Patents Assigned to Viasat, Inc.
  • Patent number: 11916990
    Abstract: Methods, apparatuses, and systems are provided for improving utilization of the satellite communications system through various “deltacasting” techniques for handling content sets (e.g., feeds or websites). Embodiments operate in a client-server context, including a server optimizer, a client optimizer, and, in some embodiments, a pre-positioning client. Within this client-server context, content sets are multicast (e.g., anticipatorily pre-positioned in a local dictionary) to end users of the communications system and are handled at the content set level, according to set-level metadata and/or user preferences. In some embodiments, when locally stored information from the content sets is requested by a user, deltacasting techniques are used to generate fingerprints for use in identifying and exploit multicasting and/or other opportunities for increased utilization of links of the communications system.
    Type: Grant
    Filed: January 14, 2022
    Date of Patent: February 27, 2024
    Assignee: VIASAT, INC.
    Inventors: William B. Sebastian, Peter Lepeska
  • Patent number: 11916631
    Abstract: A multi-beam phased array antenna system includes a beamformer responsive to control signals to convert between a plurality of subarray signals and a plurality of beam signals. The system also includes a plurality of subarrays to communicate a plurality of beams corresponding to the plurality of beam signals. Each subarray includes a plurality of radiating elements. Each subarray also includes subarray beamforming circuitry responsive to respective beam weights to adjust RF signals communicated with the radiating elements, and convert between the adjusted RF signals and one respective subarray signal. The system further includes a controller that determines two or more beams, wherein the two or more beams are the same communication type. The beamformer assigns disjoint subsets of subarrays to each of the determined two or more beams. The controller also provides the beam weights for each of the plurality of subarrays and provides the control signals to the beamformer.
    Type: Grant
    Filed: January 8, 2021
    Date of Patent: February 27, 2024
    Assignee: Viasat, Inc.
    Inventors: Maria Vigano, Nicholas Hedberg
  • Patent number: 11908323
    Abstract: An apparatus for monitoring a network communication system onboard a vehicle comprises a network interface and control circuitry. The control circuitry is configured to obtain location data indicating geographic locations of a plurality of vehicles within a geographic area, generate a first interface comprising a first portion and a second portion, and generate first graphical interface data within the first portion of the first interface. The first graphical interface data represents a map of the geographic area and a plurality of vehicle icons. Each of the plurality of vehicle icons is selectable via user input and at a position on the map corresponding to a respective geographic location of one of the plurality of vehicles. The control circuitry is further configured to generate second graphical interface data within the second portion of the first interface. The second graphical interface data represents vehicle identifiers for the plurality of vehicles.
    Type: Grant
    Filed: September 19, 2022
    Date of Patent: February 20, 2024
    Assignee: VIASAT, INC.
    Inventor: Richard G Walsh
  • Patent number: 11909508
    Abstract: Systems and methods for supporting more flexible coverage areas and spatial capacity assignments using satellite communications systems are disclosed. A hub-spoke, bent-pipe satellite communications system includes: terminals; gateways; a controller for specifying data for controlling satellite operations in accordance with a frame definition including timeslots for a frame and defining an allocation of capacity between forward and return traffic; and a satellite including: pathways; at least one LNA, an output of which is for coupling to a pathway and to amplify uplink beam signals in accordance with the allocation; and at least one HPA, an input of which is for coupling to the pathway and to amplify downlink beam signals in accordance with the allocation, and wherein the frame definition specifies at least one pathway as a forward pathway for at least one timeslot and as a return pathway for at least one other timeslot in the frame.
    Type: Grant
    Filed: January 10, 2023
    Date of Patent: February 20, 2024
    Assignee: Viasat, Inc.
    Inventors: Mark J. Miller, Charles N. Pateros
  • Patent number: 11909468
    Abstract: A method for pointing an antenna can include positioning, by a positioner, a beam of an antenna mounted on a vehicle to an initial angular position towards a target satellite based on an initial pointing direction for the antenna, the initial pointing direction being defined in a fixed reference plane and communicating, from the antenna, a signal with the target satellite, wherein the positioner controls an orientation of a pedestal of the antenna. The method also includes, executing, by an antenna control unit (ACU), an offset compensation operation of the antenna. The offset correction operation can include adjusting a pointing direction of the antenna to a plurality of angular positions and selecting a scan offset angle based on measured signal metrics for the plurality of angular positions. The method can include calculating a yaw compensation of the antenna based on the initial pointing direction and on a yaw pointing direction.
    Type: Grant
    Filed: November 9, 2020
    Date of Patent: February 20, 2024
    Assignee: Viasat, Inc.
    Inventor: Douglas J. Merrell
  • Patent number: 11899819
    Abstract: Embodiments seek to protect privacy of potentially sensitive client resources in web transactions using crowd-disambiguation. Crowd-disambiguation machines can aggregate information about resources from multiple clients as resource fingerprints, and can use the fingerprints to provide crowd-sourced services in a privacy-protected manner. For example, embodiments can communicate a resource fingerprint as a fully ambiguated resource instance (FARI) and a partially disambiguated resource instance (PDRI). When one (or few) clients communicates the resource fingerprint, the identity of the resource remains obfuscated from the crowd-disambiguation machine. As more clients communicate fingerprints for the same resource (e.g., identified by the matching FARIs), respective, differently generated PDRIs of those fingerprints enable the crowd-disambiguation machine to resolve further portions of the resource, ultimately permitting the resource to be revealed and considered non-private (e.g.
    Type: Grant
    Filed: September 28, 2021
    Date of Patent: February 13, 2024
    Assignee: Viasat, Inc.
    Inventors: David F Lerner, Peter J Lepeska, Douglas C Larrick, Devin R Toth
  • Publication number: 20240048959
    Abstract: Described herein are systems and methods that dynamically manage network traffic for individual subscribers based on past and current data usage rates. The disclosed systems and methods operate to control data traffic for a group of subscribers that share a common access network or that share a common access link to an access network. Prior to an individual subscriber reaching their data plan limit, the disclosed systems and methods track individual subscribers' past and current data rates and manage individual subscribers' current usage rates so that each subscriber's continually or periodically updating past usage rate stays within a provisioning rate for the group. This can improve user experience because rather than waiting until a subscriber has reached their plan data limit to impose strict data usage restrictions, the disclosed systems and methods use modest restrictions continuously or intermittently during the plan period.
    Type: Application
    Filed: June 8, 2023
    Publication date: February 8, 2024
    Applicant: VIASAT, INC.
    Inventors: James N. ESSERMAN, Daniel M. NEWMAN, Girish CHANDRAN, Mark D. DANKBERG, Jae Won CHUNG
  • Publication number: 20240021984
    Abstract: Methods of antenna pointing and antenna assemblies implementing those methods are disclosed. An example method includes providing a user terminal antenna assembly including an antenna and an auto-peak device. The antenna includes a reflector, a subreflector, and a feed, the feed oriented relative to the reflector and the subreflector to produce a beam. The antenna further includes a tilt assembly to tilt the subreflector relative to the reflector and the feed. The method further includes providing a control signal to tilt the subreflector in a plurality of tilt positions to move the beam while measuring corresponding signal strength of a signal communicated via the antenna at each of the plurality of tilt positions. Additionally, the method includes selecting a tilt position from the plurality of tilt positions based on a measured signal strength, and providing the control signal to tilt the subreflector to the selected tilt position.
    Type: Application
    Filed: April 13, 2023
    Publication date: January 18, 2024
    Applicant: Viasat, Inc.
    Inventor: Luis Costa
  • Patent number: 11876280
    Abstract: An AMC antenna apparatus includes a ground plane and a flexible antenna element layer above the ground plane. The ground plane includes a conductive base surface, a plurality of flexible conductors, and a frequency selective surface (FSS) layer above the base surface, where the FSS layer includes a plurality of conductive patches separated from one another. Each of the flexible conductors electrically connects one of the conductive patches to the base surface. A latch mechanism is arranged between the base layer and the FSS layer. An inflatable bladder system between the base layer and the FSS layer is configured to receive a gas input during deployment of the antenna apparatus and inflate to produce force sufficient to cause the latch mechanism to transition from an unlatched state to a latched state in which the conductive base surface is fixedly separated from the FSS layer at a predetermined distance.
    Type: Grant
    Filed: October 14, 2021
    Date of Patent: January 16, 2024
    Assignee: VIASAT, INC.
    Inventors: David C. Wittwer, David D. Greenidge, Michael T. Kretsch, Kevin D. House, Mark D. Vossler
  • Publication number: 20240014570
    Abstract: A reflector antenna heating system (212) includes a dielectric radome (250) that covers a first side of a reflector (216) and a feed subsystem (218) of an antenna (200). The system also includes a plurality of heater blower devices (254) on a second side of the reflector (216), each of the plurality of heater blower devices (254) having an inlet port (259) and an outlet port (260). The system further includes a plurality of outlet duct assemblies (256), wherein each of the plurality of outlet duct assemblies (256) is coupled to the outlet port (260) of a respective heater blower device (254) to direct heated air around a perimeter of the reflector (216) and along an inside surface of the dielectric radome (250). One or more gaps (267) proximal to a center of the reflector (216) are included to recirculate cooled air toward a plurality of inlet ducts (262) for the plurality of heater blower devices (254) to feed the inlet port (259) of each heater blower device.
    Type: Application
    Filed: September 13, 2021
    Publication date: January 11, 2024
    Applicant: Viasat, Inc.
    Inventor: Kurt A. Zimmerman
  • Patent number: 11870836
    Abstract: In anticipation of a client device establishing a connection over a network with a remote host service, a pre-connect module generates a connection request (referred to herein as a “pre-connect request”) on behalf of the client device and sends the pre-connect request to the remote host server. The remote server responds with a connection response (referred to herein as a “pre-connect response”), which is pre-positioned on the client-side of the network along with information for generating a later connection request that is in material respects the same as the pre-connect request. Then, when the client device later seeks to establish a connection with the remote host server, the client device determines whether it has in local storage generation information for generating a connection request to the remote host server. If so, the client device uses the generation information to generate a connection request that is in material respects the same as the pre-connect request.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: January 9, 2024
    Assignee: VIASAT, INC.
    Inventors: Peter J Lepeska, Demetrios J Tsillas
  • Patent number: 11871315
    Abstract: Systems and methods for mobile connectivity provisioning at an access network are described. The access network has a service connection to a service center that is external to the access network. The method includes receiving, from a mobile vehicle, an indication of a connection request for a device on the mobile vehicle. The connection request identifies the device using a media access control (MAC) address. The method includes generating a globally unique identifier (GUID) associated with the MAC address and transmitting a first message comprising the GUID to a network access terminal on the vehicle. The network access terminal redirects the connection request to the service center via a traffic connection. The redirected connection request includes the GUID. The access network receives an indication of a network service for the device from the service center; the indication identifies the device based on the GUID.
    Type: Grant
    Filed: December 27, 2022
    Date of Patent: January 9, 2024
    Assignee: Viasat, Inc.
    Inventors: Roger Prenger, Joshua Righetti, Anton Hoffman, Sandeep Moorthy, William Moseley, Stephen O′Neal, James Esserman
  • Patent number: 11863289
    Abstract: A satellite communication system in which a plurality of satellites each transit about the Earth in a common mid-Earth orbit. The orbit may be configured such that each satellite of the plurality of satellites follows a common, repeating ground track relative to the surface of the Earth. In turn, one or more repeating sky tracks may be defined relative to at least one ground station such that the ground station is in continuous communication with at least one of the plurality of satellites. In an example, a ground station may have visibility to a plurality of repeating sky tracks such that a plurality of discreet communication channels is provided that use different satellites for communication with user terminals of the satellite communications system.
    Type: Grant
    Filed: March 3, 2021
    Date of Patent: January 2, 2024
    Assignee: VIASAT, INC.
    Inventor: Aaron Mendelsohn
  • Patent number: 11855667
    Abstract: Methods and devices for radio frequency (RF) loopback for transceivers are described. A transceiver for communicating RF signals with a target device may transmit signals at a transmit frequency and receive signals at a (different) receive frequency. The transceiver may include a waveguide diplexer for separating and combining signals based on frequency. The transceiver may be configured to couple a loopback signal from a common port of the waveguide diplexer; the loopback signal may be based on a transmit signal. The transceiver may include a loopback translator to translate the loopback signal from the transmit frequency to the receive frequency and provide the translated loopback signal to a receiver used for receiving signals from the target device. The receiver may compare the translated loopback signal with a representation of the transmit signal to generate a compensation signal. A transmitter may use the compensation signal to adjust subsequent transmit signals.
    Type: Grant
    Filed: January 5, 2022
    Date of Patent: December 26, 2023
    Assignee: Viasat, Inc.
    Inventors: Kenneth V. Buer, Ramanamurthy V. Darapu, Martin Gimersky, David E. Pettit, Bill T. Agar
  • Patent number: 11855751
    Abstract: Methods and systems for calibrating the return and forward links of a satellite communication system are provided according to embodiments of the invention. The phase and/or amplitude variations caused by the return and forward links are calculated and/or estimated to aid in beamforming, such as ground-based beamforming. Calibration earth stations, distributed within one or more beam patterns, may be used to transmit calibration codes to the gateway to calibrate the return link. Return links variations may be estimated using a weighted minimum mean square algorithm at the gateway. Forward links may be calibrated with calibration codes transmitted from the gateway through a hybrid matrix to at least one calibration station. Forward calibration links may also calibrate for temperature-dependent signal variations such as diplexer variations at the satellite.
    Type: Grant
    Filed: August 18, 2022
    Date of Patent: December 26, 2023
    Assignee: Viasat, Inc.
    Inventor: Soheil Sayegh
  • Publication number: 20230412511
    Abstract: Disclosed are systems and methods for steering network traffic over different access networks based on a classification of the network traffic. A first access network provides a first network path between a client device and a destination network and a second access network provides a second network path between the client device and the destination network. The access networks have different characteristics, such as latency or available bandwidth. A traffic classifier receives network messages and assigns classifications to the received network messages. A policy enforcer determines routes for individual network messages. The determined route is based at least in part on the classification assigned by the traffic classifier.
    Type: Application
    Filed: June 16, 2023
    Publication date: December 21, 2023
    Applicant: VIASAT, INC.
    Inventor: GIRISH CHANDRAN
  • Patent number: 11843448
    Abstract: Methods and systems are described for providing end-to-end beamforming. For example, end-to-end beamforming systems include end-to-end relays and ground networks to provide communications to user terminals located in user beam coverage areas. The ground segment can include geographically distributed access nodes and a central processing system. Return uplink signals, transmitted from the user terminals, have multipath induced by a plurality of receive/transmit signal paths in the end to end relay and are relayed to the ground network. The ground network, using beamformers, recovers user data streams transmitted by the user terminals from return downlink signals. The ground network, using beamformers generates forward uplink signals from appropriately weighted combinations of user data streams that, after relay by the end-end-end relay, produce forward downlink signals that combine to form user beams.
    Type: Grant
    Filed: July 14, 2021
    Date of Patent: December 12, 2023
    Assignee: ViaSat, Inc.
    Inventors: Kenneth V. Buer, Mark J. Miller
  • Patent number: 11831077
    Abstract: The phased array antenna system is described. The phased array antenna system formed on one or more layers of a printed circuit board (PCB). The phased array antenna system be may include a beam forming network to convert between one or more element signals and a beam signal. The phased array antenna system may include one or more control circuits, where each control circuit may receive the element signals for corresponding antenna element. Each of the control circuits may further may establish a control signal path and an element signal path between the antenna elements and the beamforming network, where the signal path may carry multiplexed element and control signals. The control circuits may include a signal adjustment circuit that may adjust the corresponding element signal (e.g., in phase or amplitude) based on the control signal.
    Type: Grant
    Filed: January 18, 2023
    Date of Patent: November 28, 2023
    Assignee: Viasat, Inc.
    Inventors: Kenneth V. Buer, Ronald S. Lipton, Ashitkumar J. Tripathi
  • Patent number: 11831373
    Abstract: Methods, systems, and devices for channelizing and beamforming a wideband waveform are described. Generally, the described techniques provide for transmitting and receiving wideband waveforms that are beamformed on a per-channel basis during generation of the wideband waveforms. A transmitter may separate a first wideband signal into segments, with each segment bandwidth corresponding to a channel of the system bandwidth, and may map the segments to channels. The segments may be replicated to generate multiple copies of each segment. The transmitter may beamform and combine the copies of the segments to generate multiple wideband waveforms, and transmit each wideband waveform using a different antenna. A receiver may receive multiple wideband waveforms using multiple antennas and may separate each wideband waveform into segments, then beamform and de-map the segments. The techniques may be used to transmit and receive beamformed wideband waveforms over tactical data links.
    Type: Grant
    Filed: July 2, 2021
    Date of Patent: November 28, 2023
    Assignee: ViaSat, Inc.
    Inventors: Michael T. Kretsch, David C. Jacobs, David J. Trusheim, Robert T. Short
  • Patent number: 11824743
    Abstract: A data transmission system for a mobile platform comprises non-volatile data storage media, a network interface, and control circuitry. The control circuitry is configured to establish a first connection with one or more onboard passenger service devices providing a passenger service at the mobile platform using the network interface. The control circuitry is further configured to receive a set of system log data from the one or more onboard passenger service devices via the network interface and store one or more log signatures in the non-volatile data storage media. The control circuitry is further configured to detect faults fault related to onboard passenger service devices, store transmission rule data that includes rules for filtering system log data, filter the set of system log data based on the transmission rule data, and transmit a subset of system log data to the remote computing device via the network interface.
    Type: Grant
    Filed: October 4, 2022
    Date of Patent: November 21, 2023
    Assignee: Viasat, Inc.
    Inventor: Stuart H. Floyd