A method including performing a delay measurement of a first round trip delay value of an interface link, the first round trip delay value based on a transmission of a first REC synchronization signal to a RE and when a REC receives a first RE synchronization signal back, wherein frames transmitted by the REC are synchronized based upon the first REC synchronization signal, and frames transmitted by the RE are synchronized based upon the first RE synchronization signal. Calculating a first delay change value between the first round trip delay value and a previous round trip delay value, in response to determining that the first delay change value violates a delay tolerance value, transmitting an offset indicator that indicates an amount of offset the RE is to shift the first RE synchronization signal at a future time, and transmitting frames from the REC after shifting the first REC synchronization signal.