Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2006-06-13
2011-11-15
Fan, Chieh M (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
C375S295000, C375S316000, C375S344000, C455S063300, C455S450000, C455S062000, C455S161100, C455S173100, C455S175100, C455S179100, C455S180100, C455S182300, C455S509000, C370S329000, C370S278000, C370S335000, C370S342000, C370S215000
Reexamination Certificate
active
08059731
ABSTRACT:
A base station performs communication of an orthogonal frequency division multiplexing (OFDM) scheme with a mobile station by using any one of equal to or greater than two frequency bands. The base station includes means that transmits a synchronization channel and a control channel using a band that includes a center frequency fAon a raster of a first band (20 MHz) and that has a bandwidth equal to or greater than that of a second band (5 MHz of the end). The control channel includes center frequency information for specifying a center frequency fA′ of the second band. Since the mobile station moves to a desired band after obtaining center frequency information using a band including the center frequency on a raster, the mobile station can connect to the desired band without searching frequencies that are not on the raster.
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Higuchi Kenichi
Sawahashi Mamoru
Fan Chieh M
Lee Siu
NTT DoCoMo Inc.
Osha • Liang LLP
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