How does UE decide to transmit ACK or NACK?

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What is Retransmission, ARQ and HARQ?

Introduction It’s very important to use solutions that improve the efficiency of the adopted model in any data communication system. If the transmission is ‘Wireless’, this need is even greater. [image] In this scenario we have techniques that basically checks, or verify if the information sent by the transmitter correctly arrived in the receiver. In the following example, we have a packet being sent from the transmitter to the receiver. [image] If the information arrived properly (complete…