Soft handover method for CDMA mobile communication system
US7006473B2 · kind B2 · utility
6Cited by
7References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 18, 2002 |
| Grant date | Feb 28, 2006 |
| Priority date | — |
| Expiry date | Aug 2, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W36/302
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The invention discloses a CDMA soft handover method which can be used in present code division multiple access systems. The invention preserves current soft handover mechanisms triggered by a pilot signal strength variation measured by a mobile station. At the same time it introduces a communication quality indication parameter—continuous error frame indication measured by mobile station. Both function together to launch and to activate system soft handover. Without changing present soft handover processes, soft handover performance is improved, possibility of lost conversation is decreased and communication quality is raised.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.