Method and system for providing a soft handoff in communications in a CDMA cellular telephone system
US5101501A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 1989 |
| Grant date | Mar 31, 1992 |
| Priority date | — |
| Expiry date | Nov 7, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2201/70701
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a cellular telephone system a system for directing communications between a mobile user and cell-sites as a mobile user changes cell-site service areas. The mobile user includes an apparatus for, while in communication with another system user via one cell-site, determining a transition of the mobile user from the cell-site service area to the service area of another cell-site. The system includes circuitry responsive to the indication for coupling communications between the mobile user and the other system user via the new cell-site while the mobile user also remains in communication with the system user via the first cell-site. The system further includes apparatus responsive to the coupling of the communications between the mobile user and the other system user via the new cell-site for terminating the communications between the mobile user and another system user via cell-site with communications continuing between the mobile user and the system user via the new cell-site.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.