Spread spectrum wireless communications device
US6421373B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 20, 1999 |
| Grant date | Jul 16, 2002 |
| Priority date | — |
| Expiry date | Dec 20, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2201/70702
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
There is disclosed a spread spectrum wireless communications device capable of conducting a pilot search for a frequency different from the traffic-channel frequency used in a conversation while suppressing deterioration of voice quality. One frame is selected from every 5 frames such that the selected frames are not adjacent to each other. The reception frequency (searched frequency) is switched from frequency f1 used for communication to other frequency f2 during the period of any one of the selected frames. During the periods (e.g., N1-1, N1-2, and N1-3) of plural ones (e.g., 3 frames) of the frames in which f2 is being received, neighboring sets are searched for phases continuously.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.