Simulated Performance Evaluation of a MAC-Layer Hybrid Protocol for Multi-Channel Control Networks (MITION)

In this paper an efficient hybrid MAC-layer protocol for multi-channel networking structures is presented and evaluated. This protocol, named MITION, is suitable for control applications, where high operational reliability is required and strict performance criteria exist, due to the need of critical-time response for time-constrained information packets. The MITION protocol uses a channel selection procedure, which provides an efficient “switching” operation for the selection of the available communication channels. This procedure is combined with a hybrid channel access procedure, which exploits the 1-persistent CSMA/CD and the virtual token passing mechanisms. Additionally, a mechanism for the insertion and deletion procedures of stations is proposed. The MITION protocol, due to its hybrid and multi-channel nature, offers (a) bounded packet delay and stable operation under heavy traffic conditions, (b) high throughput vs. mean packet delay performance, (c) efficient handling of mixed (aperiodic/periodic) channel traffic, and (d) high operational reliability.