Method and apparatus for performing handoff in a spread-spectrum communication system
US6449305B1 · kind B1 · utility
21Cited by
6References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 10, 1996 |
| Grant date | Sep 10, 2002 |
| Priority date | — |
| Expiry date | Jan 12, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W56/00
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Handoff from a Code-Division, Multiple Access (CDMA) protocol to an Advanced Mobile Phone Service (AMPS) protocol occurs by comparing a remote unit's (405) phase shift measurement to a threshold (503) and determining a reference CDMA base station (401) from an active set of CDMA base stations (515). Next, corrected phase shifts are calculated for each CDMA base station in the active set (521) and the remote unit (405) is handed off to an AMPS base station (109) underlying the CDMA coverage area (126) having the smallest corrected phase shift (525).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.