Method and system for providing location information for a wireless local area network (WLAN)
US7433673B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2004 |
| Grant date | Oct 7, 2008 |
| Priority date | — |
| Expiry date | Jun 3, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Each wireless access point in a wireless local area network (WLAN) is allocated a set of one or more identifiers. A correlation database stores information that relates the geographic location of each wireless access point and the identifiers allocated to it. When a mobile node associated with a wireless access point in the WLAN originates a 9-1-1 or other emergency call, one of the wireless access point's identifiers is included in the call origination request. By querying the correlation database, the wireless access point's geographic location may be determined from the identifier. When a public safety answering point (PSAP) answers the mobile node's call, the PSAP may obtain the geographic location of the wireless access point with which the mobile node is associated. This location information could be pushed to the PSAP, or the PSAP could obtain the location information by querying the correlation database.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.