This scheme is referred to as Estimated Setup and Explicit Release
scheme.
??? Scheme.4: Similarly to ???scheme 2???, each BCP contains both the offset time that separates
it from its corresponding DB and the duration of that DB as well. Since both the
Abdelouahab, Abbou, Tat, & Ta b
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beginning and the end of each DB is known (calculated respectively using the offset
and the duration of the data burst), the reservation starts at the beginning of the burst
and ends at its end. The reservation process is controlled using a two-element array
that its elements correspondingly refer to the arrival and departure time of the burst
to/from the core node. This scheme is referred to as Estimated Setup and Estimated
Release scheme.
Several signaling protocols were developed for OBS networks, with different tradeoffs. For
example, Just-In-Time (JIT) was developed by Wei and McFarland (2000) under Scheme
1. The Horizon protocol was proposed by Turner (1999) under Scheme 2; under Scheme 4,
Just-Enough-Time (JET) was developed by Qiao and Yoo (1999). JET was further extended
by Gauger, Dolzer, and Scharf (2002) to be deployed in switches with optical buffers.
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