On-board buffer architectures for Low Earth Orbit (LEO) satellite ATM systems

In the paper, we address low earth orbit (LEO) satellite ATM networks with ATM on-board switching, focusing on an on-board ATM switch buffer architecture and on-board resource management while taking into account the handoff traffic. We introduce and examine four buffer architectures capable of handling both delay and loss sensitive traffics, where we propose to use an additional buffer space for the handoff traffic. A comparison of their performances in terms of delay, delay jitter and buffer space requirements is obtained by means of simulation.