Methods and devices for asynchronous operation of a CDMA mobile communication system
US6873612B1 · kind B1 · utility
35Cited by
5References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1998 |
| Grant date | Mar 29, 2005 |
| Priority date | — |
| Expiry date | Oct 30, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W92/20
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A CDMA mobile communication system is operated asynchronously while using common forward channel PN and Walsh codes. Such operation is enabled by devices in the system that provide measurements of the instantaneous offsets between PN codes of neighboring base stations. Knowledge of instantaneous offsets may be maintained and used to identify base station signals to enable handovers to neighboring base stations. Instantaneous offsets may also be processed over time to identify states of imminent collision so that corrective action can be taken to avoid or minimize collision effects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.