Performance analysis of IEEE-1394b bus isochronous transmission

IEEE-1394b is a high speed data bus, which has been successfully utilized in avionics. Its isochronous transmission assures definite transmission delay of data, and is widely adopted in multimedia data transmission. To solve the performance evaluation problem of isochronous transmission, deterministic and stochastic Petri net (DSPN) model of IEEE-1394b isochronous transmission was developed. The proposed model considers the effect of bandwidth reservation and arbitration mechanism, which have remarkable effect on isochronous transmission performance, and the bus activity was described precisely. Through simulation, the relations among system’s throughput, average waiting time, packet size, packet arrival rate and node count were numerical studied. The limitation of IEEE-1394b isochronous transmission throughput was also obtained.