Negative Acknowledgement-Based ARQ Protocol Efficiency in Unicast Data Networks

Abstract

Automatic Repeat Request (ARQ) protocols are essential in modern data communication systems to guarantee a reliable transmission over imperfect physical links. Due to the large variation in implementation complexity and performance, depending on the link quality, performance analysis is very important for the right choice of protocol for a particular implementation. This paper models different error rate data (wireless, wireline) links and analyses the performance of positive acknowledgment based (ACK) Stop-and-Wait, Go-Back-N and Selective-Repeat protocols and negative acknowledgement based (NAK) Selective-Repeat protocol.