V2X Fusion Electronic Control Unit, IEEE 1609.x protocol stack

An extended temperature DSRC V2X-enabled Electronic Control Unit with cellular capability, HRU-201U provides preloaded IEEE 1609.2/3/4 stack running on Linux OS. The SDK enables direct Linux V2X and sensor fusion application porting on C/C++ user space code to explore "Beyond V2X Applications, Today."

Tomorrow's V2X Fusion, Today

Integration of module-structured i.MX6/Cellular/GNSS main board HVP-210, DSRC sub-system VTX-201 and V2X communication stack VPS-201U in an alu. enclosure, HRU-201U provides highest application flexibility with feature rich I/O connectivity.


Dual-System Integration
  • Main system: i.MX 6, Cellular, GNSS
  • DSRC sub-system: Craton, Pluton
Preloaded Firmware
IEEE 1609.2, 1609.3, 1609.4, SAE J2735
Operation System
Linux (Ubuntu 11.10, kernel 3.0.35)
Development Tool
Unex® SDK, User’s Guide, support
GNSS Positioning
GPS/Glonass/Galileo/QZSS constellations
Cellular Capability
u-blox® SARA supports regional frequency bands
System Memory
  • Main system: 2GB DDR3, 8GB NAND
  • Sub-system: 128MB DDR3, 32MB NOR
Extended Temperature
-40°C ~ +70°C (Infineon SLE97: -20°C ~ +85°C)
Power Supply
DC 10-24V
DSRC Antenna
GNSS Antenna
FAKRA C active x 1
Cellular Antenna
SMA x 1
Cellular Antenna
SMA x 1


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
ESD Protection
IEC 61000-4-2 Level 4, Contact ±8kV, Air ±15kV


i.MX 6 DualLite Scalability
Pin and software scalable to Dual/Quad
GNSS Flexibility
u-blox® NEO series or external GNSS
Feature Rich I/O
Ethernet, USB, CAN, RS232, micro-HDMI
On-Board Socket
Data Storage
microSD slot, 32GB/SDHC, 2TB/ SDXC

V2V and Beyond

V2I and Beyond

System Architecture

Modular Hardware Architecture

Linux Software Architecture

Advantages in Fusion, Migration, & Scalability

HRU-201U can not only be perfectly served as a feature rich and extended temperature DSRC V2X on-board unit, also provides high application flexibility to enable “V2X and Sensor Fusion applications, Today.” on its unique modular-structured architecture:

A. V2X Fusion
  • Enables V2X on DSRC sub-system to offload the processing power demand of the main system through RMII connection.
  • Enables V2X Fusion application on Linux with truly scalable Freescale® i.MX 6 CPU and u-blox® GNSS module with feature rich I/O ports.
  • Client-server system architecture provides a smooth software migration path to enable V2X on variable Linux main system, no impact on existing Linux software.
  • Enables V2X RF or wireless communication solution through on-board PCIe or I/O connectivity.
B. Software Architecture and Migration Path
Client-server dual- processor/system architecture enables flexible V2X system selection on Linux OS or ThreadX RTOS.It provides a smooth software migration path on existing software core competence.
C. Hardware Scalability
Truly scalable key components to achieve high flexibility to speed up V2X innovations.
  • Freescale® i.MX 6 DualLite scales to Dual or Quad core CPU.
  • u-blox® NEO-7P upgrades to NEO-M8L or M8U.
  • Removes un-needed 3G, GNSS, and HSM module or lowers DRAM/NAND Memory.
  • Enables LTE and Wi-Fi/Bluetooth (DHXA-222) wireless communication or 3rd party V2X RF through on-board PCIe or I/O ports.


Operation System
Linux OS (Ubuntu 11.10, kernel 3.0.35)
1609.2, 1609.3, 1609.4, SAE J2735
Development Tool
  • Unex’s SDK: API, sample codes
  • Hardware Guide
  • User’s Guide


Main Chipset
  • Main system: i.MX 6, onboard Cellular/GNSS modules
  • DSRC sub-system: Craton processor, Pluton RF
System Memory
  • Main system: 2GB DDR3, 8GB NAND
  • Sub-system: 128MB DDR3, 32MB NOR
  • 5.85 ~ 5.925 GHz
  • 802.11p, ITS-G5
  • ± 6.0ppm deviation
  • Class C +20dBm RF power
DSRC Sensitivity
-73 ~ -97dB (typical)
Learn more
1.5m accuracy (CEP50 with SBAS)
  • -135dBm sensitivity
  • NMEA 0183
External Connector
  • two CAN 2.0b
  • two USB 2.0
  • two 10/100 Ethernet
  • one RS-232 console
  • one micro HDMI
  • one reset button
  • one microSD
On-Board Interface
  • two cellular SIM
  • one mPCIe
  • one set of external GNSS pin.
  • six GPIO pins
  • extra pin headers
  • two DSRC FAKRA Z
  • one GNSS FAKRA C
  • one cellular SMA
  • three reserved connectors
Power Supply
6-pin power input
Operation Voltage
DC 10-24 V ± 5%
Power Consumption
Operation Temperature Range
  • ambient: -40°C ~ +70°C
  • (Infineon SLE97 -20°C ~ +85°C)
Product Dimension
188mm (L) x 114mm (W) x 32mm (H)

Package Contents

  • 1

    HRU-201U x 1 with preloaded IEEE 1609.2/3/4 stack running on Linux OS (Ubuntu 11.10, kernel 3.0.35).

  • 2

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

  • 3

    One GPS active detachable antenna, Fakra type C.

  • 4

    One Cellular/3G detachable antenna, SMA type.

  • 5

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

Ordering Information

V2X Fusion Electronic Control Unit, IEEE 1609.x protocol stack
V2X Fusion Electronic Control Unit, ETSI TC-ITS protocol stack
V2X Fusion Electronic Control Unit

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