A Novel Link Architecture for Optical Burst Switched Networks
Optical burst switching (OBS) is proposed as a high speed, flexible and transparent switching technology. It facilitates the efficient integration of both IP and WDM. And it provides statistical multiplexing gains and avoids long end to end setup time of traditional virtual circuit configuration. However, under the current and foreseeable limitations of optical technology, performance of OBS networks is mainly hampered at the network nodes by resource contention. Due to the fact that the random access memory is not available in the optical domain, there exists a real possibility that bursts may contend with one another at a switching node. Therefore, many contention resolutions are proposed, such as fiber delay lines, wavelength conversion, and deflection routing, etc. These resolutions are focus on the node design. They are increase the complexity of the node. But they can not always take some significant effect and make notable gains in cost-efficiency. In this paper, unlike these schemes are focus on the node design, we proposed a novel link architecture named dual-fiber-link (DFL) for OBS networks. We also proposed a relative media access control protocol. We have developed some scenarios to evaluate this architecture. Simulation results show that the proposed link can decrease packet drop probability in terms of orders of magnitude in OBS networks without optical buffers and wavelength conversions.
Optical Burst Switching (OBS) Contention Resolution (CR) Dual-fiber-link (DFL) WavelengthConversion (WC) Quality of Service (QoS)
Yuan Chi Li Zhengbin Xu Anshi
State Key Laboratory of Advanced Optical Communication Systems & NetworksSchool of Electronics Engin State Key Laboratory of Advanced Optical Communication Systems & Networks School of Electronics Engi
国际会议
2008亚太光通信会议(Asia-Pacific Optical Communications 2008)
杭州
英文
2008-10-26（万方平台首次上网日期，不代表论文的发表时间）