How to switch between the synchronous HARQ retransmission mode and the asynchronous HARQ retransmission mode

摘要

The present invention is directed to a method of controlling the transmission timing of data retransmissions in a wireless communication system wherein a HARQ retransmission protocol is used to retransmit data from a transmitting entity to a receiving entity via a data channel. Furthermore, a base station using the present invention, a mobile terminal, the present invention relates to communication systems. To overcome the problems resulting from synchronous retransmissions in critical situations interference, the present invention introduces additional feedback signaling to a new HARQ protocol. The new NACK-S indicates to the transmitting entity to be stopped and be synchronized send a retransmission, and waits for a scheduling assignment for the retransmission from the receiving entity.