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In-Vehicle Routing Requirements in Low Power and Lossy Networks

In-Vehicle Routing Requirements in Low Power and Lossy Networks. Ryuji Wakikawa Hiroshi Kuwabara Toyota InfoTechnology Center Co., Ltd. Why in-vehicle networks. Current in-vehicle networks*

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In-Vehicle Routing Requirements in Low Power and Lossy Networks

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  1. In-Vehicle Routing Requirements in Low Power and Lossy Networks Ryuji Wakikawa Hiroshi Kuwabara Toyota InfoTechnology Center Co., Ltd.

  2. Why in-vehicle networks • Current in-vehicle networks* • In vehicles, wired harness have about 4000 parts, weight as much as 40kg. It includes more than 1900 wires for up to 4km. • Automotive sensor market volumes exceed 665 million units in USA and 2237 million units in global • Why wireless? • Easy placement • tire pressure monitor sensors • Removing cables from vehicles • Cost of cabling inside a vehicle *Intra-vehicular Wireless Networks by M. Ahmed, M. Ames*, T. ElBatt+, C. Saraydar*, T. Talty*, J. Yin, AutoNet 2007, HRL Laboratories, USA; *General Motors R&D, USA; +San Diego Research Center, USA; and #TrellisWare Technologies, USA

  3. ECU (Electronic Control Unit), Actuator, Sensor are all connected by several dedicated BUS systems in an automobile. CAN (Control Area Network), LIN (Local Interconnect Network), FlexRay, MOST Power Train, Chassis, Body, Infotainment, Drive Assistance Networks Characteristics of in-vehicle network High density (piles of sensors, ECUs, actuators) Wired/Wireless integrated networks Obstacles(!) inside a vehicle passengers, ski board, bicycle, etc. long-term lifecycle Routing Requirements Low Power Path Reliability Subnet Support QoS Support Scalability Latency Network Convergence (Wired/Wireless) Manageability Mobility Security Characteristics and Requirements

  4. Example Activity in Automotive Industry

  5. Zigbee Propagation Measurement • Estima (Previa named in USA) (MPV 1Box type) Hybrid • Topology : Peer to Peer (Coordinator and End Device) • CH ：26ch fix （2480 ± 1 MHz don’t conflict 802.11b/g ) • Tx Power ：4dBm, Tx Packets ：80bytes X 100 times

  6. Cabin 1st1Roof 042B 2ndRoof 040E 042C Steering 0572 1stRight Instrument Panel 2ndRight 0573 042D 0563 3rdRight 0568 1stLeft 0431 ZC Coordinator 2ndLeft 056C ZR Router 3rdLeft ZED End Device 0449 Back end Zigbee Communication Measurement

  7. Engine Room Instrument Panel 0572 Engine Middle Up 0432 0426 Engine Engine Right Low 0428 043D Engine Middle Low Engine Left Low Inverter Module Zigbee Communication Measurement

  8. References • Intra-vehicular Wireless Networks, M. Ahmed, M. Ames*, T. ElBatt+, C. Saraydar*, T. Talty*, J. Yin, AutoNet 2007 • Design And Realization of An IP-Based In-Car Network Architecture, Rainer Steffen, et.al, ISVCS 2008

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