US5963870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for switching between IS-95 forward power control and fast forward power control
Assignee: Nortel Networks Ltd
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Filing: 1997-09-17
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Granted: 1999-10-05
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Expires: 2017-09-17
Abstract
Abstract The power control process switches between IS-95 forward power control and fast forward power control using either speed or hand-off status information from the mobile radiotelephone. If the received information indicates either a slower speed or the number of communication links is less than a predetermined number, the fast forward power control process is used. If the received information indicates either a fast speed or the number of links is greater than or equal to the predetermined number (the radiotelephone is in a hand-off situation), the forward power control process is used.
Inventors
- 👤 Ashvin Chheda
- 👤 Michael S. Feeney
- 👤 Ahmad Jalali
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:29
CPC Classifications
H; H04; H04W; H04W52/00; H04W52/04; H04W52/06; H04W52/14; H04W52/143; H04W52/38; H04W52/40; H04W52/12; H04W52/18; H04W52/28; H04W52/282
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
69 words
A method for switching between forward power control and fast forward power control in a radiotelephone system comprising a plurality of base stations communicating with a radiotelephone, the method comprising the steps of: receiving speed information from the radiotelephone; if the speed information is above a predetermined threshold, using the forward power control; and if the speed information is below the predetermined threshold, using the fast forward power control.
Claim 2
Independent Claim
69 words
A method for switching between forward power control and fast forward power control in a radiotelephone system comprising a plurality of base stations communicating with a radiotelephone, the method comprising the steps of: receiving speed information from the radiotelephone; if the speed information is above a predetermined threshold, using the forward power control; and if the speed information is below the predetermined threshold, using the fast forward power control.
Claim 3
Dependent Claim
21 words
The method of claim 1 and further including the step of determining the speed information using a global positioning system receiver.
Claim 4
Dependent Claim
18 words
The method of claim 1 wherein the radiotelephone transmits the speed information over a reverse power control channel.
Claim 5
Independent Claim
92 words
A method for switching between forward power control and fast forward power control in a radiotelephone system comprising a plurality of base stations communicating with a radiotelephone over communication links, the method comprising the steps of: monitoring a hand-off status of the radiotelephone; if the hand-off status indicates that the number of communication links is greater than or equal to a predetermined threshold, using the forward power control; and if the hand-off status indicates that the number of communication links is less than the predetermined threshold, using the fast forward power control.
Claim 6
Independent Claim
92 words
A method for switching between forward power control and fast forward power control in a radiotelephone system comprising a plurality of base stations communicating with a radiotelephone over communication links, the method comprising the steps of: monitoring a hand-off status of the radiotelephone; if the hand-off status indicates that the number of communication links is greater than or equal to a predetermined threshold, using the forward power control; and if the hand-off status indicates that the number of communication links is less than the predetermined threshold, using the fast forward power control.
Claim 7
Independent Claim
142 words
A method for switching between a forward power control process and a fast forward power control process in a radiotelephone system comprising a plurality of base stations communicating with a radiotelephone, the method comprising the steps of: receiving information from the radiotelephone; if the received information is hand-off status indicating that the number of communication links is greater than or equal to a predetermined threshold, using the forward power control; if the received information is location information indicating that the number of communication links is less than the predetermined threshold, using the fast forward power control; if the received information is speed information indicating a speed greater than a predetermined speed threshold, using the forward power control process; and if the received information is speed information indicating a speed less than the predetermined speed threshold, using the fast forward power control process.
Claim 8
Independent Claim
142 words
A method for switching between a forward power control process and a fast forward power control process in a radiotelephone system comprising a plurality of base stations communicating with a radiotelephone, the method comprising the steps of: receiving information from the radiotelephone; if the received information is hand-off status indicating that the number of communication links is greater than or equal to a predetermined threshold, using the forward power control; if the received information is location information indicating that the number of communication links is less than the predetermined threshold, using the fast forward power control; if the received information is speed information indicating a speed greater than a predetermined speed threshold, using the forward power control process; and if the received information is speed information indicating a speed less than the predetermined speed threshold, using the fast forward power control process.
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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) | 2002-10-04 | 2003-04-05 | 2003-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-10-04 | 2007-04-05 | 2007-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-10-04 | 2011-04-05 | 2011-10-05 | $7700.00 | Window Closed / Lapsed |