David B Gibbons

US Patent:

6347236, Feb 12, 2002

Filed:

Feb 24, 1997

Appl. No.:

08/803835

Inventors:

David Gibbons - Redmond WA
James Timothy Golden - Carnation WA

Assignee:

ATT Wireless Sevices, Inc. - Redmond WA

International Classification:

H04B 138

US Classification:

455574, 455343

Abstract:

A remote unit for a personal wireless area network includes a receiver, an AC power supply, a battery-backup power supply and a controller. The battery-backup becomes operative when the AC power supply fails and supplied power to the receiver. The controller detects when the AC power supply fails and controls the receiver and the battery-backup power supply by invoking a sleep mode of operation. The sleep mode of operation is periodically interrupted by the controller controlling the receiver and the battery-backup power supply to enter a standby mode of operation in which the receiver scans for a CONNECT message from a base station indicating an incoming call. The controller coordinates the sleep mode and the standby mode of operations based on a frame count that is generated from an identification number of the remote unit. A highly bandwidth-efficient communications method is employed in the base station to enable it to coordinate communication with the remote unit when it changes from the sleep mode to the standby mode.

US Patent:

6359923, Mar 19, 2002

Filed:

Dec 18, 1997

Appl. No.:

08/993721

Inventors:

Brian G. Agee - San Jose CA
Matthew Bromberg - San Jose CA
Derek Gerlach - Mountain View CA
David Gibbons - Redmond WA
James Timothy Golden - Carnation WA
Minnie Ho - Palo Alto CA
Elliott Hoole - Redmond WA
Mary Jesse - Issaquah WA
Robert Lee Maxwell - Duvall WA
Robert Ray Naish - San Jose CA
David J. Nix - Issaquah WA
David James Ryan - Alameda County CA
David Stephenson - San Jose CA

Assignee:

ATT Wireless Services, Inc. - Redmond WA

International Classification:

A61F 206

US Classification:

375130, 375135, 375136, 370342

Abstract:

A discrete multitone stacked-carrier spread spectrum communication method is based on frequency domain spreading including multiplication of a baseband signal by a set of superimposed, or stacked, complex sinusoid carrier waves. In a preferred embodiment, the spreading involves energizing the bins of a large Fast Fourier transform (FFT). This provides a considerable savings in computational complexity for moderate output FFT sizes. Point-to-multipoint and multipoint-to-multipoint (nodeless) network topologies are possible. A code-nulling method is included for interference cancellation and enhanced signal separation by exploiting the spectral diversity of the various sources. The basic method may be extended to include multielement antenna array nulling methods for interference cancellation and enhanced signal separation using spatial separation. Such methods permit directive and retrodirective rev transmission systems that adapt or can be adapted to the radio environment. Such systems are compatible with bandwidth-on-demand and higher-order modulation formats and use advanced adaptation algorithms.

US Patent:

6621851, Sep 16, 2003

Filed:

Nov 28, 2000

Appl. No.:

09/723337

Inventors:

Brian G. Agee - San Jose CA
Matthew Bromberg - San Jose CA
Derek Gerlach - Mountain View CA
David Gibbons - Redmond WA
James Timothy Golden - Carnation WA
Minnie Ho - Palo Alto CA
Elliott Hoole - Redmond WA
Mary Jesse - Issaquah WA
Robert Lee Maxwell - Duvall WA
Robert Ray Naish - San Jose CA
David J. Nix - Issaquah WA
David James Ryan - Oakland CA
David Stephenson - San Jose CA

Assignee:

ATT Wireless Services, Inc. - Redmond WA

International Classification:

H04B 169

US Classification:

375130, 375135, 370242

Abstract:

A discrete multitone stacked-carrier spread spectrum communication method is based on frequency domain spreading including multiplication of a baseband signal by a set of superimposed, or stacked, complex sinusoid carrier waves. In a preferred embodiment, the spreading involves energizing the bins of a large Fast Fourier transform (FFT). This provides a considerable savings in computational complexity for moderate output FFT sizes. Point-to-multipoint and multipoint-to-multipoint (nodeless) network topologies are possible. A code-nulling method is included for interference cancellation and enhanced signal separation by exploiting the spectral diversity of the various sources. The basic method may be extended to include multielement antenna array nulling methods for interference cancellation and enhanced signal separation using spatial separation. Such methods permit directive and retrodirective transmission systems that adapt or can be adapted to the radio environment. Such systems are compatible with bandwidth-on-demand and higher-order modulation formats and use advanced adaptation algorithms.

US Patent:

6639935, Oct 28, 2003

Filed:

Jul 12, 2001

Appl. No.:

09/902730

Inventors:

David Gibbons - Redmond WA
Robert Lee Maxwell - Duvall WA
David James Ryan - Seattle WA

Assignee:

ATT Wireless Services, Inc. - Redmond WA

International Classification:

H04B 169

US Classification:

375130, 375342

Abstract:

A new method makes the most efficient use of the scarce spectral bandwidth in a wireless discrete multitone spread spectrum communications system. Each remote station and each base station in the network prepares an error detection field, such as a cyclic redundancy code (CRC), on each block of data to be transmitted over the traffic channels. The sending station prepares an error detection message for transmission over the link control channel of the network. The sending station prepares the error detection message by forming a link control channel vector that will be spread using the discrete multitone spread spectrum (DMT-SS) protocol to distribute the data message over a plurality of discrete tone frequencies, forming a spread signal for the link control channel. A link control channel is associated with communications session using the traffic channels. The instant of transmission of the error detection message is allowed to be different from the instant of transmission of the data message.

US Patent:

6801513, Oct 5, 2004

Filed:

Jun 20, 2000

Appl. No.:

09/597044

Inventors:

David B. Gibbons - Redmond WA
Eamonn Gormley - Seattle WA
Liang A. Hong - Redmond WA
Elliott Hoole - Redmond WA
Kamyar Moinzadeh - Renton WA

Assignee:

ATT Wireless Services, Inc. - Redmond WA

International Classification:

H04J 116

US Classification:

370337, 370442

Abstract:

A wireless communication system having a base unit and a plurality of remote transceiver units utilizes a dynamic time slot assignment scheme for channel access. The base unit receives and processes a channel access request message from a remote transceiver unit and prepares a channel measurement request message in response. If an M time slot of a time frame is available, the base unit sends this message in the M time slot and receives a message having channel measurement data in the M time slot of the next time frame. On the other hand, if the M time slot of the time frame is already reserved, the base unit sends the message in an N time slot of the time frame and receives a message having the channel measurement data in the N time slot of the next time frame. The base unit selects, based on the channel measurement data, an appropriate channel for communication for the remote transceiver unit, Continuing with use of the dynamic slot assignment, the base unit sends a message having a channel identifier associated with the selected channel and receives an acknowledgement from the remote transceiver unit in response.

US Patent:

6801775, Oct 5, 2004

Filed:

Jun 20, 2000

Appl. No.:

09/597043

Inventors:

David B. Gibbons - Redmond WA
Eamonn Gormley - Seattle WA
Liang A. Hong - Redmond WA
Elliott Hoole - Redmond WA
Kamyar Moinzadeh - Renton WA

Assignee:

ATT Wireless Services, Inc. - Redmond WA

International Classification:

H04Q 720

US Classification:

455450, 455454, 4554261

Abstract:

A method of operating a communication system is disclosed. The method includes transmitting from a remote unit to a base station remote unit channel data. The remote unit channel is generated at the remote unit and includes data about a first portion of communication channels on which the call can be executed. The method also includes applying a channel selection method to the remote unit channel data and to base station channel data so as to select a communication channel from among the first portion of communication channels. The base station channel data is generated at the base station and includes data about a second portion of the communication channels. The method further includes executing a call on the selected communication channel.

US Patent:

7095708, Aug 22, 2006

Filed:

Jun 14, 2000

Appl. No.:

09/594467

Inventors:

Siavash Alamouti - Seattle WA, US
Jeffrey Battin - Duvall WA, US
David B. Gibbons - Redmond WA, US
James Timothy Golden - Carnation WA, US
Michael R. Hirano - Redmond WA, US
Elliott Hoole - Redmond WA, US
Mary Jesse - Issaquah WA, US
Robert Lee Maxwell - Duvall WA, US
Steven E. McMeekin - Nederland CO, US
David J. Nix - Austin TX, US
David James Ryan - Oakland CA, US
Gregory J. Veintimilla - Redmond WA, US
Hongliang Zhang - Bellevue WA, US

Assignee:

Cingular Wireless II, LLC - Atlanta GA

International Classification:

H04J 11/00

US Classification:

370208, 370210

Abstract:

A fixed wireless system (FWS) utilizing Orthogonal Frequency Division Multiplexing (OFDM) communication techniques is spectrally efficient and responsive to communications involving both voice and high speed data, such as Internet data. The FWS includes a wireless base unit; a plurality of fixed wireless remote units; a plurality of wireless data traffic channels available between the wireless base unit and the plurality of fixed wireless remote units; and a plurality of wireless voice traffic channels available between the wireless base unit and the plurality of fixed wireless remote units. Each wireless traffic channel is identifiable by a unique combination of frequency and time slots. Each wireless data traffic channel is used for carrying high speed data in addressed data packets to and from the plurality of fixed wireless remote units. On the other hand, each wireless voice traffic channel can be assigned and dedicated to a particular voice communication call involving one of the plurality of fixed wireless remote units for carrying voice data of the call.

US Patent:

7106781, Sep 12, 2006

Filed:

Aug 3, 2001

Appl. No.:

09/920903

Inventors:

Brian G. Agee - San Jose CA, US
Matthew Bromberg - San Jose CA, US
Derek Gerlach - Mountain View CA, US
David Gibbons - Redmond WA, US
James Timothy Golden - Carnation WA, US
Minnie Ho - Palo Alto CA, US
Elliott Hoole - Redmond WA, US
Mary Jesse - Issaquah WA, US
Robert Lee Maxwell - Duvall WA, US
Robert Ray Naish - San Jose CA, US
David J. Nix - Issaquah WA, US
David James Ryan - Seattle CA, US
David Stephenson - San Jose CA, US

Assignee:

Cingular Wireless II, LLC - Atlanta GA

International Classification:

H04B 1/69
H04B 7/216

US Classification:

375141, 370342

Abstract:

A discrete multitone stacked-carrier spread spectrum communication method is based on frequency domain spreading including multiplication of a baseband signal by a set of superimposed, or stacked, complex sinusoid carrier waves. In a preferred embodiment, the spreading involves energizing the bins of a large Fast Fourier transform (FFT). This provides a considerable savings in computational complexity for moderate output FFT sizes. Point-to-multipoint and multipoint-to-multipoint (nodeless) network topologies are possible. A code-nulling method is included for interference cancellation and enhanced signal separation by exploiting the spectral diversity of the various sources. The basic method may be extended to include multielement antenna array nulling methods for interference cancellation and enhanced signal separation using spatial separation. Such methods permit directive and retrodirective transmission systems that adapt or can be adapted to the radio environment. Such systems are compatible with bandwidth-on-demand and higher-order modulation formats and use advanced adaptation algorithms.