé

Matrix multiplication is performed using a photonic computing block. Matrices are preprocessed to derive representative positive, real-valued matrices. The representative matrices are multiplied using a photonic computing block in which elements of a first matrix are encoded as a signal intensity and elements of a second matrix are encoded by tuning a spectral filter to apply a corresponding weight coefficient. Pairwise multiplications of matrix elements are performed by processing different wavelength components of an overall optical signal. A balanced photodiode receives the different wavelength components following manipulation in order to complete the multiplication. A matrix multiplication can be partitioned to fit a photonic computing block. The partitions are processed in parallel by multiple photonic computing blocks then reassembled into a final matrix. The multiplication operation can be part of a matrix inversion operation. Applications include (massive) multiple input multiple output (MIMO) precoding and detection, beamforming and other wireless communication applications.

Classes IPC  ?

• H04B 7/04 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées
• G06N 10/40 - Réalisations ou architectures physiques de processeurs ou de composants quantiques pour la manipulation de qubits, p. ex. couplage ou commande de qubit
• H04B 7/0413 - Systèmes MIMO

Abrégé

A method for operating a reservoir computer includes receiving an input symbol and applying a time mask to the input symbol to produce a plurality of time multiplexed nodes. The method includes modulating, using the plurality of time nodes, a plurality of frequency channels to produce a plurality of frequency nodes and multiplexing the plurality of frequency nodes to produce a plurality of multiplexed frequency nodes. The method also includes coupling the multiplexed frequency nodes into a reservoir that includes a non-linear element and receiving a delayed plurality of time-frequency multiplexed nodes from the reservoir. The method also includes demultiplexing the delayed plurality of multiplexed frequency nodes to produce a plurality of delayed time nodes and modulating, using the plurality of delayed time nodes and the input time nodes, the plurality of frequency channels. The method further includes outputting a response based on the plurality of delayed time nodes.

Classes IPC  ?

• G06N 3/067 - Réalisation physique, c.-à-d. mise en œuvre matérielle de réseaux neuronaux, de neurones ou de parties de neurone utilisant des moyens optiques

Abrégé

Methods, systems, and computer-readable media for using inverse reinforcement learning to learn constraints from expert demonstrations are disclosed. The constraints may be learned as a constraint function in two alternating procedures, namely policy optimization and constraint function optimization. Neural network constraint functions may be learned which can represent arbitrary constraints. Embodiments are disclosed that work in all types of environments, with either discrete or continuous state and action spaces. Embodiments are disclosed that may scale to a large set of demonstrations. Embodiments are disclosed that work with any forward CRL technique when finding the optimal policy.

Classes IPC  ?

• G06N 3/08 - Méthodes d'apprentissage
• B60W 60/00 - Systèmes d’aide à la conduite spécialement adaptés aux véhicules routiers autonomes
• B60W 50/06 - Détails des systèmes d'aide à la conduite des véhicules routiers qui ne sont pas liés à la commande d'un sous-ensemble particulier pour améliorer la réponse dynamique du système d'aide à la conduite, p. ex. pour améliorer la vitesse de régulation, ou éviter le dépassement de la consigne ou l'instabilité

Abrégé

A full-duplex transceiver includes a dual-polarized antenna, a dual-mode waveguide circulator, and at least a receiver port and a transmitter port. The dual-polarized antenna is configured to transmit first electromagnetic waves polarized by the dual-polarized antenna according to a first polarization, and receive second electromagnetic waves polarized according to a second polarization orthogonal to the first polarization. In response to electromagnetic waves being received at the transmitter port, the waveguide circulator guides a TE10 mode of the electromagnetic waves to the antenna for coupling the TE10 mode of the electromagnetic waves to the antenna and polarizing the electromagnetic waves according to the first polarization to form the first electromagnetic waves. In response to the second electromagnetic waves being received at the antenna, the waveguide circulator couples a TE20 mode of the second electromagnetic waves and guides the TE20 mode of the second electromagnetic waves to the receiver port.

Classes IPC  ?

• G01S 7/03 - Détails de sous-ensembles HF spécialement adaptés à ceux-ci, p. ex. communs à l'émetteur et au récepteur
• H04B 1/38 - Émetteurs-récepteurs, c.-à-d. dispositifs dans lesquels l'émetteur et le récepteur forment un ensemble structural et dans lesquels au moins une partie est utilisée pour des fonctions d'émission et de réception

Abrégé

A waveguide is coupled at both ends to a microring (MRR) modulator in order to form a Mach-Zehnder interferometer out of the resulting unit. The coupled waveguide can be modulated independently from the MRR modulator itself with either an in-resonance photoconductive heater or a geometrically suitable PN junction. During modulation with an applied voltage to the coupler, an independent modulation can be applied to the MRR in order to compensate for wavelength shifting. Ideal lengths for the coupler are identified, as well as a spiral configuration to reduce the coupler's footprint on a photonic integrated circuit. The resulting device has reduced cross-talk between channels of a cascaded MRR system. A second coupler can be coupled to each MRR symmetrically so as to reduce insertion losses, allowing for an increased weight range at the drop and through ports.

Classes IPC  ?

• G02F 1/225 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p. ex. commutation, ouverture de porte ou modulationOptique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur par interférence dans une structure de guide d'ondes optique
• G02F 1/01 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p. ex. commutation, ouverture de porte ou modulationOptique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur

Abrégé

A module has a transmitter (Tx) antenna and a receiver (Rx) antenna. At least one of the Tx and Rx antennas has a leaky-wave antenna (LWA) array for transmitting or receiving one or more signal beams with a range resolution and an angle resolution. The LWA array has a plurality of LWAs configured as a filter bank. By using the filter bank based LWAs, the LWA array may coherently stitch or combine the individual spectrums of the LWAs to have a wide frequency-space coverage for providing improved range and/or angle resolutions.

Classes IPC  ?

• H01Q 21/00 - Systèmes ou réseaux d'antennes
• G01S 7/03 - Détails de sous-ensembles HF spécialement adaptés à ceux-ci, p. ex. communs à l'émetteur et au récepteur
• G01S 13/02 - Systèmes utilisant la réflexion d'ondes radio, p. ex. systèmes du type radar primaireSystèmes analogues
• G01S 13/42 - Mesure simultanée de la distance et d'autres coordonnées

Abrégé

This invention is related to a new treatment process employed during preparation of the ZnO ETL in a QDLED. The treatment involves exposing the ZnO layer to fluorine (F). In embodiments of this invention, the exposure of the ZnO layer to the F is performed using a fluorine plasma environment (e.g., using CF4, CHF3, C4F8 or SF6). Alternatively, the F exposure may be done by exposing the ZnO ETL to a suitable fluorine-containing substance such as fluorine gas or fluorinated solvents. The F plasma treatment of the ZnO improves both QDLED device EQE and EL stability.

Classes IPC  ?

• H01L 51/50 - Dispositifs à l'état solide qui utilisent des matériaux organiques comme partie active, ou qui utilisent comme partie active une combinaison de matériaux organiques et d'autres matériaux; Procédés ou appareils spécialement adaptés à la fabrication ou au traitement de tels dispositifs ou de leurs parties constitutives spécialement adaptés pour l'émission de lumière, p.ex. diodes émettrices de lumière organiques (OLED) ou dispositifs émetteurs de lumière à base de polymères (PLED)
• H01L 51/56 - Procédés ou appareils spécialement adaptés à la fabrication ou au traitement de tels dispositifs ou de leurs parties constitutives
• H01L 51/00 - Dispositifs à l'état solide qui utilisent des matériaux organiques comme partie active, ou qui utilisent comme partie active une combinaison de matériaux organiques et d'autres matériaux; Procédés ou appareils spécialement adaptés à la fabrication ou au traitement de tels dispositifs ou de leurs parties constitutives

Abrégé

There is provided a method and apparatus associated with cluster-based parallel split learning. The method includes a network controller distributing a client-side model to a plurality of client devices in a cluster. The method also includes a server receiving a plurality of transmissions from each of the client devices, each transmission including smashed data and information about data used to generate the smashed data, and the server generating a gradient associated with the smashed data based at least in part on the transmissions. The method includes the server transmitting the gradient associated with the smashed data to the client devices, and the network controller receiving updated client-side models from each of the client devices. The method also includes the network controller generating an aggregated client-side model based on the received updated client-side models and transmitting the aggregated client-side model to a second cluster of client devices.

Classes IPC  ?

• H04L 41/142 - Analyse ou conception de réseau en utilisant des méthodes statistiques ou mathématiques
• H04L 41/16 - Dispositions pour la maintenance, l’administration ou la gestion des réseaux de commutation de données, p. ex. des réseaux de commutation de paquets en utilisant l'apprentissage automatique ou l'intelligence artificielle
• H04L 47/762 - Contrôle d'admissionAllocation des ressources en utilisant l'allocation dynamique des ressources, p. ex. renégociation en cours d'appel sur requête de l'utilisateur ou sur requête du réseau en réponse à des changements dans les conditions du réseau déclenchée par le réseau

Abrégé

434866). Alternatively, the F exposure may be done by exposing the ZnO ETL to a suitable fluorine-containing substance such as fluorine gas or fluorinated solvents. The F plasma treatment of the ZnO improves both QDLED device EQE and EL stability.

Classes IPC  ?

• H01L 33/14 - DISPOSITIFS À SEMI-CONDUCTEURS NON COUVERTS PAR LA CLASSE - Détails caractérisés par les corps semi-conducteurs ayant une structure contrôlant le transport des charges, p.ex. couche semi-conductrice fortement dopée ou structure bloquant le courant
• H01L 33/06 - DISPOSITIFS À SEMI-CONDUCTEURS NON COUVERTS PAR LA CLASSE - Détails caractérisés par les corps semi-conducteurs ayant une structure à effet quantique ou un superréseau, p.ex. jonction tunnel au sein de la région électroluminescente, p.ex. structure de confinement quantique ou barrière tunnel

Abrégé

A photonic device which is configured to implement a recurrent neural network via reservoir computing is provided. The device includes a feed portion which mixes an input signal with previously generated and controllably attenuated portions of an output signal. The device further includes one or more propagating stages coupled to the feed portion. Each propagating stage propagates signals through a loop in both clockwise and counterclockwise directions, for example to be affected by nonlinear elements. The arrangement of the photonic device causes a nonlinear activation function to be realized by the propagating stages. The nonlinear activation function may be adjustable by adjusting various controllable elements in the device.

Classes IPC  ?

• G06N 3/067 - Réalisation physique, c.-à-d. mise en œuvre matérielle de réseaux neuronaux, de neurones ou de parties de neurone utilisant des moyens optiques
• G02B 6/12 - Guides de lumièreDétails de structure de dispositions comprenant des guides de lumière et d'autres éléments optiques, p. ex. des moyens de couplage du type guide d'ondes optiques du genre à circuit intégré
• G02F 1/35 - Optique non linéaire
• G06E 1/00 - Dispositions pour traiter exclusivement des données numériques

Abrégé

The present disclosure provides for methods and systems for improved channel information gathering mechanism. An aspect of the disclosure provides a method. The method includes sending, to one or more stations (STAs), a request for channel information. The channel information being related to one or more channels between an access point (AP) and the one or more STAs. The method further includes receiving, from the one or more (STA), one or more physical layer (PHY) protocol data units (PPDUs). The PPDUs includes channel feature information (CFI) associated with the one or more channels. In some embodiments, the request includes a beamforming report poll (BFRP) trigger frame having a user information field. The user information subfield indicating one or more thresholds associated with one or more parameters of the channel feature information.

Classes IPC  ?

• H04W 24/10 - Planification des comptes-rendus de mesures
• H04B 7/06 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station d'émission
• H04L 25/02 - Systèmes à bande de base Détails
• H04W 84/12 - Réseaux locaux sans fil [WLAN Wireless Local Area Network]

Abrégé

The present disclosure provides for methods and systems for improved channel information gathering mechanism. An aspect of the disclosure provides a method. The method includes sending, to one or more stations (STAs), a request for channel information. The channel information being related to one or more channels between an access point (AP) and the one or more STAs. The method further includes receiving, from the one or more (STA), one or more physical layer (PHY) protocol data units (PPDUs). The PPDUs includes channel feature information (CFI) associated with the one or more channels. In some embodiments, the request includes a beamforming report poll (BFRP) trigger frame having a user information field. The user information subfield indicating one or more thresholds associated with one or more parameters of the channel feature information.

Classes IPC  ?

• H04B 17/30 - SurveillanceTests de canaux de propagation