A slot swapping protocol for time-critical internetworking

Inspired by the concept of session swapping, the Slot Swapping Protocol makes a step forward in slotted rings by including explicit time constraints in traffic scheduling, as it assigns a dynamic priority to slots and uses an Earliest Deadline First-based swapping policy. The paper describes the communication protocol, discusses three slot swapping approaches and presents a set of experiments characterizing the protocol's ability to meet traffic deadlines in several working conditions.