DSRC no dead end, says Autotalks CTO

November 24, 2016 // By Christoph Hammerschmidt
Vehicle-to-X communications (V2X) holds the promise of more safety, better traffic flow, and in certain applications like platooning significant better fuel efficiency. Despite such benefits, there is a dissent about the underlying technology.

In the first place, the technology to be used for V2X is widely defined and standardized. After lengthy discussions, large parts of the industry agreed upon using DSRC (Dedicated Short-Range Communications). The technology is standardized as IEEE802.11p, and in a number of trials over the past years its feasibility and reliably has been proven. Recently however, Qualcomm piped up with its position that DSRC is a “dead end”. In an interview published in eeNews Europe’s sister publication EE Times , Qualcomm senior vice president of engineering, Durga Malladi, held the view that V2X should be cellular based because it is the more progressive and modern technology. DSRC in contrast, being defined almost ten years ago, is regarded as outdated.

This view triggered fierce contradiction. Onn Haran, Chief Technology Officer from chipmaker Autotalks (who claims market leadership in the area of V2X chipsets), defends the DSRC technology. “DSRC is by no means a dead end street”, Haran said in an interview with eeNews Europe. Quite the contrary, DSRC is about ready to be introduced to the market after major tier one suppliers like Denso and Delphi have successfully concluded their tests, Haran said. He also quoted a recent study from MarketsandMarkets that predicts high growth rates for DSRC equipment. His basic argument: While the DSRC (or IEEE802.11p) is a standardized technology, the idea of implementing V2X applications on cellular technologies is far from being ready to deploy because the standardization and not even the technology development is completed.


Autotalks CTO Onn Haran:
"DSRC is available, V2X LTE not"

“The basic problem is that it is difficult to compare something that does not yet exist to something that does exist. DSRC is available, in contrast to LTE-V2X or 5G”, he said. “Instead of using the technology available, some people prefer to reinvent the wheel”, Haran accused Qualcomm.

From Haran’s perspective, V2X and cellular networks are separate worlds with no overlap. “There is