Method and system for presence determination of mobile devices
US7809380B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2009 |
| Grant date | Oct 5, 2010 |
| Priority date | — |
| Expiry date | Feb 26, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/04
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A presence server for determining presence of a mobile station in a mobile network, including structure and/or function to: receive a request for a presence indication that the mobile station is active; send a first query into the mobile network based on the request; receive a response to the first query; and, if the response indicates the mobile station is active then: provide the presence indication; if the response indicates the mobile station is not active then: send a second query into the mobile network for establishing a notification trigger; receive a second query response based on the notification trigger; the second query response including the presence indication and being based on short message service (“SMS”); and provide the presence indication based on the second query response.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.