Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2006-02-02
2011-10-11
Chang, Kent (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C370S343000, C455S436000, C455S437000, C455S446000
Reexamination Certificate
active
08036676
ABSTRACT:
In a frequency sharing radio system including a plurality of systems that share a specific frequency, upon establishment of a new system using a frequency that an existing system uses, a receiving station of the existing system receives a signal from a transmitting station of the existing system at a transmission frequency. The receiving station of the existing system transmits a beacon signal indicating a reception range thereof at the transmission frequency. A transmitting station of the new system detects a beacon signal transmitted from a receiving station of another system, and judges whether signal transmission is possible based on a result of the detection.
REFERENCES:
patent: 5276908 (1994-01-01), Koohgoli et al.
patent: 5361258 (1994-11-01), Arnold et al.
patent: 5708969 (1998-01-01), Kotzin et al.
patent: 5893033 (1999-04-01), Keskitalo et al.
patent: 6188900 (2001-02-01), Ruiz et al.
patent: 6389080 (2002-05-01), Barnes
patent: 6526279 (2003-02-01), Dent
patent: 2001/0041594 (2001-11-01), Arazi et al.
patent: 2005/0064832 (2005-03-01), Kogawa et al.
patent: 1 458 116 (2004-09-01), None
patent: 3-235534 (1991-10-01), None
patent: 7-298361 (1995-11-01), None
patent: 9-172405 (1997-06-01), None
patent: 2001-519978 (2001-10-01), None
patent: 2002 186019 (2002-06-01), None
patent: 2002 198867 (2002-07-01), None
patent: 2002 353878 (2002-12-01), None
patent: 2003-18074 (2003-01-01), None
patent: 2003 169367 (2003-06-01), None
patent: 2004 274765 (2004-09-01), None
patent: 2004-533158 (2004-10-01), None
patent: 2004 343509 (2004-12-01), None
patent: 2005-12683 (2005-01-01), None
patent: WO 98/36599 (1998-08-01), None
patent: WO 02/082751 (2002-10-01), None
patent: WO 02/082751 (2002-10-01), None
patent: WO 2004/015886 (2004-02-01), None
A. S. Tannenbaum, “Computer Networks”, XP002537203, Jan. 1, 1996, pp. 262-265.
Hans-Jürgen Perz, et al., “Adjustable Transmission Power for Mobile Communications with Omnidirectional and Directional Antennas in an One-And Multi-Hop Environment”, Vehicular Technology Conference, XP010037156, May 19, 1991, pp. 630-635.
Chang Kent
Mitsubishi Electric Corporation
Nguyen Dinh
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
LandOfFree
Frequency sharing method, receiving station and transmitting... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Frequency sharing method, receiving station and transmitting..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frequency sharing method, receiving station and transmitting... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4257094