Emergency intersystem paging for emergency call back

• US 20040203573A1
• Filed: 01/13/2003
• Published: 10/14/2004
• Est. Priority Date: 01/13/2003
• Status: Active Grant

• Current Assignee: RPX Corporation
• Original Assignee: Alcatel-Lucent USA, Inc. (Nokia Corporation)
• Inventors: Rollender, Douglas H., Chin, Mary W.
• Granted Patent: US 7,565,130 B2
• Time in Patent Office: Days
• US Class Current: 455/404.1
• 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 68/00 User notification, e.g. alerting and paging, for incoming communication, change of service or the like
• CPC Class Codes: H04W 68/12 Inter-network notification
• CPC Class Codes: H04W 76/50 for emergency connections

Abstract

In the method of emergency service call back in a wireless system, an emergency intersystem page is sent from a first system to a second system such that the emergency intersystem page is identifiable as requesting paging of a mobile station for an emergency call back. The second system receives the mobile station identifier (MSID) and mobile equipment identity (MEID) of the paged mobile station from the first system in or with the emergency intersystem page, and uses the MSID to page the mobile station. The second system verifies the page response is from the paged mobile station using the MEID received from the responding mobile station and the MEID received in association with the emergency intersystem page. The emergency call back can then be completed when the mobile station is verified.

Claims

1. A method of emergency service call back in a wireless system, comprising:

sending an emergency intersystem page from a first system to a second system such that the emergency intersystem page is identifiable as requesting paging of a mobile station for an emergency call back.

2. The method of claim 1, wherein the sending step sends a mobile station identifier of the mobile station being paged in the emergency intersystem page.

3. The method of claim 2, wherein the sending step sends a mobile equipment identity of the mobile station being paged in the emergency intersystem page.

4. The method of claim 3, wherein the mobile station identifier is a default mobile station identifier.

5. The method of claim 1, wherein the sending step sends a mobile equipment identity of the mobile station being paged in the emergency intersystem page.

6. The method of claim 1, wherein the sending step sends the intersystem page when the mobile station being paged in the intersystem page fails to respond to an in-system page within a predetermined period of time.

7. The method of claim 1, further comprising:

receiving, at a switch of the first system, a called party number and a mobile equipment identity;

paging, in-system, the mobile station identified by the mobile equipment identity when the called party number matches an emergency routing number assigned to the switch; and

wherein

the sending step sends the emergency intersystem page for the mobile station identified by the mobile equipment identity if no page response is received from the mobile station identified by the mobile equipment identity within a predetermined period of time after paging the mobile station.

8. The method of claim 7, wherein the receiving a called party number and a mobile equipment identity step receives the mobile equipment identity in a generic address parameter.

9. The method of claim 7, wherein the in-system paging step is performed with priority over other tasks at the switch.

10. The method of claim 7, wherein the switch is a mobile switching center.

11. The method of claim 7, wherein the in-system paging step comprises:

retrieving a mobile station identifier for the mobile station from a mapping table using the received mobile equipment identity; and

paging the mobile station using the retrieved mobile station identifier.

12. The method of claim 11, wherein the mobile station identifiers in the mapping table are default mobile station identifiers.

13. The method of claim 1, wherein the sending step sends the emergency intersystem page such that the emergency intersystem page is identified as requesting paging of a mobile station for which no registration, validation and authentication is required.

14. A method of emergency service call back in a wireless system, comprising:

receiving an emergency intersystem page from a first system at a second system such that the emergency intersystem page is identifiable as requesting paging of a mobile station for an emergency call back; and

paging the mobile station.

15. The method of claim 14, wherein

the receiving step receives a mobile station identifier identifying the mobile station;

and

the paging step pages the mobile station using the mobile station identifier.

16. The method of claim 15, wherein

the receiving step receives a mobile equipment identity of the mobile station.

17. The method of claim 16, further comprising:

receiving a page response and a mobile equipment identity from a responding mobile station; and

participating in completion of the emergency call back to the responding mobile station in response to the page response when the mobile equipment identity of the responding mobile station matches the mobile equipment identity received in association with the emergency inter-system page.

18. The method of claim 16, wherein the mobile station identifier is a default mobile station identity.

19. The method of claim 14, wherein the paging step is performed with priority over other tasks at the second system.

20. The method of claim 14, wherein the receiving step receives an emergency intersystem page such that the emergency intersystem page is identified as requesting paging of a mobile station for which no registration, validation and authentication is required.