Venugopal V Eyyunni

US Patent:

7274908, Sep 25, 2007

Filed:

Nov 26, 2003

Appl. No.:

10/721414

Inventors:

Joseph J. Boone - Fairfax VA, US
Hao Cheng - Herndon VA, US
David B. S. Edsberg - Herndon VA, US
Venugopal Eyyunni - Centreville VA, US
Jason B. Maiorana - Vienna VA, US

Assignee:

IDirect Incorporated - Reston VA

International Classification:

H04B 7/19
H04J 3/06

US Classification:

455 132, 455502, 455430, 455420, 370509

Abstract:

A demand assignment method for a communication network including a hub and a plurality of user nodes includes adding a demand field to each data burst from a user node. Further, the method includes transmitting a first and second frame with first and second burst time plans from the hub to each user node, and transmitting a first and second respective data burst and demand field 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.

US Patent:

7940714, May 10, 2011

Filed:

Jan 19, 2010

Appl. No.:

12/689888

Inventors:

David D. Bettinger - Chantilly VA, US
Joseph J. Boone - Fairfax VA, US
Hao Cheng - Hernon VA, US
David B. S. Edsberg - Eagle Mountain UT, US
Venugopal Eyyunni - Centreville VA, US
Conor Foley - Sterling VA, US
Christopher D. Gregory - Potomac Falls VA, US
Jason B. Maiorana - Vienna VA, US

Assignee:

VT iDirect, Inc. - Herndon VA

International Classification:

H04B 7/185
H04J 3/06
H04B 7/19

US Classification:

370316, 370350, 455 121, 455 131, 455 132

Abstract:

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.

US Patent:

8027285, Sep 27, 2011

Filed:

Jun 15, 2007

Appl. No.:

11/763986

Inventors:

Venugopal Eyyunni - Centreville VA, US
Christopher Donald Gregory - Potomac Falls VA, US
Conor Foley - Sterling VA, US

Assignee:

VT iDirect, Inc. - Herndon VA

International Classification:

H04B 7/14

US Classification:

370315, 455 131, 455 132, 455430

Abstract:

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.

US Patent:

8068448, Nov 29, 2011

Filed:

Jun 15, 2007

Appl. No.:

11/764004

Inventors:

Conor Foley - Sterling VA, US
Venugopal Eyyunni - Centreville VA, US

Assignee:

VT iDirect, Inc. - Herndon VA

International Classification:

H04B 7/22

US Classification:

370324, 370316, 455 121, 455 131, 455 132

Abstract:

A satellite communication system includes a hub, a repeater, a scheduling unit, and a remote. The scheduling unit is configured to synchronize a communication of the system based on an elapsed time between (i) an arrival at the remote of a downstream reference frame transmitted by the hub and retransmitted by the repeater, and (ii) an arrival at the remote of an upstream frame transmitted by the remote and retransmitted by the repeater.

US Patent:

8094606, Jan 10, 2012

Filed:

Jun 15, 2007

Appl. No.:

11/764020

Inventors:

Conor Foley - Sterling VA, US
Christopher Donald Gregory - Potomac Falls VA, US
Sang Ho Go - Sterling VA, US
Venugopal Eyyunni - Centreville VA, US

Assignee:

VT Idirect, Inc. - Herndon VA

International Classification:

H04B 7/185

US Classification:

370318, 455 8, 455 9, 455 111, 455 121, 455 131, 455 10

Abstract:

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.

US Patent:

7257371, Aug 14, 2007

Filed:

Nov 26, 2003

Appl. No.:

10/721497

Inventors:

David D. Bettinger - Chantilly VA, US
Joseph J. Boone - Fairfax VA, US
Hao Cheng - Herndon VA, US
David B. S. Edsberg - Herndon VA, US
Venugopal Eyyunni - Centreville VA, US
Conor Foley - Sterling VA, US
Christopher D. Gregory - Herndon VA, US
Jason B. Maiorana - Vienna VA, US

Assignee:

Idirect Incorporated - Reston VA

International Classification:

H04B 7/19
H04J 3/06

US Classification:

455 132, 455502, 455430, 455420, 370509

Abstract:

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.