Multiple pass location processing
First Claim
1. A multiple pass location processing method for use in a wireless location system (WLS) capable of locating a wireless transmitter based on a transmission received from the wireless transmitter, comprising the steps of:
- (a) identifying the received transmission as requiring multiple pass location processing whereby the WLS produces a first, lower quality location estimate and then subsequently produces a second, higher quality location estimate;
(b) producing the first location estimate and providing said first location estimate to a first location application; and
(c) producing the second location estimate.
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Accused Products
Abstract
A multiple pass location processing method, for use in a wireless location system (WLS), comprises identifying a received transmission as requiring multiple pass location processing whereby the WLS produces a first, lower quality location estimate and then subsequently produces a second, higher quality location estimate. The WLS then produces the first location estimate and provides it to a first location application, and then produces the second location estimate. The second location estimate may be a more accurate estimate than the first location estimate and/or of a higher confidence than the first location estimate. This method is suitable, but not limited, for use in connection with locating a wireless transmitter involved in an emergency services call and routing the call to a call center.
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Citations
65 Claims
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1. A multiple pass location processing method for use in a wireless location system (WLS) capable of locating a wireless transmitter based on a transmission received from the wireless transmitter, comprising the steps of:
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(a) identifying the received transmission as requiring multiple pass location processing whereby the WLS produces a first, lower quality location estimate and then subsequently produces a second, higher quality location estimate;
(b) producing the first location estimate and providing said first location estimate to a first location application; and
(c) producing the second location estimate. - View Dependent Claims (2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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3. A method as recited in claim l, wherein the second location estimate is of a higher confidence than the first location estimate.
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30. A multiple pass location processing method for use in a wireless location system (WLS) capable of locating a wireless transmitter involved in an emergency services call, based on a transmission received from the wireless transmitter, and routing the call to a call center, comprising the steps of:
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(a) identifying the received transmission as requiring multiple pass location processing whereby the WLS produces a first, lower quality location estimate for use in call routing and then subsequently produces a second, higher quality location estimate;
(b) producing the first location estimate and providing said first location estimate to a first location application; and
(c) producing the second location estimate;
wherein the first location estimate is less accurate than the second location estimate but is sufficient for call routing purposes.
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31. A wireless location system (WLS), comprising:
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(a) a plurality of geographically separated receiver systems for receiving a transmission from a wireless transmitter;
(b) means for identifying the received transmission as requiring multiple pass location processing;
(c) means for producing a first, lower quality location estimate;
(d) means for providing said first location estimate to a first location application;
(e) means for producing a second, higher quality location estimate; and
(f) means for providing said second location estimate to the first or a second location application. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60)
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61. A WLS as recited in clam 31, wherein a flag is included in a location record to indicate the first pass or second pass status of the location estimate contained in the record.
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62. A multiple pass location processing means for use in a wireless location system (WLS) capable of locating a wireless transmitter involved in an emergency services call, based on a transmission received from the wireless transmitter, and routing the call to a call center, comprising:
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(a) means for identifying the received transmission as requiring multiple pass location processing whereby the WLS produces a first, lower quality location estimate for use in call routing and then subsequently produces a second, higher quality location estimate;
(b) means for producing the first location estimate and providing said first location estimate to a first location application; and
(c) means for producing the second location estimate;
wherein the first location estimate is less accurate than the second location estimate but is sufficient for call routing purposes. - View Dependent Claims (63, 64)
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65. A wireless location system (WLS), comprising;
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(a) a plurality of geographically separated receiver systems for receiving a transmission from a wireless transmitter;
(b) a processor and executable instructions for producing a first, lower quality location estimate, and for producing a second, higher quality location estimate;
(c) a communications mechanism for providing said first location estimate to a first location application, whereby said first location estimate may be used for call routing purposes.
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Specification