
44-1
44.1 Introduction
Today, electronic control units (ECUs), and especially their interoperation, are the driving force behind
most
automotive
innovations.
ey
allow
the
establishment
of
extended
and
improved
functionality
with
regard
to
safety,
reliability,
environmental
eciency,
and
comfort
(e.g.,
combining
multiple
sensor
information
to
a
comprehensive
picture
of
the
car’s
surrounding).
In
recent
years,
more
than
50
ECUs
interconnected
with
dierent
communication
subsystems
have
become
common
[H05].
is
in
turn
led
to
higher
demands
on
communication
resulting
in
a
strong
increase
on
the
bus
trac.
In
fact,
the
com-
munication
sub
system