Patent US5822318A successfully refreshed from Google Patents.
US5822318A
Expired / Lapsed
US
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Method and apparatus for controlling power in a variable rate communication system
Assignee: Qualcomm Inc
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Filing: 1994-07-29
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Granted: 1998-10-13
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Expires: 2014-07-29
Abstract
Abstract A method and apparatus for controlling transmission power in a variable rate communication system is disclosed. The method disclosed provides for a closed loop power control method. A first remote station controls the transmission power of a second remote station by transmitting a rate dependent power control signal to the second remote communication station. Since only the second communication knows its transmission rate a priori, it must determine its course of action in accordance with both the received power control signal and the knowledge of its transmission rate.
Inventors
- 👤 Edward G. Tiedemann, Jr.
- 👤 Klein S. Gilhousen
- 👤 Joseph P. Odenwalder
- 👤 Ephraim Zehavi
- 👤 Jeffrey A. Levin
- 👤 Charles E. Wheatley, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:07
CPC Classifications
H; H04; H04W; H04W52/00; H04W52/04; H04W52/18; H04W52/24; H04W52/26; H04W52/265; H04L; H04L1/00; H04L1/0001; H04L1/0002; H04L1/0014; H04L1/0015; H04L1/0019; H04L1/0021; H04L1/0023; H04L1/0025; H04L1/08; H04W52/267
Claims Analysis
Total Claims: 68
Claim 1
Independent Claim
187 words
In a variable rate communication system wherein a first communication device for the transmission of a data packet of variable rate data in a data frame of a predetermined data capacity to a second communication device wherein when said data packet is less than said data capacity generating repeated versions of bits in said data packet and providing first version of said data packet bits and said repeated versions of said data packet bits in said data frame and wherein in the transmission power for transmitting said data frame is scaled in accordance with the data rate of said variable rate data, an apparatus for controlling said transmission power of said first communication device at said second communication device comprising: receiver means for receiving said data frame; frame quality determination means for determining a frame quality factor from said data frame; comparison means for comparing said frame quality factor against a plurality of threshold values to provide a quality signal in accordance with said data rate and wherein each of said threshold values corresponds to a different data rate; and transmitter means for transmitting said quality signal.
Claim 2
Dependent Claim
187 words
In a variable rate communication system wherein a first communication device for the transmission of a data packet of variable rate data in a data frame of a predetermined data capacity to a second communication device wherein when said data packet is less than said data capacity generating repeated versions of bits in said data packet and providing first version of said data packet bits and said repeated versions of said data packet bits in said data frame and wherein in the transmission power for transmitting said data frame is scaled in accordance with the data rate of said variable rate data, an apparatus for controlling said transmission power of said first communication device at said second communication device comprising: receiver means for receiving said data frame; frame quality determination means for determining a frame quality factor from said data frame; comparison means for comparing said frame quality factor against a plurality of threshold values to provide a quality signal in accordance with said data rate and wherein each of said threshold values corresponds to a different data rate; and transmitter means for transmitting said quality signal.
Claim 3
Dependent Claim
45 words
The apparatus of claim 1 wherein in said data rate is of a set of N possible data rates, and wherein said comparison means is for comparing said quality factor against N threshold values and generating a signal indicative of one of N+1 quality signals.
Claim 4
Dependent Claim
20 words
The apparatus of claim 1 wherein said comparison means is for comparing said quality factor against temporally varying threshold values.
Claim 5
Dependent Claim
51 words
The apparatus of claim 3 wherein said data rate is selected from a set of data rates and wherein said temporally varying thresholds represent a first predetermined subset of possible thresholds during a first power control cycle and a second predetermined subset of possible thresholds during a second power control cycle.
Claim 6
Dependent Claim
17 words
The apparatus of claim 3 wherein said plurality of threshold values can be adjusted at each frame.
Claim 7
Dependent Claim
23 words
The apparatus of claim 3 wherein said plurality of threshold values are adjusted based on said frame quality factor from said data frame.
Claim 8
Dependent Claim
20 words
The apparatus of claim 1 further comprising rate determination means for determining said data rate from said received data frame.
Claim 9
Dependent Claim
33 words
The apparatus of claim 7 wherein said rate determination means is for separating a rate indication signal from said data frame and determining said data rate in accordance with said rate indication signal.
Claim 10
Dependent Claim
22 words
The apparatus of claim 7 wherein said comparison means is further for determining said comparison threshold in accordance with said rate determination.
Claim 11
Dependent Claim
44 words
The apparatus of claim 1 further comprising an encoding means interposed between said comparison means and said transmitter means for receiving said quality signal and traffic data and for combining said traffic data with said quality signal in accordance with a predetermined combination format.
Claim 12
Dependent Claim
20 words
The apparatus of claim 10 wherein said predetermined combination format overwrites portions of said traffic data with said quality signal.
Claim 13
Dependent Claim
21 words
The apparatus of claim 10 wherein said predetermined combination format provides said quality signal in predetermined gaps in said traffic data.
Claim 14
Dependent Claim
15 words
The apparatus of claim 11 wherein said frame quality factor is indicative of received power.
Claim 15
Dependent Claim
15 words
The apparatus of claim 1 wherein said frame quality factor is indicative of error rate.
Claim 16
Dependent Claim
23 words
The apparatus of claim 1 wherein said comparison means compares said frame quality indicator over a measurement interval corresponding to said data rate.
Claim 17
Dependent Claim
24 words
The apparatus of claim 1 wherein said comparison means generates relative quality signals for power control groups subsequent to a reference power control group.
Claim 18
Dependent Claim
20 words
The apparatus of claim 16 wherein said reference power control group is a first power control group of each frame.
Claim 19
Dependent Claim
14 words
The apparatus of claim 16 wherein said relative quality signals each comprises one bit.
Claim 20
Dependent Claim
25 words
The apparatus of claim 1 further comprising: adjustment means for adjusting said transmission power of said first communication device in accordance with said quality signal.
Claim 21
Dependent Claim
22 words
The apparatus of claim 19 wherein said adjustment means adjusts said transmission power at one of a plurality of power adjustment steps.
Claim 22
Dependent Claim
30 words
The apparatus of claim 1 wherein said transmitter means modulates said quality signal using a modulation format different than a modulation format for traffic data from said second communication device.
Claim 23
Dependent Claim
17 words
The apparatus of claim 21 wherein said modulation format for said quality signal is M-ary phase modulation.
Claim 24
Dependent Claim
18 words
The apparatus of claim 21 wherein said modulation format for said quality signal is quaternary phase shift keying.
Claim 25
Dependent Claim
169 words
In a variable rate communication system wherein a first communication device for the transmission of a data packet of variable rate data in a data frame of a predetermined data capacity to a second communication device wherein when said data packet is less than said data capacity generating repeated versions of bits in said data packet and providing first version of said data packet bits and said repeated versions of said data packet bits in said data frame and wherein in the transmission power for transmitting said data frame is scaled in accordance with the data rate of said variable rate data, a method for controlling said transmission power of said first communication device at said second communication device comprising the steps of: receiving said data frame; determining a frame quality factor from said data frame; comparing said quality factor against a plurality of threshold values wherein each threshold corresponds to different data rate; generating a quality signal in accordance with said data rate; and transmitting said quality signal.
Claim 26
Dependent Claim
169 words
In a variable rate communication system wherein a first communication device for the transmission of a data packet of variable rate data in a data frame of a predetermined data capacity to a second communication device wherein when said data packet is less than said data capacity generating repeated versions of bits in said data packet and providing first version of said data packet bits and said repeated versions of said data packet bits in said data frame and wherein in the transmission power for transmitting said data frame is scaled in accordance with the data rate of said variable rate data, a method for controlling said transmission power of said first communication device at said second communication device comprising the steps of: receiving said data frame; determining a frame quality factor from said data frame; comparing said quality factor against a plurality of threshold values wherein each threshold corresponds to different data rate; generating a quality signal in accordance with said data rate; and transmitting said quality signal.
Claim 27
Dependent Claim
30 words
The apparatus of claim 24 wherein said step of comparing said frame quality factor against said plurality of threshold values comprises comparing said quality factor against temporally varying threshold values.
Claim 28
Dependent Claim
17 words
The method of claim 25 wherein said plurality of threshold values can be adjusted at each frame.
Claim 29
Dependent Claim
23 words
The method of claim 25 wherein said plurality of threshold values are adjusted based on said frame quality factor from said data frame.
Claim 30
Dependent Claim
19 words
The method of claim 24 further comprising the step of determining said data rate from said received data frame.
Claim 31
Dependent Claim
31 words
The method of claim 28 further comprising the step of separating a rate indication signal from said data frame and determining said data rate in accordance with said rate indication signal.
Claim 32
Dependent Claim
20 words
The method of claim 28 further comprising the step of determining said comparison threshold in accordance with said rate determination.
Claim 33
Dependent Claim
38 words
The method of claim 24 wherein a traffic data and said quality signal are combined in accordance with a predetermined combination format and wherein said predetermined combination format overwrites portions of said traffic data with said quality signal.
Claim 34
Dependent Claim
39 words
The method of claim 24 wherein a traffic data and said quality signal are combined in accordance with a predetermined combination format and wherein said predetermined combination format provides said quality signal in predetermined gaps in said traffic data.
Claim 35
Dependent Claim
15 words
The method of claim 24 wherein said frame quality factor is indicative of received power.
Claim 36
Dependent Claim
15 words
The method of claim 24 wherein said frame quality factor is indicative of error rate.
Claim 37
Dependent Claim
20 words
The method of claim 24 wherein said comparing step is performed over a measurement interval corresponding to said data rate.
Claim 38
Dependent Claim
24 words
The method of claim 24 wherein said generating step generates relative quality signals for power control groups subsequent to a reference power control group.
Claim 39
Dependent Claim
20 words
The method of claim 36 wherein said reference power control group is a first power control group of each frame.
Claim 40
Dependent Claim
14 words
The method of claim 36 wherein said relative quality signals each comprises one bit.
Claim 41
Dependent Claim
25 words
The method of claim 24 further comprising the step of: adjusting said transmission power of said first communication device in accordance with said quality signal.
Claim 42
Dependent Claim
20 words
The method of claim 39 wherein said adjusting step is performed at one of a plurality of power adjustment steps.
Claim 43
Dependent Claim
28 words
The method of claim 24 wherein said transmitting step is performed using a modulation format different than a modulation format for traffic data from said second communication device.
Claim 44
Dependent Claim
17 words
The method of claim 41 wherein said modulation format for said quality signal is M-ary phase modulation.
Claim 45
Dependent Claim
18 words
The method of claim 41 wherein said modulation format for said quality signal is quaternary phase shift keying.
Claim 46
Dependent Claim
188 words
In a variable rate communication system wherein a first communication device for the transmission of a data packet of variable rate data in a data frame of a predetermined data capacity to a second communication device wherein when said data packet is less than said data capacity generating repeated versions of bits in said data packet and providing first version of said data packet bits and said repeated versions of said data packet bits in said data frame and wherein in the transmission power for transmitting said data frame is scaled in accordance with the data rate of said variable rate data, a system for controlling said transmission power of said first communication device at said second communication device comprising: a receiver for receiving said data frame; a frame quality measurement circuit for determining a frame quality factor from said data frame; a comparer for comparing said frame quality factor against a plurality of threshold values to provide a quality signal in accordance with said data rate and wherein each of said threshold values corresponds to a different data rate; and a transmitter for transmitting said quality signal.
Claim 47
Dependent Claim
188 words
In a variable rate communication system wherein a first communication device for the transmission of a data packet of variable rate data in a data frame of a predetermined data capacity to a second communication device wherein when said data packet is less than said data capacity generating repeated versions of bits in said data packet and providing first version of said data packet bits and said repeated versions of said data packet bits in said data frame and wherein in the transmission power for transmitting said data frame is scaled in accordance with the data rate of said variable rate data, a system for controlling said transmission power of said first communication device at said second communication device comprising: a receiver for receiving said data frame; a frame quality measurement circuit for determining a frame quality factor from said data frame; a comparer for comparing said frame quality factor against a plurality of threshold values to provide a quality signal in accordance with said data rate and wherein each of said threshold values corresponds to a different data rate; and a transmitter for transmitting said quality signal.
Claim 48
Dependent Claim
44 words
The apparatus of claim 44 wherein in said data rate is of a set of N possible data rates, and wherein said comparer is for comparing said quality factor against N threshold values and generating a signal indicative of one of N+1 quality signals.
Claim 49
Dependent Claim
19 words
The system of claim 44 further comprising rate estimator for estimating said data rate from said received data frame.
Claim 50
Dependent Claim
32 words
The system of claim 46 wherein said rate estimator is for separating a rate indication signal from said data frame and determining said data rate in accordance with said rate indication signal.
Claim 51
Dependent Claim
41 words
The system of claim 44 further comprising an encoder interposed between said comparer and said transmitter for receiving said quality signal and traffic data and for combining said traffic data with said quality signal in accordance with a predetermined combination format.
Claim 52
Dependent Claim
20 words
The system of claim 48 wherein said predetermined combination format overwrites portions of said traffic data with said quality signal.
Claim 53
Dependent Claim
21 words
The system of claim 48 wherein said predetermined combination format provides said quality signal in predetermined gaps in said traffic data.
Claim 54
Dependent Claim
15 words
The system of claim 44 wherein said frame quality factor is indicative of received power.
Claim 55
Dependent Claim
15 words
The system of claim 44 wherein said frame quality factor is indicative of error rate.
Claim 56
Dependent Claim
19 words
The system of claim 44 wherein said comparer is for comparing said quality factor against temporally varying threshold values.
Claim 57
Dependent Claim
51 words
The apparatus of claim 53 wherein said data rate is selected from a set of data rates and wherein said temporally varying thresholds represent a first predetermined subset of possible thresholds during a first power control cycle and a second predetermined subset of possible thresholds during a second power control cycle.
Claim 58
Dependent Claim
17 words
The system of claim 53 wherein said plurality of threshold values can be adjusted at each frame.
Claim 59
Dependent Claim
23 words
The system of claim 53 wherein said plurality of threshold values are adjusted based on said frame quality factor from said data frame.
Claim 60
Dependent Claim
22 words
The system of claim 44 wherein said comparer compares said frame quality indicator over a measurement interval corresponding to said data rate.
Claim 61
Dependent Claim
23 words
The system of claim 44 wherein said comparer generates relative quality signals for power control groups subsequent to a reference power control group.
Claim 62
Dependent Claim
20 words
The system of claim 58 wherein said reference power control group is a first power control group of each frame.
Claim 63
Dependent Claim
14 words
The system of claim 58 wherein said relative quality signals each comprises one bit.
Claim 64
Dependent Claim
30 words
The system of claim 44 further comprising: a transmitter at said first communication device for adjusting said transmission power of said first communication device in accordance with said quality signal.
Claim 65
Dependent Claim
25 words
The system of claim 61 wherein said transmission power of said first communication device is adjusted at one of a plurality of power adjustment steps.
Claim 66
Dependent Claim
29 words
The system of claim 44 wherein said transmitter modulates said quality signal using a modulation format different than a modulation format for traffic data from said second communication device.
Claim 67
Dependent Claim
17 words
The system of claim 63 wherein said modulation format for said quality signal is M-ary phase modulation.
Claim 68
Dependent Claim
18 words
The system of claim 63 wherein said modulation format for said quality signal is quaternary phase shift keying.
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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) | 2001-10-12 | 2002-04-13 | 2002-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-10-12 | 2006-04-13 | 2006-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-10-12 | 2010-04-13 | 2010-10-13 | $7700.00 | Window Closed / Lapsed |