A method undertaken at a radio resource management node of a wireless communications network of performing cell selection among at least two neighbouring cells (14, 15) for a set of mobile terminals in a communications network, where a first cell of the at least two neighbouring cells comprises a first radio access node having a first transmit power and a second cell of the at least two neighbouring cells comprises a second radio access node having a second transmit power, the method comprising: acquiring a value of at least one property (n) reflecting a network condition for each one of the mobile terminals in the set; and determining with which one of the at least first and second radio access nodes each of the mobile terminals initially should be associated (f 0) based on the value of the acquired property for each mobile terminal; the method further characterized in comprising: generating a plurality of variations (f 1, f2,..., f n) to the determined initial association (f 0), wherein each generated variation is based on a corresponding selected parameter (x 1, x 2,..., x n); performing cell selection for at least a subset of the generated plurality of variations (f 1, f 2,..., f n) to the determined initial association (f 0); and determining a value of a metric (m = f 0 + w 1 f 1 (x 1)+...) for each of the performed cell selections and associating each metric value with said acquired property and the selected parameters for each corresponding variation of each performed cell selection ([n, x 1, x 2,...|m]), which metric reflects a performance for the set of mobile terminals for each performed cell selection; wherein cell selection subsequently is performed based on the metric value and the associated acquired property and selected parameters. acquiring a value of at least one property (n) reflecting a network condition for each one of the mobile terminals in the set; and determining with which one of the at least first and second radio access nodes each of the mobile terminals initially should be associated (f 0) based on the value of the acquired property for each mobile terminal; the method further characterized in comprising: generating a plurality of variations (f 1, f2,..., f n) to the determined initial association (f 0), wherein each generated variation is based on a corresponding selected parameter (x 1, x 2,..., x n); performing cell selection for at least a subset of the generated plurality of variations (f 1, f 2,..., f n) to the determined initial association (f 0); and determining a value of a metric (m = f 0 + w 1 f 1 (x 1)+...) for each of the performed cell selections and associating each metric value with said acquired property and the selected parameters for each corresponding variation of each performed cell selection ([n, x 1, x 2,...|m]), which metric reflects a performance for the set of mobile terminals for each performed cell selection; wherein cell selection subsequently is performed based on the metric value and the associated acquired property and selected parameters. generating a plurality of variations (f 1, f2,..., f n) to the determined initial association (f 0), wherein each generated variation is based on a corresponding selected parameter (x 1, x 2,..., x n); performing cell selection for at least a subset of the generated plurality of variations (f 1, f 2,..., f n) to the determined initial association (f 0); and determining a value of a metric (m = f 0 + w 1 f 1 (x 1)+...) for each of the performed cell selections and associating each metric value with said acquired property and the selected parameters for each corresponding variation of each performed cell selection ([n, x 1, x 2,...|m]), which metric reflects a performance for the set of mobile terminals for each performed cell selection; wherein cell selection subsequently is performed based on the metric value and the associated acquired property and selected parameters.