Abstract
Message processing and data visualization are key technologies in
a V2X system, influencing both real and perceived performance, and usability of a system. V2X safety applications
require frequent exchange of position information by means of so called Cooperative Awareness Messages
(CAMs). These messages are generated, encoded and sent by all vehicles. Corresponding actions
have to be executed on the receiving vehicles. The in-vehicle V2X system can be divided into several components
to accomplish these tasks. Our approach is based on a "two-component" system, consisting of a vehicle-integrated
V2X communication unit (onboard unit, OBU) and a personal portable device (PPD), such
as a smartphone or tablet PC.
Subject of this work is the investigation how to distribute the workload
and functionality between the two components. Our goal is to find a flexible solution that maximizes the
overall performance and reliability of the system. We investigate and compare several message processing
approaches and try to combine the strengths of both components. To ensure comparability, tests are
carried out on the same hardware platform. As a result, we present our final setup that can handle an
up to 60 times higher message rate compared to other investigated solutions.
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