Bandwidth Scheduling Methods for the Upstream Traffic in Passive Optical Networks

摘要

This paper deals with the bandwidth calculation, time slot assignment and average delay analysis in passive optical networks. The basic principle used throughout the time slot allocation for the upstream traffic is provided by the MPCP protocol control messages. The recommendation of this protocol contains both messages used in the upstream and downstream directions. Certainly, various results can be accomplished by different number of users in the network topology. To highlight the discrepancies and possibilities with increased number of optical units, several simulations have been made. During the workflow, we introduce the main topology used for the simulation, how the data transmission is handled in the network and the way the upstream traffic scheduling is completed in. At the end, the traffic utilization is smoothly increased several times to see the differences among various amount of traffic in the system. This work is mainly focusing on the system utilization, delay calculation and the eventual system delay overall.