Patent ID: 8554227

Claim:
A wireless communication system comprising: at least one base station that forms a plurality of cells of different frequencies such that the cells partially or completely overlap with each other; and a terminal that is configured to recognize the cells of different frequencies, wherein the base station determines priority factors of the different frequencies of the plurality of cells, and transmits the priority factors to the terminal that has set a cell of the plurality of cells formed by the base station as a serving cell, the terminal receives the priority factors from the base station forming the serving cell, and selects a cell to be set as the serving cell next from among the plurality of cells of different frequencies based on the priority factors; and wherein the terminal: receives, from the base station forming the cell set as the serving cell, a condition regarding reception power used as a standard for determining whether to select the cell to be set as the serving cell next; measures the reception power of a neighboring cell other than the serving cell; generates an arbitrary value when the measured value of the reception power satisfies the condition regarding reception power; calculates a ratio based on a priority factor of a frequency of a recognizable cell and a priority factor of a frequency of the serving cell; and selects the cell to be set as the serving cell next from among the plurality of cells of the different frequencies based on a result of comparison between the ratio and the arbitrary value.