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Consider the problem of scheduling sporadic messages with
deadlines on a wireless channel. We propose a collision-free medium access
control (MAC) protocol which implements static-priority scheduling
and present a schedulability analysis technique for the protocol. The
MAC protocol allows multiple masters and is fully distributed; it is an
adaptation to a wireless channel of the dominance protocol used in the
CAN bus. But unlike that protocol, our protocol does not require a node
having the ability to receive an incoming bit from the channel while
transmitting to the channel.