US6112089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and system for increasing capacity and improving performance of a cellular network
Assignee: Apple Inc
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Filing: 1999-04-09
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Granted: 2000-08-29
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Expires: 2019-04-09
Abstract
Abstract A method and system for increasing capacity and improving performance of a cellular network. The method includes maintaining and analyzing matrices of a cell in the network. Once matrix stores performance values and statistics concerning the cell and optimizing conditions for handoff from the cell in response to the performance values. Another matrix stores status values and statistics concerning the cell and optimizing conditions for handoff in response to the status values. A third matrix stores information about cells that should be considered as potential handoff cells.
Inventors
- 👤 Prasanna Jayaraj Satarasinghe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:43
CPC Classifications
H; H04; H04W; H04W36/00; H04W36/0005; H04W36/0083; H04W36/00835; H04W36/0085; H04W36/16; H04W36/18
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
94 words
A method of optimizing a first list of potential handoff cells for a dominant cell of a cellular telephone network, the method comprising: maintaining dynamically on a per call basis a second list of cells that are not in the first list but have had their pilot signals reported by a mobile unit operating in the dominant cell; tracking a signal strength for the reported pilot signals of the cells in the second list; and tracking a number of times that the pilot signals have been reported for the cells in the second list.
Claim 2
Independent Claim
94 words
A method of optimizing a first list of potential handoff cells for a dominant cell of a cellular telephone network, the method comprising: maintaining dynamically on a per call basis a second list of cells that are not in the first list but have had their pilot signals reported by a mobile unit operating in the dominant cell; tracking a signal strength for the reported pilot signals of the cells in the second list; and tracking a number of times that the pilot signals have been reported for the cells in the second list.
Claim 3
Dependent Claim
43 words
The method of claim 1 wherein, after a period of time, the tracked signal strength and tracked number of times for each pilot signal of the second list is analyzed to determine whether the corresponding cell should be included in the first list.
Claim 4
Independent Claim
129 words
A system for optimizing a first list of potential handoff cells for a dominant cell of a cellular telephone network, the system comprising: a second list of cells maintained dynamically on a per call basis that are not in the first list but have had their pilot signals reported by a mobile unit operating in the dominant cell; means for tracking a signal strength for the reported pilot signals of the cells in the second list; means for tracking a number of times that the pilot signals have been reported for the cells in the second list; and means for analyzing the tracked signal strength and tracked number of times for each cell of the second list to determine whether that cell should be included in the first list.
Claim 5
Independent Claim
129 words
A system for optimizing a first list of potential handoff cells for a dominant cell of a cellular telephone network, the system comprising: a second list of cells maintained dynamically on a per call basis that are not in the first list but have had their pilot signals reported by a mobile unit operating in the dominant cell; means for tracking a signal strength for the reported pilot signals of the cells in the second list; means for tracking a number of times that the pilot signals have been reported for the cells in the second list; and means for analyzing the tracked signal strength and tracked number of times for each cell of the second list to determine whether that cell should be included in the first list.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-08-29 | 2004-02-28 | 2004-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-08-29 | 2008-02-28 | 2008-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-08-29 | 2012-02-28 | 2012-08-29 | $7700.00 | Window Closed / Lapsed |