Patent US6731606B2 successfully refreshed from Google Patents.
US6731606B2
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Power control outer loop for communication channels with discontinuous transmission (DTX)
Assignee: Qualcomm Inc
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Filing: 2002-01-31
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Granted: 2004-05-04
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Expires: 2022-01-31
Abstract
Abstract Novel techniques are disclosed for adjusting a power control setpoint to compensate for imperfect signal detection in a communication channel capable of discontinuous transmission (DTX). The power control setpoint is compensated for false detections by adjusting the power control setpoint by a dynamically determined setpoint back off amount upon detection of a Good frame. The amount of the setpoint back off is a function of the measured signal quality of the detected Good frame and the number of Erasure indications received immediately preceding the Good frame indication.
Inventors
- 👤 Yu-Chuan Lin
- 👤 Keith W. Saints
- 👤 Steven Yoon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:58
CPC Classifications
H; H04; H04W; H04W52/00; H04W52/04; H04W52/06; H04W52/12; H04W52/18; H04W52/20; H04W52/22; H04W52/225; H04W52/26; H04W52/28; H04W52/287; H04W52/38; H04W52/44
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
55 words
In a communication device having discontinuous transmission (DTX) detection, a method of providing outer loop power control comprising: estimating a number of erroneous frame detections; and adjusting a power control setpoint associated with the outer loop power control wherein the adjustment is determined at least in part by the estimated number of erroneous frame detections.
Claim 2
Dependent Claim
55 words
In a communication device having discontinuous transmission (DTX) detection, a method of providing outer loop power control comprising: estimating a number of erroneous frame detections; and adjusting a power control setpoint associated with the outer loop power control wherein the adjustment is determined at least in part by the estimated number of erroneous frame detections.
Claim 3
Dependent Claim
14 words
The method of claim 1 , wherein the erroneous frame detections are Erasure detections.
Claim 4
Dependent Claim
27 words
The method of claim 1 , further comprising detecting a Good frame and wherein adjusting the power control setpoint occurs in response to detecting the Good frame.
Claim 5
Dependent Claim
25 words
The method of claim 3 , wherein the number of erroneous frame detections is a number of Erasure detections occurring between successive Good frame detections.
Claim 6
Dependent Claim
28 words
The method of claim 4 , wherein the adjustment to the power control setpoint is zero if the number of Erasure detections is less than a predetermined threshold.
Claim 7
Dependent Claim
13 words
The method of claim 5 , wherein the predetermined threshold is a constant.
Claim 8
Dependent Claim
12 words
The method of claim 5 , wherein the predetermined threshold is 10.
Claim 9
Dependent Claim
70 words
The method of claim 1 , wherein adjusting the power control setpoint comprises: setting the power control setpoint to the maximum of a predetermined minimum setpoint value and a current setpoint value, if the number of erroneous frame detections equals or exceeds a predetermined threshold; and setting the power control setpoint to the current setpoint value, if the number of erroneous frame detections is less than the predetermined threshold value.
Claim 10
Dependent Claim
18 words
The method of claim 1 , wherein the outer loop power control is reverse outer loop power control.
Claim 11
Dependent Claim
18 words
The method of claim 1 , wherein the outer loop power control is forward outer loop power control.
Claim 12
Dependent Claim
27 words
The method of claim 1 , wherein the communication device is one of a CDMA base station, a CDMA base station controller, and a CDMA mobile station.
Claim 13
Dependent Claim
100 words
In a communication device having discontinuous transmission (DTX) detection, a method of providing outer loop power control comprising: estimating a number of erroneous frame detections; adjusting a power control setpoint associated with the outer loop power control wherein the adjustment is determined at least in part by the estimated number of erroneous frame detections; and detecting a Good frame wherein adjusting the power control setpoint occurs in response to detecting the Good frame and wherein the power control setpoint is adjusted to equal the minimum of a historic setpoint, and a Signal to Noise Ratio (SNR) plus a predetermined margin.
Claim 14
Dependent Claim
100 words
In a communication device having discontinuous transmission (DTX) detection, a method of providing outer loop power control comprising: estimating a number of erroneous frame detections; adjusting a power control setpoint associated with the outer loop power control wherein the adjustment is determined at least in part by the estimated number of erroneous frame detections; and detecting a Good frame wherein adjusting the power control setpoint occurs in response to detecting the Good frame and wherein the power control setpoint is adjusted to equal the minimum of a historic setpoint, and a Signal to Noise Ratio (SNR) plus a predetermined margin.
Claim 15
Dependent Claim
13 words
The method of claim 12 , wherein the SNR is a measure value.
Claim 16
Dependent Claim
21 words
The method of claim 12 , wherein the SNR is a E b /N t value of the detected Good frame.
Claim 17
Dependent Claim
25 words
The method of claim 12 , wherein the current setpoint and SNR are in units of dB and the predetermined margin is substantially 2 dB.
Claim 18
Dependent Claim
99 words
In a communication device having discontinuous transmission (DTX) detection, a method of providing outer loop power control comprising: estimating a number of erroneous Erasure detections; detecting a Good frame; and in response to detecting the Good frame indication, adjusting a power control setpoint associated with the outer loop power control wherein the adjustment comprises: detecting a frame sequence number in the detected Good frame; and setting the setpoint to a dynamically determined setpoint backoff value determined in part on the estimated number of Erasure detections if the frame sequence number is not continuous with a prior frame sequence number.
Claim 19
Dependent Claim
99 words
In a communication device having discontinuous transmission (DTX) detection, a method of providing outer loop power control comprising: estimating a number of erroneous Erasure detections; detecting a Good frame; and in response to detecting the Good frame indication, adjusting a power control setpoint associated with the outer loop power control wherein the adjustment comprises: detecting a frame sequence number in the detected Good frame; and setting the setpoint to a dynamically determined setpoint backoff value determined in part on the estimated number of Erasure detections if the frame sequence number is not continuous with a prior frame sequence number.
Claim 20
Dependent Claim
55 words
A wireless communication device having discontinuous transmission (DTX) detection and outer loop power control comprising: means for estimating a number of erroneous frame detections; and means for adjusting a power control setpoint associated with the outer loop power control wherein the adjustment is determined at least in part by the number of erroneous frame detections.
Claim 21
Dependent Claim
55 words
A wireless communication device having discontinuous transmission (DTX) detection and outer loop power control comprising: means for estimating a number of erroneous frame detections; and means for adjusting a power control setpoint associated with the outer loop power control wherein the adjustment is determined at least in part by the number of erroneous frame detections.
Claim 22
Dependent Claim
14 words
The device of claim 17 , wherein the erroneous frame detections are Erasure detections.
Claim 23
Dependent Claim
33 words
The device of claim 17 , further comprising means for detecting a Good frame and wherein the means for adjusting the power control setpoint responds to the means for detecting the Good frame.
Claim 24
Dependent Claim
29 words
The device of claim 19 , wherein the means for estimating the number of erroneous frame detections counts a number of Erasure detections occurring between successive Good frame detections.
Claim 25
Dependent Claim
28 words
The device of claim 20 , wherein the adjustment to the power control setpoint is zero if the number of Erasure detections is less than a predetermined threshold.
Claim 26
Dependent Claim
13 words
The device of claim 21 , wherein the predetermined threshold is a constant.
Claim 27
Dependent Claim
12 words
The device of claim 21 , wherein the predetermined threshold is 10.
Claim 28
Dependent Claim
77 words
The device of claim 17 , wherein the means for adjusting the power control setpoint comprises: means for setting the power control setpoint to the maximum of a predetermined minimum setpoint value and a current setpoint value if the number of erroneous frame detections equals or exceeds a predetermined threshold; and means for setting the power control setpoint to the current setpoint value if the number of erroneous frame detections is less than the predetermined threshold value.
Claim 29
Dependent Claim
18 words
The device of claim 17 , wherein the outer loop power control is reverse outer loop power control.
Claim 30
Dependent Claim
18 words
The device of claim 17 , wherein the outer loop power control is forward outer loop power control.
Claim 31
Dependent Claim
28 words
The device of claim 17 , wherein the wireless communication device is one of a CDMA base station, a CDMA base station controller, and a CDMA mobile station.
Claim 32
Dependent Claim
113 words
A wireless communication device having discontinuous transmission (DTX) detection and outer loop power control comprising: means for estimating a number of erroneous frame detections; means for adjusting a power control setpoint associated with the outer loop power control wherein the adjustment is determined at least in part by the number of erroneous frame detections; and means for detecting a Good frame and wherein the means for adjusting the power control setpoint responds to the means for detecting the Good frame, wherein the means for adjusting the power control setpoint adjusts the power control setpoint to equal the minimum of a historic setpoint, and a Signal to Noise Ratio (SNR) plus a predetermined margin.
Claim 33
Dependent Claim
113 words
A wireless communication device having discontinuous transmission (DTX) detection and outer loop power control comprising: means for estimating a number of erroneous frame detections; means for adjusting a power control setpoint associated with the outer loop power control wherein the adjustment is determined at least in part by the number of erroneous frame detections; and means for detecting a Good frame and wherein the means for adjusting the power control setpoint responds to the means for detecting the Good frame, wherein the means for adjusting the power control setpoint adjusts the power control setpoint to equal the minimum of a historic setpoint, and a Signal to Noise Ratio (SNR) plus a predetermined margin.
Claim 34
Dependent Claim
13 words
The device of claim 24 , wherein the SNR is a measured value.
Claim 35
Dependent Claim
21 words
The device of claim 24 , wherein the SNR is a E b /N t value of the detected good frame.
Claim 36
Dependent Claim
25 words
The device of claim 24 , wherein the current setpoint and SNR are in units of dB and the predetermined margin is substantially 2 dB.
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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) | 2007-05-04 | 2007-11-03 | 2008-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-05-04 | 2011-11-03 | 2012-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-05-04 | 2015-11-03 | 2016-05-04 | $7700.00 | Window Closed / Lapsed |