Patent US5415820A successfully refreshed from Google Patents.
Patent US6052597A successfully refreshed from Google Patents.
US6052597A
Expired / Lapsed
US
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Short message service initiated cellular mobile positioning system
Assignee: Europolitan AB
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Filing: 1996-02-16
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Granted: 2000-04-18
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Expires: 2016-02-16
Abstract
Abstract The position of a mobile station in a cellular mobile telephone system, particularly a GSM system, is determined by carrying out a simulated call setup, i.e., the call setup is interrupted subsequent to a telephone switching center (MSC) having received a paging response containing the identity of the cell and, optionally, a timing advance. The simulated call setup is initiated by generating a modified short message signal (SMS) which is not registered in the SMS catalogue of the mobile station and which is not shown to the user of the mobile station. The SMS commands the mobile station to carry out a position determining sequence in order to establish parameters for use in establishing the position of the mobile station, for example by commanding the mobile station to connect itself to a base station contained in its neighbor list, analyze the geographical position of the base station, and subsequently send the position determining parameters to a position handler. The geographical position of the base station is analyzed from the cell identity and, if available, the timing advance, the position of the mobile station being presented graphically on a picture screen and constantly updated after each call setup. The call setups are generated by the position handler.
Inventors
- 👤 Tommy Ekstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:26
CPC Classifications
H; H04; H04W; H04W64/00; G; G01; G01S; G01S5/00; G01S5/02; G01S5/14
Claims Analysis
Total Claims: 42
Claim 1
Independent Claim
125 words
A method for determining a position of a mobile station in a cellular mobile telephone system, comprising the steps of: initiating a simulated call setup between a position handler and the mobile station; and responding to the initiation of the simulated call setup, the response to the simulated call setup containing parameters for use in establishing the position of the mobile station, wherein the step of initiating the simulated call setup includes the step of generating a modified short message signal (SMS) which is not registered in the SMS catalogue of the mobile station and which is not shown to the user of the mobile station, said SMS commanding the mobile station to carry out a position determining sequence in order to establish said parameters.
Claim 2
Independent Claim
125 words
A method for determining a position of a mobile station in a cellular mobile telephone system, comprising the steps of: initiating a simulated call setup between a position handler and the mobile station; and responding to the initiation of the simulated call setup, the response to the simulated call setup containing parameters for use in establishing the position of the mobile station, wherein the step of initiating the simulated call setup includes the step of generating a modified short message signal (SMS) which is not registered in the SMS catalogue of the mobile station and which is not shown to the user of the mobile station, said SMS commanding the mobile station to carry out a position determining sequence in order to establish said parameters.
Claim 3
Dependent Claim
24 words
A method according to claim 1, further comprising the step of releasing said simulated call setup after receiving said response from said mobile station.
Claim 4
Dependent Claim
51 words
A method according to claim 1, wherein said step of initiating the simulated call setup includes the step of commanding the mobile station to carry out said position determining sequence by establishing simulated call setups between said mobile station and said base stations according to a list of neighboring mobile stations.
Claim 5
Dependent Claim
23 words
A method according to claim 1, wherein said parameters include at least one of a cell identity (Cell ID) and timing advance (TA).
Claim 6
Dependent Claim
33 words
A method according to claim 1, wherein said step of carrying out the positioning determining sequence includes the step of determining a position of said mobile station with respect to multiple base stations.
Claim 7
Dependent Claim
37 words
A method according to claim 5, further comprising the step of determining a longitude and latitude of said mobile station based on a longitude and latitude of an intersection of the cells of said multiple base stations.
Claim 8
Dependent Claim
32 words
A method according to claim 5, further comprising the step of determining the position of said mobile station by center-of-gravity calculations with respect to respective said parameters obtained from said multiple stations.
Claim 9
Dependent Claim
34 words
A method according to claim 1, wherein said modified SMS message generated by the position handler includes at least one Cell ID which triggers the mobile station to carry out said position determining sequence.
Claim 10
Dependent Claim
55 words
A method according to claim 1, wherein said position handler further carries out the steps of categorizing mobile stations intended for simulated call setups using a home location register (HLR) in a global system for mobile communications (GSM), and analyzing said simulated call setups using means that are present in a mobile services switching station.
Claim 11
Dependent Claim
53 words
A method according to claim 1, wherein said position handler further carries out the step of categorizing mobile stations intended for simulated call setups using an administrative device having a register, and the steps of generating and releasing said simulated call setups using at least one call generating device and said administrative device.
Claim 12
Dependent Claim
53 words
A method according to claim 1, wherein said parameters include cell identities, and further comprising the step of, subsequent to said simulated call setup, processing said cell identities by converting said cell identities to provide a longitude and latitude of said mobile station with regard to base stations related to said cell identities.
Claim 13
Dependent Claim
51 words
A method according to claim 1, further comprising the steps of electronically transmitting a graphic presentation of said position of said mobile station to a subscriber with the aid of a customer positioning connection; and updating said position of said mobile station on said graphic presentation subsequent to simulated call setups.
Claim 14
Dependent Claim
22 words
A method according to claim 12, wherein said subscriber carries out the step of determining a frequency of said simulated call setups.
Claim 15
Dependent Claim
19 words
A method according to claim 12, said graphic presentation includes information relating to vehicles assigned to said mobile stations.
Claim 16
Dependent Claim
31 words
A method according to claim 14, further comprising the step of activating said information relating to said vehicles by activating a graphic representation of one of said vehicles on said display.
Claim 17
Dependent Claim
54 words
A method according to claim 12, further comprising the steps of interrupting said customer positioning connection subsequent to having established a specific number of simulated call setups without said mobile station having changed position; and restoring said customer positioning connection when at least one change in said position of said mobile station is detected.
Claim 18
Dependent Claim
38 words
A method according to claim 1, further comprising the step of detecting a change of driver of a vehicle assigned to the mobile station based on an identity with which the driver activates or deactivates the mobile station.
Claim 19
Dependent Claim
20 words
A method according to claim 17, wherein said driver activates or deactivates said accompanying mobile station through a SIM module.
Claim 20
Dependent Claim
41 words
A method according to claim 1, wherein the step of initiating said call setup includes the step of placing a hand-carried station into a power amplifying adapter and initiating the call setup in response to a resulting change in transmission power.
Claim 21
Dependent Claim
26 words
A method according to claim 1, wherein operation of said position handler is controlled by a program loop stored in the position handler for a subscriber.
Claim 22
Independent Claim
120 words
A system for determining the position of a mobile station in a cellular mobile telephone system, comprising: a position handler including means for initiating a simulated call setup with a mobile station; and means for responding to the initiation of the simulated call setup, the response containing parameters for use in establishing the position of the mobile station, wherein the means for initiating the simulated call setup includes means for generating a modified short message signal (SMS) which is not registered in the SMS catalogue of the mobile station and which is not shown to the user of the mobile station, said SMS commanding the mobile station to carry out a position determining sequence in order to establish said parameters.
Claim 23
Independent Claim
120 words
A system for determining the position of a mobile station in a cellular mobile telephone system, comprising: a position handler including means for initiating a simulated call setup with a mobile station; and means for responding to the initiation of the simulated call setup, the response containing parameters for use in establishing the position of the mobile station, wherein the means for initiating the simulated call setup includes means for generating a modified short message signal (SMS) which is not registered in the SMS catalogue of the mobile station and which is not shown to the user of the mobile station, said SMS commanding the mobile station to carry out a position determining sequence in order to establish said parameters.
Claim 24
Dependent Claim
23 words
A system according to claim 21, further comprising means for releasing said simulated call setup after receiving said response from said mobile station.
Claim 25
Dependent Claim
51 words
A system according to claim 21, wherein said means for initiating the simulated call setup includes means for commanding the mobile station to carry out said position determining sequence includes means for establishing simulated call setups between said mobile station and base stations according to a list of neighboring mobile stations.
Claim 26
Dependent Claim
23 words
A system according to claim 21, wherein said parameters include at least one of a cell identity (Cell ID) and timing advance (TA).
Claim 27
Dependent Claim
32 words
A system according to claim 21, wherein said step of carrying out the positioning determining sequence includes means for determining a position of said mobile station with respect to multiple base stations.
Claim 28
Dependent Claim
36 words
A system according to claim 25, further comprising means for determining a longitude and latitude of said mobile station based on a longitude and latitude of an intersection of the cells of said multiple base stations.
Claim 29
Dependent Claim
31 words
A system according to claim 25, further comprising means for determining the position of said mobile station by center-of-gravity calculations with respect to respective said parameters obtained from said multiple stations.
Claim 30
Dependent Claim
34 words
A system according to claim 21, wherein said modified SMS message generated by the position handler includes at least one Cell ID which triggers the mobile station to carry out said position determining sequence.
Claim 31
Dependent Claim
52 words
A system according to claim 21, wherein said position handler includes means for categorizing mobile stations intended for simulated call setups using a home location register (HLR) in a global system for mobile communications (GSM), and analyzing said simulated call setups using means that are present in a mobile services switching station.
Claim 32
Dependent Claim
48 words
A system according to claim 21, wherein said position handler includes means for categorizing mobile stations intended for simulated call setups using an administrative device having a register, and said means for generating said simulated call setups includes at least one call generating device and said administrative device.
Claim 33
Dependent Claim
51 words
A system according to claim 21, wherein said parameters include cell identities, and further comprising means for, subsequent to said simulated call setup, processing cell identities by converting said cell identities to provide a longitude and latitude of said mobile station with regard to base stations related to said cell identities.
Claim 34
Dependent Claim
50 words
A system according to claim 21, further comprising means for electronically transmitting a graphic presentation of said position of said mobile station to a subscriber with the aid of a customer positioning connection; and updating said position of said mobile station on said graphic presentation subsequent to simulated call setups.
Claim 35
Dependent Claim
21 words
A system according to claim 32, wherein said subscriber carries out means for determining a frequency of said simulated call setups.
Claim 36
Dependent Claim
19 words
A system according to claim 32, said graphic presentation includes information relating to vehicles assigned to said mobile stations.
Claim 37
Dependent Claim
30 words
A system according to claim 34, further comprising means for activating said information relating to said vehicles by activating a graphic representation of one of said vehicles on said display.
Claim 38
Dependent Claim
53 words
A system according to claim 32, further comprising means for interrupting said customer positioning connection subsequent to having established a specific number of simulated call setups without said mobile station having changed position; and restoring said customer positioning connection when at least one change in said position of said mobile station is detected.
Claim 39
Dependent Claim
37 words
A system according to claim 21, further comprising means for detecting a change of driver of a vehicle assigned to the mobile station based on an identity with which the driver activates or deactivates the mobile station.
Claim 40
Dependent Claim
20 words
A system according to claim 37, wherein said driver activates or deactivates said accompanying mobile station through a SIM module.
Claim 41
Dependent Claim
40 words
A system according to claim 21, wherein said means for initiating said call setup includes means for placing a hand-carried station into a power amplifying adapter and initiating the call setup in response to a resulting change in transmission power.
Claim 42
Dependent Claim
26 words
A system according to claim 21, wherein operation of said position handler is controlled by a program loop stored in the position handler for a subscriber.
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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) | 2003-04-18 | 2003-10-18 | 2004-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-04-18 | 2007-10-18 | 2008-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-04-18 | 2011-10-18 | 2012-04-18 | $7700.00 | Window Closed / Lapsed |