Moving-load balancing method based on efficacy function in LTE (long term evolution) self-organized network

The invention provides a moving-load balancing method based on an efficacy function in an LTE (long term evolution) self-organized network. The method comprises the following step of calculating efficacy functions in all adjacent cells of an unsatisfied user in an overload cell. If all the efficacy function values of the unsatisfied user equal to 0, the user does not switch a target cell, and the user is in a status of congestion or wire off; and otherwise, an adjacent cell with a maximum efficacy function value is selected to carry out switching. According to the method, an admittance control condition in a target cell is selected to be converted into a part of the efficacy function based on A3 inequality triggered switching, and a switching selection process of the unsatisfied user is simplified by combining the adjacent cell spectrum efficiency and a subnet loading balanced index. By the adoption of the efficacy function, the adjacent cell information channel and the loading situation of a peripheral user are clearly expressed, so that an approximate direction of a cell where the user is located is indirectly shown, the unsatisfied user is enabled to directly select the current most excellent target cell to carry out switching in a complex scene, and a successful rate and the efficiency of switching are greatly improved.