BASE STATION FOR DOING SERVICE TO MACRO CELL AND METHOD FOR DOING SERVICE TO MICRO CELL IN MACRO CELL

摘要

PROBLEM TO BE SOLVED: To provide a system including a new micro cell for solving the problem of a communication system including a conventional micro cell. SOLUTION: In one performing example of the system, the base station of the micro cell has a two-dimensional(2D) antenna array coexisting with the antenna of the macro cell. This two-dimensional antenna array is constituted so that its direction can be converted in both of a horizontal direction and a vertical direction. The extent of the coverage area of the micro cell depends on a distance from the antenna of a cell site and the dimension of the array for deciding the angle diffusion of beams.