Vt Idirect, Inc.

Idirect Incorporated

Christopher Donald Gregory

David D Bettinger

Conor Foley

Venugopal Eyyunni

Hai Quang Tang

Theodore A Schweitzer

Matthew A Reklau

Jason B Maiorana

Joseph Jude Boone

Hao Cheng

David B S Edsberg

Ronggang Qi

Baoyan Ding

Sang Ho Go

Shanmugavel Sivagnanavelu

A method, and a VSAT capable of being configured for such a method, of configuring a VSAT, the steps of which are setting, while an outdoor unit of the VSAT is at a configuration location, a maximum value of the adjustable gain of the up-converting device and transmitting, from an operating location that is separate from the configuration location, transmission signals to the satellite at the transmission frequency and with a gain value of at most the maximum value of the adjustable gain set at the configuration location.

Highly integrated very small aperture terminal (VSAT) apparatus and method

An apparatus and method to optimize recovery of the carrier frequency performs independent optimization of frequency capture range and carrier frequency estimation accuracy. A multi-correlator selects a frequency-shifted version of a signal of interest, extracted from a received signal, to output a coarse frequency-shifted version of the signal of interest. A fine frequency estimator shifts a frequency of the coarse frequency-shifted version of the signal of interest, based on a frequency corresponding to the spectral peak of the coarse frequency-shifted version of the signal of interest, and generates a fine frequency-shifted version of the signal of interest. A fine frequency estimator generates an intermediate frequency estimate and a plurality of phase estimates, based on the coarse frequency-shifted version of the signal of interest, resolves phase ambiguities in the plurality of phase estimates based on the intermediate frequency estimate, and generates a fine frequency-shifted version of the signal of interest.

Apparatus and method for optimization of carrier recovery in a receiver of a communication system

A communication system includes a hub, a repeater, and a remote. The hub is configured to adjust a transmission power of the remote depending on an external condition based on (i) a measured carrier-to-noise ratio CNof data transmitted from the hub to the repeater and back to the hub using a first signal, (ii) a measured carrier-to-noise ratio CNof data transmitted from the remote to the hub via the repeater using a second signal, (iii) a predetermined carrier-to-noise ratio CNof data transmitted from the hub to the repeater and back to the hub using the first signal under a clear sky condition, and (iv) a predetermined carrier-to-noise ratio CNof data transmitted from a reference remote to the repeater and back to the hub using the second signal under a clear sky condition.

Adjusting transmission power under changing conditions

A remote, a communications system, and a method in which the remote communicates with another remote via a repeater and also communicates with a hub. The remote includes a transceiver configured to receive a signal from the another remote, a measuring unit configured to measure a first offset, and a calculation unit configured to calculate a frequency offset for the signal based on (i) the first offset measured at the measuring unit, and (ii) a second offset measured at the hub.

Method to eliminate frequency offset introduced in a network

A communication method for a communication network includes transmitting first control information for a first frame from a hub to a plurality of user nodes, and receiving first data bursts in the first frame from first and second user nodes according to the first control information. A start of the first frame from the first and second user nodes occurs simultaneously at the hub. The method also includes transmitting second control information, based on demand information received from the first and second nodes, for a second frame from the hub after transmitting the first control information, receiving second data bursts in the second frame according to the second control information, and receiving the second frame at the hub following the first frame.

Method, apparatus, and system for transmitting control information in a communication network

A communication method for a communication network includes transmitting first control information for a first frame from a hub to a plurality of user nodes, and transmitting a first data burst in the first frame from a first user node and a second data burst in the first frame from a second user node to the hub according to the first control information. A start of the first frame from the first and second user nodes occurs simultaneously at the hub. The method also includes transmitting second control information for a second frame from the hub after transmitting the first control information, transmitting a third data burst in the second frame to the hub according to the second control information, and receiving the second frame at the hub following the first frame.

A communication network control method for a communication network including a hub and a plurality of user nodes includes adjusting system parameters to maximize communication data rate and minimize bit error rate given current conditions of the wireless channel, current loading of the network, and user constraints. In particular, the method includes transmitting a first plurality of symbols with a first modulation and first forward error correction in a frame from the hub to a first user node, and transmitting a second plurality of symbols with a second modulation and second forward error correction in the frame from the hub to the second user node.

Method, apparatus, and system for downstream recovery in a communication network

A communication network control method for a communication network including a hub and a plurality of user nodes includes adjusting system parameters to maximize communication data rate and minimize bit error rate given current conditions of the wireless channel, current loading of the network, and user constraints. In particular, the method includes transmitting a first and second frame with first and second control information from the hub to each user node, and transmitting a first and second respective data burst from each of the user nodes to the hub according to the first and second control information. The first data burst from each user node arrives simultaneously at the hub, and the second data burst from each user node arrives simultaneously at the hub. Further, the second data burst from each user node arrives immediately following the arrival of the first data burst from each user node.

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Potomac Falls, VA, United States of America

Christopher Donald Gregory