  In previous work, linear time-invariant event-triggered control (ETC) systems
were abstracted to finite-state systems that capture the original systems'
sampling behaviour. It was shown that these abstractions can be employed for
scheduling of communication traffic in networks of ETC loops. In this paper, we
extend this framework to the class of nonlinear homogeneous systems, however
adopting a different approach in a number of steps. Finally, we discuss how the
proposed methodology could be extended to general nonlinear systems.
