Branch-switching in unidirectional channel systems using the IEEE 802.4 token-passing bus access method

In this paper, a distributed access control method is introduced for branched unidirectional channel environments. Branched systems already enjoy wide usage employing conventional CSMA/CD and Token-Passing Bus media access methods. However, in such systems it is well known that performance degrades with an increase in the normalized system end-to-end propagation delay. The proposed method minimizes this effect by employing an efficient modified …