Patent US6418318B1 successfully refreshed from Google Patents.
US6418318B1
Expired / Lapsed
US
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Method for selecting a preferable wireless communications service provider in a multi-service provider environment
Assignee: AT&T Mobility II LLC
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Filing: 1995-12-12
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Granted: 2002-07-09
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Expires: 2015-12-12
Abstract
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.
Inventors
- 👤 Michael D. Bamburak
- 👤 John J. Daly
- 👤 Christopher Gregory Lawrence
- 👤 Michael Edward Prise
- 👤 Michael Allen Raffel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:51
CPC Classifications
H; H04; H04W; H04W36/00; H04W36/0005; H04W36/0083; H04W36/0085; H04W48/00; H04W48/16; H04W48/18
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
227 words
A method of communicating between a communication device and a wireless service provider in a multi-service provider environment using a frequency band search schedule that is stored in the communication device and specifies a predetermined order of frequency bands, the communication device: 1) receiving a plurality of frequency bands, 2) associating with a less preferred service provider in a frequency band of the plurality of frequency bands, 3) examining the plurality of frequency bands in the predetermined order specified by the frequency band search schedule while remaining associated with the less preferred service provider until another frequency band of the plurality of frequency bands having a more preferred service provider is located, the examination being conducted by determining whether a last frequency band used by the communication device has a more preferred service provider and if the last frequency band does not have a more preferred service provider, then determining whether a home frequency band of the communication device has a more preferred service provider, and 4) registering with the more preferred service provider, the method comprising: transmitting a code from the wireless service provider to the communication device, the code identifying the wireless service provider as a wireless service provider permitted to transmit modification information; and transmitting modification information from the permitted wireless service provider to the communication device for modifying the frequency band search schedule.
Claim 2
Independent Claim
227 words
A method of communicating between a communication device and a wireless service provider in a multi-service provider environment using a frequency band search schedule that is stored in the communication device and specifies a predetermined order of frequency bands, the communication device: 1) receiving a plurality of frequency bands, 2) associating with a less preferred service provider in a frequency band of the plurality of frequency bands, 3) examining the plurality of frequency bands in the predetermined order specified by the frequency band search schedule while remaining associated with the less preferred service provider until another frequency band of the plurality of frequency bands having a more preferred service provider is located, the examination being conducted by determining whether a last frequency band used by the communication device has a more preferred service provider and if the last frequency band does not have a more preferred service provider, then determining whether a home frequency band of the communication device has a more preferred service provider, and 4) registering with the more preferred service provider, the method comprising: transmitting a code from the wireless service provider to the communication device, the code identifying the wireless service provider as a wireless service provider permitted to transmit modification information; and transmitting modification information from the permitted wireless service provider to the communication device for modifying the frequency band search schedule.
Claim 3
Independent Claim
214 words
A method of communicating between a communication device and a wireless service provider in a multi-service provider environment using a frequency band search schedule that is stored in the communication device and specifies a predetermined order of frequency bands, the communication device: 1) receiving a plurality of frequency bands, 2) associating with a less preferred service provider in a frequency band of the plurality of frequency bands, 3) examining the plurality of frequency bands in the predetermined order specified by the frequency band search schedule while remaining associated with the less preferred service provider until another frequency band of the plurality of frequency bands having a more preferred service provider is located, the examination being conducted by determining whether a last frequency band used by the communication device has a more preferred service provider and if the last frequency band does not have a more preferred service provider, then determining whether a home frequency band of the communication device has a more preferred service provider, and 4) registering with the more preferred service provider, the method comprising: transmitting modification information from the wireless service provider to the communication device for modifying the frequency band search schedule, the wireless service provider receiving confirmation information from the communication device that the modification information has been transmitted.
Claim 4
Independent Claim
214 words
A method of communicating between a communication device and a wireless service provider in a multi-service provider environment using a frequency band search schedule that is stored in the communication device and specifies a predetermined order of frequency bands, the communication device: 1) receiving a plurality of frequency bands, 2) associating with a less preferred service provider in a frequency band of the plurality of frequency bands, 3) examining the plurality of frequency bands in the predetermined order specified by the frequency band search schedule while remaining associated with the less preferred service provider until another frequency band of the plurality of frequency bands having a more preferred service provider is located, the examination being conducted by determining whether a last frequency band used by the communication device has a more preferred service provider and if the last frequency band does not have a more preferred service provider, then determining whether a home frequency band of the communication device has a more preferred service provider, and 4) registering with the more preferred service provider, the method comprising: transmitting modification information from the wireless service provider to the communication device for modifying the frequency band search schedule, the wireless service provider receiving confirmation information from the communication device that the modification information has been transmitted.
Claim 5
Dependent Claim
176 words
A communication device that locates a preferable wireless service provider in a multi-service provider environment using a frequency band search schedule stored in the communication device that specifies a predetermined order of frequency bands, the communication device comprising: a transceiver that receives a plurality of frequency bands; and a controller that: 1) associates with a less preferred service provider in a frequency band of the plurality of frequency bands, 2) examines the plurality of frequency bands in the predetermined order specified by the frequency band search schedule while remaining associated with the less preferred service provider until another frequency band of the plurality of frequency bands having a more preferred service provider is located, the examination being conducted by determining whether a last frequency band used by the communication device has a more preferred service provider and if the last frequency band does not have a more preferred service provider, then determining whether a home frequency band of the communication device has a more preferred service provider, and 3) registers with the more preferred service provider.
Claim 6
Dependent Claim
176 words
A communication device that locates a preferable wireless service provider in a multi-service provider environment using a frequency band search schedule stored in the communication device that specifies a predetermined order of frequency bands, the communication device comprising: a transceiver that receives a plurality of frequency bands; and a controller that: 1) associates with a less preferred service provider in a frequency band of the plurality of frequency bands, 2) examines the plurality of frequency bands in the predetermined order specified by the frequency band search schedule while remaining associated with the less preferred service provider until another frequency band of the plurality of frequency bands having a more preferred service provider is located, the examination being conducted by determining whether a last frequency band used by the communication device has a more preferred service provider and if the last frequency band does not have a more preferred service provider, then determining whether a home frequency band of the communication device has a more preferred service provider, and 3) registers with the more preferred service provider.
Claim 7
Independent Claim
211 words
A method of communicating between a communication device and a wireless service provider in a multi-service provider environment using a search schedule that is stored in the communication device and specifies a predetermined order of frequencies, the communication device: 1) receiving a plurality of frequencies, 2) associating with a less preferred service provider in a frequency of the plurality of frequencies, 3) examining the plurality of frequencies in the predetermined order specified by the search schedule while remaining associated with the less preferred service provider until another frequency of the plurality of frequencies having a more preferred service provider is located, the examination being conducted by determining whether a last frequency used by the communication device has a more preferred service provider and if the last frequency does not have a more preferred service provider, then determining whether a home frequency of the communication device has a more preferred service provider, and 4) registering with the more preferred service provider, the method comprising: transmitting a code from the wireless service provider to the communication device, the code identifying the wireless service provider as a wireless service provider permitted to transmit modification information; and transmitting modification information from the permitted wireless service provider to the communication device for modifying the search schedule.
Claim 8
Independent Claim
211 words
A method of communicating between a communication device and a wireless service provider in a multi-service provider environment using a search schedule that is stored in the communication device and specifies a predetermined order of frequencies, the communication device: 1) receiving a plurality of frequencies, 2) associating with a less preferred service provider in a frequency of the plurality of frequencies, 3) examining the plurality of frequencies in the predetermined order specified by the search schedule while remaining associated with the less preferred service provider until another frequency of the plurality of frequencies having a more preferred service provider is located, the examination being conducted by determining whether a last frequency used by the communication device has a more preferred service provider and if the last frequency does not have a more preferred service provider, then determining whether a home frequency of the communication device has a more preferred service provider, and 4) registering with the more preferred service provider, the method comprising: transmitting a code from the wireless service provider to the communication device, the code identifying the wireless service provider as a wireless service provider permitted to transmit modification information; and transmitting modification information from the permitted wireless service provider to the communication device for modifying the search schedule.
Claim 9
Independent Claim
198 words
A method of communicating between a communication device and a wireless service provider in a multi-service provider environment using a search schedule that is stored in the communication device and specifies a predetermined order of frequencies, the communication device: 1) receiving a plurality of frequencies, 2) associating with a less preferred service provider in a frequency of the plurality of frequencies, 3) examining the plurality of frequencies in the predetermined order specified by the search schedule while remaining associated with the less preferred service provider until another frequency of the plurality of frequencies having a more preferred service provider is located, the examination being conducted by determining whether a last frequency used by the communication device has a more preferred service provider and if the last frequency used does not have a more preferred service provider, then determining whether a home frequency of the communication device has a-more preferred service provider, and 4) registering with the more preferred service provider, the method comprising: transmitting modification information from the wireless service provider to the communication device for modifying the search schedule, the wireless service provider receiving confirmation information from the communication device that the modification information has been transmitted.
Claim 10
Independent Claim
198 words
A method of communicating between a communication device and a wireless service provider in a multi-service provider environment using a search schedule that is stored in the communication device and specifies a predetermined order of frequencies, the communication device: 1) receiving a plurality of frequencies, 2) associating with a less preferred service provider in a frequency of the plurality of frequencies, 3) examining the plurality of frequencies in the predetermined order specified by the search schedule while remaining associated with the less preferred service provider until another frequency of the plurality of frequencies having a more preferred service provider is located, the examination being conducted by determining whether a last frequency used by the communication device has a more preferred service provider and if the last frequency used does not have a more preferred service provider, then determining whether a home frequency of the communication device has a-more preferred service provider, and 4) registering with the more preferred service provider, the method comprising: transmitting modification information from the wireless service provider to the communication device for modifying the search schedule, the wireless service provider receiving confirmation information from the communication device that the modification information has been transmitted.
Claim 11
Dependent Claim
162 words
A communication device that locates a preferable wireless service provider in a multi-service provider environment using a search schedule stored in the communication device that specifies a predetermined order of frequencies, the communication device comprising: a transceiver that receives a plurality of frequencies; and a controller that: 1) associates with a less preferred service provider in a frequency of the plurality of frequencies, 2) examines the plurality of frequencies in the predetermined order specified by the search schedule while remaining associated with the less preferred service provider until another frequency of the plurality of frequencies having a more preferred service provider is located, the examination being conducted by determining whether a last frequency used by the communication device has a more preferred service provider and if the last frequency does not have a more preferred service provider, then determining whether a home frequency of the communication device has a more preferred service provider, and 3) registers with the more preferred service provider.
Claim 12
Dependent Claim
162 words
A communication device that locates a preferable wireless service provider in a multi-service provider environment using a search schedule stored in the communication device that specifies a predetermined order of frequencies, the communication device comprising: a transceiver that receives a plurality of frequencies; and a controller that: 1) associates with a less preferred service provider in a frequency of the plurality of frequencies, 2) examines the plurality of frequencies in the predetermined order specified by the search schedule while remaining associated with the less preferred service provider until another frequency of the plurality of frequencies having a more preferred service provider is located, the examination being conducted by determining whether a last frequency used by the communication device has a more preferred service provider and if the last frequency does not have a more preferred service provider, then determining whether a home frequency of the communication device has a more preferred service provider, and 3) registers with the more preferred service provider.
References Cited (Backward Citations)
US4788543A
Cited
US4903320A
Cited
US5101500A
Cited
US5276905A
Cited
US5040237A
Cited
US5203015A
Cited
EP0459344A1
Cited
EP0510322A2
Cited
GB2257334A
Cited
US5463675A
Cited
US5504803A
Cited
US5711001A
Cited
US5420908A
Cited
US5754952A
Cited
US5541977A
Cited
CA2115877A1
Cited
US5517677A
Cited
US5590397A
Cited
US5524135A
Cited
US5483684A
Cited
US5509052A
Cited
US5513242A
Cited
US5513247A
Cited
US5479484A
Cited
US5613208A
Cited
US5586338A
Cited
US5613204A
Cited
US5761618A
Cited
US5734980A
Cited
US5603084A
Cited
US5603084C1
Cited
US5768380A
Cited
US5790952A
Cited
US5734542A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-07-08 | 2006-01-07 | 2006-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-07-08 | 2010-01-07 | 2010-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-07-08 | 2014-01-07 | 2014-07-09 | $7700.00 | Window Closed / Lapsed |