The invention provides a relaying assisted honeycomb mobile communication system and a method thereof. All relay stations or base stations in a subdistrict and the relay stations measure all the uplink signals of an uplink reference signal, an uplink random access signal and the like of users so as to obtain the reception quality of the uplink signals of each user at each site and feed back a measurement result to the base stations, and the base stations determine the routing site of each user according to the measurement result. The downlink reception, the uplink transmission, the uplink retransmission, the downlink retransmission reception and the like of the users adopt the centralized dispatching of the base stations and are processed by the routing sites, and dispatching control information is retransmitted to the users. In an uplink HARQ mechanism, the routing sites receive the uplink signals of the users, feed back an ACK to the users and retransmit the processed uplink signals of the users to the base stations or feed back an NACK or the ACK to the base stations, and the base stations determine whether the uplink transmission of this time is successful or not and determine the uplink retransmission dispatching according to a demodulation and decryption result of the retransmitted data or a feedback result of the routing sites.