Optical communications – Hybrid communication system
Reexamination Certificate
2008-04-18
2011-11-15
Phan, Hanh (Department: 2613)
Optical communications
Hybrid communication system
C398S041000, C398S135000, C398S079000, C455S522000, C455S562100, C370S280000, C370S328000
Reexamination Certificate
active
08059963
ABSTRACT:
A wired relay method for using a remote station and an apparatus thereof for a Radio over Fiber (RoF) wired relay system supporting a Time Division Duplexing (TDD) wireless communication service, which shares an Low-Noise Amplifier (LNA) for both uplink and downlink operations. The remote station includes a block for dividing each of a downlink optical signal carrying service data and an optical signal carrying transmission/reception control information of the RoF wired relay system, which are input from a base station, a gain controller for separating an uplink Radio Frequency (RF) signal input from an antenna or a portion of a downlink RF signal output from a High-Power Amplifier (HPA) and for monitoring the strength of the input and output RF signals in order to control a gain of the LNA. A converter mutually converts an optical signal and an RF signal, an amplifier amplifies the converted RF signal, and an RF signal flow controller automatically controls uplink and downlink transmission paths of the amplified RF signal according to a transmission/reception status of the RoF wired relay system.
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Hwang Seong-Taek
Kim Sang-Ho
Lee Han-Lim
Oh Yun-Je
Song Ki-Uk
Cha & Reiter LLC
Phan Hanh
Samsung Electronics Co,. Ltd.
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