RETRANSMITTING METHOD USED FOR MULTI-CARRIER SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a suitable method using a synchronous non-adaptive retransmitting system by deforming it to a limitation which the synchronous non-adaptive retransmitting system has.

SOLUTION: A method for instructing not only transmission of new data but also re-transmission by using a data scheduling message is proposed. A method for determining an error to a reception acknowledgment signal transmitted from a reception side of data via other messages which are subsequently received is proposed. A re-transmission method in a multi-carrier system includes: a step for setting scheduling to data re-transmission as first re-transmission scheduling before re-transmission and receiving a grant message including scheduling information for uplink data transmission; a step for transmitting the uplink data by the scheduling information; and a step for recognizing that re-transmission of the data is required and re-transmitting the data by second re-transmission scheduling information to the data.

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