US6172644B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emergency location method for a wireless location system
Assignee: Qualcomm Inc
•
Filing: 1999-01-12
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Granted: 2001-01-09
•
Expires: 2019-01-12
Abstract
Abstract A method for use in locating a mobile transmitter in an emergency situation comprises the steps of (a) upon determining that the emergency situation exists, monitoring a bandwidth of a reverse voice channel (RVC) signal transmitted by the mobile transmitter; (b) determining whether the bandwidth exceeds a predetermined threshold; (c) if the bandwidth exceeds the predetermined threshold, measuring the location of the mobile transmitter; and (d) if the bandwidth does not exceed the predetermined threshold, performing a predetermined action to increase the bandwidth and subsequently measuring the location of the mobile transmitter.
Inventors
- 👤 Louis A. Stilp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:43
CPC Classifications
G; G01; G01S; G01S5/00; G01S5/02; G01S5/10; H; H04; H04W; H04W64/00; G01S5/0205; G01S5/021; G01S5/0284; G01S5/06; G01S1/00; G01S1/02; G01S1/022; G01S1/026; G01S2205/00; G01S2205/001; G01S2205/006; G01S2205/008; G01S2205/01; G01S2205/06; G01S5/0215; G01S5/0218; G01S5/0221; G01S5/02213; G01S5/02216; G01S5/0244; G01S5/0246; G01S5/0252; G01S5/02521; G01S5/0257; G01S5/0268; H04W4/00; H04W4/90; H04W76/00; H04W76/50; Y; Y02; Y02D; Y02D30/00; Y02D30/70
Claims Analysis
Total Claims: 51
Claim 1
Independent Claim
57 words
A method for use in a Wireless Location System in locating a mobile transmitter, comprising the steps of: (a) monitoring the bandwidth of a reverse voice channel (RVC) signal; (b) determining whether said bandwidth exceeds a predetermined threshold; and (c) calculating the location of said mobile transmitter if and only if said bandwidth exceeds said predetermined threshold.
Claim 2
Independent Claim
57 words
A method for use in a Wireless Location System in locating a mobile transmitter, comprising the steps of: (a) monitoring the bandwidth of a reverse voice channel (RVC) signal; (b) determining whether said bandwidth exceeds a predetermined threshold; and (c) calculating the location of said mobile transmitter if and only if said bandwidth exceeds said predetermined threshold.
Claim 3
Dependent Claim
59 words
A method as recited in claim 1 , wherein said mobile transmitter is carried by a user, the method further comprises the step of, prior to step (c) and after determining in step (b) that said bandwidth does not exceed said threshold, taking an action to cause the mobile transmitter to transmit an RVC signal with a larger bandwidth.
Claim 4
Dependent Claim
22 words
A method as recited in claim 2 , further comprising asking said user to dial a number of at least 9 digits.
Claim 5
Dependent Claim
27 words
A method as recited in claim 2 , further comprising asking an emergency dispatcher to instruct said user to dial a number of at least 9 digits.
Claim 6
Dependent Claim
22 words
A method as recited in claim 1 , wherein said predetermined threshold is within the range of approximately 8 to 12 KHz.
Claim 7
Dependent Claim
16 words
A method as recited in claim 5 , wherein said predetermined threshold is approximately 10 KHz.
Claim 8
Dependent Claim
59 words
A method as recited in claim 5 , wherein said mobile transmitter is carried by a user and the method further comprises the step of, prior to step (c) and after determining in step (b) that said bandwidth does not exceed said threshold, taking an action to cause the mobile transmitter to transmit an RVC signal of increased bandwidth.
Claim 9
Dependent Claim
21 words
A method as recited in claim 2 , wherein the method further comprises sending an audit message to the mobile transmitter.
Claim 10
Dependent Claim
26 words
A method as recited in claim 8 , wherein the audit message is sent automatically to the mobile transmitter upon command from the wireless location system.
Claim 11
Independent Claim
97 words
A method for use in a Wireless Location System in locating a mobile transmitter in an emergency situation, comprising the steps of: (a) upon determining that said emergency situation exists, monitoring a bandwidth of a reverse voice channel (RVC) signal transmitted by said mobile transmitter; (b) determining whether said bandwidth exceeds a predetermined threshold; (c) if said bandwidth exceeds said predetermined threshold, measuring the location of said mobile transmitter; and (d) if said bandwidth does not exceed said predetermined threshold, performing a predetermined action to increase said bandwidth and subsequently measuring the location of said mobile transmitter.
Claim 12
Independent Claim
97 words
A method for use in a Wireless Location System in locating a mobile transmitter in an emergency situation, comprising the steps of: (a) upon determining that said emergency situation exists, monitoring a bandwidth of a reverse voice channel (RVC) signal transmitted by said mobile transmitter; (b) determining whether said bandwidth exceeds a predetermined threshold; (c) if said bandwidth exceeds said predetermined threshold, measuring the location of said mobile transmitter; and (d) if said bandwidth does not exceed said predetermined threshold, performing a predetermined action to increase said bandwidth and subsequently measuring the location of said mobile transmitter.
Claim 13
Dependent Claim
45 words
A method as recited in claim 10 , wherein said mobile transmitter is carried by a user and said predetermined action comprises requesting the user to take an action to cause the mobile transmitter to transmit an RVC signal comprising a prescribed number of bits.
Claim 14
Dependent Claim
24 words
A method as recited in claim 11 , wherein said predetermined action comprises asking said user to a number of at least 9 digits.
Claim 15
Dependent Claim
30 words
A method as recited in claim 11 , wherein said predetermined action comprises asking an emergency dispatcher to instruct said user to dial a number of at least 9 digits.
Claim 16
Dependent Claim
22 words
A method as recited in claim 10 , wherein said predetermined threshold is within the range of approximately 8 to 12 KHz.
Claim 17
Dependent Claim
16 words
A method as recited in claim 14 , wherein said predetermined threshold is approximately 10 KHz.
Claim 18
Dependent Claim
45 words
A method as recited in claim 12 , wherein said mobile transmitter is carried by a user and said predetermined action comprises requesting the user to take an action to cause the mobile transmitter to transmit an RVC signal comprising a prescribed number of bits.
Claim 19
Dependent Claim
21 words
A method as recited in claim 16 , wherein said predetermined action comprises asking said user to dial a 9-digit number.
Claim 20
Dependent Claim
26 words
A method as recited in claim 16 , wherein said predetermined action comprises asking an emergency dispatcher to instruct said user to dial a 9-digit number.
Claim 21
Dependent Claim
21 words
A method as recited in claim 10 , wherein said predetermined action comprises sending an audit message to the mobile transmitter.
Claim 22
Dependent Claim
26 words
A method as recited in claim 19 , wherein the audit message is sent automatically to the mobile transmitter upon command from the wireless location system.
Claim 23
Dependent Claim
54 words
A wireless location system, comprising: (a) means for monitoring the bandwidth of a reverse voice channel (RVC) signal from a mobile transmitter; (b) means for determining whether said bandwidth exceeds a predetermined threshold; and (c) means for calculating the location of said mobile transmitter if and only if said bandwidth exceeds said predetermined threshold.
Claim 24
Dependent Claim
54 words
A wireless location system, comprising: (a) means for monitoring the bandwidth of a reverse voice channel (RVC) signal from a mobile transmitter; (b) means for determining whether said bandwidth exceeds a predetermined threshold; and (c) means for calculating the location of said mobile transmitter if and only if said bandwidth exceeds said predetermined threshold.
Claim 25
Dependent Claim
40 words
A system as recited in claim 21 , wherein said mobile transmitter is carried by a user, the system further comprising means for taking an action to cause the mobile transmitter to transmit an RVC signal with a larger bandwidth.
Claim 26
Dependent Claim
24 words
A system as recited in claim 22 , further comprising means for asking said user to dial a number of at least 9 digits.
Claim 27
Dependent Claim
29 words
A system as recited in claim 22 , further comprising means for asking an emergency dispatcher to instruct said user to dial a number of at least 9 digits.
Claim 28
Dependent Claim
22 words
A system as recited in claim 21 , wherein said predetermined threshold is within the range of approximately 8 to 12 KHz.
Claim 29
Dependent Claim
16 words
A system as recited in claim 25 , wherein said predetermined threshold is approximately 10 KHz.
Claim 30
Dependent Claim
40 words
A system as recited in claim 25 , wherein said mobile transmitter is carried by a user and the system further comprises means for taking an action to cause the mobile transmitter to transmit an RVC signal of increased bandwidth.
Claim 31
Dependent Claim
23 words
A system as recited in claim 22 , wherein the system further comprises means for sending an audit message to the mobile transmitter.
Claim 32
Dependent Claim
22 words
A system as recited in claim 28 , comprising means for sending the audit message automatically to the mobile transmitter upon command.
Claim 33
Independent Claim
73 words
A method for use in a wireless location system for locating a mobile transmitter transmitting a signal with a bandwidth, wherein the mobile transmitter is carried by a user, comprising the acts of: monitoring the bandwidth; determining whether the bandwidth exceeds a predetermined threshold; calculating location only if the bandwidth exceeds the threshold; taking an action to cause the mobile transmitter to transmit a reverse voice channel (RVC) signal with a larger bandwidth.
Claim 34
Independent Claim
73 words
A method for use in a wireless location system for locating a mobile transmitter transmitting a signal with a bandwidth, wherein the mobile transmitter is carried by a user, comprising the acts of: monitoring the bandwidth; determining whether the bandwidth exceeds a predetermined threshold; calculating location only if the bandwidth exceeds the threshold; taking an action to cause the mobile transmitter to transmit a reverse voice channel (RVC) signal with a larger bandwidth.
Claim 35
Dependent Claim
21 words
A method as recited in claim 30 , wherein the action comprises asking the user to dial at least 9 digits.
Claim 36
Dependent Claim
24 words
A method as recited in claim 30 , wherein the action comprises asking an emergency dispatcher to instruct the user to dial 9 digits.
Claim 37
Dependent Claim
23 words
A method as recited in claim 30 , wherein the action comprises causing the sending of an audit message to the mobile transmitter.
Claim 38
Dependent Claim
22 words
A method as recited in claim 33 , wherein the audit message is sent automatically upon command from the wireless location system.
Claim 39
Dependent Claim
22 words
A method as recited in claim 30 , wherein the predetermined threshold is within the range of 8 KHz to 12 KHz.
Claim 40
Dependent Claim
16 words
A method as recited in claim 35 , wherein the predetermined threshold is approximately 10 KHz.
Claim 41
Dependent Claim
40 words
A method as recited in claim 36 , wherein the mobile transmitter is carried by a user, and further comprising taking an action to cause the mobile transmitter to transmit a reverse voice channel (RVC) signal with a larger bandwidth.
Claim 42
Independent Claim
83 words
A method for use in a wireless location system for locating a mobile transmitter, comprising: determining that an emergency situation exists; monitoring the bandwidth of a reverse voice channel (RVC) signal from the mobile transmitter; determining whether the bandwidth exceeds a predetermined threshold; measuring the location of the mobile transmitter if the bandwidth does exceed the threshold; and, if the bandwidth is less than the threshold, performing a predetermined action to increase the bandwidth and then measuring the location of the mobile transmitter.
Claim 43
Independent Claim
83 words
A method for use in a wireless location system for locating a mobile transmitter, comprising: determining that an emergency situation exists; monitoring the bandwidth of a reverse voice channel (RVC) signal from the mobile transmitter; determining whether the bandwidth exceeds a predetermined threshold; measuring the location of the mobile transmitter if the bandwidth does exceed the threshold; and, if the bandwidth is less than the threshold, performing a predetermined action to increase the bandwidth and then measuring the location of the mobile transmitter.
Claim 44
Dependent Claim
42 words
A method as recited in claim 38 , wherein the mobile transmitter is carried by a user, and further comprising taking an action to cause the mobile transmitter to transmit a reverse voice channel (RVC) signal with a prescribed number of bits.
Claim 45
Dependent Claim
21 words
A method as recited in claim 39 , wherein the action comprises asking the user to dial at least 9 digits.
Claim 46
Dependent Claim
24 words
A method as recited in claim 39 , wherein the action comprises asking an emergency dispatcher to instruct the user to dial 9 digits.
Claim 47
Dependent Claim
23 words
A method as recited in claim 39 , wherein the action comprises causing an audit message to be sent to the mobile transmitter.
Claim 48
Dependent Claim
22 words
A method as recited in claim 42 , wherein the audit message is sent automatically upon command from the wireless location system.
Claim 49
Dependent Claim
21 words
A method as recited in claim 38 , wherein the predetermined threshold is within range of 8 KHz to 12 KHz.
Claim 50
Dependent Claim
16 words
A method as recited in claim 44 , wherein the predetermined threshold is approximately 10 KHz.
Claim 51
Dependent Claim
40 words
A method as recited in claim 45 , wherein the mobile transmitter is carried by a user, and further comprising taking an action to cause the mobile transmitter to transmit a reverse voice channel (RVC) signal with a larger bandwidth.
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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) | 2004-01-09 | 2004-07-10 | 2005-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-01-09 | 2008-07-10 | 2009-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-01-09 | 2012-07-10 | 2013-01-09 | $7700.00 | Window Closed / Lapsed |