Methods and systems for delivering presence information regarding push-to-talk subscribers
US7146181B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2004 |
| Grant date | Dec 5, 2006 |
| Priority date | — |
| Expiry date | Sep 23, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W4/10
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods and system for delivering presence information regarding push-to-talk subscribers are disclosed. In one method, a short message gateway receives presence information from a first push-to-talk subscriber from a presence or push-to-talk server. The short message gateway determines the location and availability of a second push-to-talk subscriber to which the presence information is directed. If the second push-to-talk subscriber is available, the SMS gateway delivers the presence information to the second push-to-talk subscriber in a manner that bypasses the SMSC. If the SMS gateway determines that the second push-to-talk subscriber is not available, the SMS gateway discards the presence information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.