Worst-case analysis of ethernet AVB in automotive system

The existing in-vehicle networks are not capable of accommodating increased data in vehicle and the demand of bandwidth. Next generation networks require higher bandwidth and shorter latency. Therefore, inexpensive and high bandwidth ethernet have be studied. IEEE802.1 Audio Video Bridging (AVB) is the standard used to transmit Audio and Video streaming data with guaranteed Quality of Service (QoS). AVB can reserve network resources using IEEE 802.1 Qat protocol with low latency and periodic messages using traffic shaping. In addition, it can transmit streaming data with Credit based Shaping (CBS) algorithms. In this paper, we analyzed CBS algorithms. In addition, we measured the worst case in embedded system.