Communication device, radio communication terminal, radio base station and communication method

摘要

The present invention aims to largely improve a probability of successfully receiving a PDU retransmitted by a transmitter. To this end, provided is a communication method for continuously receiving multiple PDUs from a radio base station via a radio link. The method includes the steps of determining whether or not any one of the multiple PDUs is lost; and making an instruction to the radio base station to increase the transmission power of the radio base station when it is determined that any one of the multiple PDUs is lost, the instruction being made before a retransmission timing when the transmitter retransmits the lost data piece.