Patent ID: 8848637

Claim:
A mobile communication system, comprising: a plurality of terminals; a plurality of femtocell base stations that use scrambling codes to carry out radio communication with said terminals; and a higher-order apparatus that has under its control said plurality of femtocell base stations, wherein said higher-order apparatus: records in advance in a first database, for each hardware version that shows a type of hardware of said femtocell base stations, the maximum number of uplink scrambling codes that are requested by a femtocell base station of that type, each time when the range of uplink scrambling codes that can be used in one subordinate femtocell base station of a plurality of subordinate femtocell base stations is assigned, records in a second database information of the range of uplink scrambling codes that was assigned, assigns, as the range of uplink scrambling codes that can be used in one of the subordinate femtocell base stations, a range that includes a maximum number, which is recorded in said first database, of uplink scrambling codes from among uplink scrambling codes that have not been recorded in said second database, assigns to the subordinate femtocell base stations uplink scrambling codes that have not yet been assigned to other femtocell base stations as the uplink scrambling codes that can be used in the subordinate femtocell base stations, and transmits to the subordinate femtocell base stations information of said uplink scrambling codes that have been assigned.