Application of 10BASE-T1S Ethernet in Delay-Sensitive Vehicular Networks

10BASE-T1S, one of the automotive Ethernets, provides all nodes the transmission opportunity in sequence by using the Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) in a half-duplex multidrop mode. However, its maximum delay approaches several milliseconds, and therefore, cannot be used in the time-sensitive communications that require delay of less than a few microseconds. In this study, an expanded PLCA algorithm is proposed that assigns a high priority to the time-sensitive packets and transmit them with a small delay by employing the concept of transmission interrupt. An implementation scheme for the proposed algorithm is suggested and the performance is estimated by simulation.