关键词: 光突发交换 服务质量 基于偏置时间的QoS 比例QoS

Abstract:

Optical Burst Switching（OBS） is a promising solution to providing terabit optical routing and building an alloptical WDM layer for the next-generati on optical Internet. The aim of this paper is to describe two mechanisms in order to support the QoS in OBS networks, the offset-time-based QoS scheme and the proportional QoS scheme. The former is based on JET, the basic protocol for OBS. Unfortunately, this simple and practicable QoS scheme may suffer from urdairness and other problems which the latter succeeds in coping with. The latter, however, is to be perfected in many ways. Simulation results and analysis are also presented to show the comparative study of these two schemes by means of several primary performances.

Key words: （OBS, QoS, offset-time-based QoS, proportional QoS）