THE METHOD AND THE DEVICE FOR TRIGGERED REPEAT IN THE MULTICAST SYSTEM

摘要

The method for triggered repeat in the multicast system includes, the base station eNB sets the repeat condition according to the channel state, and sends the condition to the UE. When the UE receives the block with error, it compares the current channel state indication with the repeat condition received. When the condition is satisfied, the UE sends the NACK signaling to the eNB, so the information can be sent again. So the feedback information in the uplink channel is restricted, and the repeat probability is in the proper scope, and the optimal ratio of the efficiency and the power can be achieved.