A technique for controlling a cluster of radio access nodes for radio communication with a user equipment is described. As to a method (200) aspect of the technique, information is received (202) from at least one of the user equipment and the radio access nodes, wherein the information is the cluster indicative of a radio quality (904-908) of the radio communication. Based on the received information, a number of radio access nodes that redundantly communicate with the user equipment is changed (204).