Hughes Network Systems, LLC

Hughes Electronics Corporation

Other

Hughes Aircraft Company

At&t Wireless Services, Inc.

Claircom Communications Group, Inc.

David Alan Roos

Stanley Edward Kay

Anthony Robert Noerpel

Murali Regunathan

Yezdi F Antia

Adrian J Morris

Channasandra S Ravishankar

John Leonard Border

Robert James Torres

Neal David Becker

Michael I Parr

Peter Hou

Mohammad Soleimani

Yash Vasavada

Bingqian Lu

David Whitefield

Walter Robert Kepley, Iii

Adrian Morris

Chandra Joshi

Liming Qin

Enrique Laborde

Taiwei Yue

Seok Ho Kim

Marwan Adas

Prachi Raikar

Neeraj Tewari

Wei Zhao

John T Sullivan

Chi-Jiun Su

James Jehong Jong

Kumar Swaminathan

John E Corrigan, Iii

James Hobza

Moe Rahnema

Robert Carroll Marquart

James Eryx Malcolm

Bahman Salamat

Robert W Davis, Iii

Andrew W Brandt

Prabir Datta

Robert A Summers

Mohammad N Bukhari

Pradman Kaul

Gerard Stelzer

Yi Chen

Richard M Gardner

Gregory J Capone

Matthew Mehdi Mohebbi

John Dennis Kenyon

Jean-Aicard Fabien

Ying Liu

Matthew M Mohebbi

Allan A D'Souza

James E Malcolm

Seok-Ho Kim

John R Clewer

Daniel Fraley

Xiang Chen

Yash M Vasavada

Walter Robert Kepley Iii

A user terminal and a method of using the user terminal disclosed. The method may comprise: storing, at a user terminal (UT), a dataset that comprises a plurality of elements, wherein each of the plurality of elements is associated with a unique predetermined terrestrial location; using the dataset, determining an element (E) from among the plurality of elements based on a proximity of the UT to the respective unique, predetermined terrestrial location of the element (E); and then determining one of the plurality of satellite beams with which to utilize satellite communication.

Satellite beam determination

Systems and methods are described, and one method includes storing, in association with a backup gateway resource, a first and second primary to backup (P2B) pairing coefficient, and a first and second backup to primary (B2P) pairing coefficient. The first and second P2B pairing coefficients correspond to a first and second P2B pairing, respectively. The first and second B2P pairing coefficients are indicative of a metric of switching from the backup GWR to the first and second primary GWRs. A respective unavailability metric is received from the first primary GWR, second primary GWR, respectively, and backup GWR. A P2B pairing is selected selecting, based at least partially on the first and second P2B pairing coefficients, and first and the second B2P pairing coefficients. Traffic is switched to the backup GWR from the one of the first primary and second primary GWR corresponding to the selected P2B pairing.

System and method for generic diversity gateway switching for a satellite communication system

A method of switching from a first gateway within a plurality of first gateways to a second gateway in a network includes precaching configuration information on the second gateway, that is within the first gateways, prior to switch-over to the second gateway. The first gateway from which the second gateway is being switched is identified. The second gateway is configured in accordance with the configuration of the first gateway based on the precached configuration information prior to the switch-over to the second gateway. Data traffic from data applications using the network is replicated and sent to the first gateway and the second gateway. Bandwidths allocated to terminals in the network are frozen in association with the switch-over to the second gateway. The bandwidths allocated to the terminals in the network are unfrozen based at least in part on an indication of completion of the switch-over to the second gateway.

Gateway diversity switching

Various antenna systems are presented that have independently steerable receive and transmit beams. The antenna system may include multiple antenna element systems. Each antenna element system may include multiple phase shifters that alter the phase of received signals and signals to be transmitted. Directions of a first transmit beam, a second transmit beam, a first receive beam, and a second receive beam may be steered independently using the phase shifters. Each antenna element system may include a polarization system.

Phased array with independently steerable beams

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.

Interference reduction with optimized bandwidth utilization

Each of a plurality of signal measurement circuits is included in a terminal. Each measurement circuit receives a signal from a transmitter in a satellite and measures characteristics of the signal. A computer is programmed to receive data from the signal measurement circuits. The data indicates characteristics of the signal, including a strength of the signal. The computer determines an initial estimated satellite pointing direction, and generates subsequent estimated satellite pointing directions. For the initial and subsequent estimated pointing directions, the strength of the signal received by each measurement circuit is compared with an expected strength of the signal based on the respective estimated pointing direction. Each subsequent estimate is based at least in part on the comparison of the immediately preceding estimate. Based on the comparisons, the computer estimates a current satellite pointing direction.

Correcting satellite pointing direction

An apparatus for satellite selection within a multi-satellite communication system, comprising an antenna, receiver, and transmitter, and a processing module configured to calculate a normalized distance metric for the plurality of user spot beams of a first and second satellite, select the user spot beam with the lowest normalized distance metric, and determine which of the at least first or second satellite is transmitting the selected user spot beam. Further, a method for increasing the aggregate capacity of a satellite communications network, comprising identifying high traffic regions within a coverage area of a first satellite, determining which user spot beams of the first satellite are available to each of the identified regions, determining a normalized distance metric for each user spot beam identified, and plotting a second beam pattern of a second satellite to produce at least one user spot beam with a lower normalized distance metric.

Method and apparatus for beam selection for a multibeam, multi-satellite communications system

An apparatus for defining and generating boundaries of satellite coverage. The apparatus includes a processor that is configured to select a plurality of beam points, from a set of points on a coordinate system, to be included within a beam definition, and determine a number of ellipses capable of enclosing the selected beam points while excluding all remaining points of the set of points. The processor then assigns the selected beam points to a corresponding ellipse, and optimizes geometric information for each ellipse to enclose the beam points assigned thereto. A coverage beam is then defined based on a contour resulting from the combined shape of all the ellipses using the optimized geometric information.

Apparatus and method for generating boundaries of satellite coverage beams

A processor includes a memory storing instructions executable by the processor. The instructions include determining a capacity of a plurality of satellite beams based at least in part on a beam traffic density associated with each of the plurality of satellite beams and transmitting, to a communication satellite, a control signal that commands the communication satellite to transmit the plurality of satellite beams in accordance with the beam traffic density determined by the processor. The processor may be incorporated into a telecommunications system that includes a communication satellite programmed to transmit signals in accordance with a plurality of beams.

Sizing satellite beam capacity

A receiver is used with third code blocks based on first code blocks, second code blocks, and a planning code block. The first code blocks are associated with a first sequence number and modulated with a first modulation scheme. The second code blocks are associated with a second sequence number and modulated with a second modulation scheme. The planning code block associates the third code blocks with the first code blocks and the second code blocks. The receiver includes a de-multiplexing portion, which includes a code block selector and a look up table, that outputs a de-multiplexed signal based on the third code blocks. The code block selector selects a code block from the third code blocks to output as the de-multiplexed signal based on entries in the look up table. The receiver also includes a recovery portion that outputs received code blocks based on the de-multiplexed signal.

Method and apparatus for data rate controller for a code block multiplexing scheme

A method and a satellite terminal are provided. The satellite terminal may range over multiple frequencies and may receive, from a satellite gateway, a signal quality indicator with respect to each of the ranged multiple frequencies. Noise and interference for a corresponding frequency are estimated based on at least one of the received signal quality indicators for the corresponding frequency. Path loss is estimated based on multiple received signal quality indicators, each of which is received in response to the satellite terminal transmitting a signal while not performing the ranging process. A transmit power level of the satellite terminal is adjusted for the corresponding frequency based on the estimated path loss and the estimated noise and interference for the corresponding frequency.

Interference compensation in uplink power control

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Boyds, MD, United States of America

David Alan Roos