Evaluation of Labeled OBS with Home Circuits

Contrary to Optical Circuit Switching (OCS), Optical Burst Switching (OBS) is efficient for bursty traffic but also weak in guaranteeing the delivery of real-time traffic. We have proposed an OBS enhancement approach, called Labeled OBS with Home Circuits or LOBS-HC, which provides each source-destination pair with a wavelength sharable home circuit for the real-time traffic, so it can guarantee lossless transmission with a short delay. In previous works, we have shown that LOBS-HC requires less resources and provides a better QoS to the real-time traffic than OCS, since it does statistical multiplexing. Here, we extend the study of LOBS-HC. First, we study a few possible design choices in LOBS-HC. Then we evaluate its performance under not only real-time traffic, but also best-effort traffic. Finally, we analyze the effects of the switching speed and the burst size on the performance.