Fdd inband backhauling and method thereof

The present invention relates to FDD inband backhauling method for establishing a wireless transmission to the master base station from the at least one access base station in a digital cellular communication system, the access base station is coupled to at least one mobile station, the access base station has base stations is coupled to a relay base station is coupled to a master base station, the master base station is coupled to a core network 105. Method comprising: receiving, by a first signal (s1) from the mobile station using a first frequency band (f1) to the access base station; Converting the first frequency band (f1) of the first signal (s1) in a second frequency band (f2) by the access base station; And a and a step of transmitting to the relay base station a first signal (s1) by using a second frequency band (f2) from the access base station. Method comprising the steps of: converting the second frequency band (f2) of the first signal (s1) in a first frequency band (f1) by the relay base station; And using a first frequency band (f1) includes the further step of transmitting to the master station a first signal (s1) from the relay base station.