The present invention relates to a method and a system for load sharing between a plurality of cells in a radio network system, wherein each of said cells is serving a number of mobile devices. For handover of a mobile device from a currently serving source cell to a target cell, a priorization among cells adjacent to the source cell is carried out by calculating the power budgets between the currently serving source cell on the one hand and said adjacent cells on the other hand, and the adjacent cell having the highest priority is selected as target cell.