Voice over internet protocol (VoIP) E911 metro street address guide (MSAG) validation
First Claim
Patent Images
1. A method of providing location information to a requesting device, comprising:
- receiving, at a physical server, latitude/longitude information associated with a voice-over-Internet-protocol (VoIP) caller device;
associating, at said physical server, said latitude/longitude information with a pre-defined geographic polygon enclosing said latitude/longitude from a polygon street validation database including a plurality of pre-defined geographic polygons;
retrieving, at said physical server, a validated street address associated with a center area point of said geographic polygon; and
routing said validated street address associated with said geographic polygon to a public safety answering point (PSAP);
wherein said pre-defined geographic polygon is associated with a unique validated street address.
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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.
214 Citations
16 Claims
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1. A method of providing location information to a requesting device, comprising:
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receiving, at a physical server, latitude/longitude information associated with a voice-over-Internet-protocol (VoIP) caller device; associating, at said physical server, said latitude/longitude information with a pre-defined geographic polygon enclosing said latitude/longitude from a polygon street validation database including a plurality of pre-defined geographic polygons; retrieving, at said physical server, a validated street address associated with a center area point of said geographic polygon; and routing said validated street address associated with said geographic polygon to a public safety answering point (PSAP); wherein said pre-defined geographic polygon is associated with a unique validated street address. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of providing a validated street address to a requesting device, comprising:
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receiving a request for a validated street address of a given Voice over Internet Protocol (VoIP) calling device; obtaining a current latitude/longitude (lat/lon) of said VoIP calling device from a physical VoIP positioning center (VPC) server; mapping said lat/lon of said VoIP calling device into one of a plurality of pre-defined geographic polygons maintained in a polygon street validation database; providing a validated street address associated with a center area point of a one of said plurality of pre-defined geographic polygons enclosing said lat/lon of said VoIP calling device; wherein said lat/lon of said VoIP calling device is enclosed by only one of said plurality of pre-defined geographic polygons maintained in said polygon street validation database. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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Specification