A handover controller for an entity in a wireless cellular network, comprising: an input for receiving a first quality value for a wireless link between a mobile terminal and a serving base station and for receiving one or more second quality values, each second quality value being for a wireless link between the mobile terminal and a respective non-serving base station; and control logic, configured to establish a plurality of handover control criteria, to assess the first quality value against a first handover control criterion, to assess each second quality value against the first handover control criterion if the first quality value does not meet the first handover control criterion and to assess the first quality value against a second handover control criterion if all of the one or more second quality values do not meet the first handover control criterion; and wherein each of the plurality of handover control criteria define a respective minimum quality level and a respective non-zero hysteresis parameter, the first handover control criterion is more stringent than the second handover control criterion and wherein the control logic is configured to assess the first quality value against a handover control criterion from the plurality of handover control criteria by determining if the first quality value meets the minimum quality level of the handover control criterion and to assess each second quality value against a handover control criterion from the plurality of handover control criteria, by determining if the respective second quality value meets the minimum quality level of the handover control criterion and by identifying if the respective second quality value exceeds the first quality value by a level defined by the hysteresis parameter of the handover control criterion. an input for receiving a first quality value for a wireless link between a mobile terminal and a serving base station and for receiving one or more second quality values, each second quality value being for a wireless link between the mobile terminal and a respective non-serving base station; and control logic, configured to establish a plurality of handover control criteria, to assess the first quality value against a first handover control criterion, to assess each second quality value against the first handover control criterion if the first quality value does not meet the first handover control criterion and to assess the first quality value against a second handover control criterion if all of the one or more second quality values do not meet the first handover control criterion; and wherein each of the plurality of handover control criteria define a respective minimum quality level and a respective non-zero hysteresis parameter, the first handover control criterion is more stringent than the second handover control criterion and wherein the control logic is configured to assess the first quality value against a handover control criterion from the plurality of handover control criteria by determining if the first quality value meets the minimum quality level of the handover control criterion and to assess each second quality value against a handover control criterion from the plurality of handover control criteria, by determining if the respective second quality value meets the minimum quality level of the handover control criterion and by identifying if the respective second quality value exceeds the first quality value by a level defined by the hysteresis parameter of the handover control criterion.