Douglas A. Duet
Engineering at Barberry Dr, Roswell, GA

License number
Louisiana PE.0011966
Issued Date
Aug 5, 1969
Expiration Date
Mar 31, 2018
Category
Civil Engineer
Type
Electrical and Computer Engineer
Address
Address
4134 Barberry Dr, Roswell, GA 30075

Professional information

Douglas Duet Photo 1

Wireless Broadband Service

US Patent:
6778517, Aug 17, 2004
Filed:
Oct 14, 1999
Appl. No.:
09/418986
Inventors:
Yuang Lou - Norcross GA
Douglas Duet - Roswell GA
Vijay Perumbeti - Norcross GA
David Payne - Atlanta GA
Assignee:
BellSouth Intellectual Property Corporation - Wilmington DE
International Classification:
H04L 1256
US Classification:
370338, 370352, 37039552, 379 8817, 379 9307, 455445
Abstract:
A fixed broadband wireless data access service providing shared wide-band packet-switched data transport for high speed data access in areas where conventional ADSL service and fiber optic service are unavailable. The wireless data access service is a point-to-multipoint cellular-type network that connects customers to data service providers through the ATM backbone of an existing network. Customers connect to the ATM backbone and data service provider through a cellular grid in which a wireless base station in each cell communicates with the individual customer wireless equipment within its cell site coverage area. The base stations are connected to an ATM backbone switch through wireless and wireline backhaul links. The upstream and downstream bandwidths of the wireless broadband network are engineered in various symmetric and asymmetric configurations to provide a shared packet-switched connection that emulates an uninterrupted, direct wireline ADSL connection. The wireless broadband network employs a data protocol of shared access bandwidth and adaptive asymmetric data rates to support multiuser service sessions by wireless transmission.


Douglas Duet Photo 2

Wireless Broadband Service

US Patent:
7995545, Aug 9, 2011
Filed:
Nov 5, 2007
Appl. No.:
11/934963
Inventors:
Yuang Lou - Norcross GA, US
Douglas Duet - Roswell GA, US
Vijay Perumbeti - Norcross GA, US
David Payne - Atlanta GA, US
Assignee:
AT & T Intellectual Proprty I, L.P. - Atlanta GA
International Classification:
H04W 4/00, H04W 40/00, H04L 12/28, H04L 12/56
US Classification:
370338, 370349, 37039552, 455445
Abstract:
A fixed broadband wireless data access service providing shared wide-band packet-switched data transport for high speed data access in areas where conventional ADSL service and fiber optic service are unavailable. The wireless data access service is a point-to-multipoint cellular-type network that connects customers to data service providers through the ATM backbone of an existing network. Customers connect to the ATM backbone and data service provider through a cellular grid in which a wireless base station in each cell communicates with the individual customer wireless equipment within its cell site coverage area. The base stations are connected to an ATM backbone switch through wireless and wireline backhaul links. The upstream and downstream bandwidths of the wireless broadband network are engineered in various symmetric and asymmetric configurations to provide a shared packet-switched connection that emulates an uninterrupted, direct wireline ADSL connection. The wireless broadband network employs a data protocol of shared access bandwidth and adaptive asymmetric data rates to support multiuser service sessions by wireless transmission.


Douglas Duet Photo 3

Wireless Broadband Service

US Patent:
8149802, Apr 3, 2012
Filed:
Nov 5, 2007
Appl. No.:
11/935037
Inventors:
Yuang Lou - Norcross GA, US
Douglas Duet - Roswell GA, US
Vijay Perumbeti - Norcross GA, US
David Payne - Atlanta GA, US
Assignee:
AT&T Intellectual Property I, LP - Atlanta GA
International Classification:
H04W 4/00, H04W 40/00, H04W 72/00, H04L 12/28, H04L 12/56
US Classification:
370338, 370349, 37039541, 37039552, 455445, 455453
Abstract:
A fixed broadband wireless data access service providing shared wide-band packet-switched data transport for high speed data access in areas where conventional ADSL service and fiber optic service are unavailable. The wireless data access service is a point-to-multipoint cellular-type network that connects customers to data service providers through the ATM backbone of an existing network. Customers connect to the ATM backbone and data service provider through a cellular grid in which a wireless base station in each cell communicates with the individual customer wireless equipment within its cell site coverage area. The base stations are connected to an ATM backbone switch through wireless and wireline backhaul links. The upstream and downstream bandwidths of the wireless broadband network are engineered in various symmetric and asymmetric configurations to provide a shared packet-switched connection that emulates an uninterrupted, direct wireline ADSL connection. The wireless broadband network employs a data protocol of shared access bandwidth and adaptive asymmetric data rates to support multiuser service sessions by wireless transmission.


Douglas Duet Photo 4

Wireless Broadband Service

US Patent:
7292560, Nov 6, 2007
Filed:
Jun 29, 2004
Appl. No.:
10/879477
Inventors:
Yuang Lou - Norcross GA, US
Douglas Duet - Roswell GA, US
Vijay Perumbeti - Norcross GA, US
David Payne - Atlanta GA, US
Assignee:
AT&T BLS Intellectual Property, Inc. - Wilmington DE
International Classification:
H04Q 7/20, H04L 12/56
US Classification:
370338, 370349, 37039552, 455445
Abstract:
A fixed broadband wireless data access service providing shared wide-band packet-switched data transport for high speed data access in areas where conventional ADSL service and fiber optic service are unavailable. The wireless data access service is a point-to-multipoint cellular-type network that connects customers to data service providers through the ATM backbone of an existing network. Customers connect to the ATM backbone and data service provider through a cellular grid in which a wireless base station in each cell communicates with the individual customer wireless equipment within its cell site coverage area. The base stations are connected to an ATM backbone switch through wireless and wireline backhaul links. The upstream and downstream bandwidths of the wireless broadband network are engineered in various symmetric and asymmetric configurations to provide a shared packet-switched connection that emulates an uninterrupted, direct wireline ADSL connection. The wireless broadband network employs a data protocol of shared access bandwidth and adaptive asymmetric data rates to support multiuser service sessions by wireless transmission.


Douglas Duet Photo 5

Enhanced Connection Acquisition Using An Array Antenna

US Patent:
8229506, Jul 24, 2012
Filed:
Jan 4, 2007
Appl. No.:
11/619815
Inventors:
Douglas Duet - Roswell GA, US
Yuang Lou - Dunwoody GA, US
Assignee:
AT&T Intellectual Property I, L.P. - Atlanta GA
International Classification:
H04M 1/00
US Classification:
4555621, 455561, 342368, 343757
Abstract:
An array antenna is utilized to enhance the adaptive acquisition capability of a communication connection with one or more wireless subscribers. Subscribers who are located outside the omnidirectional range of the array antenna are acquired by using adaptive beamforming techniques to create an acquisition beam dedicated to acquiring new connections with wireless subscribers. The acquisition beam may sweep through the coverage of the array antenna seeking subscribers who lie beyond the omni range of the array antenna, but fall within the acquisition range using adaptive beamforming.