RADIO OVER FIBER SYSTEM AND SIGNAL CONTROL METHOD FOR EXECUTING WIRELESS-COMMUNICATION-SERVICE HYBRID DEPLEXING TECHNOLOGY BASED

摘要

A RoF(Radio over Fiber) system for executing an HD(Hybrid Duplexing) wireless communication service and a signal control method for the same are provided to simplify the structures of BSs(Base Stations) and RSs(Relay Stations) by enabling a BS to process an FDD(Frequency Division Duplexing)/TDD(Time Division Duplexing)-combined wireless communication service, an FDD wireless communication service, and a TDD wireless communication service simultaneously and efficiently through a single antenna. A RoF system for executing an HD wireless communication service comprises a BS(50), a BS donor(53), and an RS. The BS transmits and receives individual TDD and FDD signals and HD signals, or TDD/FDD-combined signals. Also the BS generates TDD downlink signals, FDD downlink signals, and channel coupling/mode control signals. If a downlink RF signal is inputted from the BS, the BS donor converts it into a downlink optical signal and outputs the converted signal. Also the BS donor delivers an uplink optical signal, inputted to the RS from an MS(Mobile Station), to the BS. The RS executes switching to an associated duplexing mode according to the state of the wireless service channel of the MS. The RS converts a downlink optical signal, transmitted from the BS donor, into a service RF signal, amplifies the converted signal, and supplies the amplified signal to the MS through an antenna.