Performance Analysis of Asynchronous Optical Burst Switching Networks
| ||International Journal of Computer Trends and Technology (IJCTT)|| |
|© - Issue 2012 by IJCTT Journal|
|Volume-3 Issue-2 |
|Year of Publication : 2012|
|Authors :Nivedha.G, Reethi.S|
Nivedha.G, Reethi.S "Performance Analysis of Asynchronous Optical Burst Switching Networks"International Journal of Computer Trends and Technology (IJCTT),V3(2):242-246 Issue 2012 .ISSN 2231-2803.www.ijcttjournal.org. Published by Seventh Sense Research Group.
Abstract: -The ever increasing demand for higher bandwidth due to the growth of bandwidth intensive applications such as video-on-demand, video conferencing, on-line banking, on-line auction and other multimedia applications motivated the search for alternatives to traditional electronic networks. Optical Burst Switching (OBS) is one such paradigm developed to handle the future bandwidth demands for next-generation optical Internet. Quality-of-service (QoS) provisioning is an essential feature in next-generation networks. This paper aims at providing loss-free transmission inside the OBS network for guaranteed bursts and also to utilize wavelength efficiently. This QoS approach called Link Based QoS Provisioning (LQP) is accomplished by efficient Routing and Wavelength Assignment Scheme. It is discussed for Asynchronous and Synchronous case depending on number of paths and number of available wavelengths. In Asynchronous LQP, each path is assigned with one or more wavelength in order to establish non-overlapping paths between each pair of edge node. On the other hand, in case of Synchronous LQP only limited number of wavelengths is available, hence often paths overlap. The best routing path is selected and wavelength is assigned to the pertaining path, to provide loss-free transmission inside the OBS network. This is carried out for efficient utilization of wavelength.
 C. Qiao and M.Yoo, ?Optical burst switching (OBS)—A newparadigm for an optical internet, J. High Speed Netw., vol. 8, no. 1, pp. 69–84, 1999.
 M. Yoo, C. Qiao, and S. Dixit, ?QoS performance of optical burst switching in IP-over-WDM networks, IEEE J. Sel. Areas Commun., vol. 10, no. 10, pp. 2062–2071, Oct. 2000.
 Y. Chen, M. Hamdi, and D. H. K. Tsang, ?Proportional QoS over OBS networks,? in Proc. IEEE GLOBECOM, 2001, pp. 1510–1514.
 S. Kim, J. S. Choi, and M. Kang, ?Providing absolute differentiated services for optical burst switching networks: Loss differentiation, in IEE Proc.-Commun., 2005, vol. 152, no. 4, pp. 439–446.
 Q. Zhang, V. M. Vokkarane, J. P. Jue, and B. Chen, ?Absolute QoS differentiation in optical burst-switched networks, IEEE J. Sel. Areas Commun., vol. 22, no. 9, pp. 1781–1795, Nov. 2004.
 J. Phuritatkul, Y. Ji, and S. Yamada, ?Proactive wavelength pre-emption for supporting absolute QoS in optical-burst-switched networks, IEEE/OSA J. Lightw. Technol., vol. 25, no. 5, pp. 1130–1137, May 2007.
 L. Hongbo and H. T. Mouftah, ?A new absolute QoS differentiation scheme supporting best-effort class in OBS networks, in Proc. ICTON, 2007, pp. 201–204.
 L. Hongbo and H. T. Mouftah, ?Absolute QoS differentiation with besteffort class support in optical burst switching networks, in Proc. IEEE ISCC, 2007, pp. 127–131
Keywords —Integer linear programming, Optical burst switching (OBS), Quality-of-service (QoS) provisioning, routing, wavelength assignment.