In a mobile communication system according to this invention, an integrated control apparatus (ISa1) is arranged between a plurality of base stations (CSa1, CSa1, . . . ) arranged in an area with a low traffic density, and a public digital network (INW), the integrated control apparatus (ISa1) accommodates...http://www.google.de/patents/US6047176?utm_source=gb-gplus-sharePatent US6047176 - Mobile communication system and base station apparatus therefor
