Emergency location method for a wireless location system
First Claim
1. 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.
2 Assignments
0 Petitions
Accused Products
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.
179 Citations
46 Claims
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1. A method for use in a Wireless Location System in locating a mobile transmitter, comprising the steps of:
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(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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for use in a Wireless Location System in locating a mobile transmitter in an emergency situation, comprising the steps of:
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(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. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A wireless location system, comprising:
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(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. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29)
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30. 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. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37)
- monitoring the bandwidth;
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38. 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. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46)
- determining that an emergency situation exists;
Specification