Christopher James Lawrence

US Patent:

6026299, Feb 15, 2000

Filed:

Dec 12, 1995

Appl. No.:

8/570902

Inventors:

Michael D. Bamburak - Columbia MD
John J. Daly - Neshanic Station NJ
Christopher Gregory Lawrence - Kirkland WA
Michael Edward Prise - Kirkland WA
Michael Allen Raffel - Redmond WA

Assignee:

AT&T Wireless Services Inc - Kirkland WA

International Classification:

H04B 100

US Classification:

455434

Abstract:

A powered down communication device locates a wireless service provider in a multi-service provider environment by examining frequency bands while powered down until a frequency band having an acceptable service provider is located. The frequency bands are examined in an order specified by a stored search schedule. An acceptable service provider is identified by comparing the identity of a service provider specified by an identifier received from a band being examined with a list of acceptable service providers. The communication device then registers with the acceptable service provider when powered up.

US Patent:

6377787, Apr 23, 2002

Filed:

Jun 14, 1999

Appl. No.:

09/332499

Inventors:

Michael D. Bamburak - Columbia MD
John J. Daly - Neshanic Station NJ
Christopher Gregory Lawrence - Kirkland WA
Michael Edward Prise - Kirkland WA
Michael Allen Raffel - Redmond WA

Assignee:

ATT Wireless Services, Inc. - Redmond WA

International Classification:

H04Q 720

US Classification:

4551611, 455422, 455432, 455433, 455435, 455455

Abstract:

A communication device locates a preferable wireless service provider in a multi-service provider environment using a frequency band search schedule. Initially, the communications device registers with a less preferred service provider in a first frequency band. While remaining registered with the less preferred service provider, the device examines several frequency bands in the order specified by the frequency band search schedule. A frequency band is examined by dividing the frequency band into many sub-bands, and by locating the strongest signal above a threshold within the sub-band being examined. The examination continues until a second frequency band having a more preferred service provider is located. The communication device then registers with the more preferred service provider. The category of service provider may be identified and displayed on the communication device.

US Patent:

6418318, Jul 9, 2002

Filed:

Dec 12, 1995

Appl. No.:

08/570904

Inventors:

Michael D. Bamburak - Columbia MD
John J. Daly - Neshanic Station NJ
Christopher Gregory Lawrence - Kirkland WA
Michael Edward Prise - Kirkland WA
Michael Allen Raffel - Redmond WA

Assignee:

ATT Wireless Services, Inc. - Redmond WA

International Classification:

H04Q 720

US Classification:

455455

Abstract:

A communication device locates a preferable wireless service provider in a multi-service provider environment using a frequency band search schedule. Initially, the communications device registers with a less preferred service provider in a first frequency band. While remaining registered with the less preferred service provider, the device examines several frequency bands in the order specified by the frequency band search schedule. A frequency band is examined by dividing the frequency band into many sub-bands, and by locating the strongest signal above a threshold within the sub-band being examined. The examination continues until a second frequency band having a more preferred service provider is located. The communication device then registers with the more preferred service provider.

US Patent:

6430396, Aug 6, 2002

Filed:

Oct 25, 1999

Appl. No.:

09/425240

Inventors:

Michael D. Bamburak - Columbia MD
John J. Daly - Neshanic Station NJ
Christopher Gregory Lawrence - Kirkland WA
Michael Edward Prise - Kirkland WA
Michael Allen Raffel - Redmond WA

Assignee:

ATT Wireless Services, Inc. - Redmond WA

International Classification:

H04B 1500

US Classification:

455 62, 455434, 4551681

Abstract:

A communication device locates a wireless service provider in a multi-service provider environment using a frequency band search schedule. The frequency band search schedule has a first or home band and a several other frequency bands in a predetermined order. The order of the frequency bands may be programmed by the user or by a home service provider over the air. The communication device searches for an acceptable service provider by examining the home band and then the other bands listed in the frequency band search schedule. The bands are examined in the order specified by the frequency band search schedule. An acceptable service provider is identified by comparing the identity of a service provider specified by an identifier received from a band being examined with a list of acceptable service providers.

US Patent:

6771961, Aug 3, 2004

Filed:

May 28, 2002

Appl. No.:

10/154856

Inventors:

Michael D. Bamburak - Columbia MD
John J. Daly - Neshanic Station NJ
Christopher Gregory Lawrence - Kirkland WA
Michael Edward Prise - Kirkland WA
Michael Allen Raffel - Redmond WA

Assignee:

ATT Wireless Services, Inc. - Redmond WA

International Classification:

H04Q 720

US Classification:

455434, 4555751, 455466

Abstract:

A communication device locates a wireless service provider in a multi-service provider environment using a frequency band search schedule. The frequency band search schedule has a first or home band and a several other frequency bands in a predetermined order. The order of the frequency bands may be programmed by the user or by a home service provider over the air. The communication device searches for an acceptable service provider by examining the home band and then the other bands listed in the frequency band search schedule. The bands are examined in the order specified by the frequency band search schedule. An acceptable service provider is identified by comparing the identity of a service provider specified by an identifier received from a band being examined with a list of acceptable service providers.

US Patent:

6782259, Aug 24, 2004

Filed:

Mar 19, 2002

Appl. No.:

10/099944

Inventors:

Michael D. Bamburak - Columbia MD
John J. Daly - Neshanic Station NJ
Christopher Gregory Lawrence - Kirkland WA
Michael Edward Prise - Kirkland WA
Michael Allen Raffel - Redmond WA

Assignee:

ATT Wireless Services, Inc. - Redmond WA

International Classification:

H04Q 720

US Classification:

455434, 455 62, 4551662, 4554353, 4555521

Abstract:

A communication device locates a preferable wireless service provider in a multi-service provider environment using a frequency or frequency band search schedule. Initially, the communication device registers with a less preferred service provider in a first frequency. While remaining registered with the less preferred service provider, the device examines several frequencies in the order specified by the frequency search schedule. The device determines whether the last frequency used by the communication device has a more preferred service provider. If the last frequency used does not have a more preferred service provider, the device examines each of the plurality of frequencies in the predetermined order in the search schedule. The examination continues until another frequency band having a more preferred service provider is located. The communication device then registers with the more preferred service provider.

US Patent:

6807418, Oct 19, 2004

Filed:

Mar 19, 2002

Appl. No.:

10/099992

Inventors:

Michael D. Bamburak - Columbia MD
John J. Daly - Neshanic Station NJ
Christopher Gregory Lawrence - Kirkland WA
Michael Edward Prise - Kirkland WA
Michael Allen Raffel - Redmond WA

Assignee:

ATT Wireless Services, Inc. - Redmond WA

International Classification:

H04Q 720

US Classification:

4554352, 4551611

Abstract:

A communication device locates a preferable wireless service provider in a multi-service provider environment using a frequency band search schedule. Initially, the communications device registers with a less preferred service provider in a first frequency band. While remaining registered with the less preferred service provider, the device examines several frequency bands in the order specified by the frequency band search schedule. A frequency band is examined by dividing the frequency band into many sub-bands, and by locating the strongest signal above a threshold within the sub-band being examined. The examination continues until a second frequency band having a more preferred service provider is located. The communication device then registers with the more preferred service provider. The category of service provider may be identified and displayed on the communication device.

US Patent:

7346350, Mar 18, 2008

Filed:

May 26, 2004

Appl. No.:

10/853246

Inventors:

Michael D. Bamburak - Columbia MD, US
John J. Daly - Neshanic Station NJ, US
Christopher G. Lawrence - Kirkland WA, US
Michael E. Prise - Kirkland WA, US
Michael A. Raffel - Redmond WA, US

Assignee:

AT&T Mobility LLC - Atlanta GA

International Classification:

H04Q 7/20

US Classification:

455434, 455 62, 4551662, 4554351, 4555521

Abstract:

A communication device locates a preferable wireless service provider in a multi-service provider environment using a frequency or frequency band search schedule. Initially, the communication device registers with a less preferred service provider in a first frequency. While remaining registered with the less preferred service provider, the device examines several frequencies in the order specified by the frequency search schedule. The device determines whether the last frequency used by the communication device has a more preferred service provider. If the last frequency used does not have a more preferred service provider, the device examines each of the plurality of frequencies in the predetermined order in the search schedule. The examination continues until another frequency band having a more preferred service provider is located. The communication device then registers with the more preferred service provider.