Patent ID: 9161277
Filing Date: 2015-10-13
Classification: H04W

Abstract:
1. A base station comprising a CPU, for reducing radio wave interference in wireless communication systems which includes a plurality of base stations with different cell area sizes, wherein the base station is configured to: acquire a cell area size information for its own base station and coverage information, the coverage information including cell area size information for neighbor base stations; decide based on the cell area size information for its own base station and the cell area size information for neighbor base stations, whether the cell area size of its own base station is larger than a cell area size of a candidate neighbor base station; and if the cell are size of its own base station is larger than the cell area size of the candidate neighbor base station, apply a handover judgment scheme which is more apt to handover a terminal within its own base station cell to a base station cell of the candidate neighbor base station, in comparison to another handover judgment scheme used to determine whether to handover the terminal to another neighbor base station cell if the cell area size of its own base station is not larger than the cell area size of the another neighbor base station; wherein the base station includes: an interface configured to obtain the cell area size information of its own base station and cell area size information of the candidate neighbor base station; a handover parameter control block configured to set the handover judgment scheme used to decide whether or not to handover the terminal within the cell of its own base station to the cell of the candidate neighbor base station, where the handover judgment scheme is set according to cell area size information of its own base station and cell area size information of the candidate neighbor base station; a handover judgment unit configured to decide whether or not to handover the terminal to the cell of the candidate neighbor base station by using the handover judgment scheme and by using evaluation values that are based on signal quality in an optional terminal within its own cell; and wherein, when the cell area size of its own base station is smaller than the cell area size of the candidate neighbor base station, the handover parameter control block is configured to makes a handover decision less apt to handover, by making the handover judgment scheme more difficult.