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Wireless communications device allowing a soft handoff procedure in a mobile communications system
   
Document Number
US Patent 7123891
Issued Date
October 17, 2006
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Abstract
A wireless communications device includes an antenna that receives a first signal at a first frequency and a second signal at a second frequency and converts the first and second signals into a composite 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 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 frequencies are different.
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Number of Claims:
52
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Published
October 17, 2006
Application Number
10/850,804
Filed
May 21, 2004
US Classification
455/130   331/2 455/141 455/318 455/323 455/442
Int'l Classification
G06F   3/033   (20060101)  
Examiner
Attorney/Law Firm
Parent Case
This application is a continuation in part of U.S. application Ser. No. 10/829,784, filed on Apr. 22, 2004, which is a continuation of U.S. application Ser. No. 09/342,165, filed on Jun. 28, 1999, now U.S. Pat. No. 6,728,528, the entirety of which are hereby incorporated herein by reference.
USPTO Field of Search
455/436   455/437   455/438   455/439   455/442   455/436   455/437   455/438   455/439   455/318   455/323   375/340   375/343   375/331   370/331   370/335   370/342   331/1R   331/2   331/23  
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