Method of and system for setting up a telephone call

• US 20090215428A1
• Filed: 11/01/2005
• Published: 08/27/2009
• Est. Priority Date: 11/01/2005
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Zuurveld, Marco, Noldus, Rogier August Caspar Joseph
• Granted Patent: US 8,301,111 B2
• Time in Patent Office: Days
• US Class Current: 455/404.200
• CPC Class Codes: G08B 25/016 Personal emergency signalling and security systems emergency non-personal manually actuated alarm activators G08B25/12
• CPC Class Codes: H04Q 2213/1337 Operator, emergency services
• CPC Class Codes: H04Q 3/0029 Provisions for intelligent networking
• CPC Class Codes: H04W 4/90 Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
• CPC Class Codes: H04W 60/00 Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
• CPC Class Codes: H04W 76/50 for emergency connections
• CPC Class Codes: H04W 8/10 between location register and external networks

Abstract

A system with a mobile switching center (MSC), a service control point (SCP) and an emergency center (EC). The mobile switching center (MSC) sets up a call between a mobile station (2(i)) and the emergency center (EC), sends first data including raw location data as to where the mobile station (2(i)) is located to the emergency center (EC), and sends a service invocation to the service control point (SCP) to invoke an Intelligent Network service to start searching for second data relating to the mobile station, including more accurate location data as to where the mobile station is located. The service control point (SCP) receives the service invocation, starts the Intelligent Network service to search for the second data and sends the second data to the emergency center (EC) once said second data becomes available.

Claims

1. Method of setting up a telephone connection for a telephone call, comprising:

setting up said telephone connection for said telephone call between a mobile station and an emergency center;

sending first data including at least raw location data as to where said mobile station is located to said emergency center via said telephone connection;

displaying said first data to an operator in said emergency center;

invoking an Intelligent Network service to start searching for second data relating to said mobile station, including more accurate location data as to where said mobile station is located;

sending said second data from said Intelligent Network service to said emergency center once said second data becomes available;

displaying said second data to said operator in said emergency center once said second data is received.

2. Method as claimed in claim 1, wherein said method comprises invoking said Intelligent Network service in a notification mode such that said Intelligent Network service is unable to control said telephone connection between said mobile station and said emergency center.

3. Method according to claim 1 or 2, wherein said first data comprises also at least one of the following:

a calling party number;

an International Mobile Equipment Identifier (IMEI) associated with said mobile station;

an International Mobile Subscriber Identifier (IMSI) associated with said mobile station;

a Global Call Reference Number (GCRN) associated with said telephone call;

a mobile switching center address (MSCA) of a mobile switching center (MSC) that has set up said telephone connection;

4. Method according to any of the preceding claims, wherein said telephone call is based on an ISDN User Part (ISUP) flow.

5. Method according to any of the preceding claims, wherein said invoking said Intelligent Network service comprises sending at least one of the following to the Intelligent Network service:

an International Mobile Equipment Identifier (IMEI) associated with said mobile station;

an International Mobile Subscriber Identifier (IMSI) associated with said mobile station;

a Mobile Subscriber ISDN (MSISDN) associated with said mobile station;

a Global Call Reference Number (GCRN) associated with said telephone call;

a mobile switching center address (MSCA) of a mobile switching center (MSC) that has set up said telephone connection;

a called party number used by a mobile switching center to establish said telephone connection with said emergency center;

said raw location data.

6. Method according to claim 5, wherein said Intelligent Network service is arranged to perform at least one of the following functions:

to search for said more accurate location data using at least one of said Mobile Subscriber ISDN (MSISDN), International Mobile Subscriber Identification (IMSI), International Mobile Equipment Identification (IMEI) and said address of said mobile switching center (MSCA);

to search for home operator information associated with said mobile station using at least one of said Mobile Subscriber ISDN (MSISDN) and said International Mobile Subscriber Identification (IMSI);

to search for an International Mobile Equipment Identification status of said mobile station using said International Mobile Equipment Identification (IMEI);

to search for a fraud status of said mobile station using said Mobile Subscriber ISDN (MSISDN);

to search for a name of a person registered as being owner of said mobile station using said Mobile Subscriber ISDN (MSISDN).

7. Method according to any of the preceding claims, wherein said first data comprises first identifying data and said second data comprises second identifying data, said first identifying data and said second identifying data being used in said emergency center to correlate said first data and second data to one another.

8. Method according to claim 7, wherein said first identifying data and said second identifying data comprise a call reference number identifying said telephone call and a mobile switching center address of a mobile switching center that has set up said telephone connection.

9. Method according to any of the preceding claims wherein said raw location data comprises at least one of a location number (LN), a cell global identifier (CGI), a service area identifier (SAI) and Geodetic Information (GI).

10. Method according to any of the preceding claims, wherein said telephone connection is set up using the public switched telephone network (8) and said second data is sent via the Internet.

11. A system for setting up a telephone connection for a telephone call, comprising a mobile switching center (MSC), a service control point (SCP) and an emergency center (EC),

said mobile switching center (MSC) being arranged to:

set up said telephone connection for said telephone call between a mobile station (2(i)) and said emergency center (EC);

send a service invocation to said service control point (SCP) to invoke an Intelligent Network service to start searching for second data relating to said mobile station, including more accurate location data as to where said mobile station is located;

send first data including raw location data as to where said mobile station (2(i)) is located to said emergency center (EC) via said telephone connection.

said service control point (SCP) being arranged to

receive said service invocation from said mobile switching center (MSC);

start said Intelligent Network service to search for said second data relating to said mobile station, including more accurate location data as to where said mobile station is located;

send said second data from said Intelligent Network service to said emergency center (EC) once said second data becomes available;

said emergency center (EC) being arranged to;

receive said first data and display said first data to an operator in said emergency center (EC);

receive said second data, correlate it to said first data and display said second data to said operator in said emergency center (EC) once said second data is received.

12. System according to claim 11, wherein

said service control point (SCP) is arranged to receive a request from an emergency center (EC) for said second data and correlate said request with said service invocation prior to starting said Intelligent Network service, and

said emergency center (EC) is arranged to send said request for said second data after having received said first data.

13. A mobile switching center (MSC) arranged to:

set up a telephone connection for a telephone call between a mobile station (2(i)) and an emergency center (EC);

send a service invocation to a service control point (SCP) to invoke an Intelligent Network service to start searching for second data relating to said mobile station, including more accurate location data as to where said mobile station is located;

send first data including raw location data as to where said mobile station (2(i)) is located to said emergency center (EC) via said telephone connection.

14. Mobile switching center according to claim 13, wherein said mobile switching center is arranged to send information in an ISUP flow over said telephone connection with said emergency center (EC).

15. Mobile switching center according to claim 14, wherein said mobile station is associated with an International Mobile station Equipment Identity (IMEI) and said mobile switching center uses a first Number Qualifier value of a Generic Number within said ISUP flow to said International Mobile station Equipment Identity (IMEI).

16. Mobile switching center according to claim 14 or 15, wherein said mobile station is associated with an International Mobile Subscriber Identity (IMSI) and said mobile switching center uses a second Number Qualifier value of said Generic Number within said ISUP flow to said International Mobile Subscriber Identity (IMSI).

17. A method performed in a mobile switching center, comprising:

setting up a telephone connection for a telephone call between a mobile station (2(i)) and an emergency center (EC);

sending a service invocation to a service control point (SCP) to invoke an Intelligent Network service to start searching for second data relating to said mobile station, including more accurate location data as to where said mobile station is located;

sending first data including raw location data as to where said mobile station (2(i)) is located to said emergency center (EC) via said telephone connection.

18. A computer program product comprising data and instructions arranged to provide a mobile switching center with the capacity to perform the method of claim 17.

19. A data carrier comprising a computer program product as claimed in claim 18.

20. A service control point (SCP) being arranged to:

receive a service invocation from a mobile switching center (MSC);

start an Intelligent Network service to search for second data relating to a mobile station, including more accurate location data as to where said mobile station is located;

send said second data from said Intelligent Network service to an emergency center (EC) once said second data becomes available.

21. Service control point (SCP) according to claim 20, being arranged to:

receive a request from an emergency center (EC) for second data;

correlate said request with said service invocation received from said mobile switching center (MSC); and

start said Intelligent Network service.

22. A method performed in a service control point (SCP), comprising:

receiving a service invocation from a mobile switching center (MSC);

starting an Intelligent Network service to search for second data relating to a mobile station, including more accurate location data as to where said mobile station is located;

sending said second data from said Intelligent Network service to an emergency center (EC) once said second data becomes available.

23. Method performed in a service control point (SCP) in accordance with claim 22, comprising:

receiving a request from an emergency center (EC) for second data;

correlating said request with said service invocation received from said mobile switching center (MSC); and

starting said Intelligent Network service.

24. A computer program product comprising data and instructions arranged to provide a Service Control Point with the capacity to perform the method of claim 22 or claim 23.

25. A data carrier comprising a computer program product as claimed in claim 24.

26. An emergency center (EC) being arranged to:

receive a telephone connection with a mobile station (2(i)) via a mobile switching center (MSC);

receive first data from said mobile switching center, said first data including raw location data as to where said mobile station (2(i)) is located, and display said first data to an operator in said emergency center (EC);

receive a further connection with a service control point (SCP);

receive second data from said service control point (SCP);

display said second data to said operator in said emergency center (EC) once said second data is received.

27. Emergency center (EC) in accordance with claim 26, being arranged to:

initiate establishment of a further connection with a service control point (SCP) after having received said first data;

request said second data from said service control point (SCP).

28. A method performed in an emergency center, comprising:

receiving a telephone connection with a mobile station (2(i)) via a mobile switching center (MSC);

receiving first data from said mobile switching center, said first data including raw location data as to where said mobile station (2(i)) is located, and displaying said first data to an operator in said emergency center (EC);

receiving a further connection with a service control point (SCP);

receiving second data from said service control point (SCP);

displaying said second data to said operator in said emergency center (EC) once said second data is received.

29. Method performed in an emergency center in accordance with claim 28, comprising:

requesting said second data from said service control point (SCP) after having received said first data.

30. A computer program product comprising data and instructions arranged to provide an emergency center with the capacity to perform the method of claim 28 or claim 29.

31. A data carrier comprising a computer program product as claimed in claim 30.