Journal Article
Pre-Shaping Bursty Transmissions under IEEE802.1Q as a Simple and Efficient QoS Mechanism
2018-04-03
2018-01-0756
The automotive industry is swiftly moving toward Ethernet as the high-speed communication network for in-vehicle communication. There is nonetheless a need for protocols that go beyond what standard Ethernet has to offer in order to provide additional quality of service (QoS) to demanding applications such as advanced driver-assistance systems (ADAS) or audio/video streaming. The main protocols currently considered for that purpose are IEEE802.1Q, audio video bridging (AVB) with the credit-based shaper (CBS) mechanism (IEEE802.1Qav), and time-sensitive networking (TSN) with its time-aware shaper (TAS) (IEEE802.1Qbv). AVB/CBS and TSN/TAS both provide efficient QoS mechanisms, and they can be used in a combined manner, which offers many possibilities to the designer. Their use however requires dedicated hardware and software components and clock synchronization in the case of TAS.
