Wireless communications device allowing a soft handoff procedure in a mobile communications system
US6728528B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 28, 1999 |
| Grant date | Apr 27, 2004 |
| Priority date | — |
| Expiry date | Jun 28, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/02
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A wireless communications device includes an antenna that receives a first signal at a first radio frequency and a second signal at a second radio frequency and converts the first and second signals into a composite radio frequency (RF) signal. A first oscillator outputs a first oscillator signal at a first frequency and a second oscillator outputs a second oscillator signal at a second frequency. A demodulator receives the composite RF signal and the first and second oscillator signals. The oscillator signals are selected so that the demodulator generates a low frequency signal with components of the first and second signals occupying a common frequency band. The wireless communications device allows executing a “Soft Handoff” even when the first and second radio frequencies are different.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.