A method in a first network node (110) for coordinating data transmissions between wireless devices (121, 122) and two or more antennas associated with at least one second network node (210, 310) in a wireless communication network (100) is provided. The wireless devices (121, 122) are served by the at least one second network node (210, 310) and the at least one second network node (210, 310) is configured to perform coordinated data transmission or reception. First, the first network node (110) identifies two or more groups of wireless devices based on mutual spatial correlation between the wireless devices (121, 122). Then, the first network node (110) selects a subset of wireless devices from two or more of the identified groups of wireless devices based on a criterion that relates to a data rate of each of the wireless devices. The first network node (110) then schedules wireless devices from the selected subset of wireless devices for the coordinated data transmission or reception of the at least second and third network node (210, 310). The first network node (110) then coordinates the data transmission or reception between the two or more antennas comprised in the at least one second network node (210, 310) and the scheduled wireless devices.A first network node and a computer program are also provided.