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Orientador(es)
Resumo(s)
We propose a schedulability analysis for a
particular class of time division multiple access
(TDMA) networks, which we label as TDMA/SS. SS
stands for slot skipping, reflecting the fact that a slot is
skipped whenever it is not used. Hence, the next slot
can start earlier in benefit of hard real-time traffic. In
the proposed schedulability analysis, we assume
knowledge of all message streams in the system, and
that each node schedules messages in its output queue
according to a rate monotonic policy (as an example).
We present the analysis in two steps. Firstly, we
address the case where a node is only permitted to
transmit a maximum of one message per TDMA cycle.
Secondly, we generalise the analysis to the case where
a node is assigned a budget of messages per TDMA
cycle it may transmit. A simple algorithm to assign
budgets to nodes is also presented.