The Backoff in Intermediate Networks for a Real-Time System Embedded Ethernet

A standard Ethernet implements carrier senses multiple access with collision detection (CSMA/CD) as the media access control (MAC) protocol to govern and control the data transmission between stations in a shared medium. The MAC protocol also contains the backoff algorithm responsible for rescheduling a packet's transmission after a collision has happened. However, most existing models are based on non-real-time systems, which is not an accurate representation of real-time network conditions. This paper aims to investigate the effects of different backoff algorithms, including Binary Exponential Backoff (BEB), Pessimistic Fibonacci Backoff (PFB), and Optimistic Linear Exponential Backoff (OLEB), based on the different conditions. This study examined the effects of backoff time on CSMA/CD and collision rate performance in a simple MAC. Simulated test results vary for all backoff algorithms depending on different network sizes and model conditions. Overall, the OLEB algorithm performs better than the other algorithms with networks of 15 active nodes, depending on the lower delay and better network performance measurements.