US6490460B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Forward and reverse link power control using position and mobility information
Assignee: Qualcomm Inc
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Filing: 1998-12-01
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Granted: 2002-12-03
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Expires: 2018-12-01
Abstract
Abstract A method and apparatus for dynamically adjusting a power control loop that attempts to maintain either the transmit power of a signal sent from a base station to a mobile station or the signal to noise ratio of a signal sent from the mobile station to the base station above a minimum threshold. Location information that is representative of the distance and morphology between the mobile station and the base station is determined. The minimum threshold of the power control loop is then adjusted in accordance with the location information such that the minimum threshold varies as the distance and the morphology between the mobile station and the base station change. A transmitter sends the signal at a power level that is controlled by the power control loop with the adjusted minimum threshold.
Inventors
- 👤 Samir S. Soliman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:49
CPC Classifications
H; H04; H04W; H04W52/00; H04W52/04; H04W52/06; H04W52/12; H04W52/18; H04W52/28; H04W52/30; H04W52/36; H04W52/22; H04W52/226; H04W52/24; H04W52/282; H04W52/283
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
103 words
In a mobile station for use in a CDMA wireless communication system having at least one base station and characterized by a reverse links power control loop, a method comprising: identifying a current position of the mobile station; selecting at least one of an upper limit signal to noise ratio (SNR) and a lower limit SNR associated with the reverse link power control on the basis of the current position; identifying a current velocity of the mobile station; and dynamically adjusting the selected at least one of an upper limit SNR and the lower limit SNR on the basis of the current velocity.
Claim 2
Dependent Claim
103 words
In a mobile station for use in a CDMA wireless communication system having at least one base station and characterized by a reverse links power control loop, a method comprising: identifying a current position of the mobile station; selecting at least one of an upper limit signal to noise ratio (SNR) and a lower limit SNR associated with the reverse link power control on the basis of the current position; identifying a current velocity of the mobile station; and dynamically adjusting the selected at least one of an upper limit SNR and the lower limit SNR on the basis of the current velocity.
Claim 3
Dependent Claim
18 words
The method of claim 1 , wherein the selecting and dynamically adjusting is performed using pre-defined lookup tables.
Claim 4
Dependent Claim
41 words
The method of claim 1 , wherein a geographic cell is characterized by a plurality of different regions serviced by a base station, identifying a current position involves identifying a region in a geographic cell the mobile station is presently located.
Claim 5
Dependent Claim
18 words
The method of claim 1 , wherein the identifying of the current position is determined using differential GPS.
Claim 6
Dependent Claim
26 words
The method of claim 1 , wherein the identifying of the current position is determined using terrestrial base stations, alone or in combination with GPS information.
Claim 7
Dependent Claim
21 words
The method of claim 1 , wherein dynamically adjusting further involves using the current velocity to redefine a power adjustment step.
Claim 8
Dependent Claim
30 words
The method of claim 6 , wherein identifying current velocity is determined by modeling, using the current position and at least one of past positional measurements, map information, and filtering.
Claim 9
Dependent Claim
41 words
The method of claim 6 , wherein the redefining of the power adjustment step involves identifying a range of velocities including the current velocity, and determining an associated power adjustment step associated with the identified range using a pre-defined look-up table.
Claim 10
Dependent Claim
41 words
The method of claim 6 , wherein a geographic cell is characterized by plurality of different regions serviced by a base station, the identifying a current position involves identifying a region in a geographic cell the mobile station is presently located.
Claim 11
Dependent Claim
103 words
In a base station for use in a CDMA wireless communication system servicing at least one mobile station and characterized by a forward link power control loop, a method comprising: identifying a current position of the mobile station; selecting at least one of an upper limit signs to noise ratio (SNR) and a lower limit SNR associated with the forward link power control on the basis of the current position; identifying a current velocity of the mobile station; and dynamically adjusting the selected at least one of an upper limit SNR and the lower limit SNR on the basis of the current velocity.
Claim 12
Dependent Claim
103 words
In a base station for use in a CDMA wireless communication system servicing at least one mobile station and characterized by a forward link power control loop, a method comprising: identifying a current position of the mobile station; selecting at least one of an upper limit signs to noise ratio (SNR) and a lower limit SNR associated with the forward link power control on the basis of the current position; identifying a current velocity of the mobile station; and dynamically adjusting the selected at least one of an upper limit SNR and the lower limit SNR on the basis of the current velocity.
Claim 13
Dependent Claim
18 words
The method of claim 10 , wherein the selecting and dynamically adjusting is performed using predefined look-up tables.
Claim 14
Dependent Claim
40 words
The method of claim 10 , wherein a geographic cell is characterized by a plurality of different regions serviced by a base station, identifying a current position involves identifying a region in a geographic-cell the mobile station is presently located.
Claim 15
Dependent Claim
18 words
The method of claim 10 , wherein the identifying of the current position is determined using differential GPS.
Claim 16
Dependent Claim
26 words
The method of claim 10 , wherein the identifying of the current position is determined using terrestrial base stations, alone or in combination with CPS information.
Claim 17
Dependent Claim
21 words
The method of claim 10 , wherein dynamically adjusting further involves using the current velocity to redefine a power adjustment step.
Claim 18
Dependent Claim
30 words
The method of claim 15 , wherein identifying current velocity is determined by modeling, using the current position and at least one of past positional measurements, map information, and filtering.
Claim 19
Dependent Claim
41 words
The method of claim 15 , wherein the redefining of the power adjustment step involves identifying a range of velocities including the current velocity, and determining an associated power adjustment step associated with the identified range using a pre-defined look-up table.
Claim 20
Dependent Claim
41 words
The method of claim 15 , wherein a geographic cell is characterized by plurality of different regions serviced by a base station, the identifying a current position involves identifying a region in a geographic cell the mobile station is presently located.
Claim 21
Dependent Claim
108 words
A mobile station for use in a CDMA wireless communication system having at least one base station and characterized by a reverse link power control loop, comprising: means for identifying a current position of the mobile station; means for selecting at least one of an upper limit signal to noise ratio (SNR) and a lower limit SNR associated with the reverse link power control on the basis of the current position; means for identifying a current velocity of the mobile station; and means for dynamically adjusting the selected at least one of an upper limit SNR and the lower limit SNR on the basis of the current velocity.
Claim 22
Dependent Claim
108 words
A mobile station for use in a CDMA wireless communication system having at least one base station and characterized by a reverse link power control loop, comprising: means for identifying a current position of the mobile station; means for selecting at least one of an upper limit signal to noise ratio (SNR) and a lower limit SNR associated with the reverse link power control on the basis of the current position; means for identifying a current velocity of the mobile station; and means for dynamically adjusting the selected at least one of an upper limit SNR and the lower limit SNR on the basis of the current velocity.
Claim 23
Dependent Claim
107 words
A base station for use in a CDMA wirless communication system servicing least one mobile station and characterized by a forward link power control loop, comprising: means for identifying a current position of the mobile station; means for selecting at least one of an upper limit signal to noise ratio (SNR) and a lower limit SNR associated with the forward link power control on the basis of the current position; means for identifying a current velocity of the mobile station; and means for dynamically adjusting the selected at least one of an upper limit SNR and the lower limit SNR on the basis of the current velocity.
Claim 24
Dependent Claim
107 words
A base station for use in a CDMA wirless communication system servicing least one mobile station and characterized by a forward link power control loop, comprising: means for identifying a current position of the mobile station; means for selecting at least one of an upper limit signal to noise ratio (SNR) and a lower limit SNR associated with the forward link power control on the basis of the current position; means for identifying a current velocity of the mobile station; and means for dynamically adjusting the selected at least one of an upper limit SNR and the lower limit SNR on the basis of the current velocity.
Claim 25
Dependent Claim
99 words
A software readable media having instructions, operable by a mobile station serviced by a base station by way of a reverse link power control loop, for: identifying a current position of the mobile station; selecting at least one of an upper limit signal to noise ratio (SNR) and a lower limit SNR associated with the reverse link power control on the basis of the current position; identifying a current velocity of the mobile station; and dynamically adjusting the selected at least one of an upper limit SNR and the lower limit SNR on the basis of the current velocity.
Claim 26
Dependent Claim
99 words
A software readable media having instructions, operable by a mobile station serviced by a base station by way of a reverse link power control loop, for: identifying a current position of the mobile station; selecting at least one of an upper limit signal to noise ratio (SNR) and a lower limit SNR associated with the reverse link power control on the basis of the current position; identifying a current velocity of the mobile station; and dynamically adjusting the selected at least one of an upper limit SNR and the lower limit SNR on the basis of the current velocity.
Claim 27
Dependent Claim
100 words
A software readable media having instructions, operable by a CDMA station servicing at least one mobile station by way of a forward link power control loop, for: identifying a current position of the mobile station; selecting at least one of an upper limit signal to noise ratio (SNR) and a lower limit SNR associated with the forward link power control on the basis of the current position; identifying a current velocity of the mobile station; and dynamically adjusting the selected at least one of an upper limit SNR and the lower limit SNR on the basis of the current velocity.
Claim 28
Dependent Claim
100 words
A software readable media having instructions, operable by a CDMA station servicing at least one mobile station by way of a forward link power control loop, for: identifying a current position of the mobile station; selecting at least one of an upper limit signal to noise ratio (SNR) and a lower limit SNR associated with the forward link power control on the basis of the current position; identifying a current velocity of the mobile station; and dynamically adjusting the selected at least one of an upper limit SNR and the lower limit SNR on the basis of the current velocity.
References Cited (Backward Citations)
USRE37669E1
Cited
US5067171A
Cited
US5239667A
Cited
US5305468A
Cited
US5465399A
Cited
US5670964A
Cited
US5603096A
Cited
WO1996003813A1
Cited
US5594946A
Cited
US6035209A
Cited
WO1996031014A1
Cited
US5710981A
Cited
US5634206A
Cited
US5778030A
Cited
US5857155A
Cited
WO1998009384A1
Cited
US5924040A
Cited
US5896411A
Cited
US6181738B1
Cited
US6144841A
Cited
US6115580A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-12-02 | 2006-06-03 | 2006-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-12-02 | 2010-06-03 | 2010-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-12-02 | 2014-06-03 | 2014-12-03 | $7700.00 | Window Closed / Lapsed |