Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2006-04-18
2006-04-18
Nguyen, Lee (Department: 2682)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S440000, C455S456100
Reexamination Certificate
active
07031711
ABSTRACT:
A system for facilitating handoff adapted for use with a telecommunications network. The system includes position equipment for determining the location of a mobile transceiver within a region containing a first cell and a second cell. A comparison circuit compares the location with a predetermined handoff area within the region and provides a control signal in response thereto. A handoff initiation circuit initiates handoff of the mobile transceiver between the first cell and the second cell in response to the control signal. In a specific embodiment, the handoff is a hard handoff. The position equipment includes Global Positioning System (GPS) equipment including a mobile unit GPS receiver and signal interface. The comparison circuit includes a positional database that stores latitudinal and longitudinal information corresponding to the predetermined handoff area. The comparison circuit also includes a Code Division Multiple Access selector. The selector begins tracking the position of the mobile transceiver when it is within a predetermined range of the predetermined handoff area. In a specific embodiment, the handoff initiation circuit includes a base station controller. The position equipment includes a base station positional detection system and a mobile unit positional detection system for determining the location of the mobile transceiver. The position database has map information depicting the coverage area of the first and second cells and the predetermined handoff area. The selector runs software for comparing the location to the map information and providing the control signal when the location is within the predetermined handoff area. The base station includes and implements instructions for completing hard handoff in response to the control signal.
REFERENCES:
patent: 5502758 (1996-03-01), Tsuzuki et al.
patent: 5546445 (1996-08-01), Dennison et al.
patent: 5669061 (1997-09-01), Schipper
patent: 5680395 (1997-10-01), Weaver et al.
patent: 5987316 (1999-11-01), Gordon et al.
patent: 6061337 (2000-05-01), Light et al.
patent: 6064336 (2000-05-01), Krasner
patent: 6321090 (2001-11-01), Soliman
patent: 9916276 (1999-04-01), None
Greenhaus Bruce W.
Mays Andrea L.
Nguyen Lee
Qualcomm Incorporated
Wadsworth Philip
LandOfFree
Mobile communication system with position detection to... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Mobile communication system with position detection to..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mobile communication system with position detection to... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3531623