AVB for Automotive

Conventional IEEE 802.3 Ethernet is unable to meet the connectivity and multimedia requirements of next-generation automotive infotainment networks. Its limitations include lack of precision timing mechanism, lack of QoS and no mechanism to prevent network congestion. Ethernet Audio Video Bridging (AVB) overcomes these limitations by providing timing synchronization, eliminating buff­er delay through the network and creating resource reservation. AVB defines a set of technical standards developed by the Institute of Electrical and Electronics Engineers (IEEE) Audio Video Bridging Task Group of the IEEE 802.1 standards committee. AVB is well positioned to be the technology of choice for building next-generation automotive infotainment networks. It o­ffers several advantages such as, easy to manage, built on IEEE standards, aff­ordable and Ethernet-based, single network for all media.

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AVB for Automotive

Conventional IEEE 802.3 Ethernet is unable to meet the connectivity and multimedia requirements of next-generation automotive infotainment networks. Its limitations include lack of precision timing mechanism, lack of QoS and no mechanism to prevent network congestion. Ethernet Audio Video Bridging (AVB) overcomes these limitations by providing timing synchronization, eliminating buff­er delay through the network and creating resource reservation. AVB defines a set of technical standards developed by the Institute of Electrical and Electronics Engineers (IEEE) Audio Video Bridging Task Group of the IEEE 802.1 standards committee. AVB is well positioned to be the technology of choice for building next-generation automotive infotainment networks. It o­ffers several advantages such as, easy to manage, built on IEEE standards, aff­ordable and Ethernet-based, single network for all media.

Aricent’s AVB for Automotive provides a complete set of AVB protocols enabling transport and synchronization services to multimedia applications with associated quality of service. It provides end-point implementation (talker and listener) and abstraction to OS and hardware.

Aricent’s AVB for Automotive can be leveraged by automotive OEMs, Tier 1s, system integrators and silicon vendors to build applications such as Automotive IVI systems, Advanced Driver Assistance Systems (ADAS), Security and monitoring

Features

  • Implements AVnu specified automotive AVB feature set
  • Talkers and listener support
  • Interoperability with third-party AVB Switch (AV Bridge) and end-stations
  • Ready for automotive market
    • Coding guidelines: MISRA (Motor Industry Software Reliability Association) 2012
    • ISO26262: fit for purpose
  • Currently runs on Linux, with support for QNX and Android in the roadmap
  • Compliant to IEEE standards
    • IEEE 802.1BA - Audio Video Bridging (AVB) systems
    • IEEE 802.1AS: Timing and synchronization for time-sensitive applications (gPTP)
    • IEEE 802.1Qat: Stream Reservation Protocol (SRP) – MSRP, MVRP,MMRP
    • IEEE 802.1Qav: Forwarding and Queuing for Time-Sensitive Streams (FQTSS) – Credit-based shaping
    • IEEE 1722: Layer 2 Transport protocol for time sensitive applications in a bridged LAN – Supports MJPEG, MPEG2-TS, H.264 and 61883-6 formats

Benefits

  • Easy-to-use APIs for creating audio and video end-point applications
  • Hardware layer abstraction for easy porting and integration
  • Multiple talkers and listeners can run simultaneously
  • Supports hardware time-stamping and trac shaper
  • Configurable as grand master or slave. Supports Best Master Clock
  • Algorithm (BMCA) implementation
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