A method in a network node for controlling a number of user equipments (101a, 101b, 101c, 101d) operating in a cellular network, the method comprising: receiving (51, 61, 71) a first indication that a rise-over-thermal, RoT, measured in a first cell is above a first threshold; in response to reception of said first indication, determining (52, 10, 62, 73) if at least one user equipment (101a, 101b), which is in a Radio Resource Control, RRC, state CELL_DCH and served by the first cell, has a low data activity in the uplink, wherein a user equipment (101a, 101b, 101c, 101d) is determined to have a low data activity in the uplink (104a, 104c) if measured traffic of the user equipment fulfills a set of selected requirements for low data activity in the uplink; selecting (53, 63, 74) at least one user equipment (101a, 101b), which is in the RRC state CELL_DCH, is served by the first cell and is determined to have a low data activity in the uplink; and triggering (54, 64, 75) change of RRC state for the at least one 20 selected user equipment (101a, 101b) from the RRC state CELL_DCH to a RRC state CELL_FACH; characterized in that the method further comprises: obtaining a second indication of the RoT of the first cell, re-estimated after the change of RRC state has been executed for the at least one selected user equipment (101a, 101b); if the second indication indicates that the RoT of the first cell is still above the first threshold, determining if at least one user equipment (101c, 101d), which is in the RRC state CELL_DCH and served by a second cell adjacent to the first cell, has a low data activity in the uplink; and triggering change of RRC state for at least one user equipment (101c, 101d), which is in the RRC state CELL_DCH, is served by the second cell and is determined to have a low data activity in the uplink to the RRC state CELL_FACH. receiving (51, 61, 71) a first indication that a rise-over-thermal, RoT, measured in a first cell is above a first threshold; in response to reception of said first indication, determining (52, 10, 62, 73) if at least one user equipment (101a, 101b), which is in a Radio Resource Control, RRC, state CELL_DCH and served by the first cell, has a low data activity in the uplink, wherein a user equipment (101a, 101b, 101c, 101d) is determined to have a low data activity in the uplink (104a, 104c) if measured traffic of the user equipment fulfills a set of selected requirements for low data activity in the uplink; selecting (53, 63, 74) at least one user equipment (101a, 101b), which is in the RRC state CELL_DCH, is served by the first cell and is determined to have a low data activity in the uplink; and triggering (54, 64, 75) change of RRC state for the at least one 20 selected user equipment (101a, 101b) from the RRC state CELL_DCH to a RRC state CELL_FACH; characterized in that the method further comprises: obtaining a second indication of the RoT of the first cell, re-estimated after the change of RRC state has been executed for the at least one selected user equipment (101a, 101b); if the second indication indicates that the RoT of the first cell is still above the first threshold, determining if at least one user equipment (101c, 101d), which is in the RRC state CELL_DCH and served by a second cell adjacent to the first cell, has a low data activity in the uplink; and triggering change of RRC state for at least one user equipment (101c, 101d), which is in the RRC state CELL_DCH, is served by the second cell and is determined to have a low data activity in the uplink to the RRC state CELL_FACH. obtaining a second indication of the RoT of the first cell, re-estimated after the change of RRC state has been executed for the at least one selected user equipment (101a, 101b); if the second indication indicates that the RoT of the first cell is still above the first threshold, determining if at least one user equipment (101c, 101d), which is in the RRC state CELL_DCH and served by a second cell adjacent to the first cell, has a low data activity in the uplink; and triggering change of RRC state for at least one user equipment (101c, 101d), which is in the RRC state CELL_DCH, is served by the second cell and is determined to have a low data activity in the uplink to the RRC state CELL_FACH.