Wireless communication apparatus, wireless communication system and wireless communication method
In a wireless communication apparatus performing data transmissions using a plurality of code words, as to a response time in which a transmitting station transmits data to a receiving station and receives a response signal (Ack/Nack signal), it is arranged that the period of a first response time corresponding to a higher-level code word be shorter than that of a second response time corresponds to a lower- level code word.
Abstract
To enable the utilization of the information of a different code word during a retransmission and improve the transmission characteristic in a case of using a plurality of code words. In a wireless communication apparatus performing data transmissions using a plurality of code words, as to a response time in which a transmitting station (BS) transmits data to a receiving station (UE) and receives a response signal (Ack/Nack signal) therefrom, it is arranged that the period of a first response time (RTT1) corresponding to a higher-level code word be shorter than that of a second response time (RTT2) corresponding to a lower-level code word.The receiving station uses at least one of the initially received data and retransmitted data of higher-level code word to decode the received data of lower-level code word, and then generates and transmits response signals in accordance with the results of decoding the respective code words. The transmitting station acquires the response signals at timings of the respective code words and performs a retransmission control using HARQ.