Performance Analysis of Basic Automatic Repeat Request Protocols and Hybrid Automatic Repeat Request Protocol

The size of network and internet traffic is rising spontaneously by the day, with data usage at zettabyte to petabyte scale at an exponential high rate and therefore considered to generate huge traffic along the way which causes the chance of error in transmission to be high as well. Automatic Repeat Request (ARQ) protocol is an error control function for data transmission that uses acknowledgements. These protocols exist in Data link or Transport layers. ARQ is categorize into three major types such as Stop and wait, Go Bank N and Selective Repeat. Hybrid automatic repeat (HARQ) request which is an advancement to earlier mentioned protocols to detect error via cycle redundancy check was later developed. This paper evaluates the performance of these basic ARQs and HARQ protocols in consideration of the current state of high signal interference and collision during competitive accesses, more especially in highly densely networks.