A mobile station comprising: means for controlling a control cycle for a discontinuous reception, the control cycle being constant and comprising a reception period and a reception halt period, whereby the control cycle is the total of both periods; means for receiving, from a base station, retransmission data according to a Hybrid Automatic Repeat reQuest, HARQ, process or new transmission data; means for determining, based on the HARQ process, whether the retransmission data or the new transmission data are successfully received or not; and means for transmitting, to the base station, a reception result of the retransmission data or the new transmission data, as a reception result notification signal according to the HARQ process; the mobile station characterized by comprising: means for extending the reception period in the control cycle if the retransmission data or the new transmission data have been determined to be not successfully received, wherein the reception halt period is shortened as much as the reception period is extended; the means for receiving, being further adapted to receive, in the extended reception period in the control cycle, further retransmission data; and packet reception halt means for halting the packet reception by switching, in the control cycle, from the extended reception period to the shortened reception halt period if the retransmission data have been determined to be successfully received. means for controlling a control cycle for a discontinuous reception, the control cycle being constant and comprising a reception period and a reception halt period, whereby the control cycle is the total of both periods; means for receiving, from a base station, retransmission data according to a Hybrid Automatic Repeat reQuest, HARQ, process or new transmission data; means for determining, based on the HARQ process, whether the retransmission data or the new transmission data are successfully received or not; and means for transmitting, to the base station, a reception result of the retransmission data or the new transmission data, as a reception result notification signal according to the HARQ process; the mobile station characterized by comprising: means for extending the reception period in the control cycle if the retransmission data or the new transmission data have been determined to be not successfully received, wherein the reception halt period is shortened as much as the reception period is extended; the means for receiving, being further adapted to receive, in the extended reception period in the control cycle, further retransmission data; and packet reception halt means for halting the packet reception by switching, in the control cycle, from the extended reception period to the shortened reception halt period if the retransmission data have been determined to be successfully received. means for extending the reception period in the control cycle if the retransmission data or the new transmission data have been determined to be not successfully received, wherein the reception halt period is shortened as much as the reception period is extended; the means for receiving, being further adapted to receive, in the extended reception period in the control cycle, further retransmission data; and packet reception halt means for halting the packet reception by switching, in the control cycle, from the extended reception period to the shortened reception halt period if the retransmission data have been determined to be successfully received.