Abstract:

This paper studies the performance of a high speed linear token passing data bus. Based on a queuing system model the relationship between network characteristics such as message latency, waiting queue length and network throughput are derived and expressed in functional equations. The performance difference between AS4074 and Pave Pillar HSDB protocol is underlined. The results show that under moderate or low bus load condition, the performance of AS4074 is superior to that of Pave Pillar HSDB, and more suitable to meet the needs of new generation avionics systems.

Key words: performance analysis, linear token passing bus, network protocol, avionics