OBU-201E

V2X On-Board-Unit, ETSI TC-ITS protocol stacks

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The OBU-201E is a standalone V2X on-board-unit embedded with ETSI TC-ITS protocol stacks running on ThreadX RTOS. Companies can directly deploy innovative V2X safety, mobility, and environment application programs on OBU-201E internal system through Unex’s V2X SDKincluding required API and sample codes.

OBU-201E’s benefits:

  • embedded ETSI TC-ITS V2X current ready protocol version ensures the best performance and compatibility.
  • direct V2X safety, mobility, and environment application deployment on time and within budget.  
  • automotive-grade design ensures vibrational and environmental reliability.
  • extensive I/O connectors provide flexible integration options.
  • Embeds ETSI TC-ITS V2X current ready version protocol stack (including updated GN, BTP, GN6, CAM, DENM, and security protocol stacks) and Unex’s V2X SDK (including required API and sample codes) for direct V2X applications on ThreadX RTOS.
  • Contains all V2X elements of RF (2*2), modem, security, positioning with pre-integrated ETSI TC-ITS V2X protocol stacks for OBU or RSU operation.
  • Autotalks CRATON 3-CPU core communication processor, PLUTON RF transceiver, Telit® SL869 GNSS receiver, Infineon® SLE97 HSM, 128MB DDR3, and 32MB NOR with extensive I/O interfaces provide powerful and flexible integration flexibility.
  • AEC-Q100 qualified V2X chipsets, 4-corner UV cured resin for BGA chips, and automotive-grade components in pin header design ensure vibrational and environmental reliability.
  • Class C spectrum masks compliance with +20dBm RF power at DSRC antenna port.
  • Superior fading sensitivity in multipath scenarios increases DSRC wireless coverage. 
  • Dual PHY and MAC support con-concurrent dual channel operation or single channel with optimal DSRC Tx/Rx diversity.
  • Internal 40MHz BW filter provides robust DSRC out-of-band radio interference immunity.
  • Infineon® SLE97 hardware security module and dedicated V2X firmware provide secure boot and secure signing in a tamper proof storage.
  • ECDSA 256-bit accelerator verifies all received packets and the performance exceeds the standards requirement.
  • High-performance Telit® SL869 GNSS receiver supporting RTCM provides accurate positioning at 10Hz refresh rate. 
  • Extensive connectivity provides the most flexible integration options: one 10/100Mbps Ethernet port, two CAN DE-9 (DB-9) ports, one RS-232 DE-9 (DB-9) port for system debug, one audio jack, and one microSD socket for data logging.
  • Dual DC 6-32V power inputs design: 4-pin automotive power connector or round jack provides application flexibility in the lab and vehicle.
  • Separate ACC and Vbatt power input on 4-pin power connector for automotive application. ACC provides whole system power supply, and Vbatt provides power supply to GNSS module RTC for hot start.

  • Onboard programmable delay ON circuitry (default 200ms) supports cranking delay ON function.
  • Power management: Idle, ON, and OFF state
  • 40V 3000W passive TVS, active IC LTC4365, and 80V dual MOS ensure robust UV/OV/RV protection on ACC trail.
  • Circuitry of 40V 3000W passive TVS on Vbatt trial - LT3014 – GNSS’ VRTC provides power trial protection for GNSS hot start.
  • State-of-the-art TVS on DSRC/GNSS antenna ports and CAN ports provide robust ESD protection.
  • Dedicated oscillator provides high frequency accuracy at ± 6.0ppm in –40ºC ~ +85ºC temperature range.
  • Dynamic and accurate power control in wide 4.5dBm ~ 25dBm range provides superior performance stability. .
  • Two Fakra type Z DSRC detachable antennas support receiver diversity and enable robust assembly in automotive application.
  • One Fakra type C active GNSS detachable antenna, cable length 5 meters.
  • Automotive-grade -40ºC ~ +85ºC components (Infineon SLE97 supporting -20ºC ~ +85ºC now) ensure environmental reliability.
  • RoHS compliance meets environment-friendly requirements.
Software Specifications
Operation System ThreadX RTOS 
Protocol Stacks ETSI TC-ITS current ready protocol version :
  • GNETSI EN 302 636-4-1V1.2.1
  • BTPETSI EN 302 636-5-1V1.2.1
  • GN6ETSI EN 302 636-4-1V1.2.1, ETSI EN 302 636-6-1 (V1.2.1) will be supported
  • CAMETSI EN 302 637-2V1.3.2
  • DENMETSI EN 302 637-3V1.2.2
  • SECETSI TS 103 097V1.1.15,  ETSI TS 103 097 (V1.2.1) will be supported 
Development Tool

Unex’s V2X SDK (including ETSI TC-ITS V2X protocol stack API, sample codes, and tool-chain)

System Service

RS-232 console port (baud rate 115200 bps)

Hardware Specifications
Main Chipset
  • Autotalks CRATON (ATK4100) V2X communication processor, three 240MHz CPU cores.
  • Autotalks PLUTON (ATK3100) V2X RF Transceiver
  • Telit SL869 GNSS module
  • Infineon SLE97 Hardware Security Module (HSM)
Memory

32MB NOR system memory and 128MB DDR3 storage memory

DSRC Frequency Band 5.85 ~ 5.925 GHz (5.15 ~ 5.925GHz full band by project)
DSRC Radio Mode ITS-G5
DSRC Channels

172, 174, 176, 178, 180, 182, 184 (5.9GHz DSRC)

( Remark: DSRC messages over 5.15 ~ 5.925 full bands will be supported by project base.)

DSRC Channel Bandwidth 10MHz (5MHz & 20MHz by project)
DSRC Data Rate

3, 4.5, 6, 9, 12, 18, 24, 27Mbps for 10MHz BW signal

DSRC Frequency Accuracy

± 6.0ppm

DSRC Transmit Power Class C spectrum mask compliance with +20dBm RF power
DSRC Static Sensitivity (Typical)
Conditions -40°C +25°C +85°C
3Mbps -97dBm -93dBm -92dBm
4.5Mbps -97dBm -93dBm -92dBm
6Mbps -95dBm -91dBm -91dBm
9Mbps -93dBm -89dBm -89dBm
12Mbps -90dBm -86dBm -85dBm
18Mbps -86dBm -83dBm -83dBm
24Mbps -80dBm -75dBm -75dBm
27Mbps -78dBm -74dBm -73dBm
DSRC Fading Sensitivity

Power @ 10% PER sensitivity (6Mbps, 1000B packet), fading channels as 5 typical C2C multipath scenarios defined by ETSI: ± 2dBm

  • Rural LOS: -92.5dBm
  • Highway LOS: -91.5dBm
  • Urban Approaching LOS: -91.5dBm
  • Crossing NLOS: -89.5dBm
  • Highway NLOS: -88.5dBm
DSRC Antenna two Fakra type Z 5.9 GHz /5dBi Omni Dipole detachable antennas
GNSS Radio Telit SL869 integrated GPS and Gloness receiver
GNSS Refresh Rate 10Hz
GNSS sensitivity -135dBm
GNSS NMEA Standard NMEA 0183
GNSS accuracy
  • typical horizontal position accuracy: 4.0 meters
  • RTCM supported: 3.5 meters
GPS  Antenna one active Fakra type C detachable antenna, cable length: 5 meters
Security
  • ECDSA Signing (<50ms)
  • ECDSA 256-bit Verification
  • Secure storage of private keys in HSM
Interface
  • two DB-9 female CAN ports
  • one 10/100Mbps Ethernet port
  • one DB-9 female RS232 for system debug (baud rate 115200 bps)
  • one audio jack
  • one reset button
  • one microSD socket for flash memory
Power Supply

dual DC 6-32V power inputs:

  • one 4-pin connector supporting Vbatt. and ACC;
  • one DC round jack connector
Operation Voltage DC 6-32 V ± 5%
Power Consumption
12V power input
Conditions -40°C +25°C +85°C

Tx @20~8dBm

(RF duty cycle=7%)

0.3A 0.3A 0.315A
Idle 0.29A 0.29A 0.3A
Power Management three states of Idle, ON. and OFF
Operation Temperature Range

ambient: -40°C~ +85°C

(Infineon SLE97 Hardware Security Module supports -20°C ~ +85°C)

Operating Humidity 10% ~ 95%, non-condensing
Storage Humidity max. 95%, non-condensing
Environment-Friendly Compliance RoHS
Housing zinc coating steel plate, thickness: 1.0mm
Product Dimension 125mm (L) x 109.5mm(W) x 30mm (H)
Packing Box Size 305mm (L) x212mm (W) x 68mm (H)
Carton Packing 4 boxes in one carton