For the past several years, DSRC has been the only V2X technology available. After a long period of multiple large-scale field tests, DSRC based V2X went into production in Japan in 2015 and in the US in 2017 in selected vehicle models. In 2019, VW released its Golf 8 with DSRC based V2X, making Europe’s most popular car the first mass market vehicle with V2X.
2. For the past several years, DSRC has
been the only V2X technology available.
After a long period of multiple large-scale
field tests, DSRC based V2X went into
production in Japan in 2015 and in the
US in 2017 in selected vehicle models.
3. In 2019, VW released its Golf 8 with
DSRC based V2X, making Europe’s
most popular car the first mass
market vehicle with V2X.
4. The more recent C-V2X technology
has the same purpose of direct
communication link between
vehicles
5. C-V2X is defined by 3GPP based on
cellular modem technology, leading to
fundamentally different non-
interoperable access layer with DSRC.
Aside from that, the two technologies
are addressing identical use-cases and
having identical network, security and
application layers.
6. While DSRC-based V2X is deployed in
Europe and Japan, C-V2X is gaining
momentum in other regions. In the US,
thousands of Road Side Units were
equipped with DSRC V2X and OEMs
began planning their deployment.
7. The industry is watching the FCC as it plans
to divide the allocated 5.9GHz band between
V2X and WiFi. China, on the other hand, is
moving ahead with the deployment of C-V2X.
In early 2020, Autotalks chipset was selected
for a mass production C-V2X program in
China.
8. The table highlights the
commonalities and differences
between the usability and general
properties of DSRC and C-V2X.
9. DSRC and C-V2X are rooted from different
technologies, leading to fundamentally
different operational methods. DSRC,
derived from WiFi, is optimized for cost and
simplicity, and inherently supports distributed
operation. C-V2X, derived from LTE, added
new mechanisms to enable distributed
operation (mode 4).