Method and apparatus for call recovery after a power cut for a CDMA cellular phone
US6895033B1 · kind B1 · utility
1Cited by
7References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2000 |
| Grant date | May 17, 2005 |
| Priority date | — |
| Expiry date | Mar 29, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/70756
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A first sequence state storage module (20) periodically stores a present state (22) of a long code generator (30). Following a restoration of power after a power cut condition, or following the termination of any other interruption of the generation of the long code, a sequence recovery module (50) then provides an updated present state (36). The updated present state (36) is based upon a stored present state (24) and a time value (52) that is reset whenever the present state (22) of the long code or other sequence is stored and that is available even when the long code or other sequence is interrupted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.