Heterogeneous cellular network and micro base stations therein, and resource selection method of micro base stations

The invention provides a heterogeneous cellular network which is based on a fractional frequency reuse mechanism and micro base stations therein, and a resource selection method of the micro base stations so that inter-cell same-frequency interferences can be reduced and thus network capacity is improved. The micro base stations in the heterogeneous cellular network are provided with resources which can be used by users. The resources include frequency bands and time slots. The heterogeneous cellular network is provided with a plurality of base stations which include macro base stations and the micro base stations. Each micro base station is characterized by including an information obtaining unit which obtains configuration information and load information of the micro base station and obtains configuration information and load information of adjacent base stations from the base stations which are adjacent to the micro base station, and a resource selection unit which selects part of resources from the resources according to the configuration information and load information of the micro base station and the adjacent base stations, obtained through the information obtaining unit, so as to be used by the users.