Method and device for timed maintenance under coverage enhancement mechanism

The invention discloses a method and a device for timed maintenance under a coverage enhancement mechanism. The method comprises the following steps: determining a time domain position last retransmitted by a physical layer channel relevant to timing; determining a zero hour of the timing according to the determined time domain position. For the embodiment of the invention, according to the time domain position last retransmitted by the physical layer channel relevant to the timing, the zero hour of the timing is determined; the situation that the timed maintenance is performed in a manner regulated in the existing standard is avoided, so that the problem of how to perform the timed maintenance relevant to the physical layer channel under the coverage enhancement mechanism is solved.