Abstract: The present disclosure relates to an interference cancellation method and device of an ICS repeater using a leveler, and may effectively cancel only interference signals by using a leveler without using a magnetic correlation cancellation device or digital filter in order to cancel unnecessary noise signals generated by narrow-band signals and enable an ICS repeater design for an LTE wireless network that needs a short system time delay.

Abstract: A forward and reverse link automatic power controlled repeater in an apparatus for measuring a path loss between a base-station and a repeater, includes a repeater control part device for controlling a repeater run and for processing forward and reverse gain of the repeater using received information. A mobile communication modem device transfers base-station signal information and base-station power transmission, and provides a wireless connection pathway of the repeater control part. A repeater element management system (EMS) device transfers information extracted from the base-station to the repeater control part and exchanges information with the repeater control part to control a repeater through the modem.

Abstract: The present invention relates to a Radio Frequency Repeater to prevent oscillation with canceling a feedback interference signal between transmitting and receiving antenna with built-in transmitting and receiving antenna in wireless mobile communication repeater. A radio frequency repeater for canceling a feedback interference signal has a downlink path from a base station to a terminal and an uplink path from a terminal to a base station, and said downlink path and said uplink path is separated and combination by a duplexer.

Abstract: Embodies of peripheral a wireless relay system apparatus and method for a multi-path interference removing using by same channel frequency is shown and described, which purpose of the present invention is to overcome extension of service coverage and a dead spot with amplifying same channel frequency, a problem in doing the relay, system wireless relay system was a same frequency interference of RF (Radio Frequency) output is become feedback radiating from tx antenna to rx antenna of the relay system, the wireless relay system apparatus and method effectively eliminates the same frequency interference so that it can ensure an additional system gain and easy to set up relatively to general same frequency relay system.

Abstract: The present invention relates to a Radio Frequency Repeater to prevent oscillation with canceling a feedback interference signal between transmitting and receiving antenna with built-in transmitting and receiving antenna in wireless mobile communication repeater. A radio frequency repeater for canceling a feedback interference signal has a downlink path from a base station to a terminal and an uplink path from a terminal to a base station, and said downlink path and said uplink path is separated and combination by a duplexer.

Abstract: In an apparatus to measure a path loss between base-station and repeater, forward and reverse link automatic power controlled repeater of the present invention is comprising that a repeater control part means for controlling the repeater run and to process forward and reverse gain of the repeater using received information; a mobile communication modem means for transferring base-station signal information and base-station power transmission, and providing a wireless connection pathway of the repeater control part; a repeater element management system (EMS) means for transferring an information of base-station with extract to the repeater control part and to exchange of information with the repeater control part to control a repeater through the modem.