METHOD AND SYSTEM FOR GENERATING SWITCHING TIMING SIGNAL FOR SEPARATING TRANSMITTING AND RECEVING SIGNAL IN RF REPEATER RF MOBILE TELECOMMUNICATION NETWORK USING TDD AND OFDM MODULATION

摘要

Disclosed are a method and a system for generating a switching timing signal for separating a transmitting and receiving signal in a RF repeater of a mobile telecommunication network by using a TDD scheme and an OFDM modulation scheme. According to one aspect of the present invention, there is. provided the method for generating a switching timing signal to separate a transmission signal in an RF repeater of a mobile communication system including an AP, an AT and an RF repeater by using a TDD scheme and an OFDM modulation scheme, the method comprising the steps of (a) receiving an RF signal from the AP in the RF repeater, extracting a part of the RF signal in a coupler of the RF repeater, and transmitting the part of the RF signal to a switching timing signal generating circuit; (b) correlating the RF signal extracted from the coupler and the reference signal generated in the switching timing signal generating circuit; (c) detecting a frame start position of the RF signal by analyzing a correlation result value; (d) calculating starting points of a downlink signal and an uplink signal included in the RF signal on the basis of the frame start position; (e) generating the switching timing signal by using starting point information of the downlink signal and the uplink signal, and transmitting it to a switch of the RF repeater; and (f) separately transmitting the downlink signal from the uplink signal by controlling the switch by using the switching timing signal. According to the present invention, it is possible to distinguish between a downlink signal and an uplink signal, generate a switching timing signal to provide a path for each signal selectively, and control a switch in the RF repeater of a mobile communication network itself using the TDD scheme and the OFDM scheme.