| 摘要 |
PROBLEM TO BE SOLVED: To provide a mobile communication system and a base station device which can reduce effects of interferences of cell-specific reference signals with data symbol signals when plural base stations perform cooperative transmission to a mobile station therebetween under LTE-standard resource element arrangement.SOLUTION: Resource elements of cell-specific reference signals (CS-RS) transmitted respectively from plural base stations are arranged at dispersed points on time base and frequency axis according to cell IDs, where a data symbol signal is transmitted using resource elements arranged at the same positions on time base and frequency axis as are the resource elements of the cell-specific reference signals, whereby downlink cooperative transmission from plural base stations to a mobile station is performed. The transmission power of the cell-specific reference signals is reduced when this downlink cooperative transmission is performed than when the downlink cooperative transmission is not performed. |
