With the demand for connected cars growing, the industry is witnessing many changes in the
vehicle communication systems. The automotive industry is making rapid strides to improve
the overall safety aspects and user experience for the driver as well as the passengers of the
vehicle. From connected infotainment to ADAS (advanced driver-assistance systems), the
vehicles are evolving to communicate directly with each other (V2V) and with the roadside
infrastructure (V2I) while navigating their path. This vehicular communication is termed as
V2X (V2V & V2I).
“Automotive test engineers face significant challenges most notably in the areas of
interoperability and cyber security, due to increasing integration of V2X, ADAS and
automated systems. V2X is significant since it is the only technology that can sense Non-Line
of Sight Objects. Sensors like Camera, RADAR & LIDAR can sense only line of sight
objects, and hence V2X shall become a mandatory feature even in autonomous vehicles
moving forward,” opines Prasad Karambelkar, Head - Wireless Practice, Tata Elxsi - a
design-led technology company headquartered in Bengaluru.
There are two V2X Communication Standards widely used, namely Dedicated Short-Range
Communication (DSRC) & C-V2X (LTE-V). DSRC is based on 802.11p standard, which
offers a communication range of 300 meters, and C-V2X is an LTE standard that offers a
communication range of around 1 mile. “Automotive OEMs back either of these standards
across the World. With 5G rollouts happening globally, we can expect 5G based C-V2X
technology also being rolled out in the coming years,” said Karambelkar.
These changes are leading to new testing requirements of vehicle-to-everything (V2X)
communications. Increasing safety regulations have led to the adoption of various types of
communication technologies in a vehicle such as adaptive cruise control (ACC), driver
assistance system, lane change assistance, blind spot detection, and many more. “This is
expected to significantly drive the demand for V2X communication. In addition, the
advancements in different sensor technologies and evolving functional safety requirements,
along with various regulatory compliances will mean that testing requirements will only
increase over the new few years,” explains Prasad Karambelkar.
The global V2X market size is projected to grow from $ 659 million in 2020 to $ 2.8 billion
by 2025, at a CAGR of 33.5 per cent, according to the global market research firm Markets
and Markets. The increasing trend of vehicles with V2X technologies and increasing cyber-
attacks in the automotive industry are expected to drive the market for V2X testing.
V2X Emulator: An effective aid for V2X testing
Validation of the connected vehicles/V2X systems is a highly challenging due to the critical
nature of the safety applications and intersection of technologies involved in V2X systems.
Prasad Karambelkar says, “They require extensive testing prior to its adoption into vehicles.
The plethora of regional/country specific standards that need to be complied with, only adds
to this complexity. V2X Testing is a cumbersome process usually done on a field with real
cars and roadside deployments. It involves high costs and safety concerns.”
To solve these concerns, Tata Elxsi - an expert in new technologies and innovative design -
offers a comprehensive test solution for V2X testing solution, V2X Emulator. “Tata Elxsi
V2X Emulator is a solution designed to perform a real world like V2X testing in a lab. The
solution, which comes pre-integrated with leading test equipment, offers greater choice and
flexibility for customers. In addition, the solution is quite flexible to be integrated with the
choice of test equipment chosen by the customer, this helps in extracting greater value from
existing test infrastructure investments,” explains Karambelkar.
The V2X Emulator solution can generate real-world conditions that can source necessary
GNSS & CAN signals for V2X application testing. V2X Emulator works on real hardware
with real time signals involving actual RF signals and, therefore, guarantees the performance
experienced in the lab is very closer to the performance in the field. “The solution is intuitive
to use and has been designed keeping the test engineer in mind. In addition, the solution can
also be integrated with HILS (hardware-in-the-loop simulation) setup, which is a de-facto test
environment for automotive validation. Thus, Tata Elxsi not only offers the V2X emulator
solution but also the critical engineering services to support its customers with their specific
requirements,” he claims.
Some of the distinct features of V2X Emulator are:
V2X Emulator assisting road safety
V2X Emulator is capable of testing V2X applications, debugging and retesting instantly
inside a laboratory. Customers can spend their time in application development and testing
rather than concentrating on setting-up V2X infrastructure. V2X Emulator is agnostic of
communication protocol; hence, it can accommodate LTE-V or 5G technologies along with
the existing DSRC (Dedicated Short-Range Communications) protocol without the need of
changing the equipment set-up.
He explains, “Millions of miles of tests can be performed in the labs with thousands of test
scenarios. This allows for better test coverage including various sorts of test conditions like
signal attenuation and losses that are hard to replicate in field tests. Thus, the V2X Emulator
is a smarter way to test V2X communication and detect defects much earlier in the
development cycle reducing the time and money spent in exhaustive field tests.”
The solution will benefit the customers in the following ways:
Cost: Significant reduction in Field-testing cost by saving test track, car deployment and
logistical costs associated with the Field-testing
Time: Faster Time-to-Market as it reduces Field testing efforts and reduced field-testing
Quality: Comprehensive test coverage with respect to signal strength, terrain and channel
conditions. Can be tested for ECU performance, assuring the quality of the solution being
With a kind of possibilities offered by V2X Emulator, Tata Elxsi is eyeing to target overseas
customers. Prasad Karambelkar says, “We are looking at offering V2X Emulator as test
solution to automotive OEMs, tier-1 suppliers, V2X application providers, regulatory
agencies, R&D companies as well as universities involved in connected vehicle research. We
are targeting global customers across these segments. We are not just looking to license our
solution but also offer value added services to our customers.”
- Rakesh Rao