The invention discloses an interference coordination method, an interference coordination system, base stations, user terminals and a spectrum allocation device. The interference coordination method for super-dense networking in the invention comprises the steps that: the user terminals broadcast uplink signals coded by a fountain code, so that the multiple base stations receive the uplink signals; and the multiple base stations collect and decode the received uplink signals in a joint manner. According to the interference coordination method, the interference coordination system, the base stations, the user terminals and the spectrum allocation device disclosed by the invention, the base stations and the user terminals perform data transmission by adoption of the fountain code; therefore,data transmission does not need to be confirmed by sending a corresponding ACK message on each received data packet by a receiving end; simultaneously, the necessity of data retransmission is also eliminated; and thus, the system overhead is greatly reduced.