Method for retransmitting data efficiently in mobile communication system

A method for retransmitting data between two sides including a reception side and a transmission side in a mobile communication system including one or more mobile stations and one or more radio networks, the method comprising the steps of:

• a) at the reception side, storing data received from the transmission side in a first storage unit;
• b) as a result of an error-checking procedure, if the data is erroneous, requesting the transmission side to retransmit the data;
• c) at the transmission side, retransmitting to the reception side the requested data and a transport format combination indicator (TFCI);
• d) by a combination unit included in the reception side, combining the retransmitted data with the data stored in the first storage unit;
• e) if the combined data are not erroneous, clearing the data and the retransmitted data from the first storage unit and transmitting the combined data to a first upper layer included in the reception side;
• and
• f) in response to an ACK signal from the reception side representing that normal data has been received, clearing the retransmitted data from a second storage unit at the transmission side.

Computer-readable record media storing instructions for performing a method for retransmitting data between two sides including a reception side and a transmission side in a mobile communication system including one or more mobile stations and one or more radio networks, the method comprising the steps of:

• a) at the reception side, storing data received from the transmission side in a first storage unit;
• b) as a result of an error-checking procedure, if the data is erroneous, requesting the transmission side to retransmit the data;
• c) at the transmission side, transmitting to the reception side a first information related to retransmission and retransmitting the requested data;
• d) at a combining unit at the reception side, combining the retransmitted data with the data stored in the first storage unit;
• e) if the combined data is not erroneous, clearing the data and the retransmitted data from the first storage unit and transmitting the combined data to a first upper layer included in the reception side;
• and
• f) in response to an ACK signal from the reception side representing that normal data has been received, clearing at the transmission side the retransmitted data from a second storage unit.

Computer-readable record media storing instructions for performing a method for retransmitting data between two sides including a reception side and a transmission side in a mobile communication system including one or more mobile stations and one or more radio networks, the method comprising the steps of:

• a) at the reception side, storing data received from the transmission side in a first storage unit;
• b) as a result of an error-checking procedure, if the data is erroneous, requesting the transmission side to retransmit the data;
• c) at the transmission side, retransmitting to the reception side the requested data and a transport format combination indicator (TFCI);
• d) by a combination unit included in the reception side, combining the retransmitted data with the data stored in the first storage unit;
• e) if the combined data are not erroneous, clearing the data and the retransmitted data from the first storage unit and transmitting the combined data to a first upper layer included in the reception side;
• and
• f) in response to an ACK signal from the reception side representing that normal data has been received, clearing the retransmitted data from a second storage unit at the transmission side.