US6317587B1
Expired / Lapsed
US
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Method and apparatus for performing fast power control in a mobile communication system
Assignee: Individual
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Filing: 1999-12-03
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Granted: 2001-11-13
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Expires: 2019-12-03
Abstract
Abstract A method and apparatus for controlling transmission power levels in a mobile communication system. The method provides for a closed-loop power control method. A mobile station provides information on the quality of the signal received from the base station, and the base station responds by adjusting the power allocated to that user in a shared base station signal. The transmission power is adjusted initially by a large increment and then ramped down at an increasingly decreasing rate. The mobile station also provides information to the base station as to its relative velocity and the base station adjusts its transmission power in accordance with this velocity information.
Inventors
- 👤 Edward G. Tiedemann, Jr.
- 👤 Joseph P. Odenwalder
- 👤 Charles E. Wheatley, III
- 👤 Roberto Padovani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:29
CPC Classifications
H; H04; H04W; H04W52/00; H04W52/04; H04W52/30; H04W52/36; H04W52/362; H04W52/06; H04W52/08; H04W52/18; H04W52/22; H04W52/228; H04W52/28; H04W52/282; H04W52/367; H04W52/38; H04W52/50; H04W52/20; H04W52/24; H04W52/247; H04W52/283; H04W52/54; H04W52/60
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
127 words
A method for controlling transmission power levels, comprising: (a) receiving a signal from a first station at a second station; and, (b) adjusting a transmission power level for the signal transmitted to the second station in accordance with the quality of the received signal; if the transmission power level is increased, adjusting a transmission power level for subsequently transmitted signals from the first station to the second station, comprising: (1) following a transmission power level increase, reducing the transmission power level at a first non-zero predetermined rate; and (2) reducing the transmit power level at a second non-zero predetermined rate following said first non-zero predetermined decrease if the received signal is reliably decoded, wherein the second non-zero predetermined rate is not equal to the first predetermined rate.
Claim 2
Independent Claim
127 words
A method for controlling transmission power levels, comprising: (a) receiving a signal from a first station at a second station; and, (b) adjusting a transmission power level for the signal transmitted to the second station in accordance with the quality of the received signal; if the transmission power level is increased, adjusting a transmission power level for subsequently transmitted signals from the first station to the second station, comprising: (1) following a transmission power level increase, reducing the transmission power level at a first non-zero predetermined rate; and (2) reducing the transmit power level at a second non-zero predetermined rate following said first non-zero predetermined decrease if the received signal is reliably decoded, wherein the second non-zero predetermined rate is not equal to the first predetermined rate.
Claim 3
Dependent Claim
27 words
The method in accordance with claim 1 , where if the transmission power level is increased in step (b), it is increased by at least 1 decibel.
Claim 4
Dependent Claim
28 words
The method in accordance with claim 2 , wherein the transmission power level is increased when an increase is requested by a mobile station corresponding to the signal.
Claim 5
Dependent Claim
19 words
The method in accordance with claim 1 , wherein decreases in transmission power occur at an exponentially decreasing rate.
Claim 6
Dependent Claim
18 words
The method in accordance with claim 1 , wherein increases in the transmission signal power are incremental increases.
Claim 7
Dependent Claim
72 words
The method in accordance with claim 1 , further consisting of the steps of: signaling the first station if a transmission power level increase or decrease is needed; determining if the signaled increase is needed due to a prolonged fading condition, wherein the prolonged fading condition is determined by examining patterns of a plurality of power control bits; and, increasing the transmission power level only if the prolonged fading condition is present.
Claim 8
Dependent Claim
58 words
The method in accordance with claim 1 , further consisting of the steps of: determining if the signaled increase is needed due to a prolonged fading condition, wherein the prolonged fading condition is determined by examining patterns of a plurality of power control bits; and, increasing the transmission power level only if the prolonged fading condition is present.
Claim 9
Dependent Claim
152 words
A digital signal processing apparatus comprising: a storage unit; a processor capable of executing commands and data to control transmission power levels by: (a) receiving a signal from a first station at a second station; and, (b) adjusting a transmission power level for the signal transmitted to the second station in accordance with the quality of the received signal; if the transmission power level is increased, adjusting a transmission power level for subsequently transmitted signals from the first station to the second station, comprising: (1) following a transmission power level increase, reducing the transmission power level at a first non-zero predetermined rate; and (2) reducing the transmit power level at a second non-zero predetermined rate following said first non-zero predetermined decrease if the received signal is reliably decoded, wherein the second non-zero predetermined rate is not equal to the first predetermined rate; and circuitry communicatively coupling the processor to the storage unit.
Claim 10
Dependent Claim
152 words
A digital signal processing apparatus comprising: a storage unit; a processor capable of executing commands and data to control transmission power levels by: (a) receiving a signal from a first station at a second station; and, (b) adjusting a transmission power level for the signal transmitted to the second station in accordance with the quality of the received signal; if the transmission power level is increased, adjusting a transmission power level for subsequently transmitted signals from the first station to the second station, comprising: (1) following a transmission power level increase, reducing the transmission power level at a first non-zero predetermined rate; and (2) reducing the transmit power level at a second non-zero predetermined rate following said first non-zero predetermined decrease if the received signal is reliably decoded, wherein the second non-zero predetermined rate is not equal to the first predetermined rate; and circuitry communicatively coupling the processor to the storage unit.
Claim 11
Dependent Claim
84 words
The apparatus in accordance with claim 8 , wherein the commands and data used to control the transmission power levels further consist of the steps of: signaling the first station if a transmission power level increase or decrease is needed; determining if the signaled increase is needed due to a prolonged fading condition, wherein the prolonged fading condition is determined by examining patterns of a plurality of power control bits; and, increasing the transmission power level only if the prolonged fading condition is present.
Claim 12
Dependent Claim
70 words
The apparatus in accordance with claim 8 , wherein the commands and data used to control the transmission power levels further consist of the steps of: determining if the signaled increase is needed due to a prolonged fading condition, wherein the prolonged fading condition is determined by examining patterns of a plurality of power control bits; and, increasing the transmission power level only if the prolonged fading condition is present.
Claim 13
Dependent Claim
68 words
The apparatus in accordance with claim 10 , wherein the commands and data used to control the transmission power levels further consist of the step of: determining a velocity of the first station; using the velocity of the first station at the second station to determine an anticipatory power adjustment; and making a transmission power level increase or decrease prior to receiving the signal from the first station.
Claim 14
Dependent Claim
34 words
The apparatus in accordance with claim 8 , wherein the second station includes a motion sensor, and wherein the motion sensor is used to determine if transmission power level increase needs to be increased.
Claim 15
Dependent Claim
48 words
The method in accordance with claim 8 , wherein the second station includes a sensor to determine any shift in the received signal from the first station, and wherein the shift in the received signal is used to determine if the transmission power level needs to be increased.
Claim 16
Dependent Claim
48 words
The method in accordance with claim 8 , wherein the second station includes a sensor to determine selected changes in the signal received from the first station, and wherein a change in the received signal is used to determine if the transmission power level needs to be increased.
Claim 17
Dependent Claim
52 words
The method in accordance with claim 10 , wherein the second station includes a sensor to determine changes in relative velocity of the stations by measuring the Doppler shift in a received pilot signal, and wherein the Doppler shift is used to determine if the transmission power level needs to be increased.
Claim 18
Dependent Claim
160 words
A digital signal processing apparatus comprising: a storage means for storing digital data and commands; a processor means capable of executing commands and data to control transmission power levels by: (a) receiving a signal from a first station at a second station; and, (b) adjusting a transmission power level for the signal transmitted to the second station in accordance with the quality of the received signal; if the transmission power level is increased, adjusting a transmission power level for subsequently transmitted signals from the first station to the second station, comprising: (1) following a transmission power level increase, reducing the transmission power level at a first non-zero predetermined rate; and (2) reducing the transmit power level at a second non-zero predetermined rate following said first non-zero predetermined decrease if the received signal is reliably decoded, wherein the second non-zero predetermined rate is not equal to the first predetermined rate; and circuitry means communicatively coupling the processor to the storage unit.
Claim 19
Dependent Claim
160 words
A digital signal processing apparatus comprising: a storage means for storing digital data and commands; a processor means capable of executing commands and data to control transmission power levels by: (a) receiving a signal from a first station at a second station; and, (b) adjusting a transmission power level for the signal transmitted to the second station in accordance with the quality of the received signal; if the transmission power level is increased, adjusting a transmission power level for subsequently transmitted signals from the first station to the second station, comprising: (1) following a transmission power level increase, reducing the transmission power level at a first non-zero predetermined rate; and (2) reducing the transmit power level at a second non-zero predetermined rate following said first non-zero predetermined decrease if the received signal is reliably decoded, wherein the second non-zero predetermined rate is not equal to the first predetermined rate; and circuitry means communicatively coupling the processor to the storage unit.
Claim 20
Dependent Claim
85 words
The apparatus in accordance with claim 16 , wherein the commands and data executed by the processor means to control the transmission power levels further consist of: signaling the first station if a transmission power level increase or decrease is needed; determining if the signaled increase is needed due to a prolonged fading condition, wherein the prolonged fading condition is determined by examining patterns of a plurality of power control bits; and, increasing the transmission power level only if the prolonged fading condition is present.
Claim 21
Dependent Claim
71 words
The apparatus in accordance with claim 16 , wherein the commands and data executed by the processor means to control the transmission power levels further consist of: determining if the signaled increase is needed due to a prolonged fading condition, wherein the prolonged fading condition is determined by examining patterns of a plurality of power control bits; and, increasing the transmission power level only if the prolonged fading condition is present.
Claim 22
Dependent Claim
69 words
The apparatus in accordance with claim 18 , wherein the commands and data executed by the processor means to control the transmission power levels further consist of: determining a velocity of the first station; using the velocity of the first station at the second station to determine an anticipatory power adjustment; and making a transmission power level increase or decrease prior to receiving the signal from the first station.
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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) | 2004-11-12 | 2005-05-14 | 2005-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-11-12 | 2009-05-14 | 2009-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-11-12 | 2013-05-14 | 2013-11-13 | $7700.00 | Window Closed / Lapsed |