Mobile communication system and base station

Abstract

A mobile communication system capable of easily notifying the interference-related information and avoiding interference in a situation in which a macro cell and local nodes are deployed to coexist. In the system, a macro cell (eNB) notifies, via user equipments (UEs) present in a coverage, HeNBs present in the coverage of the interference-related information related to the interference to a physical resource to be used, for example, a high interference indication (HII) and an overload indicator (OI).

1 . (canceled) 
     
     
         2 . A mobile communication system comprising:
 a user equipment; and   a plurality of base stations configured to perform radio communication with the user equipment, wherein   a first base station of the plurality of base stations notifies the user equipment of an uplink transmission parameter,   the first base station notifies a second base station of the plurality of base stations of the uplink transmission parameter,   the user equipment transmits an uplink signal using the uplink transmission parameter, and   the first base station and the second base station receive the uplink signal transmitted from the user equipment.   
     
     
         3 . A base station of a plurality of base stations configured to perform radio communication with a user equipment, wherein
 the base station receives an uplink transmission parameter notified from another base station of the plurality of base stations, and   the base station receives an uplink signal transmitted by the user equipment using the uplink transmission parameter, the user equipment having been notified of the uplink transmission parameter from the other base station.