Dynamic bandwidth allocation on SuperPON

摘要

Abstract: Currently, the first FSAN compliant ATM-based Passive Optical Networks (APON) are installed in the field. A possible evolution scenario for these types of access networks could be the so-called SuperPON system. The SuperPON system exploits all possible upgrades of an FSAN APON system. It comprises namely an upgrade on the following parameters: range: 100 km instead of 20 km; split: 2048 instead of 64; and bitrates: 2.4 Gbit/s downstream instead of 622 Mbit/s and 311 Mbit/s upstream instead of 155 Mbit/s. Due to these significant changes in system parameters, it becomes of the utmost importance to implement a dynamic Medium Access Control (MAC) protocol on the SuperPON, since the upstream bit rate is rather limited for such a large number of connected Optical Network Units. Main challenges specific to the SuperPON are the impact of long range and high number of users on the efficiency of the MAC protocol.!5