Method for categorization of multiple providers in a wireless communications service environment

• US 6,195,532 B1
• Filed: 06/28/1996
• Issued: 02/27/2001
• Est. Priority Date: 06/28/1996
• Status: Expired due to Term

• Current Assignee: AT&T Mobility II LLC (AT&T, Inc.)
• Original Assignee: AT&T Wireless Services Incorporated (AT&T, Inc.)
• Inventors: Raffel, Michael Allen, Lawrence, Christopher Gregory, Daly, John J., Bamburak, Michael D., Prise, Michael Edward
• Primary Examiner(s): Cuchlinski, Jr., William A.
• Assistant Examiner(s): ARTHUR JEANGLAUDE, GERTRUDE
• Application Number:
  US08/672,908
• Time in Patent Office: 1,705 Days
• Field of Search: 455/62, 455/67.1, 455/67.7, 455/120, 455/154.1, 455/154.2, 455/160.1, 455/161--16, 455/179.1, 455/180.1, 455/186.1, 455/186.2, 455/185.1, 455/447, 455/450, 455/464, 455/161.3, 455/161.2, 455/422, 455/551, 455/552, 455/31.1
• US Class Current: 340/7.42
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 48/18 Selecting a network or a communication service
• CPC Class Codes: H04W 60/00 Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

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.

Claims

1. A method by which a communication device locates a wireless service provider in a multi-service provider environment, comprising the steps of:

storing a frequency band search schedule, the frequency band search schedule having a plurality of bands in a predetermined order;

storing information on a plurality of categories of service providers;

examining frequency bands until a frequency band having an acceptable frequency signal strength and an acceptable service provider is located by examining the plurality of bands in the order specified by the frequency band search schedule; and

identifying a category of service provider for the acceptable service provider.

2. The method of claim 1, wherein the step of identifying a category of service provider for the acceptable service provider further comprises the step of comparing information broadcast on a frequency band control channel with the stored information on a plurality of categories of service providers.

3. The method of claim 2, wherein the step of comparing information further comprises the step of comparing service identifier codes.

4. The method of claim 2, wherein the step of comparing information further comprises the step of comparing service operator codes.

5. The method of claim 1, further comprising the step of modifying the information on a plurality of categories of service providers using information transmitted over a wireless interface.

6. The method of claim 1, further comprising the step of modifying the information on a plurality of categories of service providers using information from a keypad.

7. A method by which a communication device locates a wireless service provider in a multi-service provider environment, comprising the steps of:

storing a frequency band search schedule, the frequency band search schedule having a plurality of bands in a predetermined order;

storing information for a plurality of categories of service providers;

storing alphanumeric indicators associated with each of the plurality of categories of service providers;

examining frequency bands until a frequency band having an acceptable frequency signal strength and an acceptable service provider is located by examining the plurality of bands in the order specified by the frequency band search schedule; and

identifying a category of service provider and an associated alphanumeric indicator for the acceptable service provider.

8. The method of claim 7, further comprising the step of displaying the alphanumeric indicator of the acceptable service provider.

9. The method of claim 7, further comprising the step of modifying the alphanumeric indicators associated with each of the plurality of categories of service providers using information transmitted over a wireless interface.

10. The method of claim 7, further comprising the step of modifying the alphanumeric indicators associated with each of the plurality of categories of service providers using information from a keypad.