The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 11, 2004
Filed:
May. 09, 2000
Applicant:
Inventors:
Arnaud Parisel, Paris, FR;
Xavier Dugast, Chatou, FR;
Assignee:
Alcatel, Paris, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 1/06 ; H04B 7/00 ;
U.S. Cl.
CPC ...
H04B 1/06 ; H04B 7/00 ;
Abstract
To address the problem of aging and drift of a local oscillator in a mobile telephone the frequency Fi of the local oscillator is shifted upwards so that base station logging-on FCH signals are measured perfectly whether said drift is upwards or downwards. It is shown that the actual drift resulting from the initial shift and drift with time can be measured during logging on. It is shown that conforming to the standard is facilitated without having to provide an oscillator whose frequency stability with time is guaranteed.