In one example of the present disclosure, a radome assembly for use with an antenna assembly is described. The radome assembly may comprise a radome body portion having a first surface and a second surface, wherein the second surface is opposite the first surface, and wherein the radome body portion defines a portion of a housing for an antenna assembly. The radome assembly may further comprise a radome spacer portion extending from the second surface of the radome body portion, the radome spacer portion defining a plurality of cells that are formed from a plurality of cell walls, wherein at least two cell walls of the plurality of cell walls defining each cell of the plurality of cells are spaced apart from each other.
F16B 5/06 - Jonction de feuilles ou de plaques soit entre elles soit à des bandes ou barres parallèles à elles par brides ou clips
H01Q 1/38 - Forme structurale pour éléments rayonnants, p. ex. cône, spirale, parapluie formés par une couche conductrice sur un support isolant
H01Q 1/40 - Éléments rayonnants recouverts avec, ou enrobés d'une matière protectrice
H01Q 1/42 - Enveloppes non intimement mécaniquement associées avec les éléments rayonnants, p. ex. radome
H01Q 1/52 - Moyens pour réduire le couplage entre les antennesMoyens pour réduire le couplage entre une antenne et une autre structure
H01Q 3/08 - 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 utilisant un mouvement mécanique de l'ensemble d'antenne ou du système d'antenne pour faire varier deux coordonnées de l'orientation
A method of calibrating a phased array antenna is provided. The method includes performing a relative calibration of a subset of antenna elements of an antenna lattice relative to one another based on in-line calibration measurements between a calibration line and the subset of antenna elements to yield a calibrated subset of antenna elements; capturing a first OTA calibration measurement pair, wherein the first OTA calibration measurement pair comprises a first OTA calibration measurement associated with a particular geometric relationship, determining a complex coupling ratio associated with the particular geometric relationship based on the first OTA calibration measurement and the second OTA calibration measurement, capturing a second OTA calibration measurement pair associated with the particular geometric relationship, and determining, at least one of a phase correction factor or a gain correction factor between a complex gains of a pair of uncalibrated antenna elements.
A method includes performing a first relative calibration of a first plurality of periodically spaced antenna elements of an antenna lattice based on OTA calibration measurements to obtain a calibrated first plurality of periodically spaced antenna elements, performing a second relative calibration of a second plurality of periodically spaced antenna elements of the antenna lattice based on OTA calibration measurements, performing a third relative calibration of complex gains of a first subset of the first plurality of periodically spaced antenna elements and a second subset of antenna elements of the second plurality of periodically spaced antenna elements based on in-line calibration measurements of coupling between a calibration line and respective antenna elements of the first subset of antenna elements and the second subset of antenna elements and calibrating complex gains of the first plurality of periodically spaced antenna elements and the second plurality of periodically spaced antenna elements.
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
H01Q 1/28 - Adaptation pour l'utilisation dans ou sur les avions, les missiles, les satellites ou les ballons
39 - Services de transport, emballage et entreposage; organisation de voyages
40 - Traitement de matériaux; recyclage, purification de l'air et traitement de l'eau
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Launch, on-orbit, and reentry services, namely, transporting the payloads of others to, through, and from space; Spaceflight travel services for humans and objects. Provision of in-space manufacturing services; custom manufacturing and processing of materials in a micro-gravity environment with commercial applications; custom manufacturing and processing of pharmaceuticals in a micro-gravity environment with commercial applications; custom manufacturing and processing of hosted payloads of others in a micro-gravity environment with commercial applications. Research and development of technology in the fields of in-space manufacturing, spaceflight, and space exploration; engineering services in the fields of in-space manufacturing, spaceflight, and space exploration; scientific research in the fields of in-space manufacturing, pharmaceuticals and biology; scientific and technological services, namely, scientific research and analysis of data in the fields of in-space manufacturing, pharmaceuticals and biology; aerial surveying services.
39 - Services de transport, emballage et entreposage; organisation de voyages
40 - Traitement de matériaux; recyclage, purification de l'air et traitement de l'eau
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
(1) Launch, on-orbit, and reentry services, namely, transporting the payloads of others to, through, and from space; Spaceflight travel services for humans and objects.
(2) Provision of in-space manufacturing services; custom manufacturing and processing of materials in a micro-gravity environment with commercial applications; custom manufacturing and processing of pharmaceuticals in a micro-gravity environment with commercial applications; custom manufacturing and processing of hosted payloads of others in a micro-gravity environment with commercial applications.
(3) Research and development of technology in the fields of in-space manufacturing, spaceflight, and space exploration; engineering services in the fields of in-space manufacturing, spaceflight, and space exploration; scientific research in the fields of in-space manufacturing, pharmaceuticals and biology; scientific and technological services, namely, scientific research and analysis of data in the fields of in-space manufacturing, pharmaceuticals and biology; aerial surveying services.
6.
SYNCHRONIZATION OF FREQUENCY DIVIDED REFERENCE CLOCKS
Systems and techniques for synchronizing serializer and deserializer digital reference clocks are described. An example method includes activating a phase locked loop (PLL) to generate an ADC/DAC reference signal, obtaining a DAC Enable (DAC_EN) signal, generating, based on the DAC_EN signal, a SET signal aligned with a phase of the ADC/DAC reference signal, generating, based on the ADC/DAC reference signal, a serializer digital reference clock for a serializer coupled to the DAC, and generating, based on the ADC/DAC reference signal and the SET signal, a deserializer digital reference clock for a deserializer coupled to the ADC. The serializer digital reference clock and the deserializer digital reference clock are each respectively generated by frequency division of the ADC/DAC reference signal. The serializer digital reference clock and the deserializer digital reference clock are synchronized to a known phase based on the SET signal.
H03L 7/191 - Synthèse de fréquence indirecte, c.-à-d. production d'une fréquence désirée parmi un certain nombre de fréquences prédéterminées en utilisant une boucle verrouillée en fréquence ou en phase en utilisant un diviseur de fréquence ou un compteur dans la boucle une différence de temps étant utilisée pour verrouiller la boucle, le compteur entre des nombres fixes ou le diviseur de fréquence divisant par un nombre fixe utilisant au moins deux signaux différents à partir du diviseur de fréquence ou du compteur pour déterminer la différence de temps
40 - Traitement de matériaux; recyclage, purification de l'air et traitement de l'eau
39 - Services de transport, emballage et entreposage; organisation de voyages
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Provision of in-space manufacturing services; custom manufacturing and processing of materials in a micro-gravity environment with commercial applications; custom manufacturing and processing of pharmaceuticals in a micro-gravity environment with commercial applications; custom manufacturing and processing of hosted payloads of others in a micro-gravity environment with commercial applications Launch, on-orbit, and reentry services, namely, transporting the payloads of others to, through, and from space; Spaceflight travel services for humans and objects Research and development of technology in the fields of in-space manufacturing, spaceflight, and space exploration; engineering services in the fields of in-space manufacturing, spaceflight, and space exploration; scientific research in the fields of in-space manufacturing, pharmaceuticals and biology; scientific and technological services, namely, scientific research and analysis of data in the fields of in-space manufacturing, pharmaceuticals and biology; aerial surveying services
An antenna assembly may include a housing including a radome having at least an outer layer made of a melt-processable fluoropolymer material. The antenna assembly may further include an antenna system disposed within the housing.
A calibration system includes a beamformer lattice including at least a first beamformer, the first beamformer corresponding to a first subset of antenna cells of a plurality of antenna cells including a plurality of feed lines extending between the first beamformer and each of the first subset of antenna cells, and the first beamformer including a first calibration section for comparing a reference signal to a non-reference signal; and a first calibration line corresponding with the first beamformer, wherein the first calibration line is configured to deliver a first reference signal (mTx) from the first beamformer to be received by a first antenna feed line for comparison with a first non-reference signal (Rx) in the first beamformer, and/or wherein the first calibration line is configured to deliver a second non-reference signal (Tx) from a second antenna feed line for comparison with a second reference signal (mRx) in the first beamformer.
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
H01Q 1/48 - Moyens de mise à la terreÉcrans de terreContrepoids
H01Q 3/36 - 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 faisant varier la phase par des moyens électriques avec des déphaseurs variables
10.
TILTED EARTH-BASED ANTENNA SYSTEMS AND METHODS OF TILTING FOR COMMUNICATION WITH A SATELLITE SYSTEM
In one embodiment of the present disclosure, a satellite communication system includes a satellite constellation including a plurality of satellites in non-geosynchronous orbit (non-GEO), wherein at least some of the plurality of satellites travel in a first orbital path at a first inclination, and an end point terminal having an earth-based geographic location, the end point terminal having an antenna system defining a field of regard for communicating with the satellite constellation, wherein the field of regard is a limited field of regard, wherein the field of regard is tilted from a non-tilted position to a tilted position, and wherein the tilt angle of the tilted position is a function of the latitude of the geographic location.
A method of calibration a transmit (Tx) phased array antenna is provided. The method includes transmitting a first RF signal to a first signal chain associated with a first antenna element of the plurality of antenna elements, wherein the first RF signal is generated in the at least one transmit (Tx) section; transmitting a second RF signal to a second signal chain associated with a second antenna element of the plurality of antenna elements. The method includes determining one or more characteristics associated with propagation of RF signals along a portion of a calibration line disposed between antenna elements and adjusting one or more signal chains associated with the antenna elements based at least in part on determined characteristics associated with propagation of RF signals along a portion of the calibration line.
An antenna calibration system for a phased array antenna in accordance with one embodiment of the present disclosure generally includes: a beamformer, wherein the beamformer includes a calibration section for comparing a reference signal to a non-reference signal and a first operating antenna corresponding with the beamformer. In some implementations, the first operating antenna is configured to deliver a first reference signal (mTx) from the beamformer to be received by a second operating antenna for comparison with a first non-reference signal (Rx) in the beamformer, and/or the first operating antenna is configured to receive a second non-reference signal (Tx) from a third operating antenna for comparison with a second reference signal (mRx) in the beamformer.
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
H01Q 1/48 - Moyens de mise à la terreÉcrans de terreContrepoids
In an embodiment, an apparatus includes a first radio frequency (RF) section configured to generate a RF calibration signal based on modulating a calibration signal. The calibration signal comprises an orthogonal code based signal. The apparatus includes a second RF section configured to receive the RF calibration signal and configured to generate a received calibration signal based on demodulating the RF calibration signal. The apparatus includes a calibration section. The received calibration signal and a reference signal associated with the RF calibration signal comprise inputs to the calibration section. The calibration section is configured to determine one or more of gain, baseband delay, or RF delay compensation values, based on the inputs, to calibrate the first RF section.
H04B 17/11 - SurveillanceTests d’émetteurs pour l’étalonnage
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
H01Q 3/38 - 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 faisant varier la phase par des moyens électriques avec des déphaseurs variables les déphaseurs étant numériques
H01Q 3/42 - 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 faisant varier la phase par des moyens électriques utilisant un mélangeur de fréquences
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 1/38 - 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
H04B 17/12 - SurveillanceTests d’émetteurs pour l’étalonnage d’antennes d’émission, p. ex. de l’amplitude ou de la phase
CONFIGURABLE ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) SIGNAL AND TRANSMITTER AND RECEIVER FOR SATELLITE TO GATEWAY UPLINK AND DOWNLINK COMMUNICATIONS
A modem is configurable on a satellite, user terminal or gateway generates a radio frequency (RF) signal using an orthogonal frequency division multiplexing (OFDM) protocol including a radio frame including one or more bursts. A burst of the one or more bursts includes a first portion including burst detection data, a second portion including channel characteristic estimation data, a third portion including payload data, and fourth and fifth portions including pilot data. The first portion in a time domain is included in the burst prior to the second, third, fourth, and fifth portions. The first portion can include a pseudo-random noise sequence inserted in the time domain. The same physical modem can be configured to transmit signals on an uplink or downlink between a user terminal and a satellite or on the uplink or downlink between the satellite and the gateway.
An apparatus includes a plurality of conductive structures having first sides and second sides opposite the first sides, wherein the second sides of the plurality of conductive structures are configured to be physically coupleable with a printed circuit board (PCB) of a receiver, a transmitter, or a transceiver. The first sides of the plurality of conductive structures are configured to be spaced from the PCB by a first distance when the plurality of conductive structures is physically coupled with the PCB. The apparatus includes an antenna having a first side and a second side opposite the first side. The second side of the antenna is disposed closer to the plurality of conductive structures than the first side of the antenna when the plurality of conductive structures is physically coupled with the PCB.
H01Q 1/38 - Forme structurale pour éléments rayonnants, p. ex. cône, spirale, parapluie formés par une couche conductrice sur un support isolant
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
In an embodiment, a method includes generating an initial network entry request. The method further includes in response to the initial network entry request, finding, via a user terminal, a satellite based on a search of a sky. The search of the sky comprises sequentially changing a beam pointing direction of the user terminal. The satellite is assigned to downlink to a geographic cell associated with the user terminal. The method includes generating an uplink radio frame associated with the initial network entry request at a particular portion of the uplink radio frame for the satellite.
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
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
An antenna assembly in accordance with one embodiment of the present disclosure includes a stack patch antenna assembly defining a plurality of antenna cells made from a plurality of patches, wherein the stack patch antenna assembly includes a first patch layer separated from a second patch layer by a spacer; a beamformer lattice including one or more beamformers, wherein each beamformer corresponds to a subset of antenna cells of the plurality of antenna cells; and a PCB assembly made up from a plurality of layers, the PCB assembly having a feed structure from the stack patch antenna assembly to the beamformer lattice disposed in the PCB assembly, wherein the stack patch antenna assembly is external to the PCB assembly.
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
H01Q 1/48 - Moyens de mise à la terreÉcrans de terreContrepoids
Systems and techniques for beam-to-beam (B2B) coupling cancellation are disclosed. In one example, a process includes obtaining, at a first FE of a serially fed FE network, a first RF signal and a second RF signal; outputting, from the first FE, a first through path RF signal based on the first RF signal and a second through path RF signal based on the second RF signal; obtaining, at a second FE of the serially fed FE network, the first through path RF signal and the second through path RF signal; and applying one or more phase shifts to the first RF signal, the second RF signal, the first through path RF signal, or the second through path RF signal to at least partially cancel the coupling component associated with the cross-coupling between the first signal path of the first FE and the second signal path of the first FE.
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
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
Systems and techniques for coupling cancellation are disclosed. A method includes obtaining, at a first individual FE of a serially fed FE network, an RF signal; transmitting the RF signal from a first antenna element coupled to the first individual FE; transmitting a through path RF signal associated with the RF signal to a second individual FE of the serially fed FE network; transmitting the through path RF signal from a second antenna element coupled to the second individual FE; and cancelling a feedback component associated with transmission of the RF signal from the first antenna element with a feedback component associated with transmission of the through path RF signal from the second antenna element or cancelling a feedforward component associated with transmission of the RF signal from the first antenna element with a feedforward component associated with transmission of the through path RF signal from the second antenna element.
H01Q 1/52 - Moyens pour réduire le couplage entre les antennesMoyens pour réduire le couplage entre une antenne et une autre structure
H01Q 3/36 - 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 faisant varier la phase par des moyens électriques avec des déphaseurs variables
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
An antenna assembly may include a housing including a radome having at least an outer layer made of a melt-processable fluoropolymer material. The antenna assembly may further include an antenna system disposed within the housing.
In an embodiment, an apparatus includes an integrated circuit (IC) chip configured to receive a timing signal and a first reference clock signal and generate a first reference time signal based on the timing signal and the first reference clock signal. The IC chip is configured to generate a second reference time signal based on the first reference time signal and a second reference clock signal, different from the first reference clock signal The second reference time signal specifies a count of a number of cycles of the second reference clock signal starting from a particular cycle of the second reference clock signal. The IC chip is configured to synchronize one or more actions performed by the IC chip based on the second reference time signal.
H04L 7/033 - Commande de vitesse ou de phase au moyen des signaux de code reçus, les signaux ne contenant aucune information de synchronisation particulière en utilisant les transitions du signal reçu pour commander la phase de moyens générateurs du signal de synchronisation, p. ex. en utilisant une boucle verrouillée en phase
In an embodiment, an apparatus includes a first integrated circuit (IC) chip comprising a first phase lock loop (PLL) configured to generate a first output clock signal and a second IC chip comprising a second PLL configured to generate a second output clock signal. The first output clock signal and the second output clock signal are synchronized based on a reference time signal.
H03L 7/07 - Commande automatique de fréquence ou de phaseSynchronisation utilisant un signal de référence qui est appliqué à une boucle verrouillée en fréquence ou en phase utilisant plusieurs boucles, p. ex. pour la génération d'un signal d'horloge redondant
H03L 7/197 - Synthèse de fréquence indirecte, c.-à-d. production d'une fréquence désirée parmi un certain nombre de fréquences prédéterminées en utilisant une boucle verrouillée en fréquence ou en phase en utilisant un diviseur de fréquence ou un compteur dans la boucle une différence de temps étant utilisée pour verrouiller la boucle, le compteur comptant entre des nombres variables dans le temps ou le diviseur de fréquence divisant par un facteur variable dans le temps, p. ex. pour obtenir une division de fréquence fractionnaire
In an embodiment, a method includes determining a first beam pointing vector associated with an antenna assembly by searching for a satellite from a plurality of satellites. The method includes maintaining a communication link with the satellite by determining a plurality of beam pointing vectors that converge to a signal quality value. The method includes obtaining, from the satellite, satellite ephemeris information of the satellite and one or more of remaining satellites of the plurality of satellites. The method includes determining an estimated orientation of the antenna assembly based on the plurality of beam pointing vectors.
G01S 3/56 - Systèmes à faisceau de balayage conique utilisant des signaux qui indiquent une déviation de la direction de réception par rapport à l'axe du balayage
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
Systems, methods, and techniques are provided for a radio link control (RLC) sublayer. An example satellite or user terminal can include a divisional of layer 2 of the OSI protocol layer structure. An example method includes providing a RLC sublayer on top of a MAC sublayer and adaptively switching, via the RLC sublayer and based on external data, between an unacknowledged mode and an acknowledged mode for the electronic communications. If the RLC sublayer is operating in the unacknowledged mode, the RLC sublayer provides one or more of (1) fragmentation and reassembly of service data units; (2) a use of RLC headers; and/or (3) no delivery guarantees. If the RLC sublayer is operating in the acknowledged mode, the RLC sublayer provides reliability in a sequence delivery service and one or more of (1) fragmentation and reassembly of service data units; and/or (2) the use of RLC headers.
A wireless communications system includes a pre-distortion actuator configured to receive a carrier-modulated signal and convert the carrier-modulated signal into an output signal, the pre-distortion actuator comprising a behavioral model that models a transmit chain of the system including at least one antenna and predict an input-output relationship of the transmit chain of the system between an input to the transmit chain to an output of the transmit chain. The system includes a phased antenna array configured to transmit the output signal. The phased antenna array includes a plurality of antenna elements. The pre-distortion actuator is configured to generate the output signal by applying a correction to the carrier-modulated input signal that cancels out nonlinearities The behavioral model is updated based on feedback from a receiver from a previous output signal transmitted to the receiver.
Configurable orthogonal frequency division multiplexing (OFDM) signal and transmitter and receiver for satellite to gateway uplink and downlink communications
A modem is configurable on a satellite, user terminal or gateway generates a radio frequency (RF) signal using an orthogonal frequency division multiplexing (OFDM) protocol including a radio frame including one or more bursts. A burst of the one or more bursts includes a first portion including burst detection data, a second portion including channel characteristic estimation data, a third portion including payload data, and fourth and fifth portions including pilot data. The first portion in a time domain is included in the burst prior to the second, third, fourth, and fifth portions. The first portion can include a pseudo-random noise sequence inserted in the time domain. The same physical modem can be configured to transmit signals on an uplink or downlink between a user terminal and a satellite or on the uplink or downlink between the satellite and the gateway.
In one embodiment of the present disclosure, an antenna apparatus includes a housing assembly including a radome portion and a lower enclosure portion, wherein the radome portion and lower enclosure portion are couplable to form an inner compartment for housing antenna components of the antenna assembly, an antenna stack assembly disposed within the inner compartment, wherein the antenna stack assembly generates heat when in operation, and a heat transfer system within the inner compartment configured to facilitate the flow of heat toward the radome portion.
H01Q 21/06 - Réseaux d'unités d'antennes, de même polarisation, excitées individuellement et espacées entre elles
H01Q 21/10 - Disposition sur une même ligne d'unités conductrices sensiblement rectilignes et allongées
H01Q 23/00 - Antennes comportant des circuits ou des éléments de circuit actifs qui leur sont intégrés ou liés
32.
CONFIGURABLE ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) SIGNAL AND TRANSMITTER AND RECEIVER FOR SATELLITE TO USER TERMINAL DOWNLINK COMMUNICATIONS
A modem is configured to receive a transmitted waveform transmitted from a satellite (SAT) to a user terminal (UT). The modem includes: a receiver, on the UT, configured to receive the transmitted waveform from the SAT, the transmitted waveform comprising first resource blocks intended for the UT and second resource blocks intended for a second UT, a first set of components configured with the receiver on the UT to process the transmitted waveform with the first resource blocks and the second resource blocks, a multi-user demapper configured with the receiver to extract the first resource blocks from the transmitted waveform to yield a per-user signal, and a second set of components configured within the receiver to demodulate and decode the first resource blocks in the per-user signal.
Technologies are provided for variable gain amplifiers (VGAs). An example VGA includes a resistor ladder network comprising resistor legs coupled to a first plurality of resistors and a second plurality of resistors, a first set of differential switches connected to the resistor ladder network, a second set of differential switches connected to a set of output nodes, a third set of differential switches connected to the resistor ladder network, a fourth set of differential switches connected to the set of output nodes, and a fifth transistor and a sixth transistor comprising a differential pair coupled to a differential input signal. The fifth transistor is connected to the first set of differential switches and the sixth transistor connected to the third set of differential switches.
In an embodiment, an apparatus includes an antenna assembly configured to transmit and receive beams in time-varying directions, and a beam steering controller configured to determine a first beam pointing vector by searching for a satellite included in the communication system. The antenna assembly maintains a communication link with the satellite in a direction associated with the beam pointing vector, the satellite associated with the beam pointing vector. The beam steering controller is configured to obtain, from the satellite, satellite ephemeris information of the satellite and one or more additional satellites. The beam steering controller is configured to determine an orientation of the antenna assembly based on the satellite ephemeris information and the beam pointing vector.
H04W 16/28 - Structures des cellules utilisant l'orientation du faisceau
G01S 3/56 - Systèmes à faisceau de balayage conique utilisant des signaux qui indiquent une déviation de la direction de réception par rapport à l'axe du balayage
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
A phased array antenna system includes a carrier, a first antenna element and a second antenna element coupled to a first side of the carrier, the second antenna element spaced apart from the first antenna element by a space; and a signal conditioning module including a support structure having a first side and a second side opposite the first side, one or more signal conditioning elements coupled to the first side of the support structure, and a plurality of coupling elements coupled to the second side of the support structure. The signal conditioning module is coupled to the first side of the carrier and disposed in the space on the first side of the carrier between the first antenna element and the second antenna element. At least one coupling element is electrically coupled to the carrier. The signal conditioning module is electrically coupled to the first antenna element.
H01Q 21/08 - Réseaux d'unités d'antennes, de même polarisation, excitées individuellement et espacées entre elles les unités étant espacées le long du trajet rectiligne ou adjacent à celui-ci
H01Q 1/38 - Forme structurale pour éléments rayonnants, p. ex. cône, spirale, parapluie formés par une couche conductrice sur un support isolant
H01Q 1/52 - Moyens pour réduire le couplage entre les antennesMoyens pour réduire le couplage entre une antenne et une autre structure
Systems, methods, and computer-readable media are provided for hybrid beamforming. An example method can include determining a plurality of digital beamforming weights associated with a plurality of digital beamforming paths between digital beamformers and groups of analog beamforming circuits in a phased array antenna, each digital beamforming path being coupled to a group of analog beamforming circuits and each analog beamforming circuit being coupled to a respective set of antenna elements of the phased array antenna, and determining analog beamforming weights associated with the groups of analog beamforming circuits. The analog beamforming weights are estimated to put analog beamforming paths associated with the groups of analog beamforming circuits in a desired phase and gain relationship with each other. The method can include varying, based at least partly on the analog beamforming weights, a signal phase shift across the analog beamforming paths associated with the groups of analog beamforming circuits.
A phased array antenna system is provided. The phased array antenna system includes: a beamformer (BF) module comprising an antenna port coupled to an antenna element. The BF module includes first, second, and third radio frequency (RF) ports. The first and third RF ports are configured as a first differential signal pair and the second and third RF ports are configured as a second differential signal pair. The first RF port corresponds to a first RF signal and the second RF port corresponds to a second RF signal, different from the first RF signal.
H04B 1/405 - Circuits utilisant le même oscillateur pour générer à la fois la fréquence de l’émetteur et la fréquence de l’oscillateur local du récepteur avec des canaux discrets multiples
H01Q 3/34 - 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 faisant varier la phase par des moyens électriques
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
40.
System and method of providing a radio link control sublayer
Systems, methods, and techniques are provided for a radio link control (RLC) sublayer. An example satellite or user terminal can include a divisional of layer 2 of the OSI protocol layer structure. An example method includes providing a RLC sublayer on top of a MAC sublayer and adaptively switching, via the RLC sublayer and based on external data, between an unacknowledged mode and an acknowledged mode for the electronic communications. If the RLC sublayer is operating in the unacknowledged mode, the RLC sublayer provides one or more of (1) fragmentation and reassembly of service data units; (2) a use of RLC headers; and/or (3) no delivery guarantees. If the RLC sublayer is operating in the acknowledged mode, the RLC sublayer provides reliability in a sequence delivery service and one or more of (1) fragmentation and reassembly of service data units; and/or (2) the use of RLC headers.
Systems and techniques for distributing reference signals are disclosed. For example, a method includes generating, by a first phase-locked loop (PLL) included in a first beamformer (BF) chip, a first local oscillator (LO) signal; generating, by a second PLL included in a second BF chip, a second LO signal; and in a first BF configuration, transmitting radio frequency (RF) signals by a plurality of antenna elements based on the first LO signal. A first subset of the plurality of the antenna elements is associated with the first BF chip and a second subset of the plurality of antenna elements is associated with the second BF chip. The method includes, in a second BF configuration, receiving RF signals by the first subset of the plurality of antenna elements and the second subset of the plurality of antenna elements based on the second LO signal.
H04B 1/403 - Circuits utilisant le même oscillateur pour générer à la fois la fréquence de l’émetteur et la fréquence de l’oscillateur local du récepteur
H01Q 3/36 - 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 faisant varier la phase par des moyens électriques avec des déphaseurs variables
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
In an embodiment, an apparatus includes an antenna assembly configured to transmit and receive beams in time-varying directions, and a beam steering controller configured to determine a first beam pointing vector by searching for a satellite from a plurality of satellites included in the communication system. The antenna assembly maintains a communication link with a satellite of the plurality of satellites by determining a plurality of beam pointing vectors that converge to increasing signal quality measurements, the satellite associated with the first beam pointing vector. The beam steering controller is configured to obtain, from the satellite, satellite ephemeris information of the satellite and one or more of remaining satellites of the plurality of satellites. The beam steering controller is configured to determine an orientation of the antenna assembly based on the satellite ephemeris information and the plurality of beam pointing vectors.
H04W 16/28 - Structures des cellules utilisant l'orientation du faisceau
G01S 3/56 - Systèmes à faisceau de balayage conique utilisant des signaux qui indiquent une déviation de la direction de réception par rapport à l'axe du balayage
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
Systems, methods, and non-transitory media are provided for timing transmissions in a wireless communication system. An example method can include determining, at a satellite, a maximum round-trip propagation delay associated with one or more user terminals of a plurality of user terminals, determining, based on the maximum round-trip propagation delay, a respective downlink to uplink (DL/UL) offset for each user terminal, wherein the DL/UL offset comprises a time difference between a first downlink frame at the satellite and a first corresponding uplink frame at the satellite, transmitting a first downlink frame, receiving a first uplink frame from a first user terminal associated with the maximum round-trip propagation delay during the first corresponding uplink frame at the satellite, and receiving a second uplink frame from a second user terminal associated with a round-trip propagation delay less than the maximum round-trip propagation delay during the first corresponding uplink frame at the satellite.
09 - Appareils et instruments scientifiques et électriques
38 - Services de télécommunications
39 - Services de transport, emballage et entreposage; organisation de voyages
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Global Positioning System using satellite constellations;
Internet servers; telecommunication hardware, namely,
devices in the nature of satellite-based and earth-based
antenna systems that allow wireless connection to global
communication networks and wireless connection of electronic
devices to global communication networks, and accessories
required for facilitating such wireless connection, namely,
cables, travel cases, ethernet adaptors, and routers;
downloadable and recorded computer software for enabling the
transmission of information in the fields of meteorology,
climatology, geography, topography, oceanography, and human
and animal migration to telecommunications networks and
navigation devices; downloadable computer software for
enabling wireless connection to global communication
networks and wireless connection of electronic devices to
global communication networks; electronic global positioning
and geo-location systems devices, namely, global positioning
satellite-based receivers; all of the foregoing excluding
the US government's global positioning systems; equipment
for receiving, processing, and transmitting voice, video,
data and information via telecommunications and wireless
signals, satellites, and computers, namely, satellite
receivers, satellite receiver modules, transmitters of
electronic signals, multiplexers, decoding boxes, data
processors, integrated circuits, and accessories required
for facilitating the transmission of such voice, video, data
and information, namely, cables, travel cases, ethernet
adaptors, and routers; computer operating hardware and
downloadable and recorded computer operating software for
use in the aforementioned goods, satellite terminals, and
satellite earth stations. Internet service provider (ISP) services; satellite
telecommunications services, namely, transmission of a
wireless internet signal via satellites; providing third
party users with access to satellite telecommunications
infrastructure; telecommunication services, namely,
transmission and delivery of digital data, light files,
sound files, data, information and image signals, by means
of computer and satellite networks; collecting and
transmitting real-time data and images obtained via
satellites and space vehicles; satellite communication and
transmission services; wireless broadband communication
services; transmission of data, voice and video via
satellite; Interactive satellite communication services;
delivery of messages by electronic transmission; providing
telecommunications connections to the Internet;
telecommunications gateway services; providing high-speed
wireless internet access; providing multiple-user access to
the internet, global computer networks, and electronic
communications networks; providing access to global computer
information networks; telecommunications services, namely,
transmission of voice, data, graphics, images, audio and
video by means of telecommunications networks, wireless
communication networks, and the Internet; providing
information in the field of satellite telecommunications
services via a website; providing information via a website
relating to providing Internet access via satellite. Providing transportation and navigation information for use
in the fields of meteorology, climatology, geography,
topography, oceanography, and human and animal migration via
telecommunications networks and satellite aided navigation
devices; providing transportation and navigation information
via global positioning and geolocation wireless and
satellite networks, excluding the US government's global
positioning systems. Providing via a website geographic mapping data and images
obtained via satellites and space vehicles; cloud storage
services for electronic data and files; cloud computing
services; cloud computing featuring software for collecting,
tracking, monitoring and analyzing data obtained via
satellites and space vehicles in the fields of meteorology,
climatology, geography, topography, oceanography, human and
animal migration; cloud computing featuring software for
enabling and managing simultaneous, multiple modes of
communication via satellites; cloud computing featuring
software for use in connection with data processing, data
storage, data capture, data collection, data warehousing,
data management, data mining, database analytics, and secure
data sharing; satellite telecommunications technology
service to allow efficiencies of the carrier by creating
efficient use of bandwidth on a satellite transponder;
design, development, and maintenance of telecommunications
networks, software and apparatus in the field of satellite
communications; providing scientific research information in
the fields of meteorology, climatology, geography,
topography, oceanography, and human and animal migration via
telecommunication networks and wireless navigation devices;
providing online computer mapping services; research and
development of technology in the field of satellite
communications; engineering services in the field of
satellite communications; scientific research; scientific
and technological services, namely, scientific research and
analysis of data in the fields of meteorology, climatology,
geography, topography, and oceanography; electronic
monitoring of environmental and atmospheric conditions using
satellites and sensors; remote sensing services, namely,
aerial surveying through the use of satellites; searching
and retrieving information, sites, and other resources
available on computer networks for others in relation to
satellite data, recordings, and measurements; providing
scientific research information concerning satellite
internet services via a global information network.
45.
Configurable orthogonal frequency division multiplexing (OFDM) signal and transmitter and receiver for same
A modem is configurable on a satellite, user terminal or gateway generates a radio frequency (RF) signal using an orthogonal frequency division multiplexing (OFDM) protocol including a radio frame including one or more bursts. A burst of the one or more bursts includes a first portion including burst detection data, a second portion including channel characteristic estimation data, a third portion including payload data, and fourth and fifth portions including pilot data. The first portion in a time domain is included in the burst prior to the second, third, fourth, and fifth portions. The first portion can include a pseudo-random noise sequence inserted in the time domain. The same physical modem can be configured to transmit signals on an uplink or downlink between a user terminal and a satellite or on the uplink or downlink between the satellite and the gateway.
H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
46.
Configurable orthogonal frequency division multiplexing (OFDM) signal and transmitter and receiver for satellite to user terminal downlink communications
A modem is configurable on a satellite, user terminal or gateway generates a radio frequency (RF) signal using an orthogonal frequency division multiplexing (OFDM) protocol including a radio frame including one or more bursts. A burst of the one or more bursts includes a first portion including burst detection data, a second portion including channel characteristic estimation data, a third portion including payload data, and fourth and fifth portions including pilot data. The first portion in a time domain is included in the burst prior to the second, third, fourth, and fifth portions. The first portion can include a pseudo-random noise sequence inserted in the time domain. The same physical modem can be configured to transmit signals on an uplink or downlink between a user terminal and a satellite or on the uplink or downlink between the satellite and the gateway.
In one embodiment of the present disclosure, a device for detecting a zone of communication between a user terminal and a satellite constellation including a plurality of satellites in non-geosynchronous (non-GEO) orbit includes one or more processors and memory. The memory stores instructions that, as a result of being executed by the one or more processors, cause the device to: determine a location of the device, wherein the location corresponds to a field of regard for detecting the zone of communication, and wherein the field of regard corresponds to an antenna aperture of the phased array antenna; evaluate a level of communication between the phased array antenna and the satellite constellation associated with the field of regard; and output, to a user of the device, an indication of the level of communication between the phased array antenna and the satellite constellation associated with the field of regard.
In one embodiment of the present disclosure, a pan/tilt assembly for an antenna apparatus having a housing enclosing antenna components and a leg extending from the housing includes a first actuator for rotating a first gear, a second actuator for rotating a second gear, a third gear coupled to the leg and engaged by the first and second gears, and a tee having a first portion substantially transverse to a second portion, wherein the first portion has a first end rotatably received within the first gear and a second end rotatably received within the second gear, and wherein the second portion is rotatably received within the third gear.
F16M 11/12 - Moyens pour la fixation des appareilsMoyens permettant le réglage des appareils par rapport au banc permettant la rotation dans plus d'une direction
F16M 11/18 - Têtes des supports avec mécanisme déplaçant les appareils par rapport au banc
H01Q 3/08 - 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 utilisant un mouvement mécanique de l'ensemble d'antenne ou du système d'antenne pour faire varier deux coordonnées de l'orientation
49.
SPACECRAFT STACK ASSEMBLY AND METHOD FOR STACKING, SECURING, AND RELEASING SPACECRAFT
A method of deploying a plurality of spacecraft includes coupling the plurality of spacecraft in a stack to a payload adaptor, the stack extending along a longitudinal axis; launching the payload adaptor into an orbit; and decoupling an entirety of the stack from the payload adaptor after the payload adaptor reaches the orbit.
In one embodiment of the present disclosure, a satellite communication system includes a satellite constellation including a plurality of satellites in non-geosynchronous orbit (non-GEO), wherein at least some of the plurality of satellites travel in a first orbital path at a first inclination, and an end point terminal having an earth-based geographic location, the end point terminal having an antenna system defining a field of regard for communicating with the satellite constellation, wherein the field of regard is a limited field of regard, wherein the field of regard is tilted from a non-tilted position to a tilted position, and wherein the tilt angle of the tilted position is a function of the latitude of the geographic location.
Configurable orthogonal frequency division multiplexing (OFDM) signal and transmitter and receiver for user terminal to satellite uplink communications
A modem is configurable on a satellite, user terminal or gateway generates a radio frequency (RF) signal using an orthogonal frequency division multiplexing (OFDM) protocol including a radio frame including one or more bursts. A burst of the one or more bursts includes a first portion including burst detection data, a second portion including channel characteristic estimation data, a third portion including payload data, and fourth and fifth portions including pilot data. The first portion in a time domain is included in the burst prior to the second, third, fourth, and fifth portions. The first portion can include a pseudo-random noise sequence inserted in the time domain. The same physical modem can be configured to transmit signals on an uplink or downlink between a user terminal and a satellite or on the uplink or downlink between the satellite and the gateway.
Systems, methods, and non-transitory media are provided for synchronization of multi-user uplink transmissions. An example method can include receiving, by a user terminal, a downlink radio frame transmitted by a satellite; determining, by the user terminal, a downlink propagation delay associated with the downlink radio frame and an uplink propagation delay associated with an uplink radio frame from the user terminal to the satellite; based on the downlink propagation delay and the uplink propagation delay, determining, by the user terminal, an uplink transmission delay indicating an amount of time to delay a transmission of the uplink radio frame to the satellite so the uplink radio frame is received at the satellite at a same target time as one or more additional uplink radio frames from one or more additional user terminals; and transmitting, by the user terminal, the uplink radio frame at a time corresponding to the uplink transmission delay.
In an embodiment, a method includes determining a first beam pointing vector associated with an antenna assembly by searching for a satellite from a plurality of satellites. The method includes maintaining a communication link with the satellite by determining a plurality of beam pointing vectors that converge to a signal quality value. The method includes obtaining, from the satellite, satellite ephemeris information of the satellite and one or more of remaining satellites of the plurality of satellites. The method includes determining an estimated orientation of the antenna assembly based on one or more of the satellite ephemeris information and the plurality of beam pointing vector. The method includes determining a second beam pointing vector based on the estimated orientation, the satellite ephemeris information, and an approximate position information of the antenna assembly.
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
A solar array system associated with a spacecraft includes a solar array blanket portion moveable from a stowed configuration into a deployed configuration, an extendable frame coupled to the spacecraft and the blanket portion and moveable from at least a collapsed configuration into an extended configuration to move the solar array blanket portion from the stowed configuration into the deployed configuration, and at least one biasing member extending across an exterior portion of a first hinge assembly that is configured to bias at least a portion of the extendable frame into the deployed configuration.
In some embodiments, an antenna module includes an antenna element having a first side and a second side opposite the first side, the first side comprising a radiating side of the antenna element and a support structure disposed at the second side of the antenna element and configured to define a cavity, the support structure including a portion configured to reduce signal leakage between the antenna element and the cavity.
H01Q 1/24 - SupportsMoyens de montage par association structurale avec d'autres équipements ou objets avec appareil récepteur
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
H05K 1/18 - Circuits imprimés associés structurellement à des composants électriques non imprimés
Systems, methods, and non-transitory media are provided for low latency handovers. An example method can include receiving, by a satellite, a schedule of communications between the satellite and one or more gateways; requesting, based on the schedule, a handover from a link between the satellite and a gateway to a different link between the satellite and the gateway or a different gateway; prior to a completion of the handover, processing packets bicasted over the link between the satellite and the gateway and the different link between the satellite and the gateway or the different gateway; performing the handover from the link between the satellite and the gateway to the different link between the satellite and the gateway or the different gateway; and after the handover, transmitting, by the satellite, one or more packets via the different link between the satellite and the gateway or the different gateway.
09 - Appareils et instruments scientifiques et électriques
38 - Services de télécommunications
39 - Services de transport, emballage et entreposage; organisation de voyages
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
(1) Global Positioning System using satellite constellations; Internet servers; telecommunication hardware, namely, devices in the nature of satellite-based and earth-based antenna systems that allow wireless connection to global communication networks and wireless connection of electronic devices to global communication networks, and accessories required for facilitating such wireless connection, namely, cables, travel cases, ethernet adaptors, and routers; downloadable and recorded computer software for enabling the transmission of information in the fields of meteorology, climatology, geography, topography, oceanography, and human and animal migration to telecommunications networks and navigation devices; downloadable computer software for enabling wireless connection to global communication networks and wireless connection of electronic devices to global communication networks; electronic global positioning and geo-location systems devices, namely, global positioning satellite-based receivers; all of the foregoing excluding the US government's global positioning systems; equipment for receiving, processing, and transmitting voice, video, data and information via telecommunications and wireless signals, satellites, and computers, namely, satellite receivers, satellite receiver modules, transmitters of electronic signals, multiplexers, decoding boxes, data processors, integrated circuits, and accessories required for facilitating the transmission of such voice, video, data and information, namely, cables, travel cases, ethernet adaptors, and routers; computer operating hardware and downloadable and recorded computer operating software for use in the aforementioned goods, satellite terminals, and satellite earth stations. (1) Internet service provider (ISP) services; satellite telecommunications services, namely, transmission of a wireless internet signal via satellites; providing third party users with access to satellite telecommunications infrastructure; telecommunication services, namely, transmission and delivery of digital data, light files, sound files, data, information and image signals, by means of computer and satellite networks; collecting and transmitting real-time data and images obtained via satellites and space vehicles; satellite communication and transmission services; wireless broadband communication services; transmission of data, voice and video via satellite; Interactive satellite communication services; delivery of messages by electronic transmission; providing telecommunications connections to the Internet; telecommunications gateway services; providing high-speed wireless internet access; providing multiple-user access to the internet, global computer networks, and electronic communications networks; providing access to global computer information networks; telecommunications services, namely, transmission of voice, data, graphics, images, audio and video by means of telecommunications networks, wireless communication networks, and the Internet; providing information in the field of satellite telecommunications services via a website; providing information via a website relating to providing Internet access via satellite.
(2) Providing transportation and navigation information for use in the fields of meteorology, climatology, geography, topography, oceanography, and human and animal migration via telecommunications networks and satellite aided navigation devices; providing transportation and navigation information via global positioning and geolocation wireless and satellite networks, excluding the US government's global positioning systems.
(3) Providing via a website geographic mapping data and images obtained via satellites and space vehicles; cloud storage services for electronic data and files; cloud computing services; cloud computing featuring software for collecting, tracking, monitoring and analyzing data obtained via satellites and space vehicles in the fields of meteorology, climatology, geography, topography, oceanography, human and animal migration; cloud computing featuring software for enabling and managing simultaneous, multiple modes of communication via satellites; cloud computing featuring software for use in connection with data processing, data storage, data capture, data collection, data warehousing, data management, data mining, database analytics, and secure data sharing; satellite telecommunications technology service to allow efficiencies of the carrier by creating efficient use of bandwidth on a satellite transponder; design, development, and maintenance of telecommunications networks, software and apparatus in the field of satellite communications; providing scientific research information in the fields of meteorology, climatology, geography, topography, oceanography, and human and animal migration via telecommunication networks and wireless navigation devices; providing online computer mapping services; research and development of technology in the field of satellite communications; engineering services in the field of satellite communications; scientific research; scientific and technological services, namely, scientific research and analysis of data in the fields of meteorology, climatology, geography, topography, and oceanography; electronic monitoring of environmental and atmospheric conditions using satellites and sensors; remote sensing services, namely, aerial surveying through the use of satellites; searching and retrieving information, sites, and other resources available on computer networks for others in relation to satellite data, recordings, and measurements; providing scientific research information concerning satellite internet services via a global information network.
In an embodiment, an apparatus includes a first digital beamformer (DBF) associated with a first subset of antennas of a phased array antenna, the first DBF including a transmit section associated with transmission of a first signal at a first frequency in a transmit mode and a receive section associated with receiving of a second signal at a second frequency in a receive mode, the second frequency being different from the first frequency. The apparatus includes a second DBF associated with a second subset of antennas of the phased array antenna. The first and second DBFs are configured to receive a local oscillator signal having the first frequency from a common local oscillator in the transmit mode and receive the local oscillator signal having the second frequency from the common local oscillator in the receive mode.
H01Q 3/36 - 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 faisant varier la phase par des moyens électriques avec des déphaseurs variables
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
H04B 3/52 - Systèmes de transmission entre stations fixes, au moyen de guides d'onde
H04B 3/54 - Systèmes de transmission par lignes de réseau de distribution d'énergie
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
Systems, methods, and non-transitory media are provided for timing half-duplex transmissions in a wireless communication system. An example method can include receiving, by a user terminal (UT), a radio frame transmitted by a satellite to a group of UTs; identifying an offset delay defined in the radio frame for scheduling transmissions between the satellite and each UT in the group of UTs, the offset delay providing non-overlapping time intervals for receive, process, and transmit operations at each UT; determining, based on the offset delay and a time when the radio frame was received by the UT, a time for transmitting an uplink radio burst to the satellite, wherein the uplink radio burst transmitted at the time is estimated to arrive at the satellite within a same radio frame interval as uplink radio bursts from other UTs; and transmitting, to the satellite, the uplink radio burst at the time.
An integrated signal chain includes a waveguide network defined by first and second waveguide layers forming a waveguide stack. A first transmit waveguide channel (WGC) is configured to communicate first transmit electromagnetic signals from a first transmit port to an antenna feed port, and a first receive WGC is configured to communicate first receive electromagnetic signals from the antenna feed port to a first receive port. A transmit module is attached to an exterior side of the first waveguide layer, and the first transmit WGC couples the transmit module to the antenna. A receive module is attached to the exterior side of the first waveguide layer, and the first receive WGC couples the antenna to the receive module. A modem may be included. A thermal management assembly can be configured to dissipate heat from the modem, the receive module, and/or the transmit module.
An antenna calibration system for a phased array antenna in accordance with one embodiment of the present disclosure generally includes: a beamformer corresponding to a subset of antenna cells of a plurality of antenna cells, wherein the beamformer includes a calibration section for comparing a reference signal to a non-reference signal and a first operating antenna within the subset of antenna cells corresponding with the beamformer. In some implementations, the first operating antenna is configured to deliver a first reference signal (mTx) from the beamformer to be received by a second operating antenna for comparison with a first non-reference signal (Rx) in the beamformer, and/or the first operating antenna is configured to deliver a second non-reference signal (Tx) from a third operating antenna for comparison with a second reference signal (mRx) in the beamformer.
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
H01Q 1/48 - Moyens de mise à la terreÉcrans de terreContrepoids
A method of operating an uplink scheduler as part of a medium access control scheduler on a satellite includes selecting, from a plurality of user terminals, a first number of zero-bandwidth request user terminals from the plurality of user terminals, selecting, from the plurality of user terminals, a second number of non-zero-bandwidth request user terminals from the plurality of user terminals, binning the second number of non-zero-bandwidth request user terminals into a plurality of bins based on a respective bandwidth requirement for each non-zero-bandwidth request user terminal and based on a minimum user terminal grant and allocating, according to a grant allocation algorithm, a respective grant of radio resources in an uplink frame to each user terminal of the plurality of user terminals into a respective bin of the plurality of bins in an order associated with increasing bandwidth needs. A downlink scheduler is also disclosed.
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]
H04W 72/1268 - Jumelage du trafic à la planification, p. ex. affectation planifiée ou multiplexage de flux de flux de données en liaison ascendante
H04W 72/23 - Canaux de commande ou signalisation pour la gestion des ressources dans le sens descendant de la liaison sans fil, c.-à-d. en direction du terminal
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
In one embodiment of the present disclosure, a pan/tilt assembly for an antenna apparatus having a housing enclosing antenna components and a leg extending from the housing includes a first actuator for rotating a first gear, a second actuator for rotating a second gear, a third gear coupled to the leg and engaged by the first and second gears, and a tee having a first portion substantially transverse to a second portion, wherein the first portion has a first end rotatably received within the first gear and a second end rotatably received within the second gear, and wherein the second portion is rotatably received within the third gear.
F16M 11/12 - Moyens pour la fixation des appareilsMoyens permettant le réglage des appareils par rapport au banc permettant la rotation dans plus d'une direction
F16M 11/18 - Têtes des supports avec mécanisme déplaçant les appareils par rapport au banc
H01Q 3/08 - 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 utilisant un mouvement mécanique de l'ensemble d'antenne ou du système d'antenne pour faire varier deux coordonnées de l'orientation
65.
Waveguide assembly comprising first and second waveguide portions joined together through a gap interface and communication system formed therefrom
In one embodiment, a waveguide assembly includes a first waveguide portion having a first end, a second end, and a first waveguide channel extending between the first end and the second end, and a second waveguide portion having a first end, a second end, and a second waveguide channel extending between the first end and the second end, wherein the first waveguide portion and the second waveguide portion are configured to connect such that the first waveguide channel and the second waveguide channel form a combined channel, wherein the combined channel includes a gap interface between the first waveguide channel and the second waveguide channel.
H01P 3/127 - Guides d'ondes creux présentant une section circulaire, elliptique ou parabolique
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
H01P 1/165 - Dispositifs auxiliaires pour faire tourner le plan de polarisation
H01P 1/161 - Sélecteurs de mode, p. ex. pour empêcher ou favoriser la propagation suivant un mode donnéConvertisseurs de mode fonctionnant selon deux modes orthogonaux indépendants, p. ex. transducteurs orthomodes
In an embodiment, an apparatus includes one or more electrical components. The one or more electrical components are configured to encode each data beam of a first plurality of data beams of a first channel to generate an encoded first plurality of data beams. The one or more electrical components are configured to encode each data beam of a second plurality of data beams of a second channel to generate an encoded second plurality of data beams. The one or more electrical components are configured to generate a combined channel comprising an aggregation of at least a portion of the encoded first plurality of data beams and at least a portion of the encoded second plurality of data beams.
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
H04W 72/044 - Affectation de ressources sans fil sur la base du type de ressources affectées
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
In an embodiment, a receiver included in a communications system is configured to receive a radio frequency (RF) signal from a phased array antenna, the RF signal comprising at least a portion of a plurality of data beams included in a single channel, generate a plurality of channel signals based on the RF signal. Generating the plurality of channel signals includes separating the RF signal into a plurality of channels in which each channel of the plurality of channels includes at least a portion of a respective subset of the plurality of data beams. The receiver is further configured to decode each data beam of the plurality of channel signals with a respective phase and a respective time delay. The receiver is further configured to output the plurality of data beams of the plurality of channels.
H04L 7/00 - Dispositions pour synchroniser le récepteur avec l'émetteur
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
68.
System and method of providing an adaptive modulation and coding scheme
A method for downlink link adaptation includes receiving, from a satellite and at a user terminal, a first data packet data unit according to a first downlink modulation and coding scheme (MCS), computing error vector magnitude data associated with the first data packet data unit, generating, based on one or more of the error vector magnitude data, user terminal signal-to-noise-ratio feedback based on a constant times a previous user terminal signal-to-noise-ratio and a current user terminal signal-to-noise-ratio, and transmitting an uplink packet data unit having a downlink block error rate and the user terminal signal-to-noise-ratio feedback. A satellite runs a link adaptation algorithm based on the user terminal signal-to-noise-ratio feedback and block error rate to generate a second downlink MCS. The method includes receiving at the user terminal a second data packet data unit according to the second downlink MCS for the satellite-to-user-terminal downlink. Uplink link adaptation is also disclosed.
H04W 72/54 - Critères d’affectation ou de planification des ressources sans fil sur la base de critères de qualité
H04B 17/336 - Rapport signal/interférence ou rapport porteuse/interférence
H04B 17/382 - SurveillanceTests de canaux de propagation pour l’attribution de ressources, le contrôle d’accès ou le transfert
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
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
69.
Antenna assembly including feed system having a sub-reflector
In one embodiment, a parabolic antenna assembly includes a main reflector, a feed system in RF communication with the main reflector including a horn and a dielectric portion, and a sub-reflector in RF communication with the feed assembly, wherein the sub-reflector includes a body portion and a stem portion mechanically coupled to one another, wherein a reflecting surface of the sub-reflector is defined by at least a portion of the body portion and at least a portion of the stem portion, wherein the dielectric portion spaces the sub-reflector from the horn, and wherein the sub-reflector includes an axially-symmetric choke for providing virtual continuity at the reflecting surface.
H01Q 19/19 - Combinaisons d'éléments actifs primaires d'antennes avec des dispositifs secondaires, p. ex. avec des dispositifs quasi optiques, pour donner à une antenne une caractéristique directionnelle désirée utilisant des surfaces réfléchissantes comportant plusieurs surfaces réfléchissantes comprenant une surface réfléchissante principale concave associée à une surface réfléchissante auxiliaire
Systems and methods for using the shield of a cable for communication are disclosed. An example system includes a first electronic device, a second electronic device and a cable coupled to the first electronic device and to the second electronic device and having a conductive material independent of at least one communication line. The first electronic device and the second electronic device can be configured to communicate using a first communication protocol via the at least one communication line and using a second communication protocol via the conductive material. Communications using the second communication protocol can include a feedback signal to indicate a status of at least one of the first electronic device or the second electronic device. The first electronic device can be a user terminal configured to communicate wirelessly with a satellite, and the second electronic device can be a router configured to communicate with at least one user device.
H01B 11/06 - Câbles à paires ou quartes torsadées pourvus de moyens propres à réduire les effets de perturbations électromagnétiques ou électrostatiques, p. ex. écrans
H01B 7/29 - Protection contre les dommages provoqués par des facteurs extérieurs, p. ex. gaines ou armatures par des températures extrêmes ou par les flammes
H01B 7/282 - Protection contre les dommages provoqués par des facteurs extérieurs, p. ex. gaines ou armatures par l'humidité, la corrosion, les attaques chimiques ou les conditions atmosphériques empêchant la pénétration de fluides dans les conducteurs ou les câbles
A chassis for a spacecraft includes a solid plate that includes a first side and an opposing second side, and also includes a plurality of transverse walls extending from a surface of the second side and configured to radiate heat generated from the spacecraft into outer space.
Disclosed are various systems and methods for addressing the efficiency issues discussed in the application. An example system includes a control system, a vertical array antenna having a plurality of antennas that generates a planar zone beam, an omni-directional antenna, a switch for switching, as managed by the control system, between the vertical array antenna and the omni-directional antenna; and a beamforming component that provides, as managed by the control system, beamforming of the planar zone beam. The vertical array antenna can include multiple high gain antennas that produce an antenna gain for the planar zone beam of between 12 and 22 dBi.
H01Q 3/36 - 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 faisant varier la phase par des moyens électriques avec des déphaseurs variables
A serially fed front end (FE) network is provided. The serially fed FE network includes a first FE comprising a first FE input/output (IO), a second FE IO, and a first antenna IO coupled to a first antenna element of a plurality of antenna elements. The first FE IO of the first FE is electrically coupled to a particular beamformer (BF) IO of a BF. The serially fed FE network includes a second FE comprising a first FE IO coupled to the second FE IO of the first FE, a second FE IO of the second FE, and a second antenna IO coupled to a second antenna element of the plurality of antenna elements. The BF is communicatively coupled by the serially fed FE network to transmit to and/or receive signals from the first and second antenna elements of the plurality of antenna elements.
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
H01Q 3/28 - 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 faisant varier l'amplitude
H01Q 3/36 - 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 faisant varier la phase par des moyens électriques avec des déphaseurs variables
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
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
Systems, methods, and non-transitory media are provided for low latency handovers. An example method can include receiving, by a user terminal associated with a cell served by a satellite, a schedule of communications between the user terminal and one or more satellites, wherein the one or more satellites comprises the satellite and a different satellite, and wherein the schedule of communications is obtained by the user terminal from the satellite; requesting, based on the schedule, a handover from a beam of the satellite to a different beam of one of the satellite or the different satellite; performing the handover from the beam of the satellite to the different beam of the one of the satellite or the different satellite; and after the handover, transmitting, by the user terminal, one or more packets via the different beam of the one of the satellite or the different satellite.
H04W 36/06 - Resélection d'une ressource de communication au point d'accès serveur
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
A method of releasing spacecraft from a rocket includes arranging spacecraft in a stack on a rocket, launching the rocket until it attains orbital velocity, imposing a flat spin on the rocket, and releasing the entire stack from the rocket during the flat spin. In one aspect, the method includes applying a compressive load along a length of the stack, launching the rocket until it attains orbital velocity, imposing a flat spin on the rocket, and releasing the compressive load to allow the entire stack to separate from the rocket during the flat spin.
In an embodiment, an apparatus includes an antenna assembly, a modem, and a beam steering controller. A beam steering controller is configured to determine a beam pointing direction of the antenna assembly to be able to one or both of switch a first communication link with a first satellite to a second communication link with a second satellite or establish and maintain the first communication link with the first satellite. At a start of a determination of the beam pointing direction, one or more of an orientation of the antenna assembly is unknown, positions of a plurality of satellites are unknown, or downlink frequencies of the plurality of satellites are unknown.
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
In an embodiment, an apparatus includes an integrated circuit (IC) chip configured to receive a timing signal and a first reference clock signal and generate a first reference time signal based on the timing signal and the first reference clock signal. The IC chip is configured to generate a second reference time signal based on the first reference time signal and a second reference clock signal, different from the first reference clock signal The second reference time signal specifies a count of a number of cycles of the second reference clock signal starting from a particular cycle of the second reference clock signal. The IC chip is configured to synchronize one or more actions performed by the IC chip based on one or more of the first reference time signal or the second reference time signal.
H04L 7/033 - Commande de vitesse ou de phase au moyen des signaux de code reçus, les signaux ne contenant aucune information de synchronisation particulière en utilisant les transitions du signal reçu pour commander la phase de moyens générateurs du signal de synchronisation, p. ex. en utilisant une boucle verrouillée en phase
An integrated signal chain includes a waveguide network defined by first and second waveguide layers forming a waveguide stack. A first transmit waveguide channel (WGC) is configured to communicate first transmit electromagnetic signals from a first transmit port to an antenna feed port, and a first receive WGC is configured to communicate first receive electromagnetic signals from the antenna feed port to a first receive port. A transmit module is attached to an exterior side of the first waveguide layer, and the first transmit WGC couples the transmit module to the antenna. A receive module is attached to the exterior side of the first waveguide layer, and the first receive WGC couples the antenna to the receive module. A modem may be included. A thermal management assembly can be configured to dissipate heat from the modem, the receive module, and/or the transmit module.
In an embodiment, a user terminal includes a communication module (CM) configured to generate an initial network entry request; an antenna assembly configured to find, in response to the initial network entry request, a satellite based on a search of a sky. The search of the sky includes sequentially changing a beam pointing direction of the antenna assembly. The satellite is assigned to downlink to a geographic cell associated with the user terminal. The user terminal includes a media access control (MAC) layer component configured to generate an uplink radio frame including a random access channel (RACH) request associated with the initial network entry request at a particular portion of the uplink radio frame for the satellite.
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
A spacecraft chassis includes a chassis body defined by first and second opposing sides bound by a perimeter, wherein at least one heat-generating component is configured to be secured directly to the chassis body, and at least one heat dissipating feature configured to radiate heat generated from the at least one heat-generating component into outer space.
In an embodiment, an apparatus includes a first baseband section to receive a calibration signal; a first radio frequency (RF) section configured to generate a RF calibration signal based on modulating the calibration signal. The calibration signal comprises an orthogonal code based signal. The apparatus includes a second RF section to receive the RF calibration signal and generate a received calibration signal based on demodulating the RF calibration signal; a calibration section; a first antenna electrically coupled to the first RF section and configured to transmit the RF calibration signal; and a second antenna electrically coupled to the second RF section and configured to receive the RF calibration signal. The calibration section is configured to determine one or more of gain, baseband delay, or RF delay to calibrate the first RF section; and the second antenna is switchable between receiving the RF calibration signal and transmitting an encoded data signal.
H04B 17/11 - SurveillanceTests d’émetteurs pour l’étalonnage
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
H01Q 3/38 - 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 faisant varier la phase par des moyens électriques avec des déphaseurs variables les déphaseurs étant numériques
H01Q 3/42 - 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 faisant varier la phase par des moyens électriques utilisant un mélangeur de fréquences
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 1/38 - 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
H04B 17/12 - SurveillanceTests d’émetteurs pour l’étalonnage d’antennes d’émission, p. ex. de l’amplitude ou de la phase
In an embodiment, an apparatus includes one or more timing components configured to generate a reference time signal based on a timing signal and a reference clock signal. The apparatus includes phase lock loop (PLL) configured to generate a synchronized output clock signal based on the reference clock signal and the reference time signal.
H03L 7/07 - Commande automatique de fréquence ou de phaseSynchronisation utilisant un signal de référence qui est appliqué à une boucle verrouillée en fréquence ou en phase utilisant plusieurs boucles, p. ex. pour la génération d'un signal d'horloge redondant
H03L 7/197 - Synthèse de fréquence indirecte, c.-à-d. production d'une fréquence désirée parmi un certain nombre de fréquences prédéterminées en utilisant une boucle verrouillée en fréquence ou en phase en utilisant un diviseur de fréquence ou un compteur dans la boucle une différence de temps étant utilisée pour verrouiller la boucle, le compteur comptant entre des nombres variables dans le temps ou le diviseur de fréquence divisant par un facteur variable dans le temps, p. ex. pour obtenir une division de fréquence fractionnaire
Systems and Techniques are provided for a radio frequency input/output (RFIO) circuit. An example RFIO circuit can include an a receive (Rx) path comprising a low noise amplifier (LNA). The example RFIO circuit can include a transmit (Tx) path comprising a power amplifier (PA). The example RFIO circuit can include a balun configured to RF couple an RFIO terminal to the Rx path or to the Tx path. The one or more selection components are configured to selectively enable the Rx path or the Tx path.
H04B 1/3805 - 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 avec des récepteurs auxiliaires intégrés
H04B 1/10 - Dispositifs associés au récepteur pour limiter ou supprimer le bruit et les interférences
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
An apparatus includes a plurality of conductive structures having first sides and second sides opposite the first sides, wherein the second sides of the plurality of conductive structures are configured to be physically coupleable with a printed circuit board (PCB) of a receiver, a transmitter, or a transceiver. The first sides of the plurality of conductive structures are configured to be spaced from the PCB by a first distance when the plurality of conductive structures is physically coupled with the PCB. The apparatus includes an antenna having a first side and a second side opposite the first side. The second side of the antenna is disposed closer to the plurality of conductive structures than the first side of the antenna when the plurality of conductive structures is physically coupled with the PCB.
H01Q 1/38 - Forme structurale pour éléments rayonnants, p. ex. cône, spirale, parapluie formés par une couche conductrice sur un support isolant
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
09 - Appareils et instruments scientifiques et électriques
39 - Services de transport, emballage et entreposage; organisation de voyages
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Internet service provider (ISP) services; Satellite telecommunications services, namely, transmission of a wireless internet signal via satellites; Providing third party users with access to satellite telecommunications infrastructure; Telecommunication services, namely, transmission and delivery of digital data, light files, sound files, data, information and image signals, by means of computer and satellite networks; Collecting and transmitting real-time data and images obtained via satellites and space vehicles; Satellite communication and transmission services; Wireless broadband communication services; Transmission of data, voice and video via satellite; Interactive satellite communication services; Delivery of messages by electronic transmission; Providing telecommunications connections to the Internet; Telecommunications gateway services; Providing high-speed wireless internet access; Providing multiple-user access to the internet, global computer networks, and electronic communications networks; Providing access to global computer information networks; Telecommunications services, namely, transmission of voice, data, graphics, images, audio and video by means of telecommunications networks, wireless communication networks, and the Internet; Providing a website featuring information in the field of satellite telecommunications services; Providing a website featuring information in the field of providing internet access via satellite Global Positioning System using satellite constellations; Internet servers; Telecommunication hardware, namely, devices in the nature of satellite-based and Earth-based antenna systems that allow wireless connection to global communication networks and wireless connection of electronic devices to global communication networks, and accessories required for facilitating such wireless connection, namely, electric cables for the transmission of data, sounds and images, electric charging cables, electric wires and cables, power cables, telecommunication cables, ethernet adaptors, wireless and network routers, and carrying cases specially adapted for telecommunication equipment, namely, satellite receivers, satellite receiver modules, transmitters of electronic signals, multiplexers, decoding boxes, data processors, integrated circuits, electric cables for the transmission of data, sounds and images, electric charging cables, electric wires and cables, power cables, telecommunication cables, ethernet adaptors, and routers, excluding gaming apparatus; downloadable computer software for enabling wireless connection to global communication networks and wireless connection of electronic devices to global communication networks; Electronic global positioning and geo-location systems devices, namely, global positioning satellite-based receivers; all of the foregoing excluding the US government's global positioning systems; Equipment for receiving, processing, and transmitting voice, video, data and information via telecommunications and wireless signals, satellites, and computers, namely, satellite receivers, satellite receiver modules, transmitters of electronic signals, multiplexers, decoding boxes, data processors, integrated circuits, and accessories required for facilitating the transmission of such voice, video, data and information, namely, electric cables for the transmission of data, sounds and images, electric charging cables, electric wires and cables, power cables, telecommunication cables, ethernet adaptors, wireless and network routers, and carrying cases specially adapted for telecommunication equipment, namely, satellite receivers, satellite receiver modules, transmitters of electronic signals, multiplexers, decoding boxes, data processors, integrated circuits, electric cables for the transmission of data, sounds and images, electric charging cables, electric wires and cables, power cables, telecommunication cables, ethernet adaptors, and routers, excluding gaming apparatus; Computer operating hardware and downloadable and recorded computer operating software for use in the aforementioned goods, satellite terminals, and satellite earth stations Providing transportation and navigation information for use in the fields of meteorology, climatology, geography, topography, oceanography, and human and animal migration via telecommunications networks and satellite aided navigation devices; Providing transportation and navigation information via global positioning and geolocation wireless and satellite networks, excluding the US government's global positioning systems Providing a website featuring geographic mapping data and images obtained via satellites and space vehicles; cloud storage services for electronic data and files; Cloud computing services; Cloud computing featuring software for collecting, tracking, monitoring and analyzing data obtained via satellites and space vehicles in the fields of meteorology, climatology, geography, topography, oceanography, human and animal migration; Cloud computing featuring software for enabling and managing simultaneous, multiple modes of communication via satellites; Cloud computing featuring software for use in connection with data processing, data storage, data capture, data collection, data warehousing, data management, data mining, database analytics, and secure data sharing; Satellite telecommunications technology service to allow efficiencies of the carrier by creating efficient use of bandwidth on a satellite transponder; Design, development, and maintenance of telecommunications networks, software and apparatus in the field of satellite communications; Providing scientific research information in the fields of meteorology, climatology, geography, topography, oceanography, and human and animal migration via telecommunication networks and wireless navigation devices; Providing online computer mapping services; Research and development of technology in the field of satellite communications; Engineering services in the field of satellite communications; Scientific research; Scientific and technological services, namely, scientific research and analysis of data in the fields of meteorology, climatology, geography, topography, and oceanography; Electronic monitoring of environmental and atmospheric conditions using satellites and sensors; Remote sensing services, namely, aerial surveying through the use of satellites; Searching and retrieving information, sites, and other resources available on computer networks for others in relation to satellite data, recordings, and measurements; Providing scientific research information concerning satellite internet services via a global information network
09 - Appareils et instruments scientifiques et électriques
39 - Services de transport, emballage et entreposage; organisation de voyages
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Internet service provider (ISP) services; Satellite telecommunications services, namely, transmission of a wireless internet signal via satellites; Providing third party users with access to satellite telecommunications infrastructure; Telecommunication services, namely, transmission and delivery of digital data, light files, sound files, data, information and image signals, by means of computer and satellite networks; Collecting and transmitting real-time data and images obtained via satellites and space vehicles; Satellite communication and transmission services; Wireless broadband communication services; Transmission of data, voice and video via satellite; Interactive satellite communication services; Delivery of messages by electronic transmission; Providing telecommunications connections to the Internet; Telecommunications gateway services; Providing high-speed wireless internet access; Providing multiple-user access to the internet, global computer networks, and electronic communications networks; Providing access to global computer information networks; Telecommunications services, namely, transmission of voice, data, graphics, images, audio and video by means of telecommunications networks, wireless communication networks, and the Internet; Providing a website featuring information in the field of satellite telecommunications services; Providing a website featuring information in the field of providing internet access via satellite Global Positioning System using satellite constellations; Internet servers; Telecommunication hardware, namely, devices in the nature of satellite-based and Earth-based antenna systems that allow wireless connection to global communication networks and wireless connection of electronic devices to global communication networks, and accessories required for facilitating such wireless connection, namely, cables, travel cases, ethernet adaptors, and routers; downloadable and recorded computer software for enabling the transmission of information in the fields of meteorology, climatology, geography, topography, oceanography, and human and animal migration to telecommunications networks and navigation devices; downloadable computer software for enabling wireless connection to global communication networks and wireless connection of electronic devices to global communication networks; Electronic global positioning and geo-location systems devices, namely, global positioning satellite-based receivers; all of the foregoing excluding the US government's global positioning systems; Equipment for receiving, processing, and transmitting voice, video, data and information via telecommunications and wireless signals, satellites, and computers, namely, satellite receivers, satellite receiver modules, transmitters of electronic signals, multiplexers, decoding boxes, data processors, integrated circuits, and accessories required for facilitating the transmission of such voice, video, data and information, namely, cables, travel cases, ethernet adaptors, and routers; Computer operating hardware and downloadable and recorded computer operating software for use in the aforementioned goods, satellite terminals, and satellite earth stations Providing transportation and navigation information for use in the fields of meteorology, climatology, geography, topography, oceanography, and human and animal migration via telecommunications networks and satellite aided navigation devices; Providing transportation and navigation information via global positioning and geolocation wireless and satellite networks, excluding the US government's global positioning systems Providing a website featuring geographic mapping data and images obtained via satellites and space vehicles; cloud storage services for electronic data and files; Cloud computing services; Cloud computing featuring software for collecting, tracking, monitoring and analyzing data obtained via satellites and space vehicles in the fields of meteorology, climatology, geography, topography, oceanography, human and animal migration; Cloud computing featuring software for enabling and managing simultaneous, multiple modes of communication via satellites; Cloud computing featuring software for use in connection with data processing, data storage, data capture, data collection, data warehousing, data management, data mining, database analytics, and secure data sharing; Satellite telecommunications technology service to allow efficiencies of the carrier by creating efficient use of bandwidth on a satellite transponder; Design, development, and maintenance of telecommunications networks, software and apparatus in the field of satellite communications; Providing scientific research information in the fields of meteorology, climatology, geography, topography, oceanography, and human and animal migration via telecommunication networks and wireless navigation devices; Providing online computer mapping services; Research and development of technology in the field of satellite communications; Engineering services in the field of satellite communications; Scientific research; Scientific and technological services, namely, scientific research and analysis of data in the fields of meteorology, climatology, geography, topography, and oceanography; Electronic monitoring of environmental and atmospheric conditions using satellites and sensors; Remote sensing services, namely, aerial surveying through the use of satellites; Searching and retrieving information, sites, and other resources available on computer networks for others in relation to satellite data, recordings, and measurements; Providing scientific research information concerning satellite internet services via a global information network
89.
NEAR ZERO INTERMEDIATE FREQUENCY (NZIF) COMPENSATION OF LOCAL OSCILLATOR LEAKAGE
In an embodiment, a communications system includes a first transmitter electrically coupled to a first antenna of a phased array antenna, the first transmitter configured to receive an input signal, apply a first baseband frequency shift to the input signal to generate a first baseband frequency shifted input signal, generate a first modulated signal based on the first baseband frequency shifted input signal and transmit the first modulated signal by the first antenna. The communications system includes a second transmitter electrically coupled to a second antenna of the phased array antenna. The second transmitter configured to receive the input signal, apply a second baseband frequency shift, different from the first baseband frequency shift, to the input signal to generate a second baseband frequency shifted input signal, generate a second modulated signal based on the second baseband frequency shifted input signal, and transmit the second modulated signal by the second antenna.
H04B 17/11 - SurveillanceTests d’émetteurs pour l’étalonnage
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
H04B 17/12 - SurveillanceTests d’émetteurs pour l’étalonnage d’antennes d’émission, p. ex. de l’amplitude ou de la phase
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
H01Q 3/38 - 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 faisant varier la phase par des moyens électriques avec des déphaseurs variables les déphaseurs étant numériques
H01Q 3/42 - 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 faisant varier la phase par des moyens électriques utilisant un mélangeur de fréquences
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
90.
System and method of providing a medium access control scheduler
A method of operating an uplink scheduler as part of a medium access control scheduler on a satellite includes selecting, from a plurality of user terminals, a first number of zero-bandwidth request user terminals from the plurality of user terminals, selecting, from the plurality of user terminals, a second number of non-zero-bandwidth request user terminals from the plurality of user terminals, binning the second number of non-zero-bandwidth request user terminals into a plurality of bins based on a respective bandwidth requirement for each non-zero-bandwidth request user terminal and based on a minimum user terminal grant and allocating, according to a grant allocation algorithm, a respective grant of radio resources in an uplink frame to each user terminal of the plurality of user terminals into a respective bin of the plurality of bins in an order associated with increasing bandwidth needs. A downlink scheduler is also disclosed.
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]
H04W 72/1268 - Jumelage du trafic à la planification, p. ex. affectation planifiée ou multiplexage de flux de flux de données en liaison ascendante
H04W 72/23 - Canaux de commande ou signalisation pour la gestion des ressources dans le sens descendant de la liaison sans fil, c.-à-d. en direction du terminal
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
91.
Spacecraft stack assembly configured for stacking, securing, and releasing spacecraft
A system for securing spacecraft to a rocket and deploying the spacecraft into orbit includes a stack having a plurality of spacecraft arranged in layers, with each spacecraft being releasably mated with at least one spacecraft in an adjacent layer, and at least one hold down and deploy assembly configured to, in a first configuration, secure the layers of the stack together and secure the entire stack to the rocket, and, in a second configuration, release the entire stack from the rocket into orbit such that the layers passively separate.
A method for downlink link adaptation includes receiving, from a satellite and at a user terminal, a first data packet data unit according to a first downlink modulation and coding scheme (MCS), computing an error vector magnitude data associated with the first data packet data unit, generating, based on one or more of the error vector magnitude data, user terminal signal-to-noise-ratio feedback based on a constant times a previous user terminal signal-to-noise-ratio and a current user terminal signal-to-noise-ratio, and transmitting an uplink packet data unit having a downlink block error rate and the user terminal signal-to-noise-ratio feedback. A satellite runs a link adaptation algorithm based on the user terminal signal-to-noise-ratio feedback and block error rate to generate a second downlink MCS. The method includes receiving at the user terminal a second data packet data unit according to the second downlink MCS for the user terminal. An uplink link adaptation algorithm is also disclosed.
H04W 72/10 - Affectation de ressources sans fil sur la base de critères de priorité
H04W 72/54 - Critères d’affectation ou de planification des ressources sans fil sur la base de critères de qualité
H04B 17/382 - SurveillanceTests de canaux de propagation pour l’attribution de ressources, le contrôle d’accès ou le transfert
H04B 17/336 - Rapport signal/interférence ou rapport porteuse/interférence
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
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
93.
Digital pre-distortion compensation in a wireless communications system
A wireless communications system includes a pre-distortion actuator configured to receive a carrier-modulated signal and convert the carrier-modulated signal into an output signal, the pre-distortion actuator comprising a behavioral model that models a transmit chain of the system including at least one amplifier and at least one antenna and predict an input-output relationship of the transmit chain of the system between an input to the transmit chain to an output of the transmit chain. The system includes a phased antenna array configured to transmit the output signal. The phased antenna array includes a plurality of antenna elements, each antenna element electrically coupled to a respective power amplifier. The pre-distortion actuator is configured to generate the output signal by applying a correction to the carrier-modulated input signal that cancels out nonlinearities The behavioral model is updated based on feedback from a receiver from a previous output signal transmitted to the receiver.
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Research and development of technology in the field of satellite communications; engineering services in the field of satellite communications; scientific research in the fields of astronomy, meteorology, climatology, geography, topography, and oceanography; scientific and technological services, namely, scientific research and analysis of data in the fields of meteorology, climatology, geography, topography, and oceanography; electronic monitoring of environmental and atmospheric conditions using satellites and sensors; remote sensing services, namely, aerial surveying through the use of satellites; searching and retrieving information, sites, and other resources available on computer networks for others in relation to satellite data, recordings, and measurements
In an embodiment, a user terminal includes a connection manager component configured to generate an initial network entry request; an antenna assembly communicatively coupled to the connection manager and configured, in response to the initial network entry request, to find a satellite based on a search of a sky, wherein the satellite comprises a satellite assigned to downlink to a geographic cell associated with the user terminal; and a media access control (MAC) layer component communicatively coupled to the connection manager, the MAC layer component configured to generate an uplink radio frame including a random access channel (RACH) request associated with the initial network entry request at a particular portion of the uplink radio frame for the satellite, wherein the particular portion is selected by the MAC layer component from among a plurality of portions of the uplink radio frame.
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
H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
96.
Systems and methods for beamforming in hybrid beamforming antennas
Systems, methods, and computer-readable media are provided for hybrid beamforming. An example method can include determining a plurality of digital beamforming weights associated with a plurality of digital beamforming paths between digital beamformers and groups of analog beamforming circuits in a phased array antenna, each digital beamforming path being coupled to a group of analog beamforming circuits and each analog beamforming circuit being coupled to a respective set of antenna elements of the phased array antenna, and determining analog beamforming weights associated with the groups of analog beamforming circuits. The analog beamforming weights are estimated to put analog beamforming paths associated with the groups of analog beamforming circuits in a desired phase and gain relationship with each other. The method can include varying, based at least partly on the analog beamforming weights, a signal phase shift across the analog beamforming paths associated with the groups of analog beamforming circuits.
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 17/11 - SurveillanceTests d’émetteurs pour l’étalonnage
Systems, methods, and non-transitory media are provided for low latency handovers. An example method can include receiving, by a user terminal associated with a cell served by a satellite, a schedule of communications between the user terminal and one or more satellites; requesting, based on the schedule, a handover from a beam of the satellite to a different beam of one of the satellite or a different satellite; processing packets transmitted over the beam of the satellite and/or the different beam of the one of the satellite or the different satellite; performing the handover from the beam of the satellite to the different beam of the one of the satellite or the different satellite; and after the handover, transmitting, by the user terminal, one or more packets via the different beam of the one of the satellite or the different satellite.
H04W 36/06 - Resélection d'une ressource de communication au point d'accès serveur
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
In one embodiment of the present disclosure, a satellite communication system includes a satellite constellation including a plurality of satellites in non-geosynchronous orbit (non-GEO), wherein at least some of the plurality of satellites travel in a first orbital path at a first inclination, and an end point terminal having an earth-based geographic location, the end point terminal having an antenna system defining a field of regard for communicating with the satellite constellation, wherein the field of regard is a limited field of regard, wherein the field of regard is tilted from a non-tilted position to a tilted position, and wherein the tilt angle of the tilted position is a function of the latitude of the geographic location.
