Transmission method, system and device for synchronizing signals

The invention discloses a transmission method, a transmission system and a transmission device for synchronizing signals, the method including the steps that: a base station device determines that a local cell and an adjacent cell have synchronizing signal conflict; when determining that the local cell and the adjacent cell have synchronizing signal conflict, the base station device determines a power transmission pattern corresponding to the local cell and a power transmission pattern corresponding to the adjacent cell; the base station device transmits the power transmission pattern corresponding to the local cell and the power transmission pattern corresponding to the adjacent cell to the adjacent base station device corresponding to the adjacent cell; and the base station device transmits PSS (Primary Synchronization Signals) and/or SSS (Secondary Synchronization Signals) in the local cell by using the power transmission pattern corresponding to the local cell, and the adjacent base station device transmits PSS and/or SSS in the adjacent cell by using the power transmission pattern corresponding to the adjacent cell. According to the transmission method, system and device for the synchronizing signals, the problem about the switching/accessing success rate and the time delay that may result when the MOD3 results are the same can be overcome, and the interference problem existing in an LTE (Long Term Evolution) system can be effectively overcome.