Voice over internet protocol (VoIP) E911 metro street address guide (MSAG) validation

• US 20070041368A1
• Filed: 05/30/2006
• Published: 02/22/2007
• Est. Priority Date: 05/27/2005
• Status: Active Grant

• Current Assignee: TeleCommunication Systems Inc (Comtech Telecommunications Corporation)
• Original Assignee: TeleCommunication Systems Inc (Comtech Telecommunications Corporation)
• Inventors: Lorello, Timothy
• Granted Patent: US 7,945,026 B2
• Time in Patent Office: Days
• US Class Current: 370/352
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/401 wherein the services involve a main real-time session and one or more additional parallel real-time or time sensitive sessions, e.g. white board sharing or spawning of a subconference
• CPC Class Codes: H04L 67/52 specially adapted for the location of the user terminal
• CPC Class Codes: H04M 2242/04 for emergency applications
• CPC Class Codes: H04M 2242/30 Determination of the location of a subscriber
• CPC Class Codes: H04M 7/006 Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP) , including next generation networks with a packet-switched transport layer H04L65/00 takes precedence; aspects not specific to the type of network H04M3/00; special services in those networks H04M3/42

Abstract

An overlay list of MSAG-valid addresses is created for use in lieu of (or in addition to) the lat/lon or postal address which otherwise would go with an E911 VoIP 911 call. This overlays the nation with a series of MSAG-addressed polygons, with center points identified in those polygons, and MSAG-valid addresses provided to the PSAPs for those centers, preferably along with the original latitude/longitude coordinates.

Claims

1. A metro street address guide (MSAG) validation database, comprising:

a plurality of validated street addresses;

wherein each of said plurality of validated street addresses is correlated with a polygon area defined by latitude/longitude coordinates.

2. The metro street address guide (MSAG) validation database according to claim 1, wherein:

at least some, but not all, of said plurality of validated street addresses are defined by a street address of a corresponding cell tower.

3. A method of generating entries in an MSAG validation database, comprising:

defining, in an MSAG validation database, a plurality of newly defined MSAG-addressed polygons having a greater density than a plurality of existing MSAG-addressed polygons; and

replacing, in said MSAG validation database, said plurality of existing MSAG-addressed polygons with said plurality of newly defined MSAG-addressed polygons.

4. The method of generating entries in an MSAG validation database according to claim 3, wherein:

each of said plurality of newly defined MSAG-addressed polygons is defined by a single street address.

5. The method of generating entries in an MSAG validation database according to claim 4, wherein:

said single street address is a street address of an approximate center of each of said respective plurality of newly defined MSAG-addressed polygons.

6. The method of generating entries in an MSAG validation database according to claim 3, wherein:

each of said plurality of existing MSAG-addressed polygons is defined by a single street address.

7. The method of generating entries in an MSAG validation database according to claim 6, wherein:

said single street address is a street address of an approximate center of each of said respective plurality of existing MSAG-addressed polygons.

8. The method of generating entries in an MSAG validation database according to claim 3, wherein:

each of said plurality of newly defined MSAG-addressed polygons are defined by a plurality of latitude/longitude coordinates.

9. The method of generating entries in an MSAG validation database according to claim 3, wherein:

each of said plurality of existing MSAG-addressed polygons are defined by a plurality of latitude/longitude coordinates.

10. The method of generating entries in an MSAG validation database according to claim 3, wherein:

said number of newly defined MSAG-addressed polygons is greater than said number of existing MSAG-addressed polygons.

11. Apparatus for generating entries in an MSAG validation database, comprising:

means for defining, in an MSAG validation database, a plurality of newly defined MSAG-addressed polygons having a greater density than a plurality of existing MSAG-addressed polygons; and

means for replacing, in said MSAG validation database, said plurality of existing MSAG-addressed polygons with said plurality of newly defined MSAG-addressed polygons.

12. The apparatus for generating entries in an MSAG validation database according to claim 11, wherein:

each of said plurality of newly defined MSAG-addressed polygons is defined by a single street address.

13. The apparatus for generating entries in an MSAG validation database according to claim 12, wherein:

said single street address is a street address of an approximate center of each of said respective plurality of newly defined MSAG-addressed polygons.

14. The apparatus for generating entries in an MSAG validation database according to claim 11, wherein:

each of said plurality of existing MSAG-addressed polygons is defined by a single street address.

15. The apparatus for generating entries in an MSAG validation database according to claim 14, wherein:

said single street address is a street address of an approximate center of each of said respective plurality of existing MSAG-addressed polygons.

16. The apparatus for generating entries in an MSAG validation database according to claim 11, wherein:

each of said plurality of newly defined MSAG-addressed polygons are defined by a plurality of latitude/longitude coordinates.

17. The apparatus for generating entries in an MSAG validation database according to claim 11, wherein:

each of said plurality of existing MSAG-addressed polygons are defined by a plurality of latitude/longitude coordinates.

18. The apparatus for generating entries in an MSAG validation database according to claim 11, wherein:

said number of newly defined MSAG-addressed polygons is greater than said number of existing MSAG-addressed polygons.