Pulse or digital communications – Receivers – Interference or noise reduction
Reexamination Certificate
2008-04-08
2008-04-08
Tran, Khanh C. (Department: 2611)
Pulse or digital communications
Receivers
Interference or noise reduction
C455S447000
Reexamination Certificate
active
07356104
ABSTRACT:
A radio communication apparatus and method employs frequency hopping in a predetermined pattern based on a hopping carrier table. An intermittent receiving section activates a carrier frequency designating section every constant cycle to give a command for receiving the control channels of opposing radio base stations. In the case in which a hopping order in a hopping carrier table is skipped by n to carry out switching every intermittent receiving cycle in an intermittent receiving operation, an intermittent receiving cycle is set in such a manner that the n and a total number m of hopping carrier frequencies in the hopping carrier table have a prime relationship with each other. The electric field strength of a carrier frequency in a spare carrier list is measured by the intermittent receiving operation and an interference counter of a spare carrier is increased or decreased corresponding to a frequency at which the electric field strength exceeds or does not exceed a predetermined threshold. A carrier frequency deleted from a hopping pattern and placed in the spare carrier list is set to have the worst value as the initialized value of its interference counter.
REFERENCES:
patent: 5541954 (1996-07-01), Emi
patent: 6115407 (2000-09-01), Gendel et al.
patent: 6144693 (2000-11-01), Tabeta
patent: 6240126 (2001-05-01), Ohashi et al.
patent: 6466608 (2002-10-01), Hong et al.
patent: 6519460 (2003-02-01), Haartsen
patent: 2002/0186749 (2002-12-01), Jones
patent: 2003/0026353 (2003-02-01), Chen et al.
patent: 2004/0240526 (2004-12-01), Schmandt et al.
patent: 59004243 (1984-01-01), None
patent: 04313926 (1992-11-01), None
patent: 04345331 (1992-12-01), None
patent: 728248 (1995-03-01), None
patent: 7107010 (1995-04-01), None
patent: 7147553 (1995-06-01), None
patent: 09093654 (1997-04-01), None
patent: 11196027 (1999-07-01), None
patent: 2000 092700 (2000-03-01), None
patent: 2001 257846 (2001-09-01), None
patent: 2002 158667 (2002-05-01), None
patent: 2003 163652 (2003-06-01), None
International Search Report with Written Opinion dated Dec. 22, 2004.
International Search Report dated Oct. 21, 2004.
Fukuda Shinji
Takehisa Yoshihiro
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