A method for shaping transmission beams (140a, 140a', 140a", 140b, 140b') in a wireless communications network (100a, 100b, 100c, 100d), the method being performed by a network node, the method comprising: acquiring channel measurements from wireless devices served by radio access network nodes (110a, 110b) using current beam forming parameters and being controlled by the network node; determining, based on the channel measurements, desired beam forming parameters for shaping the transmission beams for at least one of the radio access network nodes; and initiating a gradual change of the current beam forming parameters to the desired beam forming parameters for shaping said transmission beams for said at least one of the radio access network nodes, wherein the gradual change causes a need for network controlled handover to occur for at least some of the wireless devices served by the radio access network nodes, wherein the current beam forming parameters are associated with beam pointing in a first direction, and wherein the desired beam forming parameters are associated with beam pointing in a second direction different from the first direction, wherein the first direction is covered by a first transmission beam as generated by the current beam forming parameters, wherein the second direction is covered by a second transmission beam as generated by the desired beam forming parameters, and wherein initiating the gradual change comprises: instructing (S106e) said at least one of the radio access network nodes to gradually increase size of the first transmission beam until the first transmission beam covers both the first transmission beam and the second transmission beam and then to gradually decrease the size until the first transmission beam covers only the second transmission beam, thereby gradually changing the first transmission beam into the second transmission beam. acquiring channel measurements from wireless devices served by radio access network nodes (110a, 110b) using current beam forming parameters and being controlled by the network node; determining, based on the channel measurements, desired beam forming parameters for shaping the transmission beams for at least one of the radio access network nodes; and initiating a gradual change of the current beam forming parameters to the desired beam forming parameters for shaping said transmission beams for said at least one of the radio access network nodes, wherein the gradual change causes a need for network controlled handover to occur for at least some of the wireless devices served by the radio access network nodes, wherein the current beam forming parameters are associated with beam pointing in a first direction, and wherein the desired beam forming parameters are associated with beam pointing in a second direction different from the first direction, wherein the first direction is covered by a first transmission beam as generated by the current beam forming parameters, wherein the second direction is covered by a second transmission beam as generated by the desired beam forming parameters, and wherein initiating the gradual change comprises: instructing (S106e) said at least one of the radio access network nodes to gradually increase size of the first transmission beam until the first transmission beam covers both the first transmission beam and the second transmission beam and then to gradually decrease the size until the first transmission beam covers only the second transmission beam, thereby gradually changing the first transmission beam into the second transmission beam.