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US6285682B1
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Method and apparatus for determining the frame rate of a frame
Assignee: Google Technology Holdings LLC
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Filing: 2000-05-01
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Granted: 2001-09-04
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Expires: 2020-05-01
Abstract
Abstract Because prior-art rate determination algorithms are prone to falsing, a sub-rate discrimination metric generator (160) is provided herein. The generator (160) correlates a received frame with known characteristics of sub-rate frames to generate additional metrics useful in rate determination. These metrics are passed to a modified rate determination algorithm (150).
Inventors
- 👤 Lee M. Proctor
- 👤 Mark D. Hetherington
- 👤 Nai Sum Wong
- 👤 William K. Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:49
CPC Classifications
H; H04; H04L; H04L25/00; H04L25/02; H04L25/0262; H04L41/00; H04L41/50; H04L41/5003; H04L41/5009; H04L1/00; H04L1/004; H04L1/0045; H04L1/0046; H04W; H04W28/00; H04W28/16; H04W28/18; H04W28/22
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
79 words
A method for determining a frame rate from a set of possible frame rates for a frame received in a communication system, the method comprising the steps of: receiving the frame; segmenting the frame into a set of segments; determining a confidence level that symbols within a segment of the set of segments were originally transmitted with the same polarity; comparing the confidence level with a threshold; and determining the frame rate for the frame based on the comparison.
Claim 2
Independent Claim
79 words
A method for determining a frame rate from a set of possible frame rates for a frame received in a communication system, the method comprising the steps of: receiving the frame; segmenting the frame into a set of segments; determining a confidence level that symbols within a segment of the set of segments were originally transmitted with the same polarity; comparing the confidence level with a threshold; and determining the frame rate for the frame based on the comparison.
Claim 3
Dependent Claim
45 words
The method of claim 1 , wherein the step of determining the frame rate comprises the step of determining a frame rate from a set of possible frame rates, wherein the set of possible frame rates consists of full rate, half rate and eighth rate.
Claim 4
Dependent Claim
45 words
The method of claim 1 , wherein the step of segmenting the frame into the set of segments comprises the step of segmenting the frame into the set of segments wherein a size of a segment within the set is based on the frame rate.
Claim 5
Dependent Claim
19 words
The method of claim 3 , wherein the frame rate is eighth rate and the segment size is 8.
Claim 6
Dependent Claim
20 words
The method of claim 3 , wherein the first frame rate is half rate and the segment size is 2.
Claim 7
Dependent Claim
35 words
The method of claim 1 , wherein a number of segments in the a set of segments is dependent, at least in part, on a a frame rate from a set of possible frame rates.
Claim 8
Dependent Claim
21 words
The method of claim 6 , wherein the a frame rate is eighth rate and the number of segments is 48.
Claim 9
Dependent Claim
21 words
The method of claim 6 , wherein the a frame rate is half rate and the number of segments is 192.
Claim 10
Dependent Claim
25 words
The method of claim 1 , wherein the a confidence level is determined by accumulating a number of received valid symbols with a same polarity.
Claim 11
Dependent Claim
20 words
The method of claim 9 , wherein received symbols known to be power control information symbols are deemed invalid symbols.
Claim 12
Dependent Claim
22 words
The method of claim 3 , wherein the threshold is dependent on a number of power control information symbols in the segment.
Claim 13
Dependent Claim
30 words
The method of claim 11 , wherein the frame rate is eighth rate and the threshold is 7 minus the number of power control information symbols in the first segment.
Claim 14
Dependent Claim
30 words
The method of claim 11 , wherein the frame rate is half rate and the threshold is 2 minus the number of power control information symbols in the first segment.
Claim 15
Dependent Claim
17 words
The method of claim 1 , wherein the threshold is dependent on a size of the segment.
Claim 16
Independent Claim
91 words
A method for determining a frame rate from a set of possible frame rates for a frame in a communication system, the method comprising the steps of: receiving a frame; segmenting the frame into a first set of segments, each segment containing 8 symbols; segmenting the frame into a second set of segments, each segment containing 2 symbols; determining a first confidence level that the frame was originally transmitted as an eighth rate frame; and determining a second confidence level that the frame was originally transmitted as a half rate frame.
Claim 17
Independent Claim
91 words
A method for determining a frame rate from a set of possible frame rates for a frame in a communication system, the method comprising the steps of: receiving a frame; segmenting the frame into a first set of segments, each segment containing 8 symbols; segmenting the frame into a second set of segments, each segment containing 2 symbols; determining a first confidence level that the frame was originally transmitted as an eighth rate frame; and determining a second confidence level that the frame was originally transmitted as a half rate frame.
Claim 18
Independent Claim
78 words
An apparatus for determining a frame rate of a frame within a communication system, the apparatus comprising: a rate determiner having an input comprising a sub-rate correlation result, the sub-rate correlation result determined based on segmenting the frame into a set of segments and determining a confidence level that symbols within a segment of the set of segments were originally transmitted with the same polarity, the rate determiner outputting a frame rate based on the sub-rate correlation result.
Claim 19
Independent Claim
78 words
An apparatus for determining a frame rate of a frame within a communication system, the apparatus comprising: a rate determiner having an input comprising a sub-rate correlation result, the sub-rate correlation result determined based on segmenting the frame into a set of segments and determining a confidence level that symbols within a segment of the set of segments were originally transmitted with the same polarity, the rate determiner outputting a frame rate based on the sub-rate correlation result.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-09-03 | 2005-03-05 | 2005-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-09-03 | 2009-03-05 | 2009-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-09-03 | 2013-03-05 | 2013-09-04 | $7700.00 | Window Closed / Lapsed |