Mobile communication system, base station apparatus, and method to reduce inter-cell interference for same

Abstract

To improve throughput of the whole system while reducing power consumption. In a mobile communication system comprising a mobile station apparatus and a base station apparatus, the base station apparatus creates an interference information table based on channel quality of an uplink channel, and at the same time, transmitting the interference information indicator table to the mobile station apparatus, and the mobile station apparatus determines a state of interference in an uplink frequency band based on the interference information indicator table, determines a frequency band of a measurement pilot channel, which is a pilot channel used to determine received quality, and make a request to the base station apparatus for a transmission resource. For example, the mobile station apparatus determines a frequency band with lowest interference among the uplink frequency bands as a frequency band of the measurement pilot channel.

1 . A base station apparatus that communicates with a mobile station apparatus, the base station apparatus comprising:
 a receiving part configured to receive interference information created by another base station apparatus, the interference information representing a state of interference for each predetermined number of frequency bands based on a plurality of magnitude relationships,   wherein a frequency band of an uplink channel is dividing into the predetermined number of frequency bands; and   a scheduling part configured to update the interference information.   
     
     
         2 . A base station apparatus that communicates with a mobile station apparatus, the base station apparatus comprising:
 a creating part configured to create interference information which represents a state of interference for each predetermined number of frequency bands based on a plurality of magnitude relationships, wherein a frequency band of an uplink channel is dividing into the predetermined number of frequency bands; and   a transmitting part configured to transmit the interference information to another base station apparatus.   
     
     
         3 . A communication method of a base station apparatus that communicates with a mobile station apparatus, the method comprising:
 receiving interference information created by another base station apparatus, the interference information representing a state of interference for each predetermined number of frequency bands based on a plurality of magnitude relationships, wherein a frequency band of an uplink channel is dividing into the predetermined number of frequency bands; and   updating the interference information.   
     
     
         4 . A communication method of a base station apparatus that communicates with a mobile station apparatus, the method comprising:
 creating the interference information which represents a state of interference for each predetermined frequency bands based on a plurality of magnitude relationships, wherein a frequency band of an uplink channel is dividing into the predetermined number of frequency bands; and   transmitting the interference information to another base station apparatus.