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Patent US6192245B1 successfully refreshed from Google Patents.
US6192245B1
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Method for determining handover in a multicellular communications system
Assignee: Google Technology Holdings LLC
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Filing: 1996-06-28
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Granted: 2001-02-20
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Expires: 2016-06-28
Abstract
Abstract A method for determining a handover for a mobile station (1) in a multicellular communication system having a serving cell (3), a plurality of neighboring cells (4,5), and at least one control cell where the cells include at least one macrocell (2) and a plurality of microcells. The method includes the steps of comparing the received signal of the control cell with a parameter value.
Inventors
- 👤 Philip Jones
- 👤 Howard Thomas
- 👤 Keith Essam
- 👤 Andrew Le Fleming
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:09
CPC Classifications
H; H04; H04W; H04W36/00; H04W36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
220 words
A method for determining handover for a mobile station in a multicellular communications system comprising at least one macrocell and a plurality of microcells and including a serving cell, at least one handover target cell and at least one control cell not being a handover target cell or the serving cell, the method comprising the steps of: (a) determining a handover target cell from the at least one handover target cells; (b) determining a control cell from the at least one control cells; (c) measuring a received signal strength at the mobile station from the handover target cell; d) comparing the received signal strength of the handover target cell with a threshold and when the threshold is exceeded; (e) setting a timer to expire at the end of time period T; (f) measuring a received signal strength at the mobile station from the control cell; (g) comparing the received signal strength from the control cell with the received signal strength from the handover target cell during time period T; and (h) if the strength of the received signal from the control cell exceeds that received from the target cell, effecting a handover to a macrocell, (i) if the strength of the signal received from the control cell does not exceed that from the target cell, repeating steps (a) to (g).
Claim 2
Independent Claim
220 words
A method for determining handover for a mobile station in a multicellular communications system comprising at least one macrocell and a plurality of microcells and including a serving cell, at least one handover target cell and at least one control cell not being a handover target cell or the serving cell, the method comprising the steps of: (a) determining a handover target cell from the at least one handover target cells; (b) determining a control cell from the at least one control cells; (c) measuring a received signal strength at the mobile station from the handover target cell; d) comparing the received signal strength of the handover target cell with a threshold and when the threshold is exceeded; (e) setting a timer to expire at the end of time period T; (f) measuring a received signal strength at the mobile station from the control cell; (g) comparing the received signal strength from the control cell with the received signal strength from the handover target cell during time period T; and (h) if the strength of the received signal from the control cell exceeds that received from the target cell, effecting a handover to a macrocell, (i) if the strength of the signal received from the control cell does not exceed that from the target cell, repeating steps (a) to (g).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-02-20 | 2004-08-21 | 2005-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-02-20 | 2008-08-21 | 2009-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-02-20 | 2012-08-21 | 2013-02-20 | $7700.00 | Window Closed / Lapsed |