Reservation methods are conflict-free access methods for networks in bus topology
. With the reservation technique, in contrast to token
proceduresor collision procedures
, specific time intervals are reserved for each station wishing to transmit. Thetransmission times can be predicted by the sending stations.
In the reservation technique, used for example in Distributed Queue Dual Bus (DQDB), the data stations announce their desire to transmit, and then wait for the reserved container in which to store their data. Such reservation techniques can be static or dynamic in nature.