Automated location determination to support VoIP E911 using self-surveying techniques for Ad Hoc wireless network
First Claim
1. A method of obtaining location information using self-surveying location based technique in a Voice over Internet Protocol (VoIP) network, comprising:
- establishing contact between a requesting wireless network device and an Ad-Hoc wireless network;
obtaining location information relevant to at least three other members of said Ad-Hoc wireless network; and
meshing said obtained location information relevant to said at least three other members of said Ad-Hoc wireless network into an approximate location or precise position, based on methods employed, of said requesting wireless network device;
whereas members of said Ad-Hoc wireless network are able to obtain location information even in a non-open sky environment.
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Accused Products
Abstract
Network devices in an Ad-Hoc wireless network self-survey themselves as necessary for approximate location or precise position information, based on methods employed, particularly useful for a non-open-sky environment. A WiFi Access Point (AP) with or without an internal GPS receiver and location conveyance support may utilize the mesh technique. If an Ad-Hoc network device is unable to contact a suitable location server, or a position request has otherwise failed to deliver a precise position, a WiFi AP is manually configured with appropriate location information, and then offers itself as if it were a location server (thereby becoming an ‘internal’ server’, containing either the determined or provisioned location of itself, for use by other APs or devices). A location server (either internal to the AP needing location, or external), performs a ‘mesh’ location determination by selecting position information from 3 or more location determined APs for subsequent processing.
117 Citations
16 Claims
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1. A method of obtaining location information using self-surveying location based technique in a Voice over Internet Protocol (VoIP) network, comprising:
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establishing contact between a requesting wireless network device and an Ad-Hoc wireless network; obtaining location information relevant to at least three other members of said Ad-Hoc wireless network; and meshing said obtained location information relevant to said at least three other members of said Ad-Hoc wireless network into an approximate location or precise position, based on methods employed, of said requesting wireless network device; whereas members of said Ad-Hoc wireless network are able to obtain location information even in a non-open sky environment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. Apparatus for obtaining location information using self-surveying location based technique in a Voice over Internet Protocol (VoIP) network, comprising:
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means for establishing contact between a requesting wireless network device and an Ad-Hoc wireless network; means for obtaining location information relevant to at least three other members of said Ad-Hoc wireless network; and means for meshing said obtained location information relevant to said at least three other members of said Ad-Hoc wireless network into an approximate location or precise position, based on methods employed, of said requesting wireless network device; whereas members of said Ad-Hoc wireless network are able to obtain location information even in a non-open sky environment. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification