Associating metro street address guide (MSAG) validated addresses with geographic map data
Master Street Address Guide (MSAG)-validated street address data is correlated with real-world geographic (e.g., latitude/longitude) data. Conventional MSAG-validated street address data is processed, or geocoded, into an additional (or integrated) database that associates latitude/longitude information with a particular entry in the existing MSAG-validated database. The association of the lat/lon data may be direct, or indirect using link ID or other unique tags indicating a particular entry in the MSAG-validated database. The geocoding need be performed only once by a service provider, e.g., as part of the deployment of an emergency service system. In this way, the closest public service answering point (PSAP) to a given latitude/longitude position of a wireless or VoIP device may be determined quickly, providing emergency services with the smallest possible reliable response time.
1. Apparatus for mapping a current lat/lon location of a wireless device into a Master Street Address Guide (MSAG)-validated street address, comprising:
means for obtaining a current latitude/longitude (lat/lon) location of a wireless device;
means for looking-up a pre-determined closest unique road link ID associated with said obtained current lat/Ion location; and
means for accessing an MSAG database to determine an MSAG-validated street address associated with said unique road link ID;
wherein a given length of road is divided into a plurality of road links each associated with its own unique road link ID; and
wherein said unique road link ID is associated with a two-dimensional area of said given length of road including a range of latitude coordinates and a range of longitudinal coordinates, said current lat/lon location falling within said range of latitude coordinates and within said range of longitudinal coordinates.
2. The apparatus for mapping a current lat/lon location of a wireless device into an MSAG-validated street address according to claim 1 , further comprising:
means for extracting an emergency services number (ESN) associated with said MSAG-validated street address.
3. The apparatus for mapping a current lat/lon location of a wireless device into an MSAG-validated street address according to claim 2 , wherein:
said wireless device is a Voice over Internet Protocol (VoIP) phone.
4. The apparatus for mapping a current lat/lon location of a wireless device into an MSAG-validated street address according to claim 2 , further comprising:
means for routing a call from said wireless device based on said extracted ESN.
5. Apparatus for mapping a current lat/lon location of a wireless device into a Master Street Address Guide (MSAG)-validated street address, comprising:
means for obtaining a current latitude/longitude (lat/lon) location of a wireless device;
means for looking-up a pre-determined closest unique road link ID associated with said obtained current lat/Ion location; and
means for accessing an MSAG database to determine an MSAG-validated street address associated with said unique road link ID;
wherein a given length of road is divided into a plurality of road links each associated with its own unique road link ID; and
wherein said given length of road is divided at crossroads, driveways and locations where street address numbers change.
6. The apparatus for mapping a current lat/lon location of a wireless device into an MSAG-validated street address according to claim 5 , further comprising:
means for extracting an emergency services number (ESN) associated with said MSAG-validated street address.
7. The apparatus for mapping a current lat/lon location of a wireless device into an MSAG-validated street address according to claim 6 , wherein:
said wireless device is a Voice over Internet Protocol (VoIP) phone.
8. The apparatus for mapping a current lat/lon location of a wireless device into an MSAG-validated street address according to claim 6 , further comprising:
means for routing a call from said wireless device based on said extracted ESN.
9. Apparatus for mapping a current lat/lon location of a wireless device into a street address, comprising:
means for obtaining a current latitude/longitude (lat/lon) location of a wireless device;
means for looking-up a pre-determined closest unique road link ID associated with said obtained current lat/Ion location;
means for accessing an MSAG database to determine a Master Street Address Guide (MSAG)-validated street address associated with said unique road link ID; and
means for associating an emergency services number (ESN) with said unique road link ID;
wherein a given length of road is divided into a plurality of road links each associated with its own unique road link ID.
10. The apparatus for mapping a current lat/lon location of a wireless device into an MSAG-validated street address according to claim 9 , further comprising:
means for extracting an emergency services number (ESN) associated with said MSAG-validated street address.
11. The apparatus for mapping a current lat/lon location of a wireless device into an MSAG-validated street address according to claim 10 , wherein:
said wireless device is a Voice over Internet Protocol (VoIP) phone.
12. The apparatus for mapping a current lat/lon location of a wireless device into an MSAG-validated street address according to claim 10 , further comprising:
means for routing a call from said wireless device based on said extracted ESN.