Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2003-02-12
2008-11-11
Gelin, Jean A (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S422100, C455S552100
Reexamination Certificate
active
07450943
ABSTRACT:
Techniques to determine whether or not a terminal is under the coverage of a current wireless communication system (e.g., a packet data system) and to switch from the current system to another wireless communication system (e.g., a voice/data system). In one method, at least one measurement of at least one parameter for at least one base station in the current system is initially obtained. The measurement(s) may be SNR measurements. A metric is derived based on the measurement(s) and used (typically along with a metric threshold and a timer) to determine whether or not the terminal is within the coverage of the current system. A switch to another system is initiated if the terminal is deemed to be outside the coverage of the current system. The two systems provide at least one common service (e.g., packet data service).
REFERENCES:
patent: 5640414 (1997-06-01), Blakeney, II et al.
patent: 5940762 (1999-08-01), Lee et al.
patent: 6021123 (2000-02-01), Mimura
patent: 7016323 (2006-03-01), Yun et al.
patent: 7016331 (2006-03-01), Joo et al.
patent: 7068626 (2006-06-01), Zeira et al.
patent: 7171216 (2007-01-01), Choksi
patent: 2002/0197992 (2002-12-01), Nizri et al.
patent: 1115261 (2001-07-01), None
patent: 9628947 (1996-09-01), None
patent: 98/27777 (1998-06-01), None
patent: 0054540 (2000-09-01), None
International Search Report PCT/US2004/004601, International Search Authority-EPO, Jul. 20, 2004.
Black Peter J.
Ekvetchavit Thunyachate
Rezaiifar Ramin
Ekwueme Kristine U.
Gelin Jean A
QUALCOMM Incorporated
Rouse Thomas R.
LandOfFree
Method and apparatus for determining coverage and switching... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for determining coverage and switching..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for determining coverage and switching... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4020799