Performance analysis of a hybrid TDMA-CSMA/CD protocol for bus networks

A hybrid TDMA-CSMA/CD protocol for medium access in local area bus networks is introduced. The performance and charactristic of buffered hybrid protocol is analysed, a new kind of queue model Is used to simplify a multi-dimensional Markov chain to a two-dimensional Markov chain. Buffered hybrid protocol is studied simimulatically finally. The result shows that throughput performance of buffered hybrid protocol is better than CSMA/CD protocol. On low load, delay is worse than CSMA/CD. On high load, delay is better than CSMA/CD.