Call pickup group controlled by wireless terminals
US6292672A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 29, 1998 |
| Grant date | Sep 18, 2001 |
| Priority date | — |
| Expiry date | Oct 29, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2242/30
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A wireless terminal dynamically positions itself into a call pickup group based on the location of the wireless terminal. Similarly, a wireless terminal dynamically removes itself from a call pickup group on the basis of the location of the wireless terminal. A wireless terminal can be excluded from joining a call pickup group in a specific location. The wireless terminal positions itself into the call pickup group by communicating information with other wireless terminals already in the call pickup group. This communication is controlled by a controlling wireless terminal with which the wireless terminal first communicates upon entering the location. The wireless terminal determines its position by communication with a fixed unit assigned to the location of call pickup group. Upon determining that it is leaving the location, the wireless terminal transmits a message to controlling wireless terminal to inform it of this fact. In turn, the controlling wireless terminal transmits messages to the other wireless terminals to inform them of the departure of the wireless terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.