Method and apparatus for idle handoff in a cellular system
US6400952B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 1999 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Sep 8, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W48/20
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Method and apparatus for an idle state handoff in a cellular system includes the steps of transmitting by a current base station to a mobile telephone information regarding a frequency assignment of the neighboring base stations and a list of the neighboring base stations. A pilot signal is detected from the neighboring base stations by the mobile telephone, and it is then determined whether the detected neighboring base station is included in the list of the neighboring base stations. If the detected neighboring base station is not included in the list, it recognized as a handoff failure. If the detected neighboring base station is included in the list of the neighboring base stations, a determination as to whether the detected pilot signal is a dummy pilot signal by referring to the frequency assignment information. A frequency corresponding to the neighboring base station must be determined if the pilot signal is a dummy signal in order to perform the idle state handoff. Detection of the paging channel from the decided handoff frequency is performed. An apparatus of the present invention includes a mobile telephone for detecting pilot signals of the neighboring base stations and…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.