A method is proposed for adjusting transmission properties associated with data transfer in time slots of predetermined length, the method comprises transmitting a first transport block S101 using a set of transport transmission properties to a receiving node. A probing block S102 is transmitted to the receiving node using a set of probing transmission properties comprising a reduced robustness in relation to the set of transport transmission properties. The set of transport transmission properties is reconfigured for further transport blocks based on information communicated by the receiving node indicative of success of decoding of the probing block by the receiving node.