Communication system, base station and communication control method

A base station of any one of a plurality of base stations in a communication system capable of cooperatively transmitting a data from the plurality of base stations by radio communication,

• wherein the base station comprises:
• means of acquiring a value of an interference suppression parameter that is applied to a transmission signal from the base station so as to suppress an interference from an other base station in a first communication terminal, when the first communication terminal having the base station as a desired station is located in a cell border area between an own cell of the base station and a cell of another base station that performs a cooperative transmission of the data;
• means of generating a transmission signal by applying the value of the interference suppression parameter to a desired data for the first communication terminal and a desired data for a second communication terminal located in the cell of the other base station which is received from the other base station;
• and
• means of cooperatively transmitting the generated transmission signal according to a predetermined data cooperative transmission timing.

A base station of any one of a plurality of base stations in a communication system capable of cooperatively transmitting data from the plurality of base stations by radio communication,

• wherein the base station comprises:
• means of duplicating a first desired data for a second communication terminal having the base station as a desired station located in an own cell and transmitting the duplicated desired data to an other base station performing a cooperative transmission of the data via inter-base station communication interface;
• means of generating a first transmission signal of the first desired data for the second communication terminal;
• and
• means of cooperatively transmitting the generated first transmission signal according to a predetermined data cooperative transmission timing.

A communication control method when cooperatively transmitting a data from a first base station and a second base station by radio communication, the method comprising:

• acquiring a value of a first interference suppression parameter that is applied to a first transmission signal from the first base station so as to suppress an interference from the second base station in a first communication terminal, by the first base station, when the first communication terminal having the first base station as a desired station is located in a cell border area between a cell of the first base station and a cell of the second base station;
• duplicating a first desired data for a second communication terminal having the second base station as a desired station located in the cell of the second base station, and transmitting the duplicated first desired data to the first base station via inter-base station communication interface, by the second base station;
• generating the first transmission signal by applying the value of the first interference suppression parameter to a desired data for the first communication terminal and the first desired data for the second communication terminal received from the second base station, by the first base station;
• generating a second transmission signal of the desired data for the second communication terminal, by the second base station;
• and
• cooperatively transmitting the first generated transmission signal and the second generated transmission signal according to a predetermined data cooperative transmission timing by the first base station and the second base station, respectively.