Frequency control

Details Frequency control Frequency control

2007-11-08

2011-10-18

Agosta, Steve D (Department: 2617)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S013200, C455S063300, C455S432100, C455S435100, C455S436000, C455S455000, C370S310200, C370S324000, C370S328000, C370S329000, C370S331000

Reexamination Certificate

active

08041352

ABSTRACT:
The invention provides for a mobile radio communications device, and related method, arranged for communication by way of at least two RATs and having at least first and second RAT systems and related respective automatic frequency controls for control of an internal clock of the device, the mobile radio communications device further including a search frequency controller for controlling the internal clock during an initial network search, the frequency controller and related method steps being arranged to be initiated at a nominal correction value at the start of the search procedure, and to depart from the said nominal value responsive to one of a receipt of a valid frequency error reading, or receipt of a request for a raster step during an initial network search procedure.

REFERENCES:
patent: 5933785 (1999-08-01), Tayloe
patent: 7444166 (2008-10-01), Sahota
patent: 1 422 962 (2004-05-01), None
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patent: 2 395 622 (2004-05-01), None
patent: 2 425 233 (2006-10-01), None
European Search Report dated May 10, 2007.

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