US6070083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mobile communication device and communication network for providing location services
Assignee: Apple Inc
•
Filing: 1998-05-14
•
Granted: 2000-05-30
•
Expires: 2018-05-14
Abstract
Abstract A mobile communication system and communication device for providing location services. Time difference of arrival (TDOA) measurements are used to determine the location of a mobile of the network. The location may be forwarded to a service provider. The location may alternatively be used to determine service providers that are local to the mobile. Correction factors deprived from calibration TDOA measurements made at calibration terminals are applied to the TDOA measurements enhance the accuracy of the location determination.
Inventors
- 👤 J. Michael Watters
- 👤 Leo Strawczynski
- 👤 David Steer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:31
CPC Classifications
H; H04; H04W; H04W64/00; G; G01; G01S; G01S5/00; G01S5/0009; G01S5/0018; G01S5/0027; G01S5/02; G01S5/10; H04W4/00; H04W4/02; H04W4/029; G01S2205/00; G01S2205/001; G01S2205/008; H04W24/00; H04W28/00; H04W28/16; H04W28/24; H04W48/00; H04W48/08
Claims Analysis
Total Claims: 107
Claim 1
Independent Claim
105 words
A process in a mobile communication network comprising: determining time difference of arrival (TDOA) measurements made by a mobile for at least three base station pairs of the network; determining correction factors corresponding to each of said base station pairs; applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining the location of the mobile from said corrected TDOA measurements; receiving a specification of a type of service provider from the mobile; determining service providers of the type specified by the mobile that are local to the determined location of the mobile; and providing information regarding the service providers to the mobile.
Claim 2
Dependent Claim
105 words
A process in a mobile communication network comprising: determining time difference of arrival (TDOA) measurements made by a mobile for at least three base station pairs of the network; determining correction factors corresponding to each of said base station pairs; applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining the location of the mobile from said corrected TDOA measurements; receiving a specification of a type of service provider from the mobile; determining service providers of the type specified by the mobile that are local to the determined location of the mobile; and providing information regarding the service providers to the mobile.
Claim 3
Dependent Claim
30 words
The process claimed in claim 1, further comprising: receiving a specification of a service provider from the mobile; and providing the location of the mobile to the specified service provider.
Claim 4
Dependent Claim
22 words
The process claimed in claim 2, wherein providing the location of the mobile comprises initiating a call to the specified service provider.
Claim 5
Dependent Claim
21 words
The process claimed in claim 1, wherein determining correction factors comprises querying a database associating correction factors with base station pairs.
Claim 6
Dependent Claim
45 words
The process claimed in claim 1, wherein determining correction factors comprises: determining calibration TDOA measurements for said base station pairs made at known locations; and determining differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs.
Claim 7
Dependent Claim
116 words
A mobile communication network, comprising: means for determining time difference of arrival (TDOA) measurements made by a mobile for at least three base station pairs of the network; means for determining correction factors corresponding to each of said base station pairs; means for applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; means for determining the location of the mobile from said corrected TDOA measurements; means for receiving a specification of a type of service provider from the mobile; means for determining service providers of the type specified by the mobile that are local to the determined location of the mobile; and means for providing information regarding the service providers to the mobile.
Claim 8
Dependent Claim
116 words
A mobile communication network, comprising: means for determining time difference of arrival (TDOA) measurements made by a mobile for at least three base station pairs of the network; means for determining correction factors corresponding to each of said base station pairs; means for applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; means for determining the location of the mobile from said corrected TDOA measurements; means for receiving a specification of a type of service provider from the mobile; means for determining service providers of the type specified by the mobile that are local to the determined location of the mobile; and means for providing information regarding the service providers to the mobile.
Claim 9
Dependent Claim
36 words
The mobile communication network claimed in claim 6, further comprising: means for receiving a specification of a service provider from the mobile; and means for providing the location of the mobile to the specified service provider.
Claim 10
Dependent Claim
29 words
The mobile communication network claimed in claim 6, wherein said means for providing the location of the mobile comprises means for initiating a call to the specified service provider.
Claim 11
Dependent Claim
25 words
The mobile communication network claimed in claim 6, wherein said means for determining correction factors comprises a database associating correction factors with base station pairs.
Claim 12
Dependent Claim
54 words
The mobile communication network claimed in claim 6, wherein said means for determining correction factors comprises: means for determining calibration TDOA measurements for said base station pairs made at known locations; and means for determining differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs.
Claim 13
Dependent Claim
93 words
A process in a mobile of a mobile radio communication network, comprising: measuring a time difference of arrival (TDOA) at the mobile for at least three base station pairs of the network; determining correction factors associated with each of said base station pairs; applying said correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining a location from said TDOA measurements; providing said location and a specification of a service provider type; and receiving information regarding service providers of the specified type that are local to the location of the mobile.
Claim 14
Dependent Claim
93 words
A process in a mobile of a mobile radio communication network, comprising: measuring a time difference of arrival (TDOA) at the mobile for at least three base station pairs of the network; determining correction factors associated with each of said base station pairs; applying said correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining a location from said TDOA measurements; providing said location and a specification of a service provider type; and receiving information regarding service providers of the specified type that are local to the location of the mobile.
Claim 15
Dependent Claim
20 words
The process claimed in claim 11, further comprising providing a specification of a service provider identified in the received information.
Claim 16
Dependent Claim
22 words
The process claimed in claim 12, wherein providing a specification of a service provider comprises initiating a call to said service provider.
Claim 17
Dependent Claim
18 words
The process claimed in claim 11, wherein determining correction factors comprises receiving correction factors broadcast from base stations.
Claim 18
Dependent Claim
27 words
The process claimed in claim 11, wherein determining correction factors comprises querying at least one calibration terminal maintaining a database associating correction factors with base station pairs.
Claim 19
Dependent Claim
46 words
The process claimed in claim 11, wherein determining said correction factors comprises: determining calibration TDOA measurements for said base station pairs made at known locations; and determining differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs.
Claim 20
Dependent Claim
27 words
The process claimed in claim 16, wherein determining calibration TDOA measurements comprises querying a location server maintaining a database associating calibration TDOA measurements with case station pairs.
Claim 21
Dependent Claim
29 words
The process claimed in claim 16, wherein determining calibration TDOA measurements comprises querying at least one calibration terminal maintaining a database associating calibration TDOA measurements with base station pairs.
Claim 22
Dependent Claim
100 words
A mobile of a mobile radio communication network, comprising: means for measuring a time difference of arrival (TDOA) at the mobile for at least three base station pairs of the network; means for determining correction factors associated with each of said base station pairs; means for applying said correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining a location from said TDOA measurements; means for providing said location and a specification of a service provider type; and means for receiving information regarding service providers of the specified type that are local to the location of the mobile.
Claim 23
Dependent Claim
100 words
A mobile of a mobile radio communication network, comprising: means for measuring a time difference of arrival (TDOA) at the mobile for at least three base station pairs of the network; means for determining correction factors associated with each of said base station pairs; means for applying said correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining a location from said TDOA measurements; means for providing said location and a specification of a service provider type; and means for receiving information regarding service providers of the specified type that are local to the location of the mobile.
Claim 24
Dependent Claim
24 words
The mobile claimed in claim 19, further comprising means for providing a specification of a service provider identified in received information regarding service providers.
Claim 25
Dependent Claim
27 words
The mobile claimed in claim 20, wherein said means for providing a specification of a service provider comprises means for initiating a call to said service provider.
Claim 26
Dependent Claim
23 words
The mobile claimed in claim 19, wherein said means for determining correction factors comprises means for receiving correction factors broadcasts from base stations.
Claim 27
Dependent Claim
32 words
The mobile claimed in claim 19, wherein said means for determining correction factors comprises means for querying at least one calibration terminal maintaining a database associating correction factors with base station pairs.
Claim 28
Dependent Claim
52 words
The mobile claimed in claim 19, wherein said means for determining correction factors comprises: means for determining calibration TDOA measurements for said base station pairs made at known locations; and means for determining differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs.
Claim 29
Dependent Claim
32 words
The mobile claimed in claim 24, wherein said means for determining calibration TDOA measurements comprises means for querying a location server maintaining a database associating calibration TDOA measurements with base station pairs.
Claim 30
Dependent Claim
34 words
The mobile claimed in claim 24, wherein said means for determining calibration TDOA measurements comprises means for querying at least one calibration terminal maintaining a database associating calibration TDOA measurements with base station pairs.
Claim 31
Dependent Claim
99 words
A process in a mobile of a mobile radio communication network, comprising: measuring a time difference of arrival (TDOA) at the mobile for at least three base station pairs of the network; determining correction factors associated with each of said base station pairs by querying at least one calibration terminal maintaining a database associating correction factors with base station pairs; applying said correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining a location of the mobile from said TDOA measurements; and issuing a request to provide the location of the mobile to a specified service provider.
Claim 32
Dependent Claim
99 words
A process in a mobile of a mobile radio communication network, comprising: measuring a time difference of arrival (TDOA) at the mobile for at least three base station pairs of the network; determining correction factors associated with each of said base station pairs by querying at least one calibration terminal maintaining a database associating correction factors with base station pairs; applying said correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining a location of the mobile from said TDOA measurements; and issuing a request to provide the location of the mobile to a specified service provider.
Claim 33
Dependent Claim
30 words
The process claimed in claim 27, wherein providing a request to provide the location of the mobile to a specified service provider comprises initiating a call to the service provider.
Claim 34
Dependent Claim
103 words
A mobile of a mobile radio communication network, comprising: means for measuring a time difference of arrival (TDOA) at the mobile for at least three base station pairs of the network; means for determining correction factors associated with each of said base station pairs; means for applying said correction factors to corresponding TDOA measurements to yield corrected TDOA measurements by querying at least one calibration terminal maintaining a database associating correction factors with base station pairs; means for determining a location from said TDOA measurements; and means for issuing a request to provide the location of the mobile to a specified service provider.
Claim 35
Dependent Claim
103 words
A mobile of a mobile radio communication network, comprising: means for measuring a time difference of arrival (TDOA) at the mobile for at least three base station pairs of the network; means for determining correction factors associated with each of said base station pairs; means for applying said correction factors to corresponding TDOA measurements to yield corrected TDOA measurements by querying at least one calibration terminal maintaining a database associating correction factors with base station pairs; means for determining a location from said TDOA measurements; and means for issuing a request to provide the location of the mobile to a specified service provider.
Claim 36
Dependent Claim
35 words
The mobile claimed in claim 29, wherein said means for providing a request to provide the location of the mobile to a specified service provider comprises means for initiating a call to the service provider.
Claim 37
Dependent Claim
101 words
A process in an element of a mobile communication network, comprising: determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; determining correction factors corresponding to each of said base station pairs by querying at least one calibration terminal maintaining a database associating correction factors with base station pairs; applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining a location of the mobile from said corrected TDOA measurements; and providing the determined location to a service provider specified by the mobile.
Claim 38
Dependent Claim
101 words
A process in an element of a mobile communication network, comprising: determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; determining correction factors corresponding to each of said base station pairs by querying at least one calibration terminal maintaining a database associating correction factors with base station pairs; applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining a location of the mobile from said corrected TDOA measurements; and providing the determined location to a service provider specified by the mobile.
Claim 39
Dependent Claim
18 words
The process claimed in claim 31, wherein determining TDOA measurements comprises receiving TDOA measurements made by a mobile.
Claim 40
Dependent Claim
22 words
The process claimed in claim 31, wherein providing the location of the mobile comprises initiating a call to the specified service provider.
Claim 41
Dependent Claim
108 words
An element of a mobile communication network, comprising: means for determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; means for determining correction factors corresponding to each of said base station pairs by querying at least one calibration terminal maintaining a database associating correction factors with base station pairs; means for applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; means for determining a location of the mobile from said corrected TDOA measurements; and means for providing the determined location to a service provider specified by the mobile.
Claim 42
Dependent Claim
108 words
An element of a mobile communication network, comprising: means for determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; means for determining correction factors corresponding to each of said base station pairs by querying at least one calibration terminal maintaining a database associating correction factors with base station pairs; means for applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; means for determining a location of the mobile from said corrected TDOA measurements; and means for providing the determined location to a service provider specified by the mobile.
Claim 43
Dependent Claim
23 words
The element claimed in claim 34, wherein said means for determining TDOA measurements comprises means for receiving TDOA measurements made by a mobile.
Claim 44
Dependent Claim
27 words
The element claimed in claim 34, wherein said means for providing the location of the mobile comprises means for initiating a call to the specified service provider.
Claim 45
Dependent Claim
105 words
A process in an element of a mobile communication network comprising: determining a time difference of arrival (TDOA) measurement for at least three base station pairs of the network; determining correction factors corresponding to each of said base station pairs; applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining the location of the mobile from said corrected TDOA measurements; receiving a specification of a type of service provider from the mobile; determining service providers of the type specified by the mobile that are local to the determined location of the mobile; and providing information regarding the service providers to the mobile.
Claim 46
Dependent Claim
105 words
A process in an element of a mobile communication network comprising: determining a time difference of arrival (TDOA) measurement for at least three base station pairs of the network; determining correction factors corresponding to each of said base station pairs; applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining the location of the mobile from said corrected TDOA measurements; receiving a specification of a type of service provider from the mobile; determining service providers of the type specified by the mobile that are local to the determined location of the mobile; and providing information regarding the service providers to the mobile.
Claim 47
Dependent Claim
31 words
The process claimed in claim 37, further comprising: receiving a specification of a service provider provided by the mobile; and providing the location of the mobile to the specified service provider.
Claim 48
Dependent Claim
22 words
The process claimed in claim 38, wherein providing the location of the mobile comprises initiating a call to the specified service provider.
Claim 49
Dependent Claim
18 words
The process claimed in claim 37, wherein determining correction factors comprises receiving correction factor messages from base stations.
Claim 50
Dependent Claim
27 words
The process claimed in claim 37, wherein determining correction factors comprises querying at least one calibration terminal maintaining a database associating correction factors with base station pairs.
Claim 51
Dependent Claim
45 words
The process claimed in claim 37, wherein determining correction factors comprises: determining calibration TDOA measurements for said base station pairs made at known locations; and determining differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs.
Claim 52
Dependent Claim
23 words
The process claimed in claim 42, wherein determining calibration TDOA measurements comprises querying a database associating calibration TDOA measurements with base station pairs.
Claim 53
Dependent Claim
29 words
The process claimed in claim 42, wherein determining calibration TDOA measurements comprises querying at least one calibration terminal maintaining a database associating calibration TDOA measurements with base station pairs.
Claim 54
Dependent Claim
115 words
An element of a mobile communication network comprising: means for determining a time difference of arrival (TDOA) for at least three base station pairs of the network; means for determining correction factors corresponding to each of the base station pairs; means for applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; means for determining the location of the mobile from said corrected TDOA measurements; means for receiving a specification of a type of service provider from the mobile; means for determining service providers of the type specified by the mobile that arc local to the determined location of the mobile; and means for providing information regarding the service providers to the mobile.
Claim 55
Dependent Claim
115 words
An element of a mobile communication network comprising: means for determining a time difference of arrival (TDOA) for at least three base station pairs of the network; means for determining correction factors corresponding to each of the base station pairs; means for applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; means for determining the location of the mobile from said corrected TDOA measurements; means for receiving a specification of a type of service provider from the mobile; means for determining service providers of the type specified by the mobile that arc local to the determined location of the mobile; and means for providing information regarding the service providers to the mobile.
Claim 56
Dependent Claim
35 words
The element claimed in claim 45, further comprising: means for receiving a specification of a service provider provided by the mobile; and means for providing the location of the mobile to the specified service provider.
Claim 57
Dependent Claim
27 words
The element claimed in claim 45, wherein said means for providing the location of the mobile comprises means for initiating a call to the specified service provider.
Claim 58
Dependent Claim
23 words
The element claimed in claim 45, wherein said means for determining correction factors comprises means for receiving correction factor messages from base stations.
Claim 59
Dependent Claim
32 words
The element claimed in claim 45, wherein said means for determining correction factors comprises means for querying at least one calibration terminal maintaining a database associating correction factors with base station pairs.
Claim 60
Dependent Claim
52 words
The element claimed in claim 45, wherein said means for determining correction factors comprises: means for determining calibration TDOA measurements for said base station pairs made at known locations; and means for determining differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs.
Claim 61
Dependent Claim
25 words
The element claimed in claim 50, wherein said means for determining calibration TDOA measurements comprises a database associating calibration TDOA measurements with base station pairs.
Claim 62
Dependent Claim
123 words
A process in an element of a mobile communication network, comprising: determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; determining calibration TDOA measurements for each of said base station pairs made at known locations by querying a database associating calibration TDOA measurements with base station pairs; determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining a location of the mobile from said corrected TDOA measurements; and providing the determined location to a service provider specified by the mobile.
Claim 63
Dependent Claim
123 words
A process in an element of a mobile communication network, comprising: determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; determining calibration TDOA measurements for each of said base station pairs made at known locations by querying a database associating calibration TDOA measurements with base station pairs; determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining a location of the mobile from said corrected TDOA measurements; and providing the determined location to a service provider specified by the mobile.
Claim 64
Dependent Claim
18 words
The process claimed in claim 52, wherein determining TDOA measurements comprises receiving TDOA measurements made by a mobile.
Claim 65
Dependent Claim
22 words
The process claimed in claim 52, wherein providing the location of the mobile comprises initiating a call to the specified service provider.
Claim 66
Dependent Claim
125 words
A process in an element of a mobile communication network, comprising: determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; determining calibration TDOA measurements for each of said base stat on pairs made at known locations by querying a calibration terminal associating calibration TDOA measurements with base station pairs; determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining a location of the mobile from said corrected TDOA measurements; and providing the determined location to a service provider specified by the mobile.
Claim 67
Dependent Claim
125 words
A process in an element of a mobile communication network, comprising: determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; determining calibration TDOA measurements for each of said base stat on pairs made at known locations by querying a calibration terminal associating calibration TDOA measurements with base station pairs; determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining a location of the mobile from said corrected TDOA measurements; and providing the determined location to a service provider specified by the mobile.
Claim 68
Dependent Claim
18 words
The process claimed in claim 55, wherein determining TDOA measurements comprises receiving TDOA measurements made by a mobile.
Claim 69
Dependent Claim
22 words
The process claimed in claim 55, wherein providing the location of the mobile comprises initiating a call to the specified service provider.
Claim 70
Dependent Claim
132 words
An element of a mobile communication network, comprising: means for determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; means for determining calibration TDOA measurements for each of said base station pairs made at known locations by querying a database associating calibration TDOA measurements with base station pairs; means for determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; means for applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; means for determining a location of the mobile from said corrected TDOA measurements; and means for providing the determined location to a service provider specified by the mobile.
Claim 71
Dependent Claim
132 words
An element of a mobile communication network, comprising: means for determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; means for determining calibration TDOA measurements for each of said base station pairs made at known locations by querying a database associating calibration TDOA measurements with base station pairs; means for determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; means for applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; means for determining a location of the mobile from said corrected TDOA measurements; and means for providing the determined location to a service provider specified by the mobile.
Claim 72
Dependent Claim
23 words
The element claimed in claim 58, wherein said means for determining TDOA measurements comprises means for receiving TDOA measurements made by a mobile.
Claim 73
Dependent Claim
27 words
The element claimed in claim 58, wherein said means for providing the location of the mobile comprises means for initiating a call to the specified service provider.
Claim 74
Dependent Claim
133 words
An element of a mobile communication network, comprising: means for determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; means for determining calibration TDOA measurements for each of said base station pairs made at known locations by querying a calibration terminal associating calibration TDOA measurements with base station pairs; means for determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; means for applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; means for determining a location of the mobile from said corrected TDOA measurements; and means for providing the determined location to a service provider specified by the mobile.
Claim 75
Dependent Claim
133 words
An element of a mobile communication network, comprising: means for determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; means for determining calibration TDOA measurements for each of said base station pairs made at known locations by querying a calibration terminal associating calibration TDOA measurements with base station pairs; means for determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; means for applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; means for determining a location of the mobile from said corrected TDOA measurements; and means for providing the determined location to a service provider specified by the mobile.
Claim 76
Dependent Claim
23 words
The element claimed in claim 61, wherein said means for determining TDOA measurements comprises means for receiving TDOA measurements made by a mobile.
Claim 77
Dependent Claim
27 words
The element claimed in claim 61, wherein said means for providing the location of the mobile comprises means for initiating a call to the specified service provider.
Claim 78
Dependent Claim
98 words
A process in a mobile communication network, comprising: determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; determining correction factors corresponding to each of said base station pairs by querying at least one calibration terminal maintaining a database associating correction factors with base station pairs; applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining a location of the mobile from said corrected TDOA measurements; and providing the determined location to a service provider specified by the mobile.
Claim 79
Dependent Claim
98 words
A process in a mobile communication network, comprising: determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; determining correction factors corresponding to each of said base station pairs by querying at least one calibration terminal maintaining a database associating correction factors with base station pairs; applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining a location of the mobile from said corrected TDOA measurements; and providing the determined location to a service provider specified by the mobile.
Claim 80
Dependent Claim
22 words
The process claimed in claim 64, wherein providing the location of the mobile comprises initiating a call to the specified service provider.
Claim 81
Dependent Claim
105 words
A mobile communication network, comprising: means for determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; means for determining correction factors corresponding to each of said base station pairs by querying at least one calibration terminal maintaining a database associating correction factors with base station pairs; means for applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; means for determining a location of the mobile from said corrected TDOA measurements; and means for providing the determined location to a service provider specified by the mobile.
Claim 82
Dependent Claim
105 words
A mobile communication network, comprising: means for determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; means for determining correction factors corresponding to each of said base station pairs by querying at least one calibration terminal maintaining a database associating correction factors with base station pairs; means for applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; means for determining a location of the mobile from said corrected TDOA measurements; and means for providing the determined location to a service provider specified by the mobile.
Claim 83
Dependent Claim
27 words
The network claimed in claim 66, wherein said means for providing the location of the mobile comprises means for initiating a call to the specified service provider.
Claim 84
Dependent Claim
120 words
A process in a mobile communication network, comprising: determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; determining calibration TDOA measurements for each of said base station pairs made at known locations by querying a database associating calibration TDOA measurements with base station pairs; determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining a location of the mobile from said corrected TDOA measurements; and providing the determined location to a service provider specified by the mobile.
Claim 85
Dependent Claim
120 words
A process in a mobile communication network, comprising: determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; determining calibration TDOA measurements for each of said base station pairs made at known locations by querying a database associating calibration TDOA measurements with base station pairs; determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining a location of the mobile from said corrected TDOA measurements; and providing the determined location to a service provider specified by the mobile.
Claim 86
Dependent Claim
22 words
The process claimed in claim 68, wherein providing the location of the mobile comprises initiating a call to the specified service provider.
Claim 87
Dependent Claim
121 words
A process in a mobile communication network, comprising: determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; determining calibration TDOA measurements for each of said base station pairs made at known locations by querying a calibration terminal associating calibration TDOA measurements with base station pairs; determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining a location of the mobile from said corrected TDOA measurements; and providing the determined location to a service provider specified by the mobile.
Claim 88
Dependent Claim
121 words
A process in a mobile communication network, comprising: determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; determining calibration TDOA measurements for each of said base station pairs made at known locations by querying a calibration terminal associating calibration TDOA measurements with base station pairs; determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining a location of the mobile from said corrected TDOA measurements; and providing the determined location to a service provider specified by the mobile.
Claim 89
Dependent Claim
22 words
The process claimed in claim 70, wherein providing the location of the mobile comprises initiating a call to the specified service provider.
Claim 90
Dependent Claim
129 words
A mobile communication network, comprising: means for determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; means for determining calibration TDOA measurements for each of said base station pairs made at known locations by querying a database associating calibration TDOA measurements with base station pairs; means for determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; means for applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; means for determining a location of the mobile from said corrected TDOA measurements; and means for providing the determined location to a service provider specified by the mobile.
Claim 91
Dependent Claim
129 words
A mobile communication network, comprising: means for determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; means for determining calibration TDOA measurements for each of said base station pairs made at known locations by querying a database associating calibration TDOA measurements with base station pairs; means for determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; means for applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; means for determining a location of the mobile from said corrected TDOA measurements; and means for providing the determined location to a service provider specified by the mobile.
Claim 92
Dependent Claim
27 words
The network claimed in claim 72, wherein said means for providing the location of the mobile comprises means for initiating a call to the specified service provider.
Claim 93
Dependent Claim
130 words
A mobile communication network, comprising: means for determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; means for determining calibration TDOA measurements for each of said base station pairs made at known locations by querying a calibration terminal associating calibration TDOA measurements with base station pairs; means for determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; means for applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; means for determining a location of the mobile from said corrected TDOA measurements; and means for providing the determined location to a service provider specified by the mobile.
Claim 94
Dependent Claim
130 words
A mobile communication network, comprising: means for determining time difference of arrival (TDOA) measurements at the location of a mobile of the network for at least three base station pairs of the network; means for determining calibration TDOA measurements for each of said base station pairs made at known locations by querying a calibration terminal associating calibration TDOA measurements with base station pairs; means for determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; means for applying correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; means for determining a location of the mobile from said corrected TDOA measurements; and means for providing the determined location to a service provider specified by the mobile.
Claim 95
Dependent Claim
27 words
The network claimed in claim 74, wherein said means for providing the location of the mobile comprises means for initiating a call to the specified service provider.
Claim 96
Dependent Claim
121 words
A process in a mobile of a mobile radio communication network, comprising: measuring a time difference of arrival (TDOA) at the mobile for at least three base station pairs of the network; determining calibration TDOA measurements for said base station pairs made at known locations by querying a location server maintaining a database associating calibration TDOA measurements with base station pairs; and determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; applying said correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining a location from said TDOA measurements; and providing a request to provide the location of the mobile to a specified service provider.
Claim 97
Dependent Claim
121 words
A process in a mobile of a mobile radio communication network, comprising: measuring a time difference of arrival (TDOA) at the mobile for at least three base station pairs of the network; determining calibration TDOA measurements for said base station pairs made at known locations by querying a location server maintaining a database associating calibration TDOA measurements with base station pairs; and determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; applying said correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining a location from said TDOA measurements; and providing a request to provide the location of the mobile to a specified service provider.
Claim 98
Dependent Claim
29 words
The process claimed in claim 76, wherein determining calibration TDOA measurements comprises querying at least one calibration terminal maintaining a database associating calibration TDOA measurements with base station pairs.
Claim 99
Dependent Claim
130 words
A mobile of a mobile radio communication network, comprising: means for measuring a time difference of arrival (TDOA) at the mobile for at least three base station pairs of the network; means for determining calibration TDOA measurements for said base station pairs made at known locations by querying a location server maintaining a database associating calibration TDOA measurements with base station pairs; and means for determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; means for applying said correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; means for determining a location from said TDOA measurements; and means for providing a request to provide the location of the mobile to a specified service provider.
Claim 100
Dependent Claim
130 words
A mobile of a mobile radio communication network, comprising: means for measuring a time difference of arrival (TDOA) at the mobile for at least three base station pairs of the network; means for determining calibration TDOA measurements for said base station pairs made at known locations by querying a location server maintaining a database associating calibration TDOA measurements with base station pairs; and means for determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; means for applying said correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; means for determining a location from said TDOA measurements; and means for providing a request to provide the location of the mobile to a specified service provider.
Claim 101
Dependent Claim
35 words
The mobile claimed in claim 78, wherein said means for providing a request to provide the location of the mobile to a specified service provider comprises means for initiating a call to the service provider.
Claim 102
Dependent Claim
121 words
A process in a mobile of a mobile radio communication network, comprising: measuring a time difference of arrival (TDOA) at the mobile for at least three base station pairs of the network; determining calibration TDOA measurements for said base station pair, made at known locations by querying a calibration terminal maintaining a database associating calibration TDOA measurements with base station pairs; and determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; applying said correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining a location from said TDOA measurements; and providing a request to provide the location of the mobile to a specified service provider.
Claim 103
Dependent Claim
121 words
A process in a mobile of a mobile radio communication network, comprising: measuring a time difference of arrival (TDOA) at the mobile for at least three base station pairs of the network; determining calibration TDOA measurements for said base station pair, made at known locations by querying a calibration terminal maintaining a database associating calibration TDOA measurements with base station pairs; and determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; applying said correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; determining a location from said TDOA measurements; and providing a request to provide the location of the mobile to a specified service provider.
Claim 104
Dependent Claim
29 words
The process claimed in claim 80, wherein determining calibration TDOA measurements comprises querying at least one calibration terminal maintaining a database associating calibration TDOA measurements with base station pairs.
Claim 105
Dependent Claim
130 words
A mobile of a mobile radio communication network, comprising: means for measuring a time difference of arrival (TDOA) at the mobile for at least three base station pairs of the network; means for determining calibration TDOA measurements for said base station pairs made at known locations by querying a calibration terminal maintaining a database associating calibration TDOA measurements with base station pairs; and means for determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; means for applying said correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; means for determining a location from said TDOA measurements; and means for providing a request to provide the location of the mobile to a specified service provider.
Claim 106
Dependent Claim
130 words
A mobile of a mobile radio communication network, comprising: means for measuring a time difference of arrival (TDOA) at the mobile for at least three base station pairs of the network; means for determining calibration TDOA measurements for said base station pairs made at known locations by querying a calibration terminal maintaining a database associating calibration TDOA measurements with base station pairs; and means for determining correction factors comprising differences between said calibration TDOA measurements and expected TDOA measurements at said known locations for said base station pairs; means for applying said correction factors to corresponding TDOA measurements to yield corrected TDOA measurements; means for determining a location from said TDOA measurements; and means for providing a request to provide the location of the mobile to a specified service provider.
Claim 107
Dependent Claim
35 words
The mobile claimed in claim 82, wherein said means for providing a request to provide the location of the mobile to a specified service provider comprises means for initiating a call to the service provider.
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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) | 2003-05-30 | 2003-11-29 | 2004-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-05-30 | 2007-11-29 | 2008-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-05-30 | 2011-11-29 | 2012-05-30 | $7700.00 | Window Closed / Lapsed |