Patents Assigned to Hughes Networks Systems
  • Patent number: 10819479
    Abstract: A User Equipment and method for transmitting a random-access radio frequency (RF) signal by applying Asynchronous Coded Multiple Access (ACMA) in a communication system employing Orthogonal Frequency Division Multiplexing (OFDM) is described. The method including: encoding an information stream as OFDM symbols using a low rate Forward Error Correction (FEC) coding suitable for Successive Interference Cancellation (SIC) to form a payload; generating a burst, including symbols, by performing an inverse fast Fourier transform on a unique word (UW) multiplexed with the payload; and synchronizing a transmission of each of the symbols of the burst with consecutive symbol-start instants. The UW includes a plurality of Zadoff-Chu (ZC) like sequences disposed in a subset of consecutive symbol-start instants of the burst. A receiver detects burst arrival by searching for consecutive ZC-like sequences. Channel state estimation can be performed by using the UW with additional ZC-like sequences in the burst.
    Type: Grant
    Filed: March 1, 2019
    Date of Patent: October 27, 2020
    Assignee: Hughes Network Systems, LLC
    Inventor: Neal David Becker
  • Patent number: 10812389
    Abstract: A terminal device in a first network includes a processor programmed to receive first data indicating a respective first loading of each of a plurality of first level access devices. The processor is further programmed to select a first level access device based at least in part on the first data; and communicate with a second network via the selected first level access device and a selected second level access device. Each of the first level access devices is switchable to communicate with the first terminal via at least a respective one of one or more shared access channels, and each of a plurality second level access devices is switchable to communicatively couple one or more of the plurality of first level access devices with a second network.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: October 20, 2020
    Assignee: Hughes Network Systems, LLC
    Inventors: Jun Xu, Robert Torres, John Border, Nagesh Javali
  • Patent number: 10813078
    Abstract: A base station computer that includes a processor and memory storing instructions executable by the processor is described. The processor may be programmed to: determine a geographic position of a user terminal (UT); store the position in the memory; determine to page the UT; correlate a satellite beam based on the position; and page the UT via the satellite beam.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: October 20, 2020
    Assignee: Hughes Network Systems, LLC
    Inventors: Channasandra Ravishankar, Deepak Arur, Gaguk Zakaria
  • Patent number: 10812250
    Abstract: Interference cancellation in a receiver can be used to improve bandwidth efficiency. The transmission of bursts from different terminals scheduled at separate time intervals can overlap partially such that time used for information transmission is optimized. For example, a receiver includes a signal processor including instructions executable to select first data including a first burst and a successive second burst from a transmission. The signal processor demodulates and decodes information from the first burst. The signal processor further generates a remodulated first burst based on recoded and remodulated information and generates second data by subtracting the remodulated first burst from the first data. The signal processor synchronizes with a stored symbol pattern in the second burst; and demodulates and decodes the information from the second burst. With such arrangement, the performance of each link is not affected by the partially overlapping burst.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: October 20, 2020
    Assignee: Hughes Network Systems, LLC
    Inventors: Lin-Nan Lee, Liping Chen
  • Patent number: 10805850
    Abstract: A system and a method for directing a handover of communications in Radio Frequency (RF) networks at a UT. The method includes servicing a user terminal (UT) via a first network having a first coverage area; receiving, from the UT via the first network, a measurement report for a second network having a second coverage area based on a measurement configuration of the second network; sending, to the UT via the first network, a handover order for obtaining service from the second network; and establishing, via a second network RAN (radio access network), a service for the UT via the second network per the handover order. In the method, the first network may include either a terrestrial network (TN) or a non-terrestrial network (NTN), the second network may include other of the TN or the NTN, and the TN and the NTN are RF networks.
    Type: Grant
    Filed: December 30, 2019
    Date of Patent: October 13, 2020
    Assignee: Hughes Network Systems, LLC
    Inventors: Nassir Benammar, Channasandra Ravishankar, Gaguk Zakaria
  • Patent number: 10805138
    Abstract: Systems and methods are disclosed and include a method that includes adding a training symbol prefix to an OFDM symbol frame, the prefix including a plurality of training symbols, each including N sub-symbol fields. N/2 of the sub-symbol fields are zero valued, and N/2 of the sub-symbol fields carry corresponding symbols of a N/2 sub-symbol pseudo random training symbol. A first half of the pseudo random training symbol is symmetrical to a second half of the pseudo random training symbol. An OFDM N-sub-carrier transmission carries the prefix as signal power on a first N/2 of its N sub-carriers and suppresses signal power on a second N/2 of the sub-carriers. The first N/2 and second N/2 sub-carriers alternate in the frequency domain.
    Type: Grant
    Filed: March 3, 2020
    Date of Patent: October 13, 2020
    Assignee: Hughes Network Systems, LLC
    Inventors: Donglei Fan, Bassel Beidas
  • Publication number: 20200322056
    Abstract: Techniques for data transmission include a geostationary earth orbiting satellite that includes a first optical communication system configured to receive forward-direction user data via a forward optical link between the satellite and a stratospheric high-altitude communication device, and a first radio frequency (RF) communication system configured to transmit, via a plurality of RF spot beams, the forward-direction user data. The stratospheric high-altitude communication device includes a second RF communication system configured to receive the forward-direction user data via a plurality of concurrent forward RF feeder links, and a second optical communication system configured to transmit to the satellite, via the forward optical link, the forward-direction user data received via the plurality of forward RF feeder links.
    Type: Application
    Filed: June 23, 2020
    Publication date: October 8, 2020
    Applicant: Hughes Network Systems, LLC
    Inventors: Stanley Edward Kay, Neal David Becker, Lin-Nan Lee
  • Publication number: 20200322409
    Abstract: A system to provide second generation (2G) voice services over internet protocol, the system including: a voice gateway (VGW) including a 2G stack to communicate control plane information and user plane information with a 2G user terminal (UT) via a circuit-switched network without modifications to the 2G-UT, an Iu-CS IP stack, and a relay to map the control plane information between the 2G stack and the Iu-CS IP stack, and vice-versa; a mobile switching center (MSC), connected to the VGW via the Iu-CS IP stack, to manage and establish the voice services between the 2G-UT and a public switched telephone network (PSTN) based on the mapped control plane information; and a media gateway (MGW) connected to the VGW via the Iu-CS IP stack, where the MGW communicates the user plane information between the 2G-UT and the PSTN after the MSC 2-G UT vocoder, e.g. AMBE, has established voice services.
    Type: Application
    Filed: November 25, 2019
    Publication date: October 8, 2020
    Applicant: Hughes Network Systems, LLC
    Inventors: Channasandra RAVISHANKAR, Gaguk ZAKARIA
  • Patent number: 10791658
    Abstract: A system includes a shield for a low noise amplifier. The shield includes a top and one or more walls extending from the top defining a cavity. The shield further comprises at least one conducting member extending outwardly from the top and within the cavity. The shield may enclose an amplifier circuit and improve its signal-to-noise ratio.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: September 29, 2020
    Assignee: Hughes Network Systems, LLC
    Inventors: Yu Yung, Rajesh Joshi
  • Patent number: 10791162
    Abstract: Application layer throughput (ALT) shaping is provided for a streaming media session is provided. A request for a content segment is received. The receipt time of the request is recorded and the request is forwarded to a content server. A response message is received from the server. The receipt time of the response and a segment size is determined. An ALT for the current segment is determined based on the receipt times of the request and response messages and the segment size. The ALT rate is compared to a target ALT rate required for a desired session PBR. When the ALT rate is higher than the target ALT rate, the content response is held for a time period determined to lower the current ALT rate to the target ALT rate, and then released to the client device. Otherwise, the content response is promptly provided to the client device.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: September 29, 2020
    Assignee: Hughes Network Systems, LLC
    Inventors: Chi-Jiun Su, Kaustubh Jain, Se Gi Hong
  • Patent number: 10763993
    Abstract: Methods and apparatus for increasing spectral efficiency in non-orthogonal multiple access (NOMA) communication, that implement receiving a signal stream from a user, splitting the signal stream into a plurality of sub-streams, applying a forward error coding (FEC) to each one of the sub-streams, and outputting a corresponding plurality of FEC encoded sub-streams. This can include modulating a corresponding carrier with each of the FEC encoded sub-streams, and combining and transmitting the corresponding plurality of modulated carrier signals. The modulated carrier signals can each carry a respective one of the FEC encoded sub-streams.
    Type: Grant
    Filed: June 18, 2018
    Date of Patent: September 1, 2020
    Assignee: Hughes Network Systems, LLC
    Inventors: Mustafa Eroz, Lin-Nan Lee
  • Patent number: 10763954
    Abstract: Various arrangements are presented for optimizing data transmission between a satellite and a user equipment. A satellite gateway system may receive a message from the user equipment indicative of a current location of the user equipment. Data may be retrieved from the Internet to be transmitted to the user equipment via the satellite. The satellite gateway system may transmit a downlink message to the satellite that comprises the retrieved data and beam steering data. The beam steering data may instruct the satellite to target a downlink spot beam on the current location of the user equipment based on the message received from the user equipment. The retrieved data may be transmitted to the user equipment via the targeted downlink spot beam.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: September 1, 2020
    Assignee: Hughes Network Systems, LLC
    Inventor: T. Paul Gaske
  • Publication number: 20200274524
    Abstract: Systems and methods are provided for channelizing. A first stage can provide a WOLA filter bank that can apply a single multiplier resource to perform window weighting for multiple WOLA filter banks. The first stage can remove mixer-based post FFT adjustment and provide equal functionality with a particular modification of tuning mixers at inputs of second stage FIR paths. The first stage can include a variable decimation, using a particular implementation of variable sample block size.
    Type: Application
    Filed: February 24, 2019
    Publication date: August 27, 2020
    Applicant: Hughes Network Systems, LLC
    Inventor: Hanhui Zhang
  • Patent number: 10742312
    Abstract: A system includes a terminal. The terminal includes a terrestrial communication interface, a satellite communication interface and a computer. The terrestrial and satellite communication interfaces are configured to communicate traffic data. The computer is communicatively linked to the terrestrial and satellite communication interfaces. The computer executes instructions comprising, to determine that the traffic data, communicated via the terrestrial communication interface, exceeds a threshold, and based on the determination, to route at least a portion of traffic data via the satellite communication interface in accordance with a predetermined traffic data load-balancing scheme.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: August 11, 2020
    Assignee: Hughes Network Systems, LLC
    Inventors: Satyajit Roy, Channasandra Ravishankar
  • Patent number: 10740656
    Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for training and using machine learning clustering models to determine conditions a satellite communication system. In some implementations, feature vectors for a time period are obtained. Each feature vector includes feature values that represent properties of a satellite communication system at a respective time during the time period. Each feature vector is provided as input to a machine learning model that assigns the feature vector to a based on the properties of the satellite communication system represented by the feature vector. Each cluster corresponds to a respective potential operating condition of the satellite communication system.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: August 11, 2020
    Assignee: Hughes Network Systems, LLC
    Inventors: Amit Arora, Archana Gharpuray, John Kenyon
  • Patent number: 10739464
    Abstract: A satellite modem, a GPS device, and a method are provided. The satellite modem requests current location information from a GPS device and waits no more than a preconfigured amount of time to receive the current location information. When the satellite modem receives the current location information, the satellite modem determines whether the current location information indicates a location in which the satellite modem is authorized to operate. When the satellite modem determines that the current location information indicates a location in which the satellite modem is not authorized to operate, the satellite modem performs at least one action from a group of actions including preventing the satellite modem from operating normally, permitting the satellite modem to operate with a reduced functionality, and transmitting a message to a network management center indicating that the satellite modem is not located at an authorized location.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: August 11, 2020
    Assignee: Hughes Network Systems, LLC
    Inventors: Emanuel Girard Harrington, Dillon James Nichols, Yong Kang Yuan
  • Publication number: 20200252938
    Abstract: A shared bandwidth network system to communicate network traffic between terminals and an external network is disclosed. The system includes: a point of presence (POP) for the external network; Radio Frequency Gateways (RFGWs) wherein each RFGW of the RFGWs provides one or more Radio Frequency (RF) paths, and each of the RF paths links a respective RFGW of the RFGWs with one or more terminals of the terminals; an RF path state manager to manage a RF path state for each of the RF paths; a Satellite Network Core (SNC); a Software Defined Network (SDN) controller to maintain a topology based on the RF path states, wherein the topology includes the POP, the RFGWs and the SNC; and a network layer to route network traffic between the POP, the RFGWs and the SNC based on the topology.
    Type: Application
    Filed: April 23, 2020
    Publication date: August 6, 2020
    Applicant: Hughes Network Systems
    Inventors: Rob TORRES, David WHITEFIELD, Jayant RAMAKRISHNAN
  • Patent number: 10735087
    Abstract: A computer comprises a processor programmed to identify a plurality of sets of channels. Each set of channels includes first, second and third channels. The first and second channels in each set include uplinks respectively in first and second neighbor beams and have a first bandwidth overlap. The first and third channels in each set share a target and a third downlink included in the third channel has a second bandwidth overlap with a first downlink included in the first channel. the second bandwidth overlap includes a bandwidth corresponding to at least a portion the first bandwidth overlap, such that a signal spectrum in the first bandwidth overlap is included in the second bandwidth overlap. The computer is further programmed to optimize a bandwidth reduction across the plurality of sets of channels.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: August 4, 2020
    Assignee: Hughes Network Systems, LLC
    Inventors: Murali Regunathan, David A. Roos
  • Patent number: 10732292
    Abstract: A system and method for providing communications with a Low Earth Orbit (LEO) satellite constellation using a non-omnidirectional antenna is disclosed. A system and method for determining blockages around a non-omnidirectional antenna for use with a Low Earth Orbit (LEO) constellation is disclosed. The method including: receiving System Information (SI) including ephemeris data for satellites in the LEO constellation; receiving a segment division that divides a ground about the antenna into segments; and determining a segment blocking information for the antenna.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: August 4, 2020
    Assignee: Hughes Network Systems
    Inventor: Trevor Eagling
  • Patent number: 10735324
    Abstract: A method for controlling congestion of traffic, by one of one or more User Terminals (UTs), traversing an intermediate node, the method comprising: associating one or more traffic flows of a priority to one of the one or more UTs; detecting a traffic congestion for the priority; performing Random Early Detection (RED) congestion control for the priority to relieve the traffic congestion; selecting, for the priority, a User Terminal (UT) with a perceived delay greater than a high threshold; and controlling, by priority, the traffic flows associated with the selected UT.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: August 4, 2020
    Assignee: Hughes Network Systems, LLC
    Inventors: Rob Torres, Jun Xu, Vivek Gupta