roll working group ietf 72 in-vehicle routing requirements in low power and lossy networks ryuji...
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ROLL Working Group IETF 72
In-Vehicle Routing Requirements in Low Power and Lossy Networks
Ryuji WakikawaHiroshi Kuwabara
Toyota InfoTechnology Center Co., Ltd.
ROLL Working Group IETF 72
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 sensorsRemoving cables from vehiclesCost 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
ROLL Working Group IETF 72
Characteristics and Requirements ECU (Electronic Control Unit), Ac
tuator, Sensor are all connected by several dedicated BUS systems in an automobile. CAN (Control Area Network), LI
N (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 netw
orks 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
ROLL Working Group IETF 72
Example Activity in Automotive Industry
ROLL Working Group IETF 72
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
ROLL Working Group IETF 72
ZC
Coordinator
ZED
End Device
ZR
Router
2ndRoof
3rdLeft
3rdRight
2ndLeft
1stLeft
2ndRight
1stRight
Steering
Instrument Panel
1st1Roof
Cabin
Back end
042C
0572
0573
0568
056C
042D 0563
042B
040E
0431
0449
Zigbee Communication Measurement
ROLL Working Group IETF 72
Engine
Middle Up
Instrument Panel
Engine
Middle LowEngine
Left Low
Engine
Right Low
0572
04260432
043D0428
Engine Room
Engine
Inverter Module
Zigbee Communication Measurement
ROLL Working Group IETF 72
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