1. In another method various alternatives of corrected versions of the first symbol sequence are determined and output to the user for verification purposes until a positive acknowledgement of an alternative or an abort command is received or until a limit value defined as an abort criterion is reached.

2. A method of supporting a hybrid automatic repeat and request (HARQ) at a user equipment in a mobile communication system comprises transmitting a first packet to a network (561 ), receiving a reception status signal for the first packet from the network (563), obtaining a negative acknowledgement signal (NACK) by decoding the reception status signal, and receiving supplemental control information indicating that the reception status signal is a positive acknowledgement signal (ACK)(564).