Method of transmitting data using HARQ

摘要

A method of data transmission using HARQ is provided. The method includes transmitting an uplink data, receiving an ACK/NACK signal for the uplink data, keeping the uplink data in a HARQ buffer when the ACK/NACK signal is an ACK signal, and retransmitting the uplink data when an uplink scheduling information for retransmission of the uplink data is received. In the present invention, a transmission error in an ACK/NACK signal is promptly detected, and thus data can be transmitted at a high speed.

主权项

1. A method of data transmission using a hybrid automatic repeat request (HARQ) scheme performed by a transmitter, the method comprising:
transmitting data to a receiver; receiving an acknowledgement (ACK) signal for the data from the receiver; determining whether or not an uplink grant associated with the ACK signal is received; and keeping the data in a HARQ buffer if it is determined that the uplink grant associated with the ACK signal is not received within a certain time period from the receiver, wherein, if retransmission is requested, the transmitter determines whether a measurement gap exists at retransmission time, and wherein a number of current transmissions is incremented by one if the retransmission is requested.