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Unex

OBU-201U

V2X On-Board Unit, IEEE 1609.x protocol stack

An automotive-grade V2X on-board unit with IEEE 1609.2/3/4 stack running on ThreadX RTOS, OBU-201U enables direct V2X application software porting on the SDK and API to meet "Tomorrow's V2X Innovation, Today."


Preloaded 1609.x stack and the SDK to Enable Innovative V2X Applications

Automotive-grade design and feature rich I/O ports provide the flexibility to explore innovative V2X applications. The open approaches enable direct V2X application software porting to shorten the development time of software-enabled service for time-to-market.

System

Powerful V2X Platform
Processor, DSRC RF, 128MB DDR3, 32MB NOR
Preloaded Firmware
IEEE 1609.2, 1609.3, 1609.4 and SAE J2735
Operation System
ThreadX RTOS
Development Tool
Unex® SDK, User’s Guide, support
DSRC V2X
Craton processor, Pluton RF
GNSS Positioning
GPS/Glonass/Galileo/QZSS constellations
Hardware Security
ECDSA 256 signing, secure private keys storage
Power Supply
DC 6-32V power-in
GNSS Hot Start
Vbatt. power for GNSS RTC hot start
Delay Power-On
Programmable cranking delay on
Power Management
Idle, ON, and OFF
File Integrity
Safe FAT, 8GB microSD
DSRC Antenna
FAKRA Z x 2
GNSS Antenna
FAKRA C active x 1
Automotive Design
-40°C ~ +85°C (Infineon SLE97: -20°C ~ +85°C)

Performance

DSRC Performance
Class C spectrum masks: +20dBm RF power at antenna port
Fading Sensitivity
Superior performance in multipath scenarios
Frequency Deviation
Frequency accuracy at ± 6.0ppm in –40°C ~ +85°C
Power Accuracy
Dynamic and accurate power in 4.5dBm ~ 25dBm
GNSS Performance
1.5m accuracy (CEP50 with SBAS), 10Hz refresh rate
Security Verification
over 2,000 ECDSA 256-bit verifications per second
Security Signing
< 50ms latency on ECDSA 256-bit signing
ESD Protection
IEC 61000-4-2 Level 4, Contact ±8kV, Air ±15kV

Flexibility

Feature Rich I/O
Ethernet, CAN, RS232, audio-out, microSD
External GNSS
RS232 supports external GNSS
GNSS Antenna
on-board MMCX connector, in addition to FAKRA C
Dual Power Input
4-pin or round jack
Data Storage
microSD slot, 8GB SDHC
V2X Enabling
Enabling V2X on the external host device

Typical

a standalone V2X on-board unit running on ThreadX OS in vehicle. A group of vehicles communicating with each other with OBU and V2X software installed.

V2V

V2I

Enables V2X on external host device with no impact on existing system architecture

Simply connects OBU-201U to external host device and programs preloaded OSLink firmware to provide software interfaces via UDP/Ethernet connection. The OSLink will behave as a relay of UDP/WSM payload which allows the external host device to send and receive J2735 compliant messages over DSRC.

Remarks: OSLink is only valid on version IEEE 1609.2/3/4 -2010 stack.

Use DSRC V2X to forward data stream through UDP/Ethernet

The OBU-201U/OSLink will behave as a relay of UDP/WSM payload to forwards data stream of software-enabled applications over DSRC between two OBU-201U connected nodes.

Remarks: OSLink is only valid on version IEEE 1609.2/3/4 -2010 stack.

Frequency Accuracy

Power Control Accuracy

Class C mask performance at +20dBm from -40°C ~ +85°C

Consistent EVM performance over a wide 5~22dBm power levels and -40ºC~+85ºC temperature range provide high channel efficiency.

25 degrees C 85 degrees C -40 degrees C
TX2 TX1 TX2 TX1 TX2 TX1
dut1 -28 -28 -29 -27.8 -27.7 -27.5
dut2 -30.5 -27.5 -30 -27 -30 -27.4
dut3 -31.4 -26.3 -30.2 -28.8 -28 -27

Connect OBU-201U RS-232 to PC USB port. Directly compile and deploy V2X applications on OBU-201U based on Unex's SDK

Innovative V2X safety, mobility, and environment applications on OBU-201U





Software

Operation System
ThreadX RTOS
Firmware
  • Preloaded standard compliance stack and firmware including:
  • IEEE 802.11p - 2010
  • IEEE 1609.2 - 2016
  • IEEE 1609.3 - 2016
  • IEEE 1609.4 - 2016
  • SAE J2735_201603
  • OSLink: WSM-UDP converter (only valid on IEEE 1609.2/3/4 -2010 stack)
Development Tool
  • Unex’s SDK (contains header files (.h), archived object codes (.a), example codes (.c), makefile, API guide, environment setup guide, quick start guide)
  • GCC cross compiler to compile ThreadX OS image under Linux
  • Hardware Guide
  • User’s Guide
System Service
RS-232 console, baud rate 115200 bps

Hardware

Main Chipset
CRATON, PLUTON, SL869, SLE97
Memory
32MB NOR, 128MB DDR3
DSRC
  • 5.85 ~ 5.925 GHz
  • 802.11p
  • ± 6.0ppm deviation
  • Class C +20dBm RF power
DSRC Sensitivity (typical, tolerance +2/-2dB)
-73 ~ -97dB (typical)
Learn more
Fading Sensitivity
  • Rural LOS: -92.5dBm
  • Highway LOS: -91.5dBm
  • Urban Approaching LOS: -91.5dBm
  • Crossing NLOS: -89.5dBm
  • Highway NLOS: -88.5dBm
GNSS
  • 1.5m accuracy (CEP50 with SBAS)
  • -135dBm sensitivity
  • NMEA 0183
Security
  • ECDSA 256-bit signing (<50ms)
  • private and public keys verification
  • secure storage of private keys in HSM
External Connector
  • two CAN 2.0b
  • one 10/100 Ethernet
  • one RS-232 console
  • one audio jack
  • ne reset button
  • one microSD socket
On-Board Interface
  • nine GPIO pins
  • MMCX connector
Antenna
  • two DSRC FAKRA Z
  • one GNSS FAKRA C
Power Supply
4-pin or round jack
Operation Voltage
DC 6-32 V ± 5%
Power Consumption
0.29 ~ 0.315A
Learn more
Power Management
Idle, ON. and OFF
Operation Range
  • ambient: -40°C ~ +85°C
  • (Infineon SLE97 -20°C ~ +85°C)
Product Dimension
125(L)x109.5(W)x30(H) mm

Package Contents

  • 1

    OBU-201U x 1 with preloaded IEEE 1609.2/3/4 stack running on ThreadX.

  • 2

    Two DSRC omni dipole detachable antennas, 5.9GHz FAKRA type Z.

  • 3

    One GPS active detachable antenna, FAKRA type C, cable length 5 meters.

  • 4

    One 4-pin power cable.

  • 5

    One 12V/1A 110~240V round-jack power adaptor.

  • 6

    SDK, Hardware Guide and User’s Guide downloaded from Unex server.

Ordering Information

OBU-201U
V2X On-Board Unit, 1609.x protocol stack
OBU-201E
V2X On-Board Unit, ETSI TC-ITS protocol stack
OBU-201
V2X On-Board Unit
EX-20
USB (A-male) to RS-232 (DE-9 male) cable, Prolific PL2303 chipset, cable length 1.8 meters

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