HARQ PACKET RETRANSMISSION METHOD USING INDEX CODING IN A HYBRID AUTOMATIC REPEAT REQUEST ENVIRONMENT WITHOUT FEEDBACK

摘要

To a packet retransmission method using index coding in an HARQ environment without feedback. The present invention provides a packet retransmission method using index coding in a HARQ environment without feedback, wherein in an environment for performing sidelink communication of LTE-based V2, a transmitting terminal of the side link is connected to a receiving terminal of the side link Determining whether to perform an XOR process on two retransmission packets when the retransmission is performed on the data of the first retransmission packet and the retransmission data of the second retransmission packet when the retransmission is performed on the two retransmission packets according to a determined probability; And retransmitting the data to the receiving terminal by performing an XOR process on the received data. According to the present invention, it is possible to implement a retransmission operation with a performance level similar to that of a feedback communication environment using a minimum amount of radio resources in a terminal-to-terminal communication environment without feedback, maximize terminal- The problem of signal interference which is the most problematic in the terminal-to-terminal communication can be greatly reduced.