Mobile communication system, base station, and method of controlling packet transmission timing for the system

摘要

A mobile communication system is provided in which high-speed transmission to a mobile station located in the vicinity of a cell boundary can be performed without causing any deterioration in mobile-station line quality. A HS-PDSCH data transmission timing detection portion of a base station executes a program stored on a recording medium to check a HS-PDSCH data transmission timing notice from the mobile station, to receive the transmission timing notice, and to send this notice to a control portion. The control portion controls power for transmission of HS-PDSCH data from a modulation-and-encoding portion in response to the transmission timing notice from the HS-PDSCH data transmission timing detection portion. Also, when the base station transmits HS-PDSCH data to the mobile station, the control portion operates so as to make a HS-PDSCH data transmission timing notification portion send out HS-PDSCH data transmission timing information to the mobile station.